{"id":1106,"date":"2024-02-27T03:01:10","date_gmt":"2024-02-27T03:01:10","guid":{"rendered":"https:\/\/shengweimachine.com\/?page_id=1106"},"modified":"2026-04-22T03:30:53","modified_gmt":"2026-04-22T03:30:53","slug":"collar-type-multi-heads-granule-weigher-packing-machine","status":"publish","type":"page","link":"https:\/\/www.shengweimachine.com\/zh\/collar-type-packing-machine\/collar-type-multi-heads-granule-weigher-packing-machine\/","title":{"rendered":"\u591a\u5934\u79e4\u9897\u7c92\u5305\u88c5\u673a"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1106\" class=\"elementor elementor-1106\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ead8101 e-con-full e-flex e-con e-parent\" data-id=\"ead8101\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ac3c33e elementor-widget elementor-widget-html\" data-id=\"ac3c33e\" 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<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=\"\/collar-type-packing-machine\/\">Collar Type Packing Machine<\/a>\r\n      <span class=\"sw-breadcrumb-sep\">\/<\/span>\r\n      <span>Multi-Heads Granule Weigher 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\">Collar Type Packing Machine<\/span>\r\n        <h1 class=\"sw-title-main\">Collar Type Multi-Heads Granule Weigher Packing Machine<\/h1>\r\n        <p class=\"sw-lead\">SW-420A \/ SW-520A \/ SW-620A \/ SW-720A \/ SW-820A<\/p>\r\n        <p class=\"sw-lead\">Vertical form-fill-seal machine paired with a 10-head combination weigher for high-accuracy granule packaging \u2014 chips, nuts, candy, pet food, seeds, and hardware. Forms 3-side seal bags from roll film at up to 70 bags per minute with \u00b11 g weighing accuracy.<\/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             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+Collar+Type+Multi-Heads+Granule+Weigher+Packing+Machine+%28SW-420A%2F620A%2F820A%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\/2026\/03\/SW-420A-620A-820A-collar-type-multihead-weigher-packing-machine-768x768.webp\"\r\n             alt=\"ShengWei SW-420A collar type multi-heads granule weigher packing machine \u2014 vertical form-fill-seal with 10-head combination weigher for chips, nuts, and granule packaging\"\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<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 Lifetime Remote Support<\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/div>\r\n<\/div>\r\n\r\n\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-420A \/ SW-520A \/ SW-620A \/ SW-720A \/ SW-820A: Multi-Head Weigher VFFS for Granules<\/h2>\r\n\r\n        <p>The SW-420A, SW-520A, SW-620A, SW-720A, and SW-820A are collar type vertical form-fill-seal (VFFS) machines integrated with a 10-head combination weigher (higher head counts available on larger models) for high-speed, high-accuracy granule packaging. The machine forms each bag in-line from a roll of packaging film \u2014 wrapping it around a triangular forming collar into a tube, sealing the back seam vertically, then filling the weighed product and sealing each bag at the bottom.<\/p>\r\n\r\n        <p>The 10-head combination weigher achieves \u00b11 g accuracy for weights up to 100 g and \u00b11% for weights above 100 g \u2014 essential for chips, snack foods, candy, nuts, pet food, seeds, and hardware where product waste from overfilling directly impacts profitability. A Z-type bucket elevator automatically feeds material from ground level to the weigher platform. Five model sizes \u2014 SW-420A (bag width up to 200 mm), SW-520A (up to 250 mm), SW-620A (up to 300 mm), SW-720A (up to 350 mm), and SW-820A (up to 400 mm) \u2014 cover everything from small sachets to large retail and bulk bags. Siemens PLC and touch screen control all parameters from a single interface.<\/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\">Packing Speed<\/p>\r\n          <p class=\"sw-stat-number\">20\u201370 <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\">Fill Range<\/p>\r\n          <p class=\"sw-stat-number\">100\u20132,500+ <span class=\"sw-stat-unit\">g<\/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 is-accent\">820 <span class=\"sw-stat-unit\">mm<\/span><\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <!-- Full 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-420A<\/th>\r\n            <th>SW-520A<\/th>\r\n            <th>SW-620A<\/th>\r\n            <th>SW-720A<\/th>\r\n            <th>SW-820A<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr><th>Roll Film Width<\/th><td>\u2264420 mm<\/td><td>\u2264520 mm<\/td><td>\u2264620 mm<\/td><td>\u2264720 mm<\/td><td>\u2264820 mm<\/td><\/tr>\r\n          <tr><th>Bag Length<\/th><td>80\u2013300 mm<\/td><td>80\u2013350 mm<\/td><td>80\u2013320 mm<\/td><td>80\u2013500 mm<\/td><td>80\u2013420 mm<\/td><\/tr>\r\n          <tr><th>Bag Width<\/th><td>80\u2013200 mm<\/td><td>130\u2013250 mm<\/td><td>150\u2013300 mm<\/td><td>170\u2013350 mm<\/td><td>200\u2013400 mm<\/td><\/tr>\r\n          <tr><th>Fill Weight Range<\/th><td>100\u20131,000 g<\/td><td>\u2014<\/td><td>500\u20132,500 g<\/td><td>\u2014<\/td><td>2,500 g+<\/td><\/tr>\r\n          <tr><th>Packing Speed<\/th><td>30\u201370 bags\/min<\/td><td>25\u201365 bags\/min<\/td><td>20\u201360 bags\/min<\/td><td>20\u201355 bags\/min<\/td><td>20\u201350 bags\/min<\/td><\/tr>\r\n          <tr><th>Weighing Accuracy<\/th><td colspan=\"5\">\u00b11 g (\u2264100 g) \u00b7 \u00b11% (&gt;100 g)<\/td><\/tr>\r\n          <tr><th>Weigher Type<\/th><td colspan=\"5\">10-head combination weigher (stainless steel)<\/td><\/tr>\r\n          <tr><th>Bag Format<\/th><td colspan=\"5\">3-Side Seal \/ Back Seal \/ Gusset (from roll film)<\/td><\/tr>\r\n          <tr><th>Feeding System<\/th><td colspan=\"5\">Z-type bucket elevator + vibration dispersion feeder<\/td><\/tr>\r\n          <tr><th>Sealing Type<\/th><td colspan=\"5\">Vertical back seam + horizontal cross-seal<\/td><\/tr>\r\n          <tr><th>Control System<\/th><td colspan=\"5\">Siemens PLC + Siemens HMI touch screen (Mitsubishi \/ Delta controls available on request)<\/td><\/tr>\r\n          <tr><th>Servo Motor<\/th><td colspan=\"5\">Yichuan (film pull servo)<\/td><\/tr>\r\n          <tr><th>Contact Material<\/th><td colspan=\"5\">SUS304 Stainless Steel<\/td><\/tr>\r\n          <tr><th>Total Power<\/th><td>5 kW<\/td><td>5 kW<\/td><td>6 kW<\/td><td>6 kW<\/td><td>6.5 kW<\/td><\/tr>\r\n          <tr><th>Voltage<\/th><td colspan=\"5\">380V \/ 220V \u00b7 50\/60 Hz (customizable)<\/td><\/tr>\r\n          <tr><th>Air Consumption<\/th><td colspan=\"5\">0.6\u20131.2 m\u00b3\/min<\/td><\/tr>\r\n          <tr><th>Machine Weight<\/th><td>~1,300 kg<\/td><td>~1,300 kg<\/td><td>~1,600 kg<\/td><td>~1,600 kg<\/td><td>~2,000 kg<\/td><\/tr>\r\n          <tr><th>Dimensions (L\u00d7W\u00d7H)<\/th><td>4,700 \u00d7 2,000 \u00d7 3,800 mm<\/td><td>4,700 \u00d7 2,000 \u00d7 3,800 mm<\/td><td>4,700 \u00d7 2,234 \u00d7 3,900 mm<\/td><td>4,700 \u00d7 2,234 \u00d7 3,900 mm<\/td><td>4,700 \u00d7 2,265 \u00d7 4,200 mm<\/td><\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <!-- Component overview image -->\r\n    <div style=\"margin-top:48px;text-align:center\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-full-machine-front-view-768x512.webp\"\r\n           alt=\"SW-420A collar type multi-head weigher packing machine front view \u2014 complete system with 10-head combination weigher, Z-type elevator, and VFFS main machine\"\r\n           width=\"768\" height=\"512\"\r\n           loading=\"lazy\"\r\n           style=\"max-width:100%;height:auto;border-radius:var(--sw-radius-md)\">\r\n      <p style=\"margin-top:12px;font-size:0.88rem;color:var(--sw-text-soft)\">SW-420A complete packaging system: Z-type bucket elevator, 10-head combination weigher, triangular forming collar, vertical sealing belt, and horizontal sealing jaws.<\/p>\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         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-420A%2F620A%2F820A+collar+type+multi-heads+granule+weigher+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<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>The SW-420A\/520A\/620A\/720A\/820A handles a wide range of granular products. Speed and accuracy depend on product density, piece size, and target fill weight \u2014 contact us with your product specification for a tailored estimate.<\/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>Chips &amp; Puffed Snacks<\/h3>\r\n        <p class=\"sw-scenario-subtitle\">30\u2013500 g bag for retail and convenience stores<\/p>\r\n        <dl class=\"sw-scenario-config\">\r\n          <dt>Model<\/dt><dd>SW-420A (small packs) \/ SW-620A (family size)<\/dd>\r\n          <dt>Weigher<\/dt><dd>10-head combination weigher, anti-breakage mode<\/dd>\r\n          <dt>Accuracy<\/dt><dd>\u00b11 g<\/dd>\r\n          <dt>Speed<\/dt><dd>~55 bags\/min (100 g format)<\/dd>\r\n          <dt>Add-ons<\/dt><dd>Nitrogen flushing for pillow-pack effect<\/dd>\r\n        <\/dl>\r\n      <\/div>\r\n\r\n      <div class=\"sw-scenario-card\">\r\n        <h3>Nuts, Seeds &amp; Dried Fruits<\/h3>\r\n        <p class=\"sw-scenario-subtitle\">100\u20131,000 g pouch for retail and bulk<\/p>\r\n        <dl class=\"sw-scenario-config\">\r\n          <dt>Model<\/dt><dd>SW-420A (\u22641 kg) \/ SW-620A (family\/bulk pack)<\/dd>\r\n          <dt>Weigher<\/dt><dd>10-head combination weigher, standard mode<\/dd>\r\n          <dt>Accuracy<\/dt><dd>\u00b11 g (\u2264100 g) \u00b7 \u00b11% (&gt;100 g)<\/dd>\r\n          <dt>Speed<\/dt><dd>~40 bags\/min (500 g format)<\/dd>\r\n          <dt>Clients<\/dt><dd>Nut processors, dried fruit exporters, trail mix brands<\/dd>\r\n        <\/dl>\r\n      <\/div>\r\n\r\n      <div class=\"sw-scenario-card\">\r\n        <h3>Candy &amp; Confectionery<\/h3>\r\n        <p class=\"sw-scenario-subtitle\">100\u2013500 g bag for retail display<\/p>\r\n        <dl class=\"sw-scenario-config\">\r\n          <dt>Model<\/dt><dd>SW-420A<\/dd>\r\n          <dt>Weigher<\/dt><dd>10-head combination weigher, gentle-drop mode<\/dd>\r\n          <dt>Accuracy<\/dt><dd>\u00b11 g<\/dd>\r\n          <dt>Speed<\/dt><dd>~50 bags\/min (200 g format)<\/dd>\r\n          <dt>Clients<\/dt><dd>Candy manufacturers, sugar confectionery brands, seasonal gift packers<\/dd>\r\n        <\/dl>\r\n      <\/div>\r\n\r\n      <div class=\"sw-scenario-card\">\r\n        <h3>Pet Food &amp; Animal Feed<\/h3>\r\n        <p class=\"sw-scenario-subtitle\">500\u20132,500 g bag for retail and wholesale<\/p>\r\n        <dl class=\"sw-scenario-config\">\r\n          <dt>Model<\/dt><dd>SW-620A (\u22642.5 kg) \/ SW-820A (\u22652.5 kg)<\/dd>\r\n          <dt>Weigher<\/dt><dd>10-head combination weigher, high-capacity buckets<\/dd>\r\n          <dt>Accuracy<\/dt><dd>\u00b11%<\/dd>\r\n          <dt>Speed<\/dt><dd>~25 bags\/min (2 kg format)<\/dd>\r\n          <dt>Clients<\/dt><dd>Pet food brands, animal feed manufacturers, co-packers<\/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-420A\/520A\/620A\/720A\/820A is optimized for granular products. For fine powders (spice, flour, milk powder), see the <a href=\"\/collar-type-packing-machine\/collar-type-auger-powder-automatic-packing-machine\/\" style=\"color:inherit;text-decoration:none\">SW-420E\/620E auger powder machine<\/a>. For liquids (sauce, milk, vinegar), see the <a href=\"\/collar-type-packing-machine\/collar-type-liquid-packing-machine\/\" style=\"color:inherit;text-decoration:none\">SW-420F collar type liquid packing machine<\/a>.<\/p>\r\n  <\/div>\r\n<\/section>\r\n\r\n\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 Types: 3-Side Seal &amp; Gusset Pouches<\/h2>\r\n      <p>The SW-420A\/520A\/620A\/720A\/820A forms bags in-line from roll film using a triangular forming collar. The standard output is a three-side-seal bag \u2014 a back seam runs along one side, and horizontal cross-seals close the top and bottom. An optional gusseted bag device adds side gussets for increased volume. This is the most cost-effective format for granule portioning: low material cost per bag, excellent seal strength, and compatibility with nitrogen flushing for fragile products like chips.<\/p>\r\n    <\/div>\r\n\r\n    <!-- Product samples showing the bag format output -->\r\n    <div class=\"sw-bag-samples\">\r\n      <div class=\"sw-bag-sample-item\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/02\/Fin-Seal-Pouch-for-chips.webp\"\r\n             alt=\"Lay's potato chips in fin-seal bag \u2014 packed by SW-420A collar type multi-head weigher packing machine\"\r\n             width=\"300\" height=\"300\" loading=\"lazy\">\r\n        <p>Potato Chips \u2014 fin-seal bag with nitrogen flush<\/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\/2024\/02\/3-Side-Seal-for-pet-food.webp\"\r\n             alt=\"Gummy candy in 3-side seal pouch \u2014 packed by SW-420A collar type granule weigher packing machine\"\r\n             width=\"300\" height=\"300\" loading=\"lazy\">\r\n        <p>Gummy Candy \u2014 3-side seal pouch, retail display<\/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\/2024\/02\/Gusset-Pouch-for-Coffee-Bean.webp\"\r\n             alt=\"Coffee beans in gusset pouch \u2014 packed by SW-620A collar type weigher machine with gusset device\"\r\n             width=\"300\" height=\"300\" loading=\"lazy\">\r\n        <p>Coffee Beans \u2014 gusset pouch (optional device)<\/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\/3-Side-Seal-Pouch.webp\"\r\n             alt=\"3-side seal pouch structural diagram \u2014 standard output of SW-420A collar type granule weigher packing machine\" width=\"500\" height=\"500\" loading=\"lazy\">\r\n        <p>3-Side Seal (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\/Back-Seal-Pouch.webp\"\r\n             alt=\"Back seal pouch structural diagram \u2014 alternative sealing format for collar type VFFS granule machine\" width=\"500\" height=\"500\" loading=\"lazy\">\r\n        <p>Back Seal (Fin Seal)<\/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\/Gusset-Pouch.webp\"\r\n             alt=\"Gusset pouch structural diagram \u2014 optional with gusseted bag device on SW-420A\/520A\/620A\/720A\/820A\" width=\"500\" height=\"500\" loading=\"lazy\">\r\n        <p>Gusset Pouch (Optional Add-On)<\/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 materials:<\/strong> PE, CPP, PET\/PE laminate, aluminum foil composite, nylon laminate, BOPP. Aluminum foil laminates are recommended for moisture-sensitive or light-sensitive granule products. Nitrogen-compatible films are essential for pillow-pack snack applications.<\/p>\r\n    <p style=\"margin-top:12px;font-size:0.9rem;color:rgba(255,255,255,.4)\">Note: The SW-420A\/520A\/620A\/720A\/820A does not support stand-up pouches, zipper bags, or flat-bottom bags. If these formats are required, see the <a href=\"\/premade-bag-packing-machine\/premade-bag-granule-packing-machine\/\" style=\"color:rgba(255,255,255,.55)\">SW-D premade bag granule machine<\/a>.<\/p>\r\n  <\/div>\r\n<\/section>\r\n\r\n\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 SW-420A Weighs, Forms, Fills, and Seals<\/h2>\r\n      <p>The SW-420A\/520A\/620A\/720A\/820A runs as a continuous-motion system \u2014 the multi-head weigher calculates the optimal combination of buckets while the VFFS unit forms, fills, and seals bags without stopping.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"sw-workflow-grid\">\r\n\r\n      <div class=\"sw-workflow-step\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/02\/Sending-Roll-Film.webp\"\r\n             alt=\"Roll film loading step \u2014 film feeds from roll through tension rollers into the forming collar\"\r\n             width=\"120\" height=\"120\" loading=\"lazy\">\r\n        <p class=\"sw-workflow-num\">01<\/p>\r\n        <h3 class=\"sw-workflow-title\">Roll Film Loading<\/h3>\r\n        <p class=\"sw-workflow-text\">A roll of packaging film (PE, aluminum foil laminate, or CPP) mounts on the film frame at the back of the machine. A servo motor pulls the film through dancer rollers that maintain constant tension. An automatic film-end stop halts the machine when the roll is depleted, preventing unsealed bags. Film width accommodates up to 820 mm on the SW-820A model.<\/p>\r\n      <\/div>\r\n\r\n      <div class=\"sw-workflow-step\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/02\/Forming-Bag.webp\"\r\n             alt=\"Bag forming collar step \u2014 triangular collar folds film into tube for VFFS collar type machine\"\r\n             width=\"120\" height=\"120\" loading=\"lazy\">\r\n        <p class=\"sw-workflow-num\">02<\/p>\r\n        <h3 class=\"sw-workflow-title\">Bag Forming &amp; Vertical Sealing<\/h3>\r\n        <p class=\"sw-workflow-text\">The flat film wraps around a precision-machined triangular forming collar, which folds it into a continuous tube. Heated vertical sealing rollers press and seal the overlapping edges to create the back seam. Changing bag width requires only swapping the forming collar \u2014 a 15-minute tool-free adjustment. An Omron rotary encoder tracks film position for consistent bag length control.<\/p>\r\n      <\/div>\r\n\r\n      <div class=\"sw-workflow-step\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/02\/Feeding-and-Sealing.webp\"\r\n             alt=\"Multi-head weigher filling step \u2014 10-head combination weigher drops precise granule dose into bag tube\"\r\n             width=\"120\" height=\"120\" loading=\"lazy\">\r\n        <p class=\"sw-workflow-num\">03<\/p>\r\n        <h3 class=\"sw-workflow-title\">Multi-Head Weigher Filling<\/h3>\r\n        <p class=\"sw-workflow-text\">The Z-type bucket elevator lifts product from ground level to the 10-head combination weigher platform. Vibration feeders distribute product evenly across all 10 weighing buckets. The weigher controller calculates which combination of buckets produces the closest match to the target weight \u2014 running thousands of calculations per second. The selected buckets release simultaneously into the forming tube. This combination algorithm achieves \u00b11 g accuracy even with irregularly shaped products.<\/p>\r\n      <\/div>\r\n\r\n      <div class=\"sw-workflow-step\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/02\/Finished-Product.webp\"\r\n             alt=\"Sealing and cutting step \u2014 horizontal sealing jaws create top and bottom seals, knife cuts finished bag\"\r\n             width=\"120\" height=\"120\" loading=\"lazy\">\r\n        <p class=\"sw-workflow-num\">04<\/p>\r\n        <h3 class=\"sw-workflow-title\">Horizontal Sealing, Coding &amp; Cutting<\/h3>\r\n        <p class=\"sw-workflow-text\">After each fill, horizontal sealing jaws clamp across the tube to create the top seal of the filled bag and the bottom seal of the next bag simultaneously. Jaw temperature, dwell time, and pressure are independently adjustable per film type via the HMI. A date printer (standard) codes batch number and expiry date onto each pouch. A cutting knife then severs the finished pouch, which drops onto the output conveyor.<\/p>\r\n      <\/div>\r\n\r\n    <\/div>\r\n\r\n  <\/div>\r\n<\/section>\r\n\r\n\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\">Gallery &amp; Video<\/h2>\r\n    <\/div>\r\n\r\n    <div class=\"sw-gallery-wrapper\" id=\"swGallery\">\r\n      <div class=\"sw-gallery-main\" onclick=\"(function(el){var img=el.querySelector('img');var o=document.getElementById('swLightboxOverlay');document.getElementById('swLightboxImg').src=img.src;document.getElementById('swLightboxImg').alt=img.alt;document.getElementById('swLightboxCaption').textContent=document.getElementById('swGalleryCaption').textContent;o.classList.add('is-open')})(this)\">\r\n        <img decoding=\"async\" id=\"swGalleryMain\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-factory-floor-overview.webp\"\r\n             alt=\"SW-420A collar type multi-head weigher packing machine \u2014 full factory floor view with two complete packaging lines\"\r\n             width=\"1000\" height=\"800\"\r\n             loading=\"lazy\">\r\n        <span class=\"sw-arrow sw-arrow-prev\" onclick=\"event.stopPropagation();swGalleryNav(-1)\">&#10094;<\/span>\r\n        <span class=\"sw-arrow sw-arrow-next\" onclick=\"event.stopPropagation();swGalleryNav(1)\">&#10095;<\/span>\r\n      <\/div>\r\n      <p class=\"sw-gallery-caption\" id=\"swGalleryCaption\">SW-420A on factory floor \u2014 two complete granule packaging lines with multi-head weighers and Z-type elevators<\/p>\r\n\r\n      <div class=\"sw-gallery-thumbs\">\r\n        <div class=\"sw-gallery-thumb-item active\" onclick=\"swGalleryGo(0)\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-factory-floor-overview-150x150.webp\"\r\n               alt=\"SW-420A factory overview\" width=\"150\" height=\"150\" loading=\"lazy\">\r\n        <\/div>\r\n        <div class=\"sw-gallery-thumb-item\" onclick=\"swGalleryGo(1)\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-full-machine-front-view-150x150.webp\"\r\n               alt=\"SW-420A full machine front view\" width=\"150\" height=\"150\" loading=\"lazy\">\r\n        <\/div>\r\n        <div class=\"sw-gallery-thumb-item\" onclick=\"swGalleryGo(2)\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-bag-forming-collar-150x150.webp\"\r\n               alt=\"SW-420A bag forming collar\" width=\"150\" height=\"150\" loading=\"lazy\">\r\n        <\/div>\r\n        <div class=\"sw-gallery-thumb-item\" onclick=\"swGalleryGo(3)\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-vertical-sealing-pullbelt-150x150.webp\"\r\n               alt=\"SW-420A vertical sealing pull belt\" width=\"150\" height=\"150\" loading=\"lazy\">\r\n        <\/div>\r\n        <div class=\"sw-gallery-thumb-item\" onclick=\"swGalleryGo(4)\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-machine-door-open-interior-150x150.webp\"\r\n               alt=\"SW-420A machine interior\" width=\"150\" height=\"150\" loading=\"lazy\">\r\n        <\/div>\r\n        <div class=\"sw-gallery-thumb-item\" onclick=\"swGalleryGo(5)\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-output-conveyor-belt-150x150.webp\"\r\n               alt=\"SW-420A output conveyor\" width=\"150\" height=\"150\" loading=\"lazy\">\r\n        <\/div>\r\n        <div class=\"sw-gallery-thumb-item\" onclick=\"swGalleryGo(6)\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-multihead-weigher-top-view-150x150.webp\"\r\n               alt=\"SW-420A multi-head weigher top view\" width=\"150\" height=\"150\" loading=\"lazy\">\r\n        <\/div>\r\n        <div class=\"sw-gallery-thumb-item\" onclick=\"swGalleryGo(7)\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-weigher-vibration-feeder-150x150.webp\"\r\n               alt=\"SW-420A weigher vibration feeder\" width=\"150\" height=\"150\" loading=\"lazy\">\r\n        <\/div>\r\n        <div class=\"sw-gallery-thumb-item\" onclick=\"swGalleryGo(8)\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-z-type-elevator-control-panel-150x150.webp\"\r\n               alt=\"SW-420A Z-type elevator and control panel\" width=\"150\" height=\"150\" loading=\"lazy\">\r\n        <\/div>\r\n        <div class=\"sw-gallery-thumb-item\" onclick=\"swGalleryGo(9)\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-cross-sealing-bag-output-150x150.webp\"\r\n               alt=\"SW-420A cross sealing bag output\" width=\"150\" height=\"150\" loading=\"lazy\">\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <script>\r\n    (function(){\r\n      var slides=[\r\n        {src:'https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-factory-floor-overview.webp',alt:'SW-420A collar type multi-head weigher packing machine on factory floor \u2014 two complete packaging lines',cap:'SW-420A on factory floor \u2014 two complete granule packaging lines with multi-head weighers and Z-type elevators'},\r\n        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station \u2014 pull belts draw the film tube down while sealing jaws create horizontal seals'},\r\n        {src:'https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-machine-door-open-interior.webp',alt:'SW-420A machine interior with safety door open \u2014 film path, Siemens touch screen, and sealing mechanism visible',cap:'Machine interior with safety door open \u2014 Siemens HMI touch screen, film path, and sealing jaws visible'},\r\n        {src:'https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-output-conveyor-belt.webp',alt:'SW-420A output conveyor belt and sealing station \u2014 finished bags exit via blue PU belt conveyor',cap:'Output station \u2014 finished bags drop onto the PU belt conveyor, cross-seal jaws and temperature displays visible'},\r\n        {src:'https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-multihead-weigher-top-view.webp',alt:'SW-420A 10-head combination weigher top view \u2014 corn granules distributed across weighing buckets',cap:'10-head combination weigher from above \u2014 corn granules spread across vibration feeders and weighing buckets'},\r\n        {src:'https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-weigher-vibration-feeder.webp',alt:'SW-420A weigher vibration feeder troughs \u2014 product moves from radial feeder to individual weighing buckets',cap:'Vibration feeder troughs \u2014 product flows from the radial dispersion plate to individual weighing buckets'},\r\n        {src:'https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-z-type-elevator-control-panel.webp',alt:'SW-420A Z-type bucket elevator and control panel \u2014 automatic product feeding from ground level',cap:'Z-type bucket elevator and Siemens control panel \u2014 product lifts from ground-level hopper to the weigher platform'},\r\n        {src:'https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-cross-sealing-bag-output.webp',alt:'SW-420A horizontal cross-seal bag output \u2014 finished printed bags exiting the sealing station',cap:'Finished bags exiting the cross-seal station \u2014 printed film with brand graphics, sealed and cut ready for packing'}\r\n      ];\r\n      var idx=0;\r\n      var main=document.getElementById('swGalleryMain');\r\n      var cap=document.getElementById('swGalleryCaption');\r\n      var thumbs=document.querySelectorAll('#swGallery .sw-gallery-thumb-item');\r\n      function go(i){\r\n        idx=(i+slides.length)%slides.length;\r\n        main.src=slides[idx].src;\r\n        main.alt=slides[idx].alt;\r\n        cap.textContent=slides[idx].cap;\r\n        thumbs.forEach(function(t,j){t.classList.toggle('active',j===idx)});\r\n      }\r\n      window.swGalleryGo=go;\r\n      window.swGalleryNav=function(d){go(idx+d)};\r\n    })();\r\n    <\/script>\r\n\r\n    <div class=\"sw-video-wrapper\">\r\n      <iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/TNfLANeFF9M\"\r\n              title=\"SW-420A Collar Type Multi-Heads Granule Weigher Packing Machine \u2014 Factory Running Demo\"\r\n              frameborder=\"0\"\r\n              allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\"\r\n              allowfullscreen\r\n              loading=\"lazy\"><\/iframe>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\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\">Production Line<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">Complete Granule Packaging Line<\/h2>\r\n      <p>The SW-420A\/520A\/620A\/720A\/820A operates as a complete integrated system: Z-type bucket elevator, 10-head combination weigher, VFFS main machine, and output conveyor. ShengWei supplies all components as a turnkey line and provides a custom layout drawing with every quotation. An optional working platform with staircase gives operators safe access to the weigher for cleaning and maintenance.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"sw-equipment-grid\">\r\n      <div class=\"sw-equipment-item\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/02\/Main-Machine.webp\"\r\n             alt=\"SW-420A collar type VFFS main machine \u2014 vertical form-fill-seal unit for granule packaging\"\r\n             width=\"500\" height=\"500\" loading=\"lazy\">\r\n        <p class=\"sw-equipment-name\">SW-420A \/ 520A \/ 620A \/ 720A \/ 820A Main Machine<\/p>\r\n        <p class=\"sw-equipment-desc\">Core vertical form-fill-seal unit. Forms bags from roll film, receives weighed product from the multi-head weigher above, seals, codes, and cuts in one continuous cycle.<\/p>\r\n      <\/div>\r\n      <div class=\"sw-equipment-item\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/02\/Multi-head-Electronic-Weighter-768x768.webp\"\r\n             alt=\"10-head combination weigher \u2014 stainless steel multi-head weigher for high-accuracy granule dosing\"\r\n             width=\"500\" height=\"500\" loading=\"lazy\">\r\n        <p class=\"sw-equipment-name\">10-Head Combination Weigher<\/p>\r\n        <p class=\"sw-equipment-desc\">SUS304 stainless steel combination weigher with 10 independently controlled weighing buckets. Calculates optimal weight combinations at high speed for \u00b11 g accuracy on granular products.<\/p>\r\n      <\/div>\r\n      <div class=\"sw-equipment-item\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/02\/Z-Type-Conveyor-768x768.webp\"\r\n             alt=\"Z-type bucket elevator \u2014 stainless steel conveyor lifts granule product from ground to weigher platform\"\r\n             width=\"500\" height=\"500\" loading=\"lazy\">\r\n        <p class=\"sw-equipment-name\">Z-Type Bucket Elevator<\/p>\r\n        <p class=\"sw-equipment-desc\">Inclined bucket conveyor lifts product from ground-level hopper to the weigher dispersion plate. Food-grade PU buckets prevent product contamination. Variable speed control matches the packing speed.<\/p>\r\n      <\/div>\r\n      <div class=\"sw-equipment-item\">\r\n        <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/02\/Platform-768x768.webp\"\r\n             alt=\"Stainless steel working platform with staircase \u2014 operator access to multi-head weigher for cleaning\"\r\n             width=\"500\" height=\"500\" loading=\"lazy\">\r\n        <p class=\"sw-equipment-name\">Working Platform &amp; Staircase<\/p>\r\n        <p class=\"sw-equipment-desc\">Stainless steel elevated platform with safety railings and staircase. Provides operator access to the multi-head weigher for daily cleaning, bucket inspection, and product changeover.<\/p>\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <h3 class=\"sw-title-sub\" style=\"margin-top:48px\">Optional Add-Ons<\/h3>\r\n    <p style=\"margin-bottom:18px\">All options are factory-installed and integrated with the Siemens PLC control system. Request a configuration when you inquire.<\/p>\r\n    <ul class=\"sw-options-list\">\r\n      <li>Nitrogen flushing device \u2014 injects nitrogen before horizontal sealing for pillow-pack effect on chips and fragile snacks<\/li>\r\n      <li>Gusseted bag device \u2014 adds side gussets to increase pouch volume without changing bag width<\/li>\r\n      <li>Checkweigher \u2014 downstream weight verification with automatic reject gate for 100% weight compliance<\/li>\r\n      <li>Metal detector \u2014 downstream inline detection for food safety compliance (HACCP\/BRC)<\/li>\r\n      <li>Finished bag conveyor \u2014 extended output belt for accumulation and manual case packing<\/li>\r\n      <li>Automatic correction motor \u2014 electrically compensates vertical seal offset via HMI without stopping<\/li>\r\n      <li>Hole punch device \u2014 creates a hang hole in each bag for retail display hooks<\/li>\r\n    <\/ul>\r\n\r\n    <div style=\"margin-top:28px\">\r\n      <a href=\"javascript:void(0)\"\r\n         onclick=\"if(typeof elementorProFrontend!=='undefined'){elementorProFrontend.modules.popup.showPopup({id:840})}\"\r\n         class=\"sw-btn-primary\">Ask About Line Configuration<\/a>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\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 electrical and pneumatic component on the SW-420A\/520A\/620A\/720A\/820A is sourced from established industrial brands. Part numbers are listed on the quotation sheet \u2014 you can verify pricing and availability before you commit to an 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=\"Siemens SMART 700 HMI touch screen \u2014 SW-420A collar type granule weigher packing machine control panel\">\r\n        <img decoding=\"async\" class=\"sw-component-card__img\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/siemens-smart-700-hmi-touchscreen-premade-bag-packing-machine.webp\"\r\n             alt=\"Siemens SMART 700 HMI touch screen on SW-420A collar type granule weigher packing machine\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">Siemens SMART 700 HMI<\/p>\r\n          <p class=\"sw-component-card__desc\">7-inch colour touch screen. Controls bag length, sealing temperature, production count, and weigher communication. Multi-language support on request.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-component-card\" onclick=\"swLightbox(this)\" data-alt=\"Siemens PLC \u2014 SW-420A collar type granule weigher packing machine control system\">\r\n        <img decoding=\"async\" class=\"sw-component-card__img\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/siemens-s7-200-plc-cpu224-premade-bag-packing-machine.webp\"\r\n             alt=\"Siemens PLC controller in SW-420A collar type granule weigher packing machine\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">Siemens PLC<\/p>\r\n          <p class=\"sw-component-card__desc\">Programmable logic controller coordinating weigher signal, film pull, sealing jaws, and cutter in real-time. Fault diagnostics display on HMI panel.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-component-card\" onclick=\"swLightbox(this)\" data-alt=\"AirTAC 4V210 solenoid valve \u2014 pneumatic control for SW-420A sealing jaw and cutting cylinder\">\r\n        <img decoding=\"async\" class=\"sw-component-card__img\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/airtac-4v210-solenoid-valve-premade-bag-packing-machine.webp\"\r\n             alt=\"AirTAC 4V210 solenoid valve controlling pneumatic sealing and cutting cylinders on SW-420A\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">AirTAC Solenoid Valve<\/p>\r\n          <p class=\"sw-component-card__desc\">Controls the pneumatic sealing jaw and cutting cylinder actuation. High-cycle rated for continuous multi-shift granule packaging production.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-component-card\" onclick=\"swLightbox(this)\" data-alt=\"Omron rotary encoder \u2014 film position feedback on SW-420A collar type granule weigher packing machine\">\r\n        <img decoding=\"async\" class=\"sw-component-card__img\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/omron-e6b2-cwz6c-rotary-encoder-premade-bag-packing-machine.webp\"\r\n             alt=\"Omron rotary encoder for film position detection and bag length control on SW-420A\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">Omron Rotary Encoder<\/p>\r\n          <p class=\"sw-component-card__desc\">Precision film position feedback for accurate bag length control. Ensures consistent cut position even as film tension varies during production runs.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-component-card\" onclick=\"swLightbox(this)\" data-alt=\"SMC guide cylinder \u2014 sealing jaw actuation on SW-420A granule weigher packing machine\">\r\n        <img decoding=\"async\" class=\"sw-component-card__img\"\r\n             src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/smc-guide-cylinder-premade-bag-packing-machine.webp\"\r\n             alt=\"SMC guided pneumatic cylinder for horizontal sealing jaw on SW-420A collar type packing machine\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">SMC Guide Cylinder<\/p>\r\n          <p class=\"sw-component-card__desc\">Anti-rotation guided cylinder for sealing jaw actuation. Consistent jaw alignment maintains seal quality across the full bag count.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"sw-component-card\" onclick=\"swLightbox(this)\" data-alt=\"Schneider Easy9 circuit breaker \u2014 SW-420A granule weigher packing machine electrical protection\">\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 Easy9 circuit breaker in SW-420A collar type granule weigher packing machine electrical cabinet\"\r\n             loading=\"lazy\">\r\n        <div class=\"sw-component-card__body\">\r\n          <p class=\"sw-component-card__name\">Schneider Circuit Breaker<\/p>\r\n          <p class=\"sw-component-card__desc\">CE-compliant thermal-magnetic protection for main electrical cabinet. Overcurrent and short-circuit protection for motor and control circuits.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n<!-- Lightbox (shared) -->\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<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\">Collar Type VFFS vs Premade Bag: Which Is Right for Your Granule Product?<\/h2>\r\n      <p>Both the SW-420A\/520A\/620A\/720A\/820A (collar type) and the SW-D series (premade bag) package granules automatically. The right choice depends on your bag format requirements, production volume, and per-bag material cost sensitivity.<\/p>\r\n    <\/div>\r\n\r\n    <div style=\"margin-bottom: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:10px\">Choose SW-420A\/520A\/620A\/720A\/820A When:<\/h3>\r\n      <ul class=\"sw-feature-list\">\r\n        <li>You weigh irregular or mixed-shape granules \u2014 chips, mixed nuts, candy, pet food, trail mix, seeds \u2014 where uniform piece weight cannot be assumed<\/li>\r\n        <li>Higher dosing accuracy is required \u2014 the 10-head combination weigher achieves \u00b11 g, compared to \u00b11% on auger and \u00b11\u20132% on volumetric cup systems<\/li>\r\n        <li>Your fill weight is 100\u20132,500 g+ \u2014 too large for compact linear weighers, too irregular for volumetric cups<\/li>\r\n        <li>You run a single high-volume snack or pet food SKU and need nitrogen flushing inline before sealing<\/li>\r\n        <li>If your product is a fine powder, see the <a href=\"\/collar-type-packing-machine\/collar-type-auger-powder-automatic-packing-machine\/\">SW-420E auger<\/a>; if a uniform free-flowing granule under 100 g at lowest cost, see the <a href=\"\/collar-type-packing-machine\/collar-type-measure-cups-packing-machine\/\">SW-320D cup<\/a> or <a href=\"\/collar-type-packing-machine\/collar-type-linear-weigher-packing-machine\/\">SW-320C linear weigher<\/a>; if a liquid, see the <a href=\"\/collar-type-packing-machine\/collar-type-liquid-packing-machine\/\">SW-420F<\/a><\/li>\r\n      <\/ul>\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 Collar Type SW-420A\/520A\/620A\/720A\/820A When:<\/h3>\r\n        <ul class=\"sw-feature-list\">\r\n          <li>You need simple 3-side seal or back-seal bags at high daily volume \u2014 rollstock film costs meaningfully less than premade pouches<\/li>\r\n          <li>Your product is a dry, free-flowing granule (chips, nuts, seeds, candy, pet kibble, hardware)<\/li>\r\n          <li>Nitrogen flushing is required for chips or fragile products \u2014 collar type supports inline nitrogen injection before sealing<\/li>\r\n          <li>High speed matters \u2014 30\u201370 bags\/min compared to 15\u201350 bags\/min on premade bag machines<\/li>\r\n          <li>You run high-volume, single-SKU production with infrequent changeovers<\/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=\"\/premade-bag-packing-machine\/premade-bag-granule-packing-machine\/\" style=\"color:inherit\">Premade Bag SW-D Series<\/a> When:<\/h3>\r\n        <ul class=\"sw-feature-list\">\r\n          <li>You need stand-up pouches, zipper bags, or flat-bottom bags \u2014 formats that collar type cannot produce<\/li>\r\n          <li>High-quality pre-printed graphics are important for retail shelf presentation<\/li>\r\n          <li>You run multiple SKUs and switch bag sizes or formats frequently within a shift<\/li>\r\n          <li>Your product requires a resealable package for consumer retail (e.g. premium nuts, trail mix)<\/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 Neither Is the Right Fit<\/h3>\r\n      <p style=\"margin:0;color:var(--sw-text);line-height:1.72\">For powder products (spice, flour, milk powder) that require auger screw dosing instead of weighing, see the <a href=\"\/collar-type-packing-machine\/collar-type-auger-powder-automatic-packing-machine\/\" style=\"color:inherit;text-decoration:none\">SW-420E\/620E collar type auger powder machine<\/a>. For liquid products, see the <a href=\"\/collar-type-packing-machine\/collar-type-liquid-packing-machine\/\" style=\"color:inherit;text-decoration:none\">SW-420F collar type liquid packing machine<\/a>.<\/p>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\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 <a href=\"\/factory\/\">11,000 m\u00b2 factory<\/a> in Shantou, Guangdong. No trading companies or middlemen \u2014 you communicate directly with the production engineers who build and test your machine before shipment.<\/p>\r\n      <\/div>\r\n      <div class=\"sw-why-item\">\r\n        <h3>Turnkey Granule Packaging Lines<\/h3>\r\n        <p>We supply the complete system as a single purchase: VFFS main machine, multi-head weigher, Z-type elevator, working platform, output conveyor, and optional checkweigher \/ metal detector. One supplier, one warranty, one point of contact.<\/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 only during the warranty period. Common spare parts typically ship from our Guangdong factory within 3 working days. On-site installation is available on request.<\/p>\r\n      <\/div>\r\n      <div class=\"sw-why-item\">\r\n        <h3>80+ Export Countries<\/h3>\r\n        <p>ShengWei granule packing machines are deployed in the UAE, Saudi Arabia, Nigeria, Indonesia, Mexico, Colombia, and 70+ additional markets across snack food, pet food, confectionery, and agricultural processing industries.<\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\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\">Factory Acceptance Test<\/span>\r\n      <h2 class=\"sw-section-title\" style=\"text-align:left\">Tested Before Shipment \u2014 How We Prove the SW-420A Series<\/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-name\">72-Hour Run Test on Your Recipe<\/p>\r\n        <p>Every SW-420A goes through a structured Factory Acceptance Test before it ships: a 72-hour continuous run with actual packaging film and product material, with speed, seal quality, weight accuracy, and rejection rate all logged. For a collar-type machine that means verifying multi-head weigher dosing accuracy on your actual product, checking the feed-to-bag-forming handover at speed across your bag sizes (80\u2013200 mm bag widths on the SW-420A, 130\u2013250 mm on the SW-520A, 150\u2013300 mm on the SW-620A, 170\u2013350 mm on the SW-720A, 200\u2013400 mm on the SW-820A), and holding output stable across the 30\u201370 bags\/min (SW-420A), 25\u201365 (SW-520A), 20\u201360 (SW-620A), 20\u201355 (SW-720A), and 20\u201350 (SW-820A) range. Send your product and film and the FAT runs on your recipe, not on a generic substitute.<\/p>\r\n      <\/div>\r\n      <div class=\"sw-testimonial\">\r\n        <p class=\"sw-testimonial-name\">Approve Before We Crate<\/p>\r\n        <p>Before crating, our QC team sends you the FAT report, a test video of your machine running, and photos for approval. If your order requires it, we coordinate SGS, Bureau Veritas, or T\u00dcV pre-shipment inspection and provide full access to the machine and test records. See how the 4-person QC team works at our <a href=\"\/factory\/\">Factory &amp; Quality Center<\/a>.<\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\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-420A\/520A\/620A\/720A\/820A handle?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          The SW-420A\/520A\/620A\/720A\/820A is designed for dry, free-flowing granular products. Typical products include potato chips, corn snacks, puffed rice, roasted nuts, sunflower seeds, dried fruits, candy, gummy bears, brown sugar cubes, pet food kibble, bird seed, coffee beans, pasta, and small hardware parts (screws, bolts). For fine powders that require volumetric auger dosing rather than weighing, see the SW-420E\/620E auger powder machine.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>How does the 10-head combination weigher achieve \u00b11 g accuracy?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          The combination weigher distributes product across 10 independently weighed buckets. A high-speed microprocessor calculates which combination of buckets produces the closest match to the target weight \u2014 evaluating over 1,000 combinations per second. By selecting the optimal subset of buckets (rather than dosing a single stream), the weigher consistently achieves \u00b11 g accuracy for weights up to 100 g and \u00b11% for heavier fills. Accuracy depends on individual piece weight \u2014 smaller, more uniform pieces yield better results.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>What is the difference between the SW-420A, SW-520A, SW-620A, SW-720A, and SW-820A?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          The five models differ primarily in bag size capacity and machine footprint. The SW-420A handles bag widths up to 200 mm and fill weights up to 1,000 g \u2014 suitable for small to medium retail packs. The SW-520A handles bag widths up to 250 mm. The SW-620A handles bag widths up to 300 mm and fill weights up to 2,500 g \u2014 suitable for family-size and bulk packs. The SW-720A handles bag widths up to 350 mm. The SW-820A handles bag widths up to 400 mm and fill weights above 2,500 g \u2014 designed for large industrial or retail bags. All five share the same Siemens PLC, 10-head weigher, and frame construction.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>Can the machine pack chips without breaking them?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          Yes. The 10-head combination weigher includes an anti-breakage mode that reduces vibration feeder amplitude and gate opening speed to minimize product damage. The product falls from the weigher buckets through a smooth stainless steel chute into the forming tube \u2014 the drop height is minimized by design. For chips and other fragile products, we also recommend the nitrogen flushing option, which inflates each bag with nitrogen before sealing to create a protective cushion around the product.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>How does collar type VFFS compare to a premade bag machine for granules?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          A collar type VFFS machine forms each bag in-line from a roll of packaging film. The film wraps around a triangular forming collar into a tube, which is then sealed, filled, and cut in a single continuous motion. A premade bag machine loads pre-manufactured pouches from a magazine. The collar type uses lower-cost rollstock film and produces 3-side seal, back-seal, and gusset bags. The premade bag machine supports premium formats (stand-up, zipper, flat-bottom) at a higher per-bag material cost. For high-volume granule production where simple bag formats are acceptable, the collar type with multi-head weigher is typically the more cost-effective solution.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>How long does it take to change bag size?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          Changing bag length is done digitally on the Siemens HMI touch screen \u2014 the setting takes effect on the next bag cycle without stopping production. Changing bag width requires replacing the forming collar \u2014 a 15-minute manual swap performed at a planned stop, no tools required. Changing the target fill weight is adjusted on the weigher controller, also effective immediately. A full format change (different film roll + new collar + new weight setting) takes approximately 20 minutes for a trained operator.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>What film materials are compatible with the SW-420A\/520A\/620A\/720A\/820A?<\/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 standard flexible packaging rollstock: PE, CPP, PET\/PE laminate, aluminum foil composite, nylon\/PE laminate, BOPP, and metallized films. For nitrogen-flushed chip bags, use a film with adequate gas barrier properties (PET\/aluminum\/PE or PET\/nylon\/PE laminate). Sealing temperature and jaw pressure are independently adjustable for each material type via the HMI. Send us a sample of your intended film for a pre-production sealing test confirmation.\r\n        <\/div>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>\r\n          <h3>Does the system include automatic product feeding?<\/h3>\r\n          <span class=\"sw-acc-icon\"><\/span>\r\n        <\/summary>\r\n        <div class=\"sw-acc-body\">\r\n          Yes. The complete system includes a Z-type bucket elevator that automatically lifts product from a ground-level hopper to the multi-head weigher platform. The elevator speed is variable and synchronized with the packing speed. Operators only need to keep the ground-level hopper filled \u2014 either manually or via a bulk conveyor from upstream processing equipment. The weigher's vibration feeders distribute product evenly across all 10 weighing buckets automatically.\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 25\u201335 working days after deposit confirmation (the multi-head weigher system requires additional assembly and calibration time compared to simpler machines). Payment terms: 30% deposit on order, 70% balance before shipment (T\/T). Custom configurations (non-standard voltage, special weigher bucket size, additional accessories) may add 5\u201310 working days. Contact us with your full specification for a confirmed production schedule.\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 operating conditions. Wear parts (sealing strips, heating elements, weigher bucket springs) are excluded. Common spare parts typically ship from our Guangdong factory within 3 working days. Remote video technical support is provided free of charge for the lifetime of the machine \u2014 including weigher calibration guidance, PLC parameter adjustments, and troubleshooting. On-site installation and operator training are available on request, with travel costs quoted separately.\r\n        <\/div>\r\n      <\/details>\r\n\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\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>Seal Strength vs Seal Integrity<\/h3>\r\n        <p>Why a strong-looking seal can still leak, which seal-integrity test finds what, and how the four sealing methods compare.<\/p>\r\n        <a href=\"\/bag-seal-types-comparison\/\">Read the Sealing Guide \u2192<\/a>\r\n      <\/div>\r\n      <div class=\"sw-expert-card\">\r\n        <h3>Multi-Head Weigher vs Auger vs Cup<\/h3>\r\n        <p>The accuracy mechanism, give-away cost, cleaning, and failure modes of the three dosing methods compared.<\/p>\r\n        <a href=\"\/multi-head-weigher-vs-auger-filler\/\">Compare Dosing Methods \u2192<\/a>\r\n      <\/div>\r\n      <div class=\"sw-expert-card\">\r\n        <h3>How to Choose the Right Packaging Machine<\/h3>\r\n        <p>A step-by-step buyer's path \u2014 product type, bag format, dosing, speed, and budget walked through in order.<\/p>\r\n        <a href=\"\/how-to-choose-packaging-machine\/\">Read the Choosing Guide \u2192<\/a>\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 Granule &amp; Collar Type Machines<\/h3>\r\n    <p style=\"margin-bottom:28px;color:var(--sw-text-soft)\">Same collar type platform or same granule application \u2014 different configurations.<\/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-420E<\/span>\r\n        <div class=\"sw-card-img\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420E-620E-collar-type-auger-powder-packing-machine-768x768.webp\"\r\n               alt=\"SW-420E collar type auger powder packing machine for spice, flour, and chemical powder\"\r\n               width=\"500\" height=\"375\" loading=\"lazy\">\r\n        <\/div>\r\n        <span class=\"sw-card-tag\">Collar Type<\/span>\r\n        <h3 class=\"sw-title-sub\">Collar Type Auger Powder Machine<\/h3>\r\n        <p>Auger screw filling for fine powder: spice, flour, chemical powder. Same collar type platform with servo-driven auger.<\/p>\r\n        <div class=\"sw-card-footer\">\r\n          <a href=\"\/collar-type-packing-machine\/collar-type-auger-powder-automatic-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-320C<\/span>\r\n        <div class=\"sw-card-img\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/04\/SW-320C-collar-type-4-heads-linear-weigher-packing-machine-768x1127.webp\"\r\n               alt=\"SW-320C collar type 4-head linear weigher packing machine for budget-friendly granule packing\"\r\n               width=\"768\" height=\"1127\" loading=\"lazy\">\r\n        <\/div>\r\n        <span class=\"sw-card-tag\">Collar Type<\/span>\r\n        <h3 class=\"sw-title-sub\">4-Head Linear Weigher Machine<\/h3>\r\n        <p>4-head linear weigher for budget-friendly granule packing. Compact alternative to multi-head weigher systems.<\/p>\r\n        <div class=\"sw-card-footer\">\r\n          <a href=\"\/collar-type-packing-machine\/collar-type-linear-weigher-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-D200<\/span>\r\n        <div class=\"sw-card-img\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2024\/01\/Granule-Packing-Machine.webp\"\r\n               alt=\"SW-D200 premade bag granule packing machine for stand-up and zipper pouches\"\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 Granule Machine<\/h3>\r\n        <p>Rotary premade bag machine for granules. Uses pre-formed pouches instead of roll stock film for premium shelf presentation.<\/p>\r\n        <div class=\"sw-card-footer\">\r\n          <a href=\"\/premade-bag-packing-machine\/premade-bag-granule-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 Collar Type: <a href=\"\/collar-type-packing-machine\/collar-type-measure-cups-packing-machine\/\">Measure Cups (SW-320D)<\/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=\"\/3-side-seal-pouch-packing-machine\/\">3 Side Seal<\/a> &middot; <a href=\"\/back-seal-pouch-packing-machine\/\">Back Seal<\/a> &middot; <a href=\"\/gusset-bag-packing-machine\/\">Gusset Bag<\/a> &middot; <a href=\"\/stand-up-pouch-packing-machine\/\">Stand-Up Pouch<\/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=\"\/collar-type-packing-machine\/\" class=\"sw-btn-secondary\">View All Collar Type 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-vertical-packing-machine\/\" class=\"sw-btn-secondary\">Vertical Packing Machines \u2192<\/a>\r\n    <\/div>\r\n\r\n  <\/div>\r\n<\/section>\r\n\r\n\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-420A\/520A\/620A\/720A\/820A?<\/h2>\r\n        <p class=\"sw-lead\">Send us your product type, target fill weight, speed requirement, and bag dimensions. We will confirm suitability, recommend the correct model, 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\r\n        <div class=\"sw-sales-signature\">\r\n          <img decoding=\"async\" src=\"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/04\/hellena-ji-international-sales-manager-150x150.webp\"\r\n               alt=\"Hellena Ji, International Sales Manager at ShengWei Machinery\"\r\n               width=\"80\" height=\"80\" loading=\"lazy\">\r\n          <div>\r\n            <strong><a href=\"\/contact\/\">Hellena Ji<\/a><\/strong> \u00b7 International Sales Manager<br>\r\n            Usually replies within one business day \u00b7 Helps packaging buyers across 80+ countries\r\n          <\/div>\r\n        <\/div>\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           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+SW-420A%2F620A%2F820A+Collar+Type+Multi-Heads+Granule+Weigher+Packing+Machine.+My+product+is%3A+[product+type]%2C+fill+weight%3A+[Xg]%2C+target+speed%3A+[X+bags%2Fmin].\" class=\"sw-btn-secondary\" target=\"_blank\" rel=\"noopener\">WhatsApp Us<\/a>\r\n      <\/div>\r\n\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\r\n\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\": \"Collar Type Packing Machine\", \"item\": \"https:\/\/www.shengweimachine.com\/collar-type-packing-machine\/\" },\r\n      { \"@type\": \"ListItem\", \"position\": 3, \"name\": \"Collar Type Multi-Heads Granule Weigher Packing Machine\", \"item\": \"https:\/\/www.shengweimachine.com\/collar-type-packing-machine\/collar-type-multi-heads-granule-weigher-packing-machine\/\" }\r\n    ]\r\n  },\r\n  {\r\n    \"@context\": \"https:\/\/schema.org\",\r\n    \"@type\": \"Product\",\r\n    \"name\": \"Collar Type Multi-Heads Granule Weigher Packing Machine\",\r\n    \"description\": \"Vertical form-fill-seal (VFFS) machine with integrated 10-head combination weigher for granule products. The SW-420A\/520A\/620A\/720A\/820A forms 3-side seal bags from roll film and fills via multi-head weigher at 20\u201370 bags\/min with \u00b11 g accuracy. Suitable for chips, nuts, candy, pet food, seeds, and hardware. Siemens PLC + HMI, SUS304 stainless steel, Z-type elevator included.\",\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-420A \/ SW-520A \/ SW-620A \/ SW-720A \/ SW-820A\",\r\n    \"url\": \"https:\/\/www.shengweimachine.com\/collar-type-packing-machine\/collar-type-multi-heads-granule-weigher-packing-machine\/\",\r\n    \"image\": \"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/03\/SW-420A-620A-820A-collar-type-multihead-weigher-packing-machine.webp\",\r\n    \"category\": \"Collar Type Packing Machine\",\r\n    \"sku\": \"SW-420A\",\r\n    \"mpn\": \"SW-420A\",\r\n    \"seller\": {\r\n      \"@type\": \"Person\",\r\n      \"name\": \"Hellena Ji\",\r\n      \"jobTitle\": \"International Sales Manager\",\r\n      \"image\": \"https:\/\/www.shengweimachine.com\/wp-content\/uploads\/2026\/04\/hellena-ji-international-sales-manager-150x150.webp\",\r\n      \"worksFor\": {\r\n        \"@type\": \"Organization\",\r\n        \"name\": \"Guangdong ShengWei Machinery Technology Co., Ltd.\"\r\n      }\r\n    },\r\n    \"additionalProperty\": [\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Packing Speed\", \"value\": \"20\u201370 bags\/min\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Film Width Range\", \"value\": \"\u2264420 mm \/ \u2264520 mm \/ \u2264620 mm \/ \u2264720 mm \/ \u2264820 mm\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Fill Weight Range\", \"value\": \"100\u20132,500+ g\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Weighing Accuracy\", \"value\": \"\u00b11 g (\u2264100 g) \u00b7 \u00b11% (>100 g)\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Weigher Type\", \"value\": \"10-head combination weigher\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Control System\", \"value\": \"Siemens PLC + HMI\" },\r\n      { \"@type\": \"PropertyValue\", \"name\": \"Contact Material\", \"value\": \"SUS304 Stainless Steel\" }\r\n    ]\r\n  },\r\n  {\r\n    \"@context\": \"https:\/\/schema.org\",\r\n    \"@type\": \"FAQPage\",\r\n    \"mainEntity\": [\r\n      {\r\n        \"@type\": \"Question\",\r\n        \"name\": \"What products can the SW-420A\/520A\/620A\/720A\/820A handle?\",\r\n        \"acceptedAnswer\": {\r\n          \"@type\": \"Answer\",\r\n          \"text\": \"The SW-420A\/520A\/620A\/720A\/820A is designed for dry, free-flowing granular products. Typical products include potato chips, corn snacks, puffed rice, roasted nuts, sunflower seeds, dried fruits, candy, gummy bears, brown sugar cubes, pet food kibble, bird seed, coffee beans, pasta, and small hardware parts.\"\r\n        }\r\n      },\r\n      {\r\n        \"@type\": \"Question\",\r\n        \"name\": \"How does the 10-head combination weigher achieve \u00b11 g accuracy?\",\r\n        \"acceptedAnswer\": {\r\n          \"@type\": \"Answer\",\r\n          \"text\": \"The combination weigher distributes product across 10 independently weighed buckets. A high-speed microprocessor calculates which combination of buckets produces the closest match to the target weight \u2014 evaluating over 1,000 combinations per second. By selecting the optimal subset of buckets, the weigher consistently achieves \u00b11 g accuracy for weights up to 100 g and \u00b11% for heavier fills.\"\r\n        }\r\n      },\r\n      {\r\n        \"@type\": \"Question\",\r\n        \"name\": \"What is the difference between the SW-420A, SW-520A, SW-620A, SW-720A, and SW-820A?\",\r\n        \"acceptedAnswer\": {\r\n          \"@type\": \"Answer\",\r\n          \"text\": \"The SW-420A handles bag widths up to 200 mm and fill weights up to 1,000 g. The SW-520A handles bag widths up to 250 mm. The SW-620A handles bag widths up to 300 mm and fill weights up to 2,500 g. The SW-720A handles bag widths up to 350 mm. The SW-820A handles bag widths up to 400 mm and fill weights above 2,500 g. All five share the same Siemens PLC, 10-head weigher, and frame construction.\"\r\n        }\r\n      },\r\n      {\r\n        \"@type\": \"Question\",\r\n        \"name\": \"Can the machine pack chips without breaking them?\",\r\n        \"acceptedAnswer\": {\r\n          \"@type\": \"Answer\",\r\n          \"text\": \"Yes. The 10-head combination weigher includes an anti-breakage mode that reduces vibration feeder amplitude and gate opening speed. The product falls through a smooth stainless steel chute with minimized drop height. Nitrogen flushing is recommended to create a protective cushion around fragile products.\"\r\n        }\r\n      },\r\n      {\r\n        \"@type\": \"Question\",\r\n        \"name\": \"How does collar type VFFS compare to a premade bag machine for granules?\",\r\n        \"acceptedAnswer\": {\r\n          \"@type\": \"Answer\",\r\n          \"text\": \"A collar type VFFS machine forms each bag from roll film \u2014 lower material cost, higher speed (30\u201370 bags\/min), but limited to 3-side seal, back-seal, and gusset formats. A premade bag machine supports premium formats (stand-up, zipper, flat-bottom) at higher per-bag cost. For high-volume granule production, collar type is typically more cost-effective.\"\r\n        }\r\n      },\r\n      {\r\n        \"@type\": \"Question\",\r\n        \"name\": \"How long does it take to change bag size?\",\r\n        \"acceptedAnswer\": {\r\n          \"@type\": \"Answer\",\r\n          \"text\": \"Bag length changes are digital (instant via HMI). Bag width changes require swapping the forming collar \u2014 15 minutes, no tools. A full format change (new film roll + collar + weight setting) takes approximately 20 minutes.\"\r\n        }\r\n      },\r\n      {\r\n        \"@type\": \"Question\",\r\n        \"name\": \"What film materials are compatible with the SW-420A\/520A\/620A\/720A\/820A?\",\r\n        \"acceptedAnswer\": {\r\n          \"@type\": \"Answer\",\r\n          \"text\": \"Compatible with PE, CPP, PET\/PE laminate, aluminum foil composite, nylon\/PE laminate, BOPP, and metallized films. For nitrogen-flushed chip bags, use film with adequate gas barrier properties. Sealing parameters are adjustable per material type.\"\r\n        }\r\n      },\r\n      {\r\n        \"@type\": \"Question\",\r\n        \"name\": \"Does the system include automatic product feeding?\",\r\n        \"acceptedAnswer\": {\r\n          \"@type\": \"Answer\",\r\n          \"text\": \"Yes. The system includes a Z-type bucket elevator that lifts product from ground-level hopper to the weigher platform automatically. Elevator speed is synchronized with packing speed. Operators only need to keep the ground-level hopper filled.\"\r\n        }\r\n      },\r\n      {\r\n        \"@type\": \"Question\",\r\n        \"name\": \"What is the lead time and payment terms?\",\r\n        \"acceptedAnswer\": {\r\n          \"@type\": \"Answer\",\r\n          \"text\": \"Standard lead time is 25\u201335 working days after deposit confirmation. Payment terms: 30% deposit, 70% balance before shipment (T\/T). Custom configurations may add 5\u201310 working days.\"\r\n        }\r\n      },\r\n      {\r\n        \"@type\": \"Question\",\r\n        \"name\": \"What warranty and after-sales support is included?\",\r\n        \"acceptedAnswer\": {\r\n          \"@type\": \"Answer\",\r\n          \"text\": \"2-year warranty covering manufacturing defects. Common spare parts typically ship within 3 working days. Free lifetime remote video support including weigher calibration guidance and PLC troubleshooting. On-site installation available on request.\"\r\n        }\r\n      }\r\n    ]\r\n  }\r\n]\r\n<\/script>\r\n\r\n<\/div><!-- .sw-page -->\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 \/ Collar Type Packing Machine \/ Multi-Heads Granule Weigher Packing Machine Collar Type Packing Machine Collar Type Multi-Heads Granule Weigher Packing Machine SW-420A \/ SW-620A \/ SW-820A Vertical form-fill-seal machine paired with a 10-head combination weigher for high-accuracy granule packaging \u2014 chips, nuts, candy, pet food, seeds, and hardware. Forms 3-side seal bags from [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1050,"parent":1018,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1106","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/pages\/1106","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=1106"}],"version-history":[{"count":27,"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/pages\/1106\/revisions"}],"predecessor-version":[{"id":2995,"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/pages\/1106\/revisions\/2995"}],"up":[{"embeddable":true,"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/pages\/1018"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/media\/1050"}],"wp:attachment":[{"href":"https:\/\/www.shengweimachine.com\/zh\/wp-json\/wp\/v2\/media?parent=1106"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}