Three Sides Sealing Vertical Packing Machine
SW-1328 · Measuring Cup Dosing · 3-Side Seal Sachets · 50–70 bags/min
Compact vertical form-fill-seal machine for low-viscosity granules, nuts, chips, melon seeds, sugar, and salt. The SW-1328 uses a 4-cup rotating measuring disc for stable volumetric dosing of 10–200 g fill weights into three-side seal sachets up to 140 mm wide and 200 mm long. Siemens PLC touch-screen control, Schneider frequency converter, photocell registration, and optional date coding are standard — at 300 kg and 1.8 kW, the machine fits small workshops and mid-size food plants alike.
Quality
CE Certified
Source
Factory Direct · Guangdong
Customization
OEM · Voltage · Language
After-Sales
2-Year Warranty · 24 h Support
SW-1328: Three-Side Seal Sachets with Measuring Cup Precision
The SW-1328 is a single-lane vertical form-fill-seal machine built around a rotating measuring cup disc. Four volumetric cups (standard) — or five for higher throughput — swing around a fixed cup ring that feeds each pre-measured dose into the forming tube below. The three-side seal mold closes the longitudinal seam and both end seals in a single stroke, producing flat, retail-ready sachets 25–140 mm wide and 50–200 mm long at 50–70 bags per minute. Typical fill weights range from 10 g to 200 g; larger doses require custom cup sets.
The SW-1328 suits low-viscosity free-flowing materials — nuts, cashews, chips, melon seeds, sugar, salt, dry beans, seasoning granules, coffee beans, and similar products that can gravity-feed into cups without bridging. For fine powders that require auger metering, use the SW-2030B auger powder machine. For small candy, seeds, or oscillating-dose products in the 5–500 g range, see the SW-2030D pendulum machine. For products already packed in premade bags or stand-up pouches, see the premade bag packing machine family instead.
Control is handled by a Siemens touch-screen HMI with a multi-language interface (Chinese, English, Spanish, Arabic, Russian, Korean, French; other languages on request via PLC customization). A Schneider ATV12 frequency converter regulates main motor speed for smooth start-up and SKU transitions, and an intelligent photocell tracking system registers each bag to the print mark on the film. Optional add-ons include a ribbon coding printer for production and expiry dates (2 lines, ~14 characters per line), and a finished-product conveyor to feed downstream cartoners or operators.
Max Speed
70 bags / min
Fill Weight Range
10–200 g
Machine Weight
300 kg
| Parameter | SW-1328 |
|---|---|
| Bag Length | 50–200 mm |
| Bag Width | 25–140 mm |
| Max Film Roll Width | ≤ 300 mm |
| Fill Weight | 10–200 g (larger with custom cups) |
| Packing Speed | 50–70 bags/min (up to 70–80 with standard materials) |
| Filling System | Rotating measuring cup disc · 4 cups standard / 5 optional |
| Standard Cup Size | Ø 100 mm × 25 mm depth (custom sizes available) |
| Bag Format | Three-Side Seal Sachet |
| Control System | Siemens Touch-Screen HMI + Frequency Converter |
| Frequency Converter | Schneider ATV12 |
| Tracking System | Electronic photocell registration |
| Date Coding | Ribbon coding printer (optional) · 2 lines · ~14 characters/line |
| Top-Seal Options | Euro hole / round hole punching (top-seal area ≥ 25 mm required) |
| HMI Language | Chinese / English / Spanish / Arabic / Russian / Korean / French (others on request) |
| Contact Material | SUS304 stainless steel, food grade |
| Film Material | OPP/CPP · OPP/PE · PET/PE · PA/PE · Aluminum laminate |
| Power | 1.8 kW |
| Voltage | 220V 50/60 Hz (confirm before production) |
| Machine Weight | ~ 300 kg |
| Dimensions (L × W × H) | 1,260 × 930 × 1,700 mm |
Recommended Configurations by Product
The SW-1328 is tuned for low-viscosity free-flowing products that gravity-feed cleanly into the measuring cup disc. Each scenario below is a tested configuration — contact us with your product sample and target fill weight for a confirmed cup-set recommendation.
Nuts & Dried Fruit
50 g retail snack sachet
- Cup Set
- 4 cups standard
- Speed
- ~60 bags/min
- 8 h Output
- ≈ 28,800 bags
- Film
- PET/PE laminate with pre-print
- Clients
- Snack exporters, nut roasters, private-label co-packers
Melon Seeds & Chips
30–80 g impulse-buy sachet
- Cup Set
- 5 cups (high-speed option)
- Speed
- ~75 bags/min
- 8 h Output
- ≈ 36,000 bags
- Film
- OPP/CPP with gloss finish
- Clients
- Snack brands, convenience-store OEMs, kiosk suppliers
Sugar, Salt & Seasoning Granules
10–20 g HORECA portion sachet
- Cup Set
- 4 cups with small-volume insert
- Speed
- ~70 bags/min
- 8 h Output
- ≈ 33,600 bags
- Add-ons
- Euro hole punch for display racks
- Clients
- HORECA suppliers, sugar refiners, seasoning processors
Dry Beans & Coffee Beans
100–200 g portion pack
- Cup Set
- Custom oversized cups (contact us)
- Speed
- ~50 bags/min
- 8 h Output
- ≈ 24,000 bags
- Add-ons
- Ribbon date printer, conveyor belt
- Clients
- Coffee roasters, grain processors, export packers
Not the right fit? For fine or sticky powders, use the SW-2030B auger powder machine. For high-speed multi-lane granule packing on wider film, see the SW-A6 six-column three-side seal machine. For irregular nuts that need combination weighing, see the SW-420A collar-type multi-head weigher machine.
Output Bag Type: Three-Side Seal Sachet
The SW-1328 produces one primary bag format — the three-side seal sachet. Film folds to form the longitudinal seam at one edge; the top and bottom end seals close the remaining two sides. The result is a flat, lightweight pouch ideal for retail display, vending distribution, and low-cost portion packs. Top-seal areas of 25 mm or more can be punched with Euro holes or round hang holes for display racks.
Three-side seal sachets — powders, granules, snacks
Applicable products — snacks, nuts, seasonings
3-Side Seal Pouch (Standard Output)
Back Seal Pouch (alternative format)
Compatible film: OPP/CPP · OPP/PE · PET/PE · PA/PE · aluminum-foil laminate. Send us a film sample before production so we can confirm the sealing temperature and cup-ring clearance for your specific material.
Note: The SW-1328 does not produce four-side seal, stand-up, or zipper bags. For four-side seal sachets with an upper/lower film feed, see the SW-C6 six-column four-side seal machine.
How the Measuring-Cup VFFS Cycle Works
From film unwind to finished sachet the cycle runs under one second at full speed. The cup disc rotates continuously while the film-pull and sealing station operate in precise phase — no stop-and-start motion on the dosing head.
01
Bulk Feed & Cup Charging
Product is loaded into the stainless-steel hopper above the cup disc. As the disc rotates, each cup passes under the hopper exit and gravity-fills with the same volumetric charge. An adjustable cup ring controls fill level — tightening the ring reduces dose volume, loosening it increases dose volume, without changing cups. A vibration setting on the HMI helps stubborn granules settle evenly into the cups.
02
Film Forming & Longitudinal Seal
Film unwinds from the rear roll, passes through a double film clamp for tension stability, and is pulled over a forming collar that folds it into a vertical tube. The longitudinal seal bar clamps the overlapping edges against the forming tube and applies heat to form the long-side seal. A servo-driven pull assembly registers each bag to the print mark on the film.
03
Dose Drop & End Sealing
As each cup reaches the dispensing position, its bottom flap opens and the dose drops down the forming tube into the waiting bag. The horizontal end-seal jaws close across the film tube, sealing the top of the current bag and the bottom of the next bag in a single stroke. An integrated knife inside the jaw set separates the finished sachet from the ongoing film tube.
04
Date Coding & Discharge
An optional ribbon coding printer prints the production date, batch number, and expiry date on each sachet — up to 2 lines of roughly 14 characters per line, with customizable fonts. Finished sachets fall onto a finished-product conveyor that carries them clear of the machine and into a downstream cartoner or hand-pack station. The intelligent photocell tracking system halts the cycle if the print mark is missed or the film drifts.
Gallery & Video
❮
❯
SW-1328 full-machine front view — hopper, cup disc, forming tube, and sealing station
Five Features Working Together
The SW-1328 machine detail sheet calls out five mechanical and control features that determine output quality and uptime. Understanding each feature helps you specify the right configuration for your product.
① PLC & Touch-Screen Control
A Siemens touch-screen HMI displays packing speed, fill weight, cutting angle, sealing temperature, and fault codes on one panel. Stored recipes recall all parameters in seconds; language and measurement units are configurable at time of order.
② Ribbon Coding Printer (Optional)
Factory-fitted ribbon printer prints production date, batch number, and expiry date directly on the sealed top of each sachet — typically 2 lines of ~14 characters with customizable fonts. No aftermarket bracket required.
③ Bag Former & Forming Tube
A custom-fabricated forming collar and forming tube set matched to your target bag width. Forming tubes can be interchanged for different bag sizes without machine rebuild — contact us with your full SKU range for a multi-tube quotation. The same measuring-cup dosing principle is also available on the SW-320D/420D collar-type measuring cup machine if you need pillow-bag or back-seal output instead of three-side seal.
④ Roll Film Structure & Double Film Clamp
The rear film roll sits on a dedicated unwind shaft behind the machine. A double film clamp system holds film tension between the roll and the forming tube, eliminating slack and wrinkles even when the film runs out or the roll diameter changes mid-shift.
⑤ Seal Mold Customization
The three-side seal mold is standard. Top-seal patterns can be customized — serrated, smooth, or embossed with a brand mark — and Euro or round hang holes can be punched on top seals of 25 mm or more for retail display racks.
Branded Components You Can Verify
Every critical component on the SW-1328 is sourced from established industrial brands. Part numbers appear on the quotation sheet so you can verify pricing and availability independently before you order.
Siemens SMART 700 PLC
Industrial PLC + HMI platform coordinating film pull, cup rotation, sealing jaws, and date coder in real time. Fault codes display on the touch screen for fast diagnosis.
Multi-Language Touch HMI
7-inch colour touch screen with built-in Chinese, English, Spanish, Arabic, Russian, Korean, and French interfaces. Additional languages are supported via PLC customization on request.
Schneider Frequency Converter
Schneider ATV12 drive regulates main motor speed for smooth acceleration and deceleration. Eliminates film shock during SKU changes and protects sealing strips from temperature overshoot.
4-Cup Measuring Disc
Rotating disc with 4 volumetric cups (5 optional) feeds pre-measured doses into the forming tube. Cup ring adjusts fill level on the fly; custom cup sizes available for 10–200 g or higher fills.
Double Film Clamp System
Dual-roller clamp holds film tension between the rear roll and the forming tube, eliminating wrinkling at the sealing station. Easy film-threading design reduces roll-change downtime.
Ribbon Coding Printer (Optional)
Factory-fitted ribbon printer prints production date, batch number, and expiry date — typically 2 lines of up to 14 characters, with customizable font. No aftermarket bracket required.
Measuring Cup vs Auger vs Multi-Head Weigher — Which Dosing Method Do You Need?
Three different vertical packing machines can all fill a three-side seal sachet, but they use different dosing technologies. The right choice depends on your material's flow behaviour, fill-weight tolerance, and production volume.
Choose the SW-1328 Measuring Cup Machine When:
- Your product is free-flowing and uniform in particle size — nuts, chips, melon seeds, sugar, salt, beans
- Fill weight is between 10 g and 200 g and tolerance of ±1–2 g is acceptable
- You want the lowest capital cost for a dedicated three-side seal line
- You produce 50–70 sachets per minute and need a compact 300 kg footprint
- You need HMI in Chinese, English, Spanish, Arabic, Russian, Korean, or French
Choose the SW-2030B Auger Powder Machine or the SW-420A Multi-Head Weigher When:
- Your material is fine powder that bridges or arches in cups — auger metering is needed
- Your granules are irregular (pretzel pieces, dried fruit) and need combination weighing for ±0.3 g accuracy
- You need high-speed output above 70 bags/min on one lane
- Your product requires back-seal (pillow-style) sachets instead of three-side seal
When This Machine Is Not the Right Fit
The SW-1328 is a single-lane three-side seal machine for low-viscosity free-flowing materials. If you need four-side seal sachets, use the SW-C6 six-column four-side seal machine. If you need multi-lane high-speed output on three-side seal, use the SW-A6 six-column three-side seal machine. For triangle-format sachets, see the SW-1022 triangle bag machine. For ten-lane back-seal coffee sticks, see the SW-B10 ten-column back-seal machine. For products already packed in premade pouches or zipper bags, see the premade bag packing machine family — including the SW-D200 granule model and the SW-L200 powder model.
Why Choose ShengWei Machine
Factory Direct from Guangdong
Designed and manufactured in our own 8,000 m² factory in Shantou, Guangdong. No trading companies, no middlemen — you work directly with the engineers who build your SW-1328.
Built-to-Order Configuration
Voltage (220V 50/60 Hz, 380V on request), HMI language, cup count (4 or 5), cup size, date printer, conveyor belt, Euro/round hole punch, and OEM branding are all configurable per order.
Lifetime Remote Support
Free remote video technical support for the life of the machine — not just the warranty period. Spare parts ship from our factory within 3 working days. On-site installation available on request.
40+ Export Countries
ShengWei machines are deployed in the UAE, Saudi Arabia, Nigeria, Mexico, Colombia, Indonesia, the Philippines, and 30+ additional markets across food, pharmaceutical, chemical, and hardware industries. In addition to vertical sachet machines, we also manufacture pillow pouch packing machines for flow-wrap applications.
What Our Clients Say
We run the SW-1328 for salted melon-seed sachets at around 65 bags per minute. The 5-cup upgrade was worth the small price difference — our throughput went up without losing weight accuracy. The Schneider drive handles start-up smoothly, so we stopped seeing film wrinkles in the first ten bags of every shift. Spare parts arrived in four days when we needed replacement sealing strips.
Ahmed K.
Production Manager — Snack Exporter, UAE
Our line packs sugar and salt sachets for hotels and cafés. The cup-ring adjustment lets our operators tune fill weight by hand without changing cups — very useful when we switch from 10 g sugar to 5 g salt on the same shift. The HMI is in Spanish and Arabic so both of our shifts can operate it without translation. Eighteen months of two-shift running and no major breakdowns yet.
Lourdes V.
Plant Director — HORECA Portion-Pack Supplier, Mexico
Frequently Asked Questions
What products can the SW-1328 pack?
What bag types does this machine produce?
How many cups are standard, and can I upgrade?
What film materials are compatible?
Can the SW-1328 print date codes on sachets?
What is the packing speed and what affects throughput?
What languages does the touch-screen HMI support?
What warranty and after-sales support is included?
What is the lead time and payment terms?
Can I send a product sample for a packing test?
Expert Guides
What Is a Vertical Form-Fill-Seal Machine?
How VFFS machines form sachets from rollstock film, the three dosing methods (cup, auger, weigher), and how to choose the right one for your material.
Read Guide →Measuring Cup vs Auger vs Weigher
Fill-weight accuracy, material compatibility, capital cost, and throughput compared across the three most common VFFS dosing systems.
Compare Dosing →Three-Side Seal vs Back Seal vs Four-Side Seal
Sachet appearance, film cost, retail display, and barrier integrity compared — how to pick the right seal format for your product.
Compare Seal Formats →Other Single-Lane Vertical Machines
Different seal formats and machine types for versatile product packaging.
Triangle Bag Packing Machine
Triangle bag packing machine for candy and snacks. Unique pyramid bag format for specialty products.
Four-Side Seal Vertical Machine
Four-side seal vertical machine. Same platform size with four-side seal for different product presentation.
Collar Type Measure Cup Machine
Collar type measure cup machine for granules. Form-fill-seal alternative with volumetric dosing system.
Ready to Discuss the SW-1328?
Send us your product sample, target fill weight, and bag dimensions. We will confirm the cup set and return a quotation within 24 hours.
[email protected] · +86 181 2511 2025
