{"id":1689,"date":"2024-09-18T12:14:45","date_gmt":"2024-09-18T12:14:45","guid":{"rendered":"https:\/\/www.shengweimachine.com\/?page_id=1689"},"modified":"2026-04-20T09:09:55","modified_gmt":"2026-04-20T09:09:55","slug":"four-side-sealing-packing-machine","status":"publish","type":"page","link":"https:\/\/www.shengweimachine.com\/zh\/full-automatic-vertical-packing-machine\/four-side-sealing-packing-machine\/","title":{"rendered":"\u56db\u8fb9\u5c01\u5305\u88c5\u673a"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1689\" class=\"elementor elementor-1689\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a500a04 e-con-full e-flex e-con e-parent\" data-id=\"a500a04\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-52cefb4 elementor-widget elementor-widget-html\" data-id=\"52cefb4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"sw-page\">\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a71  HERO\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-hero-clean\">\r\n  <div class=\"sw-shell\">\r\n\r\n    <nav class=\"sw-breadcrumb\" aria-label=\"Breadcrumb\">\r\n      <a href=\"https:\/\/www.shengweimachine.com\/\">Home<\/a>\r\n      <span class=\"sw-breadcrumb-sep\">\/<\/span>\r\n      <a href=\"\/full-automatic-vertical-packing-machine\/\">Vertical Packing Machine<\/a>\r\n      <span class=\"sw-breadcrumb-sep\">\/<\/span>\r\n      <span>Four Side Sealing Packing Machine<\/span>\r\n    <\/nav>\r\n\r\n    <div class=\"sw-hero-grid\">\r\n      <div class=\"sw-hero-copy\">\r\n        <span class=\"sw-eyebrow\">Full Automatic Vertical Packing Machine<\/span>\r\n        <h1 class=\"sw-title-main\">Four Side Sealing Packing Machine<\/h1>\r\n        <p class=\"sw-lead\">SW-1528 &nbsp;\u00b7&nbsp; SW-1528B &nbsp;\u00b7&nbsp; 4-Side Seal Sachet &nbsp;\u00b7&nbsp; Powder \u00b7 Liquid \u00b7 Paste<\/p>\r\n        <p class=\"sw-lead\">Compact vertical form-fill-seal machine producing flat four-side-sealed sachets from rollstock film. One platform covers two configurations: the SW-1528 with a liquid piston pump for ketchup, shampoo, honey, chili paste, and edible oil; and the SW-1528B with an inclined auger screw for milk powder, coffee, MSG, salt, and pharmaceutical powder. A dual-film-rack variant is available for continuous production with minimum downtime during film changeover. Schneider frequency drive, photocell-tracked film feed, dual seal temperature control, SUS304 product-contact surfaces, and a compact 220V single-phase power supply are standard.<\/p>\r\n\r\n        <div class=\"sw-hero-cta\">\r\n          <a href=\"javascript:void(0)\"\r\n             onclick=\"if(typeof elementorProFrontend!=='undefined'){elementorProFrontend.modules.popup.showPopup({id:840})}\"\r\n             data-elementor-open-popup=\"840\"\r\n             class=\"sw-btn-primary\">Request a Quote \u2192<\/a>\r\n          <a href=\"https:\/\/wa.me\/8618125112025?text=Hello%2C+I%27m+interested+in+the+Four+Side+Sealing+Packing+Machine+%28SW-1528%29.\" class=\"sw-btn-secondary\" target=\"_blank\" rel=\"noopener\">WhatsApp Us<\/a>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-hero-img\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/09\/Four-Side-Sealing-Vertical-Packing-Machine-SW-1528.webp\"\r\n             alt=\"ShengWei SW-1528 four-side sealing vertical packing machine \u2014 VFFS for coffee powder, MSG, ketchup, and liquid sachets\"\r\n             width=\"580\" height=\"580\"\r\n             loading=\"eager\"\r\n             fetchpriority=\"high\"\r\n             data-no-lazy=\"1\">\r\n      <\/div>\r\n    <\/div>\r\n\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a72  TRUST STRIP\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<div class=\"sw-trust-strip-wrap\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-trust-strip\">\r\n      <div class=\"sw-trust-item\">\r\n        <p class=\"sw-trust-label\">Quality<\/p>\r\n        <p class=\"sw-trust-value\">CE Certified<\/p>\r\n      <\/div>\r\n      <div class=\"sw-trust-item\">\r\n        <p class=\"sw-trust-label\">Source<\/p>\r\n        <p class=\"sw-trust-value\">Factory Direct \u00b7 Guangdong<\/p>\r\n      <\/div>\r\n      <div class=\"sw-trust-item\">\r\n        <p class=\"sw-trust-label\">Customization<\/p>\r\n        <p class=\"sw-trust-value\">OEM \u00b7 Voltage \u00b7 Language<\/p>\r\n      <\/div>\r\n      <div class=\"sw-trust-item\">\r\n        <p class=\"sw-trust-label\">After-Sales<\/p>\r\n        <p class=\"sw-trust-value\">2-Year Warranty \u00b7 24 h Support<\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/div>\r\n<\/div>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a73  SPECIFICATIONS & MODEL SELECTION\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section sw-section-alt sw-spec\">\r\n  <div class=\"sw-shell\">\r\n\r\n    <div class=\"sw-two-up\">\r\n      <div>\r\n        <span class=\"sw-eyebrow\">Product Overview<\/span>\r\n        <h2 class=\"sw-section-title\" style=\"text-align:left\">SW-1528 \/ SW-1528B: Vertical FFS for Four-Side Sealed Sachets<\/h2>\r\n\r\n        <p>The SW-1528 is a compact vertical form-fill-seal machine purpose-built for the four-side seal sachet \u2014 a flat pouch sealed along all four edges, suited to single-dose portion packs for condiments, sauces, powder supplements, and pharmaceutical products. Film unwinds from a rear-mounted roll, wraps around a forming shoulder, and is heat-sealed on two longitudinal edges and two cross edges to produce small, flat sachets that stack efficiently in shipping cartons and dispense cleanly on retail display strips.<\/p>\r\n\r\n        <p>Two configurations share the same mechanical platform. The <strong>SW-1528<\/strong> uses a liquid piston pump (or optional pneumatic diaphragm pump for viscous or particulate-bearing liquids) with a 30 L 304 stainless steel hopper \u2014 ideal for tomato ketchup, honey, shampoo, edible oil, chili paste, salad dressing, and similar liquid or paste products. The <strong>SW-1528B<\/strong> replaces the liquid filling system with an inclined auger screw for dry powders \u2014 milk powder, coffee, MSG, chicken essence, salt, pharmaceutical powder, and spice blends. A dual-film-rack variant holds two rollstock films simultaneously, allowing continuous production through film changeover and eliminating stop-start losses on long runs.<\/p>\r\n\r\n        <p>Standard equipment includes a Schneider frequency converter with HMI rotary speed control, photocell-tracked servo film pull for precise registration with printed films, dual independent temperature controllers for longitudinal and cross seal jaws, a 4-line date printer, a double film clamp plate for stable film travel, easy-tear notch cutting, linked-bag output, and a glass safety enclosure. Film compatibility covers OPP\/CPP, PET\/PE, NYLON\/PE, and plain PE rollstock up to 280 mm wide. For machines that produce three-side-seal sachets on a similar footprint, see the <a href=\"\/full-automatic-vertical-packing-machine\/three-sides-sealing-vertical-packing-machine\/\">SW-1328 three-side sealing vertical packing machine<\/a>.<\/p>\r\n      <\/div>\r\n\r\n      <div class=\"sw-stat-stack\">\r\n        <div class=\"sw-stat-block\">\r\n          <p class=\"sw-stat-label\">Max Speed (Powder)<\/p>\r\n          <p class=\"sw-stat-number\">100 <span class=\"sw-stat-unit\">bags \/ min<\/span><\/p>\r\n        <\/div>\r\n        <div class=\"sw-stat-block\">\r\n          <p class=\"sw-stat-label\">Max Film Width<\/p>\r\n          <p class=\"sw-stat-number\">\u2264280 <span class=\"sw-stat-unit\">mm<\/span><\/p>\r\n        <\/div>\r\n        <div class=\"sw-stat-block\">\r\n          <p class=\"sw-stat-label\">Power Consumption<\/p>\r\n          <p class=\"sw-stat-number is-accent\">1.5\u20131.8 <span class=\"sw-stat-unit\">kW<\/span><\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <!-- Dual-config spec table -->\r\n    <div class=\"sw-table-wrapper\" style=\"margin-top:48px\">\r\n      <table class=\"sw-data-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Parameter<\/th>\r\n            <th>SW-1528 (Liquid \/ Paste)<\/th>\r\n            <th>SW-1528B (Powder)<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr><th>Filling System<\/th><td>Piston pump (optional pneumatic pump)<\/td><td>Inclined auger screw<\/td><\/tr>\r\n          <tr><th>Typical Products<\/th><td>Ketchup, honey, oil, shampoo, chili paste, salad dressing<\/td><td>Milk powder, coffee, MSG, chicken essence, salt, spice<\/td><\/tr>\r\n          <tr><th>Packing Speed<\/th><td>40\u201360 bags\/min<\/td><td>60\u2013100 bags\/min<\/td><\/tr>\r\n          <tr><th>Bag Width<\/th><td>25\u2013140 mm<\/td><td>50\u2013150 mm<\/td><\/tr>\r\n          <tr><th>Bag Length<\/th><td>50\u2013200 mm<\/td><td>25\u2013140 mm<\/td><\/tr>\r\n          <tr><th>Max Roll Film Width<\/th><td>\u2264280 mm<\/td><td>\u2264280 mm<\/td><\/tr>\r\n          <tr><th>Machine Weight<\/th><td>~290 kg<\/td><td>~300 kg<\/td><\/tr>\r\n          <tr><th>Total Power<\/th><td>1.5 kW<\/td><td>1.8 kW<\/td><\/tr>\r\n          <tr><th>Voltage<\/th><td colspan=\"2\">220V 50\/60 Hz single phase (customizable)<\/td><\/tr>\r\n          <tr><th>Bag Format<\/th><td colspan=\"2\">Four-Side Seal Sachet (flat, four heat-sealed edges)<\/td><\/tr>\r\n          <tr><th>Control System<\/th><td colspan=\"2\">PLC + Schneider Frequency Converter + HMI Touch Screen \u00b7 Photocell Eye Registration<\/td><\/tr>\r\n          <tr><th>Sealing System<\/th><td colspan=\"2\">Dual temperature control (longitudinal + cross seal) \u00b7 Easy-tear notch cut \u00b7 Linked-bag output<\/td><\/tr>\r\n          <tr><th>Contact Material<\/th><td colspan=\"2\">SUS304 Stainless Steel<\/td><\/tr>\r\n          <tr><th>Film Material<\/th><td colspan=\"2\">OPP\/CPP \u00b7 PET\/PE \u00b7 NYLON\/PE \u00b7 PE \u00b7 heat-sealable laminates<\/td><\/tr>\r\n          <tr><th>Dimensions (L\u00d7W\u00d7H)<\/th><td>1,260 \u00d7 960 \u00d7 1,800 mm<\/td><td>1,260 \u00d7 930 \u00d7 1,600 mm (standard)<br>1,300 \u00d7 1,120 \u00d7 1,602 mm (dual-film-rack)<\/td><\/tr>\r\n          <tr><th>Safety<\/th><td colspan=\"2\">Glass safety enclosure \u00b7 Emergency stop \u00b7 Overcurrent protection<\/td><\/tr>\r\n          <tr><th>HMI Languages<\/th><td colspan=\"2\">English \u00b7 Spanish \u00b7 Arabic \u00b7 Russian \u00b7 Korean \u00b7 French \u00b7 Chinese (others on request)<\/td><\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <div class=\"sw-spec-cta\">\r\n      <a href=\"javascript:void(0)\"\r\n         onclick=\"if(typeof elementorProFrontend!=='undefined'){elementorProFrontend.modules.popup.showPopup({id:840})}\"\r\n         data-elementor-open-popup=\"840\"\r\n         class=\"sw-btn-primary\">Request Full Datasheet<\/a>\r\n      <a href=\"https:\/\/wa.me\/8618125112025?text=Hello%2C+please+send+me+the+full+datasheet+for+the+SW-1528+four+side+sealing+packing+machine.\" class=\"sw-btn-secondary\" target=\"_blank\" rel=\"noopener\">Send via WhatsApp<\/a>\r\n    <\/div>\r\n\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a74  APPLICATION SCENARIOS\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-section-head-left\">\r\n      <span class=\"sw-eyebrow\">Application Scenarios<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">Recommended Configurations by Product<\/h2>\r\n      <p>Each scenario below shows a tested configuration with expected output. The SW-1528 platform handles both dry powders and free-flowing liquids \u2014 the correct filling system is selected based on your product. Send us your product type, target dose weight, and bag size for a configuration recommendation.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"sw-scenario-grid\">\r\n\r\n      <div class=\"sw-scenario-card\">\r\n        <h3>Ketchup &amp; Sauce Sachets<\/h3>\r\n        <p class=\"sw-scenario-subtitle\">8\u201330 g single-serve condiment packs<\/p>\r\n        <dl class=\"sw-scenario-config\">\r\n          <dt>Config<\/dt><dd>SW-1528 with piston pump<\/dd>\r\n          <dt>Hopper<\/dt><dd>30 L 304 stainless steel (mix \/ heat options)<\/dd>\r\n          <dt>Speed<\/dt><dd>~50 bags\/min<\/dd>\r\n          <dt>8 h Output<\/dt><dd>\u2248 24,000 bags<\/dd>\r\n          <dt>Clients<\/dt><dd>Restaurant chains, condiment co-packers, food service exporters<\/dd>\r\n        <\/dl>\r\n      <\/div>\r\n\r\n      <div class=\"sw-scenario-card\">\r\n        <h3>Instant Coffee &amp; Milk Powder<\/h3>\r\n        <p class=\"sw-scenario-subtitle\">3\u201320 g dry powder single-serve sachets<\/p>\r\n        <dl class=\"sw-scenario-config\">\r\n          <dt>Config<\/dt><dd>SW-1528B with auger screw<\/dd>\r\n          <dt>Feed<\/dt><dd>Inclined auger for dry, free-flowing powder<\/dd>\r\n          <dt>Speed<\/dt><dd>~80 bags\/min<\/dd>\r\n          <dt>8 h Output<\/dt><dd>\u2248 38,400 bags<\/dd>\r\n          <dt>Clients<\/dt><dd>Coffee brands, dairy processors, private label hotel amenities<\/dd>\r\n        <\/dl>\r\n      <\/div>\r\n\r\n      <div class=\"sw-scenario-card\">\r\n        <h3>MSG \u00b7 Chicken Essence \u00b7 Salt<\/h3>\r\n        <p class=\"sw-scenario-subtitle\">2\u201310 g seasoning &amp; flavour enhancers<\/p>\r\n        <dl class=\"sw-scenario-config\">\r\n          <dt>Config<\/dt><dd>SW-1528B with auger screw<\/dd>\r\n          <dt>Feed<\/dt><dd>Auger dosing for fine granular powder<\/dd>\r\n          <dt>Speed<\/dt><dd>~100 bags\/min<\/dd>\r\n          <dt>8 h Output<\/dt><dd>\u2248 48,000 bags<\/dd>\r\n          <dt>Add-ons<\/dt><dd>Date coder, dust collector, nitrogen flushing<\/dd>\r\n        <\/dl>\r\n      <\/div>\r\n\r\n      <div class=\"sw-scenario-card\">\r\n        <h3>Shampoo \u00b7 Oil \u00b7 Paste<\/h3>\r\n        <p class=\"sw-scenario-subtitle\">5\u201325 g personal care &amp; viscous liquid<\/p>\r\n        <dl class=\"sw-scenario-config\">\r\n          <dt>Config<\/dt><dd>SW-1528 with pneumatic pump<\/dd>\r\n          <dt>Feed<\/dt><dd>Pneumatic diaphragm pump for viscous or particulate liquid<\/dd>\r\n          <dt>Speed<\/dt><dd>~45 bags\/min<\/dd>\r\n          <dt>8 h Output<\/dt><dd>\u2248 21,600 bags<\/dd>\r\n          <dt>Clients<\/dt><dd>Hotel amenity OEMs, cosmetic co-packers, sample-pack manufacturers<\/dd>\r\n        <\/dl>\r\n      <\/div>\r\n\r\n    <\/div>\r\n\r\n    <p style=\"margin-top:20px;font-size:0.88rem;color:var(--sw-text-soft)\">The SW-1528 platform is dedicated to flat four-side-seal sachets. For granular products in back-seal format, see the <a href=\"\/full-automatic-vertical-packing-machine\/back-side-sealing-granular-vertical-packing-machine\/\">SW-2030A back-seal granule machine<\/a>. For three-side-seal sachets, see the <a href=\"\/full-automatic-vertical-packing-machine\/three-sides-sealing-vertical-packing-machine\/\">SW-1328 three-side seal machine<\/a>. For multi-lane stick pack production, see the <a href=\"\/full-automatic-vertical-packing-machine\/automatic-ten-columns-back-sealing-vertical-packaging-machine\/\">SW-B10 ten-column back-seal machine<\/a>. For larger-volume auger powder sachets in wider bags, see the <a href=\"\/collar-type-packing-machine\/collar-type-auger-powder-automatic-packing-machine\/\">SW-420E collar type auger powder machine<\/a>.<\/p>\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a75  BAG FORMAT GUIDE\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section sw-section-alt\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-section-head-left\">\r\n      <span class=\"sw-eyebrow\">Bag Format<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">Output Bag Type: Four-Side Seal Sachet<\/h2>\r\n      <p>The SW-1528 \/ SW-1528B produces flat four-side-seal sachets \u2014 pouches heat-sealed along all four edges of a rectangular film panel. This format is the industry standard for single-serve condiment, powder, and liquid portion packs. Four-side sealing offers a tight product-to-film ratio, clean edges for easy-tear opening, and a flat profile that stacks efficiently in shipping cartons and dispenses cleanly from retail display strips.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"sw-bag-samples\" style=\"grid-template-columns:repeat(2,1fr)\"><!-- inline-override: 2 images, 2-col grid -->\r\n      <div class=\"sw-bag-sample-item\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/04\/SUITABLE-MATERIALS.webp\"\r\n             alt=\"Four-side seal sachet suitable materials \u2014 ketchup, shampoo, honey, oil, chili paste packed by SW-1528\"\r\n             width=\"300\" height=\"300\" loading=\"lazy\">\r\n        <p>Suitable materials \u2014 ketchup, oil, shampoo, sauce, paste, honey<\/p>\r\n      <\/div>\r\n      <div class=\"sw-bag-sample-item\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/04\/SAMPLE-PRODUCTS.webp\"\r\n             alt=\"Finished four-side seal sachet samples \u2014 coffee, condiment, and seasoning single-serve packs from SW-1528\"\r\n             width=\"300\" height=\"300\" loading=\"lazy\">\r\n        <p>Finished sachet samples \u2014 coffee, condiment, seasoning single-serve<\/p>\r\n      <\/div>\r\n    <\/div>\r\n\r\n  <\/div>\r\n<\/section>\r\n\r\n<section class=\"sw-section-dark\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-bag-types-grid\">\r\n      <div class=\"sw-bag-type-item\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/01\/4-Side-Seal-Pouch.webp\"\r\n             alt=\"Four-side seal sachet structural diagram \u2014 rectangular pouch heat-sealed on all four edges\" width=\"500\" height=\"500\" loading=\"lazy\">\r\n        <p>4-Side Seal Sachet (Standard Output)<\/p>\r\n      <\/div>\r\n      <div class=\"sw-bag-type-item\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/01\/3-Side-Seal-Pouch.webp\"\r\n             alt=\"Three-side seal sachet structural diagram \u2014 alternative flat sachet format\" width=\"500\" height=\"500\" loading=\"lazy\">\r\n        <p>3-Side Seal Sachet (Alternative Format)<\/p>\r\n      <\/div>\r\n    <\/div>\r\n    <p style=\"margin-top:24px;font-size:0.9rem;color:rgba(255,255,255,.5)\"><strong style=\"color:rgba(255,255,255,.7)\">Compatible film:<\/strong> OPP\/CPP \u00b7 PET\/PE \u00b7 NYLON\/PE \u00b7 PE \u00b7 heat-sealable composite laminates up to 280 mm wide. Send your film sample for sealing parameter confirmation before production.<\/p>\r\n    <p style=\"margin-top:12px;font-size:0.9rem;color:rgba(255,255,255,.4)\">Note: The SW-1528 produces four-side-seal sachets only. For three-side-seal flat sachets, see the <a href=\"\/full-automatic-vertical-packing-machine\/three-sides-sealing-vertical-packing-machine\/\" style=\"color:rgba(255,255,255,.55)\">SW-1328 three-side sealing machine<\/a>. For back-seal stick packs or pillow sachets, see the <a href=\"\/full-automatic-vertical-packing-machine\/back-side-sealing-granular-vertical-packing-machine\/\" style=\"color:rgba(255,255,255,.55)\">SW-2030A back-seal granule machine<\/a>.<\/p>\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a76  HOW IT WORKS\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-section-head-left\">\r\n      <span class=\"sw-eyebrow\">Machine Operation<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">How the Four-Side Seal Cycle Works<\/h2>\r\n      <p>The forming, filling, and sealing sequence runs continuously with each sachet completed in approximately one second at full speed. A photocell eye reads the print registration mark on the film and adjusts the pull length in real time, ensuring every sachet is cut at the correct position. Both the liquid and powder configurations share the same forming and sealing mechanics \u2014 only the filling module changes between SW-1528 and SW-1528B.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"sw-workflow-grid\">\r\n\r\n      <div class=\"sw-workflow-step\">\r\n        <p class=\"sw-workflow-num\">01<\/p>\r\n        <h3 class=\"sw-workflow-title\">Film Unwind &amp; Forming<\/h3>\r\n        <p class=\"sw-workflow-text\">Film unwinds from the rear-mounted roll and passes through the double film clamp plate that stabilises film tension. The dual-film-rack variant loads two rolls simultaneously \u2014 when the active roll runs out, the second roll is pre-threaded for quick splice, eliminating the 30\u201345 minute stop normally required to load fresh film. The forming shoulder wraps the film into a flat tube around the filling spout.<\/p>\r\n      <\/div>\r\n\r\n      <div class=\"sw-workflow-step\">\r\n        <p class=\"sw-workflow-num\">02<\/p>\r\n        <h3 class=\"sw-workflow-title\">Longitudinal Sealing<\/h3>\r\n        <p class=\"sw-workflow-text\">Heated longitudinal seal bars close along the two long edges of the film tube, forming the side seams of each sachet. The longitudinal seal temperature is controlled independently of the cross seal \u2014 this is important when running composite films (such as PET\/PE laminates) that require different temperatures on the side seams versus the end seals. Seal jaws are designed for four-side sealing geometry.<\/p>\r\n      <\/div>\r\n\r\n      <div class=\"sw-workflow-step\">\r\n        <p class=\"sw-workflow-num\">03<\/p>\r\n        <h3 class=\"sw-workflow-title\">Metered Filling<\/h3>\r\n        <p class=\"sw-workflow-text\">Product drops into the formed tube through the central filling spout. The <strong>SW-1528<\/strong> uses a piston pump (or optional pneumatic diaphragm pump for viscous liquids with small particles, such as chili paste) that meters a precise volume per stroke. The <strong>SW-1528B<\/strong> uses an inclined auger screw whose rotation count controls the powder dose \u2014 suitable for dry, free-flowing powder such as milk powder, coffee, MSG, and salt. Mixing and heating options are available on the liquid hopper for products that separate or solidify at room temperature.<\/p>\r\n      <\/div>\r\n\r\n      <div class=\"sw-workflow-step\">\r\n        <p class=\"sw-workflow-num\">04<\/p>\r\n        <h3 class=\"sw-workflow-title\">Cross Sealing, Cutting &amp; Discharge<\/h3>\r\n        <p class=\"sw-workflow-text\">Heated cross seal jaws close across the filled tube, simultaneously forming the rear seal of the current sachet and the front seal of the next one. A blade built into the cross seal jaw cuts between sachets to separate them, and an easy-tear notch is stamped into the edge for clean opening by the end user. The 4-line date printer codes production date, batch number, or expiry information onto each sachet. Finished sachets discharge as individual units or as a linked-bag chain for downstream counting and cartoning.<\/p>\r\n      <\/div>\r\n\r\n    <\/div>\r\n\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a77  GALLERY & VIDEO\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section sw-section-alt\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-section-head-left\">\r\n      <span class=\"sw-eyebrow\">See It in Action<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">SW-1528 in Operation<\/h2>\r\n      <p>Three running-demo videos from real production lines \u2014 showing the four-side-seal cycle on powder, liquid, and paste applications. Contact us for a factory-acceptance test video recorded with your own product sample.<\/p>\r\n    <\/div>\r\n\r\n    <!-- Three running demo videos side-by-side -->\r\n    <div style=\"display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2vw,24px)\">\r\n      <div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:4px;background:#000\">\r\n        <iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/B979dxdsRD8\"\r\n                title=\"SW-1528B four-side sealing packing machine \u2014 powder running demo\"\r\n                style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\"\r\n                allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\"\r\n                allowfullscreen loading=\"lazy\"><\/iframe>\r\n      <\/div>\r\n      <div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:4px;background:#000\">\r\n        <iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/hvJV_3fH-MQ\"\r\n                title=\"SW-1528 four-side sealing packing machine \u2014 liquid \/ paste running demo\"\r\n                style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\"\r\n                allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\"\r\n                allowfullscreen loading=\"lazy\"><\/iframe>\r\n      <\/div>\r\n      <div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:4px;background:#000\">\r\n        <iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/HbNEk2dhyRs\"\r\n                title=\"SW-1528 four-side sealing packing machine \u2014 auger screw powder dosing demo\"\r\n                style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\"\r\n                allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\"\r\n                allowfullscreen loading=\"lazy\"><\/iframe>\r\n      <\/div>\r\n    <\/div>\r\n\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a78  KEY MECHANISMS\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section sw-line-layout\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-two-up\" style=\"align-items:center;gap:56px\"><!-- inline-override: image+text split, align center for visual balance -->\r\n\r\n      <div>\r\n        <span class=\"sw-eyebrow\">Machine Detail<\/span>\r\n        <h2 class=\"sw-section-title\" style=\"text-align:left\">Four Core Systems That Drive Sachet Quality<\/h2>\r\n        <p style=\"margin-bottom:28px\">The SW-1528 platform is built around four mechanical systems that determine seal integrity, dosing accuracy, and film handling reliability. Understanding these systems helps you specify the correct configuration for your product and identify which options (mixing hopper, pneumatic pump, dual-film rack) are needed before quotation. For higher-volume powder applications with wider bags, see the <a href=\"\/collar-type-packing-machine\/collar-type-auger-powder-automatic-packing-machine\/\">SW-420E collar type auger powder machine<\/a>.<\/p>\r\n\r\n        <div style=\"display:flex;flex-direction:column;gap:20px\">\r\n          <div>\r\n            <h3 class=\"sw-title-sub\" style=\"margin-bottom:6px\">\u2460 Schneider Frequency Drive &amp; Speed Control<\/h3>\r\n            <p>A Schneider-brand frequency converter regulates the main motor with a HMI rotary knob for continuous speed adjustment. Smooth acceleration and deceleration protect film integrity at speed changes between SKUs \u2014 important when switching from a slow viscous paste to a fast-flowing powder on the same machine. The frequency drive also enables low-speed jog mode for film threading and maintenance.<\/p>\r\n          <\/div>\r\n          <div>\r\n            <h3 class=\"sw-title-sub\" style=\"margin-bottom:6px\">\u2461 Dual-Zone Temperature Control<\/h3>\r\n            <p>Two independent PID temperature controllers regulate the longitudinal seal bars and cross seal jaws separately. Four-side sealing requires different temperatures on side seams versus end seals \u2014 especially on PET\/PE or NYLON\/PE laminate films where thermal conductivity varies by seal geometry. Each zone holds set-point within \u00b11 \u00b0C, ensuring consistent seal quality across production runs.<\/p>\r\n          <\/div>\r\n          <div>\r\n            <h3 class=\"sw-title-sub\" style=\"margin-bottom:6px\">\u2462 Double Film Clamp Plate<\/h3>\r\n            <p>The double film clamp plate stabilises film as it passes from the roll to the forming shoulder. This mechanism eliminates film walk, reduces wrinkling on the longitudinal seals, and simplifies film threading after a roll change. On the dual-film-rack variant, the clamp plate accommodates two parallel film paths for continuous production. Film tension is adjustable via spring-loaded dancer arms.<\/p>\r\n          <\/div>\r\n          <div>\r\n            <h3 class=\"sw-title-sub\" style=\"margin-bottom:6px\">\u2463 Modular Filling Head<\/h3>\r\n            <p>The filling head is the only difference between SW-1528 and SW-1528B. The liquid piston pump (SW-1528) mounts above the forming spout on a quick-release bracket \u2014 replaceable with a pneumatic diaphragm pump for viscous or particulate-bearing liquids, or with the inclined auger screw (SW-1528B) for dry powder. Changing the filling head takes approximately 45 minutes and does not require modification of the base machine frame, control system, or sealing unit.<\/p>\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div style=\"flex-shrink:0\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/09\/Four-Side-Sealing-Vertical-Packing-Machine-Details-150x150.webp\"\r\n             alt=\"SW-1528 four-side sealing packing machine detail infographic \u2014 PLC control, film former, date printer, high capacity, four-side sealing geometry\"\r\n             width=\"150\" height=\"150\" loading=\"lazy\"\r\n             onclick=\"if(typeof elementorProFrontend!=='undefined'){elementorProFrontend.modules.popup.showPopup({id:840})}\"\r\n             data-elementor-open-popup=\"840\"\r\n             style=\"width:100%;max-width:560px;height:auto;display:block;border-radius:4px;cursor:pointer\">\r\n      <\/div>\r\n\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a78.5  KEY COMPONENTS\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section sw-section-alt\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-section-head-left\">\r\n      <span class=\"sw-eyebrow\">Quality Components<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">Branded Components You Can Verify<\/h2>\r\n      <p>Every critical component on the SW-1528 \/ SW-1528B is sourced from established industrial brands. Part numbers are listed on the quotation sheet so you can verify pricing and availability independently before you order.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"sw-components-grid\">\r\n\r\n      <div class=\"sw-component-card\" onclick=\"swLightbox(this)\" data-alt=\"PLC touch screen panel \u2014 SW-1528 four-side sealing packing machine main control interface\">\r\n        <img decoding=\"async\" class=\"sw-component-card__img\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/04\/TOUCH-SCREEN-PANEL.webp\"\r\n             alt=\"PLC touch screen panel on SW-1528 four-side sealing packing machine \u2014 speed, temperature, and bag length control\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">PLC Touch Screen Panel<\/p>\r\n          <p class=\"sw-component-card__desc\">Colour HMI touch screen mounted on the right side of the machine for easy operator access. Displays packing speed, bag length, longitudinal and cross seal temperature, production count, and fault codes. Seven languages standard.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-component-card\" onclick=\"swLightbox(this)\" data-alt=\"Dual temperature controller \u2014 SW-1528 longitudinal and cross seal heat regulation\">\r\n        <img decoding=\"async\" class=\"sw-component-card__img\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/04\/TEMPERATURE-CONTROLLER-3.webp\"\r\n             alt=\"Dual PID temperature controllers for longitudinal and cross seal jaws on SW-1528 four-side sealing packing machine\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">Dual PID Temperature Controller<\/p>\r\n          <p class=\"sw-component-card__desc\">Two independent temperature loops \u2014 one for longitudinal (side) seals and one for cross (end) seals. Each holds set-point within \u00b11 \u00b0C for consistent seal quality on laminate films that require different side and end seal temperatures.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-component-card\" onclick=\"swLightbox(this)\" data-alt=\"Auger filler closeup \u2014 SW-1528B powder filling system\">\r\n        <img decoding=\"async\" class=\"sw-component-card__img\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/04\/AUGER-FILLER-CLOSEUP-1.webp\"\r\n             alt=\"Inclined auger screw filler for SW-1528B four-side sealing powder packing machine \u2014 dosing for coffee, milk powder, MSG, salt\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">Inclined Auger Screw Filler<\/p>\r\n          <p class=\"sw-component-card__desc\">SUS304 stainless steel hopper with servo-driven inclined auger. Rotation count determines the dose \u2014 precise volumetric filling for dry, free-flowing powder such as coffee, milk powder, MSG, salt, chicken essence, and pharmaceutical powder.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-component-card\" onclick=\"swLightbox(this)\" data-alt=\"Schneider frequency converter \u2014 SW-1528 four-side sealing machine main motor speed control\">\r\n        <img decoding=\"async\" class=\"sw-component-card__img\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/schneider-easy9-circuit-breaker-premade-bag-packing-machine.webp\"\r\n             alt=\"Schneider frequency converter and circuit breaker for main motor speed control on SW-1528 four-side sealing packing machine\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">Schneider Frequency Drive<\/p>\r\n          <p class=\"sw-component-card__desc\">Schneider-brand frequency converter with rotary speed knob on the HMI panel. Controls main motor acceleration, deceleration, and jog speed \u2014 protects film integrity during speed changes between SKUs.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-component-card\" onclick=\"swLightbox(this)\" data-alt=\"Four-line date printer mechanism \u2014 SW-1528 batch and expiry coding\">\r\n        <img decoding=\"async\" class=\"sw-component-card__img\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/04\/DATE-PRINTER-MECHANISM-3.webp\"\r\n             alt=\"Four-line date printer mechanism on SW-1528 four-side sealing packing machine \u2014 batch code and expiry printing\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">4-Line Date Printer<\/p>\r\n          <p class=\"sw-component-card__desc\">Built-in 4-line coding mechanism prints production date, batch number, expiry, and lot code directly onto each sachet during the sealing cycle. Characters are embossed on the film for permanent, tamper-evident marking.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-component-card\" onclick=\"swLightbox(this)\" data-alt=\"Film unwinding system \u2014 SW-1528 double film clamp plate for stable film travel\">\r\n        <img decoding=\"async\" class=\"sw-component-card__img\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/04\/FILM-UNWINDING-SYSTEM.webp\"\r\n             alt=\"Film unwinding system with double film clamp plate on SW-1528 four-side sealing packing machine\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">Double Film Clamp Plate<\/p>\r\n          <p class=\"sw-component-card__desc\">Dual-plate clamp assembly stabilises film tension as it passes from the roll to the forming shoulder. Eliminates film walk, reduces wrinkling on longitudinal seals, and simplifies film threading after a roll change.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n<!-- Lightbox (shared, one instance per page) -->\r\n<div class=\"sw-lightbox\" id=\"swLightboxOverlay\" onclick=\"this.classList.remove('is-open')\">\r\n  <span class=\"sw-lightbox__close\" onclick=\"document.getElementById('swLightboxOverlay').classList.remove('is-open')\">&times;<\/span>\r\n  <img decoding=\"async\" class=\"sw-lightbox__img\" id=\"swLightboxImg\" src=\"\" alt=\"\">\r\n  <p class=\"sw-lightbox__caption\" id=\"swLightboxCaption\"><\/p>\r\n<\/div>\r\n<script>\r\nfunction swLightbox(card){\r\n  var img=card.querySelector('img');\r\n  document.getElementById('swLightboxImg').src=img.src;\r\n  document.getElementById('swLightboxImg').alt=img.alt;\r\n  document.getElementById('swLightboxCaption').textContent=card.dataset.alt||img.alt;\r\n  document.getElementById('swLightboxOverlay').classList.add('is-open');\r\n}\r\ndocument.addEventListener('keydown',function(e){if(e.key==='Escape')document.getElementById('swLightboxOverlay').classList.remove('is-open');});\r\n<\/script>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a79  DECISION GUIDE\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-section-head-left\">\r\n      <span class=\"sw-eyebrow\">Decision Guide<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">Four-Side Seal vs Three-Side Seal \u2014 Which Sachet Format Do You Need?<\/h2>\r\n      <p>Both formats start from rollstock film and produce flat sachets on a vertical FFS machine. The key difference is sealing geometry: four-side seal closes all four edges, three-side seal uses the folded film edge as one side. Choose based on your film cost sensitivity, seal appearance, and packaging strength requirements.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"sw-comparison-grid\">\r\n\r\n      <div class=\"sw-comparison-col is-highlight\">\r\n        <h3 class=\"sw-title-sub\">Choose Four-Side Seal (SW-1528 \/ SW-1528B) When:<\/h3>\r\n        <ul class=\"sw-feature-list\">\r\n          <li>You need a symmetrical sachet with clean edges on all four sides for premium retail presentation<\/li>\r\n          <li>Your product is powder, liquid, or paste (both filling configurations available)<\/li>\r\n          <li>You need an easy-tear notch on any edge for consumer-friendly opening<\/li>\r\n          <li>Your film has printed graphics designed around a four-panel layout<\/li>\r\n          <li>You run moderate-volume single-dose portion packs (40\u2013100 bags\/min)<\/li>\r\n          <li>You need dual-film-rack capability for continuous production on long runs<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n\r\n      <div class=\"sw-comparison-col\">\r\n        <h3 class=\"sw-title-sub\">Choose <a href=\"\/full-automatic-vertical-packing-machine\/three-sides-sealing-vertical-packing-machine\/\" style=\"color:inherit\">Three-Side Seal (SW-1328)<\/a> When:<\/h3>\r\n        <ul class=\"sw-feature-list\">\r\n          <li>You want slightly lower film cost per sachet \u2014 three-side seal uses a folded film edge<\/li>\r\n          <li>Your product is primarily dry granule or powder<\/li>\r\n          <li>Your packaging design locates the tear notch at the top of the sachet only<\/li>\r\n          <li>You prefer a simpler sealing mechanism with fewer temperature zones<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n\r\n    <\/div>\r\n\r\n      <div style=\"margin-top:28px;padding:22px 24px;border:1px solid var(--sw-border);border-radius:var(--sw-radius-md);background:#fff\">\r\n      <h3 class=\"sw-title-sub\" style=\"margin-bottom:8px\">When This Machine Is Not the Right Fit<\/h3>\r\n      <p style=\"margin:0;color:var(--sw-text);line-height:1.72\">The SW-1528 produces <strong>flat four-side-seal sachets only<\/strong>. For back-seal stick packs or pillow sachets, see the <a href=\"\/full-automatic-vertical-packing-machine\/back-side-sealing-granular-vertical-packing-machine\/\">SW-2030A back-seal granule machine<\/a>, <a href=\"\/full-automatic-vertical-packing-machine\/back-side-sealing-auger-type-powder-automatic-packing-machine\/\">SW-2030B back-seal powder machine<\/a>, or <a href=\"\/full-automatic-vertical-packing-machine\/automatic-ten-columns-back-sealing-vertical-packaging-machine\/\">SW-B10 ten-column back-seal stick pack machine<\/a>. For pyramid-shaped triangle bags, see the <a href=\"\/full-automatic-vertical-packing-machine\/automatic-vertical-triangle-packing-machine\/\">SW-1022 triangle bag machine<\/a>. For high-volume liquid sachets in three-side-seal format, the <a href=\"\/collar-type-packing-machine\/collar-type-liquid-packing-machine\/\">SW-420F collar type liquid machine<\/a> offers a wider bag range and faster speeds. For premade stand-up pouches or spouted packs, use the <a href=\"\/premade-bag-packing-machine\/\">premade bag packing machine<\/a> family or the <a href=\"\/spout-pouch-filling-and-capping-machine\/\">spout pouch filling and capping machine (SW-CCS6)<\/a>.<\/p>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a710  WHY SHENGWEI\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section sw-section-alt\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-section-head-left\">\r\n      <span class=\"sw-eyebrow\">About the Manufacturer<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">Why Choose ShengWei Machine<\/h2>\r\n    <\/div>\r\n\r\n    <div class=\"sw-why-grid\">\r\n      <div class=\"sw-why-item\">\r\n        <h3>Factory Direct from Guangdong<\/h3>\r\n        <p>Designed and manufactured in our own 8,000 m\u00b2 factory in Shantou, Guangdong. No trading companies, no middlemen \u2014 you work directly with the engineers who build your machine. Factory visits welcome by appointment and sample runs arranged on the production floor.<\/p>\r\n      <\/div>\r\n      <div class=\"sw-why-item\">\r\n        <h3>Built-to-Order Configuration<\/h3>\r\n        <p>Filling system (piston pump, pneumatic pump, or auger screw), voltage (220V, 50\/60 Hz), HMI language (English, Spanish, Arabic, Russian, Portuguese, and others), dual-film-rack option, mixing \/ heating hopper, and accessories are all configurable per order. OEM branding available for distributors.<\/p>\r\n      <\/div>\r\n      <div class=\"sw-why-item\">\r\n        <h3>Lifetime Remote Support<\/h3>\r\n        <p>Free remote video technical support for the life of the machine \u2014 not just the warranty period. Spare parts ship from our factory within 3 working days. On-site installation and operator training available on request (travel costs quoted separately).<\/p>\r\n      <\/div>\r\n      <div class=\"sw-why-item\">\r\n        <h3>40+ Export Countries<\/h3>\r\n        <p>ShengWei machines are deployed in the UAE, Saudi Arabia, Nigeria, Mexico, Colombia, Indonesia, the Philippines, and 30+ additional markets \u2014 across food, condiment, pharmaceutical, and personal care industries that rely on four-side-seal sachet packaging.<\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a711  TESTIMONIALS\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-section-head-left\">\r\n      <span class=\"sw-eyebrow\">Client Feedback<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">What Our Clients Say<\/h2>\r\n    <\/div>\r\n\r\n    <div class=\"sw-testimonial-grid\">\r\n      <div class=\"sw-testimonial\">\r\n        <p class=\"sw-testimonial-quote\">We bought the SW-1528B with the auger filler to pack 5 g instant coffee sachets for our hotel amenity line. The machine runs at around 85 bags per minute for our film and the seal quality has been consistent through twelve months of daily operation. Switching between our standard coffee blend and the instant tea product took less than ten minutes \u2014 we only change the auger speed on the HMI. The remote support team was responsive when we needed help tuning the cross-seal temperature for our laminate film.<\/p>\r\n        <p class=\"sw-testimonial-name\">Alejandro P.<\/p>\r\n        <p class=\"sw-testimonial-role\">Production Manager \u2014 Private-Label Coffee Packer, Mexico<\/p>\r\n      <\/div>\r\n      <div class=\"sw-testimonial\">\r\n        <p class=\"sw-testimonial-quote\">We run the SW-1528 with a pneumatic pump for chili paste in 15 g portion sachets \u2014 our product has pepper seeds and fibre that a piston pump could not handle. The pneumatic option was exactly what we needed. The dual temperature controller is important for our PET\/PE film \u2014 the side seals need 20 \u00b0C less than the end seals, and the separate zones made that easy to configure. About eighteen months of steady production with only scheduled maintenance so far.<\/p>\r\n        <p class=\"sw-testimonial-name\">Chinedu O.<\/p>\r\n        <p class=\"sw-testimonial-role\">Plant Director \u2014 Food Condiment Exporter, Nigeria<\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a712  FAQ\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section sw-section-alt\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-section-head-left\">\r\n      <span class=\"sw-eyebrow\">FAQ<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">Frequently Asked Questions<\/h2>\r\n    <\/div>\r\n\r\n    <div class=\"sw-accordion\">\r\n\r\n      <details open>\r\n        <summary>\r\n          <h3>What products can the SW-1528 \/ SW-1528B pack?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          The SW-1528 liquid configuration packs tomato ketchup, honey, edible oil, shampoo, chili paste, salad dressing, and other liquids or pastes \u2014 with an optional pneumatic diaphragm pump for viscous products or liquids containing small particles. The SW-1528B powder configuration packs milk powder, coffee, MSG, chicken essence, salt, sugar, spice blends, pharmaceutical powder, and other dry free-flowing powders. Both configurations produce flat four-side-seal sachets from 25 mm to 150 mm wide. The auger filler is recommended for small-dose dry powder that flows consistently \u2014 sticky or clumping powders may require a custom hopper design.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>What's the difference between SW-1528 and SW-1528B?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          The mechanical platform \u2014 frame, sealing unit, PLC control, film handling, and safety enclosure \u2014 is identical. The only difference is the filling head. The SW-1528 uses a liquid piston pump (or optional pneumatic diaphragm pump) mounted above the forming spout, with a 30 L stainless steel hopper that supports optional mixing and heating for products that separate or solidify at room temperature. The SW-1528B replaces the liquid system with an inclined auger screw for dry powder. The speed range differs slightly: SW-1528 runs at 40\u201360 bags\/min (liquid dosing is slower); SW-1528B runs at 60\u2013100 bags\/min. Changing from liquid to powder configuration requires replacing the filling head \u2014 approximately 45 minutes.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>What is the dual-film-rack variant and when do I need it?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          The dual-film-rack variant holds two rollstock films simultaneously \u2014 one active and one pre-threaded as backup. When the active roll runs out, operators splice to the second roll without stopping production, eliminating the 30\u201345 minute stoppage normally required to thread fresh film through the clamp plate, forming shoulder, and seal jaws. This feature makes economic sense on continuous long-run production (8-hour shifts or longer) where film changeover becomes the primary bottleneck. The dual-film-rack version is 5 cm wider and has a slightly different machine footprint (1,300 \u00d7 1,120 \u00d7 1,602 mm vs. the standard 1,260 \u00d7 930 \u00d7 1,600 mm for SW-1528B). Available on both liquid and powder configurations.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>What bag sizes and film widths are supported?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          Bag width range is 25\u2013140 mm on the SW-1528 (liquid) and 50\u2013150 mm on the SW-1528B (powder). Bag length range is 50\u2013200 mm on the SW-1528 and 25\u2013140 mm on the SW-1528B. Maximum rollstock film width is 280 mm on both configurations. Changing bag width requires replacing the forming collar and sealing mould (both are cut to the target bag width) \u2014 we supply a standard size set with the machine and offer additional sizes as accessories. For bag widths larger than 150 mm, use the <a href=\"\/collar-type-packing-machine\/collar-type-auger-powder-automatic-packing-machine\/\">SW-420E collar type auger powder machine<\/a> (widths up to 320 mm) or the <a href=\"\/collar-type-packing-machine\/collar-type-liquid-packing-machine\/\">SW-420F collar type liquid machine<\/a>.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>What film materials are compatible?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          The machine is compatible with OPP\/CPP (standard for food sachets), PET\/PE (higher heat resistance, common for laminates with printed graphics), NYLON\/PE (high oxygen barrier for moisture-sensitive powders), plain PE, and other heat-sealable composite films. The dual-zone temperature control allows independent tuning of the longitudinal and cross seals, which matters for laminates where the side seams and end seals have different film thickness profiles. Maximum film width is 280 mm. We strongly recommend sending a sample of your rollstock film for a sealing test before production \u2014 film compatibility depends on specific composition, not just the general material category.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>What voltage and HMI language options are available?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          The standard voltage is 220V 50\/60 Hz single phase, which covers most global markets. The machine draws only 1.5\u20131.8 kW so no three-phase supply is needed. Other voltages are available on request \u2014 specify at the time of order. The HMI panel supports seven standard languages: English, Spanish, Arabic, Russian, Korean, French, and Chinese. Additional languages can be configured if you supply translation materials for the menu strings. Both voltage and language must be confirmed before we begin production.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>What safety features are included?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          A glass safety enclosure surrounds the sealing and cutting stations to prevent operator contact with heated jaws and moving blades during normal operation. The enclosure includes an interlock that stops the machine if the door is opened during the cycle. Standard electrical safety includes emergency stop buttons on the front panel, overcurrent protection via Schneider circuit breakers, and thermal cutouts on all heating elements. Pneumatic safety valves vent cylinder pressure when the machine stops. The machine is CE-marked and certified for export to EU, Middle East, Southeast Asian, Latin American, and African markets.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>What warranty and after-sales support is included?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          2-year warranty covering manufacturing defects under normal operation and maintenance. Consumable wear parts (sealing strips, heating elements, cutting blades, auger screws in contact with abrasive powders) are excluded from warranty. Spare parts ship from our Guangdong factory within 3 working days. Remote video technical support via WhatsApp or video call is free for the lifetime of the machine \u2014 not limited to the warranty period. On-site installation and operator training are available on request (travel and accommodation quoted separately, typically 5\u20137 days on-site).\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>What is the lead time and payment terms?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          Standard lead time is 15\u201325 working days after deposit confirmation. Payment: 30% deposit on order, 70% balance before shipment (T\/T). Custom configurations \u2014 pneumatic pump option, dual-film-rack, mixing \/ heating hopper, non-standard voltage, or special HMI language \u2014 may add 5\u201310 working days. The SW-1528 is a compact single-unit machine so shipping is economical by sea freight; air freight is available for urgent orders. Contact us with your requirements for a confirmed production schedule and freight quotation.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>Can I send a product sample for a packing test?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          Yes. Ship a sample of your product (approximately 500 g of powder, 1 L of liquid) and your rollstock film (or a sample bag with the same film specification) to our Shantou factory. We will run a packing test on the actual SW-1528 or SW-1528B, record a video of the four-side-seal result, and share it along with the recommended sealing parameters, dosing settings, and any configuration adjustments needed. This is the most reliable way to confirm machine suitability and sachet appearance before committing to an order. Contact us for the shipping address and sample instructions.\r\n        <\/div>\r\n      <\/details>\r\n\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a713  EXPERT GUIDES & RELATED MACHINES\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-section\">\r\n  <div class=\"sw-shell\">\r\n\r\n    <div class=\"sw-section-head-left\">\r\n      <span class=\"sw-eyebrow\">Resources<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">Expert Guides<\/h2>\r\n    <\/div>\r\n\r\n    <div class=\"sw-expert-grid\">\r\n      <div class=\"sw-expert-card\">\r\n        <h3>What Is a Vertical Form-Fill-Seal Machine?<\/h3>\r\n        <p>How vertical FFS machines work, what sachet formats they produce, and how they compare to horizontal flow wrap and premade bag systems.<\/p>\r\n        <a href=\"\/full-automatic-vertical-packing-machine\/\">Read Guide \u2192<\/a>\r\n      <\/div>\r\n      <div class=\"sw-expert-card\">\r\n        <h3>Four-Side Seal vs Three-Side Seal<\/h3>\r\n        <p>Film cost, seal appearance, packaging strength, and tear-notch placement compared \u2014 how to choose between the SW-1528 and SW-1328.<\/p>\r\n        <span>Compare Formats \u2192<\/span>\r\n      <\/div>\r\n      <div class=\"sw-expert-card\">\r\n        <h3>Liquid Sachet vs Powder Sachet Packaging<\/h3>\r\n        <p>Piston pump, pneumatic pump, and auger screw dosing systems explained \u2014 which filling technology fits your product viscosity and dose accuracy requirements.<\/p>\r\n        <span>Learn More \u2192<\/span>\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <!-- Related machines -->\r\n    <h3 class=\"sw-title-sub\" style=\"margin-top:56px;margin-bottom:4px\">Other Seal Format & Powder Machines<\/h3>\r\n    <p style=\"margin-bottom:28px;color:var(--sw-text-soft)\">Different seal formats and machine types for powder and granule products.<\/p>\r\n\r\n    <div class=\"sw-three-up\">\r\n\r\n      <div class=\"sw-machine-card\">\r\n        <span class=\"sw-card-model\">SW-C6<\/span>\r\n        <div class=\"sw-card-img\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/09\/Automatic-six-column-four-side-sealing-vertical-packaging-machine-SW-C6.webp\"\r\n               alt=\"SW-C6 six-column four-side seal vertical machine for high-volume sachet production\"\r\n               width=\"500\" height=\"375\" loading=\"lazy\">\r\n        <\/div>\r\n        <span class=\"sw-card-tag\">Vertical VFFS<\/span>\r\n        <h3 class=\"sw-title-sub\">Six-Column Four-Side Seal Vertical Machine<\/h3>\r\n        <p>Six-column four-side seal vertical machine. Same seal type in multi-lane format for high-volume sachet production.<\/p>\r\n        <div class=\"sw-card-footer\">\r\n          <a href=\"\/full-automatic-vertical-packing-machine\/automatic-six-column-four-side-sealing-vertical-packaging-machine\/\" class=\"sw-btn-secondary\">View Machine \u2192<\/a>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-machine-card\">\r\n        <span class=\"sw-card-model\">SW-1328<\/span>\r\n        <div class=\"sw-card-img\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/09\/Three-Side-Sealing-Vertical-Packing-Machine.webp\"\r\n               alt=\"SW-1328 three-side seal vertical packing machine with three-side seal format option\"\r\n               width=\"500\" height=\"375\" loading=\"lazy\">\r\n        <\/div>\r\n        <span class=\"sw-card-tag\">Vertical VFFS<\/span>\r\n        <h3 class=\"sw-title-sub\">Three-Side Seal Vertical Machine<\/h3>\r\n        <p>Three-side seal vertical machine. Similar single-lane VFFS with three-side seal format option.<\/p>\r\n        <div class=\"sw-card-footer\">\r\n          <a href=\"\/full-automatic-vertical-packing-machine\/three-sides-sealing-vertical-packing-machine\/\" class=\"sw-btn-secondary\">View Machine \u2192<\/a>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-machine-card\">\r\n        <span class=\"sw-card-model\">SW-L200<\/span>\r\n        <div class=\"sw-card-img\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/02\/Premade-Powder-Packing-Machine.webp\"\r\n               alt=\"SW-L200 rotary premade bag powder packing machine for premium powder packaging\"\r\n               width=\"500\" height=\"375\" loading=\"lazy\">\r\n        <\/div>\r\n        <span class=\"sw-card-tag\">Premade Bag<\/span>\r\n        <h3 class=\"sw-title-sub\">Premade Bag Powder Packing Machine<\/h3>\r\n        <p>Rotary premade bag powder machine. Uses pre-formed pouches with auger filling for premium powder packaging.<\/p>\r\n        <div class=\"sw-card-footer\">\r\n          <a href=\"\/premade-bag-packing-machine\/premade-bag-powder-packing-machine\/\" class=\"sw-btn-secondary\">View Machine \u2192<\/a>\r\n        <\/div>\r\n      <\/div>\r\n\r\n    <\/div>\r\n\r\n\r\n    <p class=\"sw-related-also\" style=\"margin-top:24px;font-size:0.95rem;color:var(--sw-text-soft)\">\r\n      Also explore in Vertical: <a href=\"\/full-automatic-vertical-packing-machine\/automatic-six-column-three-side-sealing-vertical-packaging-machine\/\">6-Col 3-Side Seal (SW-A6)<\/a> \u00b7 <a href=\"\/full-automatic-vertical-packing-machine\/back-side-sealing-tipping-bucket-automatic-vertical-packing-machine\/\">Back-Seal Tipping Bucket (SW-2030C)<\/a> \u00b7 <a href=\"\/full-automatic-vertical-packing-machine\/pendular-small-granule-vertical-packing-machine\/\">Pendular Small Granule (SW-2030D)<\/a> \u00b7 <a href=\"\/full-automatic-vertical-packing-machine\/jelly-barstick-automatic-vertical-packing-machine\/\">Jelly Bar Stick (SW-2830A)<\/a> \u00b7 <a href=\"\/full-automatic-vertical-packing-machine\/full-automatic-reciprocating-vertical-packing-machine\/\">Reciprocating (SW-2830B)<\/a>\r\n    <\/p>\r\n\r\n    <p class=\"sw-related-also\" style=\"margin-top:8px;font-size:0.95rem;color:var(--sw-text-soft)\">\r\n      Also packs: <a href=\"\/4-side-seal-pouch-packing-machine\/\">4 Side Seal<\/a> &middot; <a href=\"\/3-side-seal-pouch-packing-machine\/\">3 Side Seal<\/a> &middot; <a href=\"\/back-seal-pouch-packing-machine\/\">Back Seal<\/a> &middot; <a href=\"\/pouch-types\/\">Browse all pouch types &rarr;<\/a>\r\n    <\/p>\r\n\r\n    <div class=\"sw-related-cta\">\r\n      <a href=\"\/full-automatic-vertical-packing-machine\/\" class=\"sw-btn-secondary\">View All Vertical Packing Machines \u2192<\/a>\r\n      <a href=\"\/premade-bag-packing-machine\/\" class=\"sw-btn-secondary\">Premade Bag Machines \u2192<\/a>\r\n      <a href=\"\/full-automatic-pillow-pouch-packing-machine\/\" class=\"sw-btn-secondary\">Pillow Pouch Packing Machines \u2192<\/a>\r\n    <\/div>\r\n\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     \u00a714  FINAL CTA\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<section class=\"sw-cta-dark\">\r\n  <div class=\"sw-shell\">\r\n    <div class=\"sw-cta-grid\">\r\n\r\n      <div>\r\n        <span class=\"sw-eyebrow\">Get a Quote<\/span>\r\n        <h2 class=\"sw-section-title\" style=\"text-align:left\">Ready to Discuss the SW-1528?<\/h2>\r\n        <p class=\"sw-lead\">Send us your product type (powder, liquid, or paste), target sachet size, and daily output. We will confirm the correct filling configuration \u2014 SW-1528 or SW-1528B \u2014 and return a quotation within 24 hours.<\/p>\r\n        <p class=\"sw-workflow-text\">info@shengweimachine.com \u00b7 +86 181 2511 2025<\/p>\r\n      <\/div>\r\n\r\n      <div class=\"sw-cta-buttons\">\r\n        <a href=\"javascript:void(0)\"\r\n           onclick=\"if(typeof elementorProFrontend!=='undefined'){elementorProFrontend.modules.popup.showPopup({id:840})}\"\r\n           data-elementor-open-popup=\"840\"\r\n           class=\"sw-btn-primary\">Request a Quote \u2192<\/a>\r\n        <a href=\"https:\/\/wa.me\/8618125112025?text=Hello%2C+I%27d+like+a+quote+for+the+SW-1528+Four+Side+Sealing+Packing+Machine.\" class=\"sw-btn-secondary\" target=\"_blank\" rel=\"noopener\">WhatsApp Now<\/a>\r\n      <\/div>\r\n\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     STRUCTURED DATA \u2014 BreadcrumbList + Product + FAQPage\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<script type=\"application\/ld+json\">\r\n[\r\n  {\r\n    \"@context\": \"https:\/\/schema.org\",\r\n    \"@type\": \"BreadcrumbList\",\r\n    \"itemListElement\": [\r\n      { \"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/www.shengweimachine.com\/\" },\r\n      { \"@type\": \"ListItem\", \"position\": 2, \"name\": \"Vertical Packing Machine\", \"item\": \"https:\/\/www.shengweimachine.com\/full-automatic-vertical-packing-machine\/\" },\r\n      { \"@type\": \"ListItem\", \"position\": 3, \"name\": \"Four Side Sealing Packing Machine\", \"item\": \"https:\/\/www.shengweimachine.com\/full-automatic-vertical-packing-machine\/four-side-sealing-packing-machine\/\" }\r\n    ]\r\n  },\r\n  {\r\n    \"@context\": \"https:\/\/schema.org\",\r\n    \"@type\": \"Product\",\r\n    \"name\": \"Four Side Sealing Packing Machine\",\r\n    \"description\": \"Compact vertical form-fill-seal machine producing flat four-side-seal sachets for powder, liquid, and paste. SW-1528 liquid piston pump configuration for ketchup, honey, oil, shampoo, chili paste. SW-1528B inclined auger screw configuration for milk powder, coffee, MSG, salt, pharmaceutical powder. Dual-film-rack variant available. Bag width 25\u2013150 mm, packing speed 40\u2013100 bags\/min, max film width 280 mm, Schneider frequency drive, dual-zone temperature control, SUS304 stainless steel.\",\r\n    \"brand\": { \"@type\": \"Brand\", \"name\": \"ShengWei Machine\" },\r\n    \"manufacturer\": {\r\n      \"@type\": \"Organization\",\r\n      \"name\": \"Guangdong Shengwei Machinery Technology Co., Ltd.\",\r\n      \"url\": \"https:\/\/www.shengweimachine.com\"\r\n    },\r\n    \"model\": \"SW-1528 \/ SW-1528B\",\r\n    \"url\": \"https:\/\/www.shengweimachine.com\/full-automatic-vertical-packing-machine\/four-side-sealing-packing-machine\/\",\r\n    \"image\": \"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/09\/Four-Side-Sealing-Vertical-Packing-Machine-SW-1528.webp\",\r\n    \"category\": \"Vertical Packing Machine\",\r\n    \"sku\": \"SW-1528\/1528B\",\r\n    \"mpn\": \"SW-1528\",\r\n    \"offers\": {\r\n      \"@type\": \"Offer\",\r\n      \"url\": \"https:\/\/www.shengweimachine.com\/full-automatic-vertical-packing-machine\/four-side-sealing-packing-machine\/\",\r\n      \"priceCurrency\": \"USD\",\r\n      \"price\": \"0\",\r\n      \"priceValidUntil\": \"2027-12-31\",\r\n      \"availability\": \"https:\/\/schema.org\/InStock\",\r\n      \"seller\": { \"@type\": \"Organization\", \"name\": \"ShengWei Machine\" }\r\n    },\r\n    \"additionalProperty\": [\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Packing Speed (SW-1528 Liquid)\", \"value\": \"40\u201360 bags\/min\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Packing Speed (SW-1528B Powder)\", \"value\": \"60\u2013100 bags\/min\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Bag Width\", \"value\": \"25\u2013150 mm (depending on configuration)\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Bag Length\", \"value\": \"25\u2013200 mm (depending on configuration)\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Max Roll Film Width\", \"value\": \"\u2264280 mm\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Bag Format\", \"value\": \"Four-Side Seal Sachet\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Filling System (SW-1528)\", \"value\": \"Liquid piston pump (optional pneumatic pump)\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Filling System (SW-1528B)\", \"value\": \"Inclined auger screw\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Control System\", \"value\": \"PLC + Schneider frequency converter + HMI touch screen + photocell registration\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Sealing System\", \"value\": \"Dual-zone temperature control (longitudinal + cross) \u00b7 easy-tear notch \u00b7 linked-bag output\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Contact Material\", \"value\": \"SUS304 Stainless Steel\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Power\", \"value\": \"1.5 kW (SW-1528) \/ 1.8 kW (SW-1528B)\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Voltage\", \"value\": \"220V 50\/60 Hz single phase (customizable)\" }\r\n    ]\r\n  },\r\n  {\r\n    \"@context\": \"https:\/\/schema.org\",\r\n    \"@type\": \"FAQPage\",\r\n    \"mainEntity\": [\r\n      { \"@type\": \"Question\", \"name\": \"What products can the SW-1528 \/ SW-1528B pack?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"The SW-1528 liquid configuration packs tomato ketchup, honey, edible oil, shampoo, chili paste, and salad dressing \u2014 with an optional pneumatic pump for viscous or particulate liquids. The SW-1528B powder configuration packs milk powder, coffee, MSG, chicken essence, salt, sugar, spice blends, and pharmaceutical powder. Both produce flat four-side-seal sachets from 25 mm to 150 mm wide.\" } },\r\n      { \"@type\": \"Question\", \"name\": \"What's the difference between SW-1528 and SW-1528B?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"The mechanical platform is identical \u2014 the only difference is the filling head. SW-1528 uses a liquid piston pump (or optional pneumatic pump) with a 30 L stainless hopper. SW-1528B uses an inclined auger screw for dry powder. Liquid version runs at 40\u201360 bags\/min; powder version runs at 60\u2013100 bags\/min. Changing the filling head takes approximately 45 minutes.\" } },\r\n      { \"@type\": \"Question\", \"name\": \"What is the dual-film-rack variant and when do I need it?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"The dual-film-rack variant holds two rollstock films simultaneously \u2014 one active, one pre-threaded. When the active roll runs out, operators splice to the second roll without stopping, eliminating the 30\u201345 minute stoppage for film threading. Economic on continuous long-run production. Machine is slightly wider: 1,300 \u00d7 1,120 \u00d7 1,602 mm vs. standard 1,260 \u00d7 930 \u00d7 1,600 mm.\" } },\r\n      { \"@type\": \"Question\", \"name\": \"What bag sizes and film widths are supported?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"SW-1528 (liquid): bag width 25\u2013140 mm, bag length 50\u2013200 mm. SW-1528B (powder): bag width 50\u2013150 mm, bag length 25\u2013140 mm. Maximum rollstock film width is 280 mm on both. Changing bag width requires replacing the forming collar and sealing mould. For bag widths larger than 150 mm, use the SW-420E collar type auger powder machine or SW-420F collar type liquid machine.\" } },\r\n      { \"@type\": \"Question\", \"name\": \"What film materials are compatible?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"OPP\/CPP, PET\/PE, NYLON\/PE, plain PE, and other heat-sealable composite films. The dual-zone temperature control allows independent tuning of the longitudinal and cross seals, which matters for laminates. Maximum film width is 280 mm. We recommend sending a sample of your film for a sealing test before production.\" } },\r\n      { \"@type\": \"Question\", \"name\": \"What voltage and HMI language options are available?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"Standard voltage is 220V 50\/60 Hz single phase. HMI supports seven standard languages: English, Spanish, Arabic, Russian, Korean, French, and Chinese. Additional languages can be configured if you supply translation materials. Specify voltage and language at the time of order.\" } },\r\n      { \"@type\": \"Question\", \"name\": \"What safety features are included?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"A glass safety enclosure surrounds the sealing and cutting stations with a door interlock that stops the machine if opened. Electrical safety includes emergency stop buttons, overcurrent protection via Schneider circuit breakers, and thermal cutouts on heating elements. The machine is CE-marked for export to EU, Middle East, Southeast Asian, Latin American, and African markets.\" } },\r\n      { \"@type\": \"Question\", \"name\": \"What warranty and after-sales support is included?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"2-year warranty covering manufacturing defects. Wear parts (sealing strips, heating elements, blades, auger screws in abrasive powder contact) excluded. Spare parts ship within 3 working days. Free lifetime remote video technical support. On-site installation available on request (travel costs extra, typically 5\u20137 days on-site).\" } },\r\n      { \"@type\": \"Question\", \"name\": \"What is the lead time and payment terms?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"Standard lead time is 15\u201325 working days after deposit confirmation. Payment: 30% deposit, 70% balance before shipment (T\/T). Custom configurations (pneumatic pump, dual-film-rack, mixing hopper, non-standard voltage, special HMI language) may add 5\u201310 working days.\" } },\r\n      { \"@type\": \"Question\", \"name\": \"Can I send a product sample for a packing test?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"Yes. Ship approximately 500 g of powder or 1 L of liquid and your rollstock film to our Shantou factory. We run a packing test on the actual machine, record a video of the four-side-seal result, and share it with recommended sealing parameters and dosing settings. Contact us for shipping instructions.\" } }\r\n    ]\r\n  }\r\n]\r\n<\/script>\r\n\r\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Home \/ Vertical Packing Machine \/ Four Side Sealing Packing Machine Full Automatic Vertical Packing Machine Four Side Sealing Packing Machine SW-1528 &nbsp;\u00b7&nbsp; SW-1528B &nbsp;\u00b7&nbsp; 4-Side Seal Sachet &nbsp;\u00b7&nbsp; Powder \u00b7 Liquid \u00b7 Paste Compact vertical form-fill-seal machine producing flat four-side-sealed sachets from rollstock film. One platform covers two configurations: the SW-1528 with a liquid [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1556,"parent":1542,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1689","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/pages\/1689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/comments?post=1689"}],"version-history":[{"count":15,"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/pages\/1689\/revisions"}],"predecessor-version":[{"id":2898,"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/pages\/1689\/revisions\/2898"}],"up":[{"embeddable":true,"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/pages\/1542"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/media\/1556"}],"wp:attachment":[{"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/media?parent=1689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}