Premade Bag Packing Machine

Premade Bag Granule Packing Machine

SW-D200 · SW-D250 · SW-D320

Automated rotary filling for granule products in premade pouches — nuts, seeds, candy, coffee beans, pet food, and more. Three models share the same platform; pick by bag width only.

Request a Quote → WhatsApp Us

ShengWei SW-D series premade bag granule packing machine with multi-head weigher and 8-station rotary carousel

Quality

CE Certified

Source

Factory Direct · Guangdong

Customization

OEM · Voltage · Language

After-Sales

2-Year Warranty · Lifetime Remote Support

Product Overview

SW-D Series: 8-Station Rotary Granule Filler

The SW-D series fills pre-formed pouches with free-flowing granule products on an 8-station rotary carousel. Each station performs one step — bag loading, opening, filling, sealing, cooling, coding, detection, and discharge — all running simultaneously so throughput stays high even at large bag sizes.

A multi-head combination weigher (standard) or linear weigher (optional) measures each portion. All product-contact surfaces are SUS304 stainless steel. The PLC + HMI touch screen stores multiple product recipes and supports stand-up, flat, and zipper pouches. Switching between plain and zipper bags of the same size is done on the touch screen by turning the optional zipper-opening device on or off.

Packing Speed

16–50 bags / min

Fill Weight Range

30–5,000 g

Weighing Accuracy

±1% (±1 g below 100 g)

Parameter	SW-D200	SW-D250	SW-D320
Bag Width	80–200 mm	110–250 mm	180–320 mm
Bag Length	100–350 mm
Fill Weight Range	30–5,000 g
Weighing Accuracy	±1 g (≤100 g) / ±1% (>100 g)
Packing Speed	16–50 bags / min
Stations	8 (rotary carousel)
Bag Formats	Stand-Up / Flat / Zipper / 3-Side Seal / 4-Side Seal / Gusset / Flat-Bottom (8-Side Seal)
Filling System	Multi-head combination weigher (std) · Linear weigher (opt)
Control	Industrial PLC + HMI Touch Screen · recipe storage
Contact Material	SUS304 Stainless Steel
Power	2.3–7.5 kW · 380V/220V · 50/60 Hz (customizable)
Air	0.6–1.2 m³/min
Weight	SW-D200: ~2,300 kg (complete line); machine only ~1,600 kg
Dimensions (L×W×H)	SW-D200: 4,500 × 2,820 × 3,700 mm (complete line incl. multi-head weigher + platform); machine only: 2,300 × 1,560 × 1,460 mm

SW-D200 premade bag granule packing machine 3-view dimension drawing with measurements in mm

SW-D200 overall dimensions: 4,500 × 2,820 × 3,700 mm (L×W×H, complete line incl. multi-head weigher + platform); machine only: 2,300 × 1,560 × 1,460 mm. Exact layout drawing provided with quotation.

SW-D200 bag width range: 80–200 mm for small retail sachets and portion packs

SW-D200 · 80–200 mm — small sachets, portion packs

SW-D250 bag width range: 110–250 mm for standard retail pouches

SW-D250 · 110–250 mm — standard retail pouches

SW-D320 bag width range: 180–320 mm for bulk and family-size bags

SW-D320 · 180–320 mm — bulk, family-size

Request Full Datasheet Send via WhatsApp

Application Scenarios

Recommended Configurations by Product

Each scenario below shows an example configuration. Actual throughput varies by product characteristics and bag format — contact us for a capacity estimate based on your specific product.

Nuts & Dried Fruit

250 g stand-up pouch for retail

Model: SW-D250
Weigher: 14-head combination
Clients: Snack brands, roasted nut processors, dried fruit exporters

Coffee Beans

1 kg zipper pouch with nitrogen flush

Model: SW-D320
Weigher: 10-head combination
Add-ons: Nitrogen flushing, one-way degassing valve applicator

Pet Food Kibble

2 kg flat-bottom stand-up pouch

Model: SW-D320
Weigher: 14-head combination (large bucket)
Clients: Pet food brands, animal feed manufacturers

Candy & Gummy

100 g portion pack for vending / impulse retail

Model: SW-D200
Weigher: 10-head combination
Clients: Confectionery brands, co-packers, vending suppliers

The SW-D series is designed for free-flowing dry granules only. For fine powder, see the SW-L series. For liquids, see the SW-Y series. To see how each ShengWei machine measures a free-flowing solid, compare granule packing machines by dosing method.

Bag Formats

Supported Pouch Types & How to Choose

The SW-D series handles all common premade pouch formats. Switching between plain and zipper bags of the same size is done on the HMI by turning the optional zipper-opening device on or off. A change to a different bag size means adjusting the grippers and bag magazine; the time it takes depends on the bag format and machine setup. Because these are premade bags, the machine only forms the top seal — any preformed format that fits the grippers can run, including four-side-seal and flat-bottom (8-side-seal) pouches.

Stand-up pouch filled with dried fruit — self-standing for retail shelf display

Stand-Up Pouch — best shelf display, self-standing

Flat bottom pouch filled with mixed nuts — premium look, maximum volume

Flat-Bottom Pouch — premium look, maximum volume

3-side seal bag for biscuits — simple format, lowest material cost

3-Side Seal — simple, lowest material cost

Side gusset pouch for pet food — extra volume for bulky products

Side Gusset — extra volume for bulky products

Stand-Up Pouch

Gusset Pouch

3-Side Seal

4-Side Seal

Fin Seal

Pouch material: Pre-made pouches with their own laminated structure and heat-seal layer (laminated film, laminated paper or aluminum foil composite) — send us your bag sample or artwork for compatibility confirmation.

Machine Operation

How the 8-Station Rotary Cycle Works

All stations run simultaneously — while one pouch is being filled, others are being loaded, sealed, and discharged in parallel.

Load & Open

Suction cups pick premade pouches from the magazine onto rotary gripper clamps. A second set of suction cups separates the panels; an air jet inflates the bag fully open. Sensors skip any failed opens automatically.

Weigh & Fill

The multi-head weigher calculates the optimal bucket combination and dispenses product through a stainless steel chute into the open pouch. A vibration device prevents product bridging during transfer.

Seal & Cool

Heated jaws close the bag mouth under controlled pressure — temperature, dwell time, and pressure are adjustable per film type. Cooling plates solidify the seal to prevent deformation before release.

Code & Discharge

Optional date coder prints batch info on the finished pouch. Gripper clamps release onto the outfeed conveyor. With the optional checkweigher and reject unit, underweight bags are rejected automatically.

See It in Action

Gallery & Video

SW-D series 8-station rotary filling mechanism — close-up and wide production views

❮ ❯

8-station rotary filling carousel — all stations run simultaneously for maximum throughput

Production Line

Complete Granule Packaging Line

The SW-D series operates standalone or as part of a turnkey line. ShengWei supplies every component — from feeder to carton packer — and designs custom layouts to fit your factory floor. Send us your floor dimensions and target output for a line proposal.

SW-D premade bag rotary packing machine — 8-station filling and sealing carousel

Premade Bag Packing Machine

Core of the line — 8-station rotary carousel that loads, opens, fills, seals, and discharges pouches in a continuous cycle.

Z-Type Bucket Elevator

Transports product from floor-level storage up to the weigher hopper. Enclosed design prevents dust and spillage.

Multi-head combination weigher with 10 or 14 buckets for precise granule portioning

Multi-Head Weigher

10 or 14 buckets calculate the optimal combination for each fill cycle. Self-corrects throughout the production shift.

Elevated stainless steel work platform for operator access to weigher and feeder

Elevated Work Platform

Safe operator access to the weigher and feeder above the packing machine for maintenance and product loading.

Optional Add-Ons

All options integrate with the SW-D control system and can be managed from the main HMI panel. Available factory-installed or as field retrofits.

Date coder (inkjet or thermal ribbon)
Nitrogen flushing for modified atmosphere packaging
Checkweigher for inline weight verification
Metal detector for contaminant screening
Dust collector for dusty granule products
Extended bag magazine for longer unattended runs
Output conveyor with automatic reject gate
Linear weigher (optional)
Zipper opening device

Ask About Line Configuration

Quality Components

Branded Components You Can Verify

Every critical component on the SW-D series is sourced from established industrial brands. Part numbers are listed on the quotation sheet so you can verify pricing and availability independently before you order.

Siemens SMART 700 HMI

7-inch colour touch screen with product recipe storage. English, Spanish, Arabic, Russian available.

Siemens PLC

Programmable logic controller. Coordinates all 8 stations in real time with fault diagnostics on HMI.

AirTAC 4V210 Solenoid Valve

Controls bag-opening suction cups and sealing jaw cylinders. High cycle-life for continuous multi-shift operation.

Omron E6B2-CWZ6C incremental rotary encoder for carousel position feedback on SW-D packing machine

Omron E6B2-CWZ6C Encoder

Incremental rotary encoder for precise carousel indexing. Ensures accurate station-to-station positioning at full production speed.

SMC guided pneumatic cylinder actuating heat-sealing jaws on SW-D premade bag granule packing machine

SMC Guide Cylinder

Anti-rotation guided cylinder for sealing jaw actuation. Ensures consistent jaw alignment and seal quality across every cycle.

Schneider Easy9 thermal-magnetic circuit breaker in SW-D premade bag packing machine electrical cabinet

Schneider Easy9 Breaker

CE-compliant thermal-magnetic protection for main electrical cabinet. Overcurrent and short-circuit protection across all motor circuits.

Decision Guide

Is a Premade Bag Machine Right for You?

Premade bag machines and form-fill-seal machines both automate granule packaging. The right choice depends on your bag format needs, SKU count, and production volume.

Choose Premade Bag (SW-D) When:

You need stand-up, zipper, or flat-bottom pouches with high-quality pre-printed graphics
You run multiple SKUs and switch bag formats frequently within a shift
Your retail customers demand premium shelf presentation
Your SKU mix and changeover frequency, not a fixed daily bag count, decide the economics — the premade-versus-VFFS crossover is a model output, not a constant

Choose Form-Fill-Seal When:

You only need simple back-seal pillow bags
You run a single SKU at high volume (sustained volume at which your own TCO model shows VFFS paying back)
Per-bag material cost is the top priority over shelf appearance
You are willing to invest in forming tools for each bag size change

When This Machine Is Not the Right Fit

The SW-D series is built for free-flowing dry granules only. For fine powder (flour, spice, milk powder), the SW-L series with auger filling is the correct choice. For liquids and sauces, use the SW-Y series with pump filling. For mixed products (granule + sauce), contact us for a dual-filling configuration.

About the Manufacturer

Why Choose ShengWei Machine

Factory Direct from Guangdong

Designed and manufactured in our own 11,000 m² factory in Shantou, Guangdong. No trading companies, no middlemen — you work directly with the engineers who build your machine.

Built-to-Order Configuration

Voltage (380V/220V, 50/60 Hz), HMI language (English, Spanish, Arabic, Russian, Portuguese, and more), filling system, and accessories are all configurable per order. OEM branding available for distributors.

Lifetime Remote Support

Free remote video technical support for the life of the machine — not just the warranty period. Common spare parts typically ship from our factory within 3 working days. On-site installation available on request.

80+ Export Countries

ShengWei machines are exported to 80+ countries, including markets in Europe, Southeast Asia, Africa and the Middle East.

Factory Acceptance Test

Tested Before Shipment — How We Prove the SW-D200 Series

Two-Day Run Test on Your Bags

Every SW-D200 series machine goes through a structured Factory Acceptance Test before it ships: a test run across two working days, with speed, seal quality, weight accuracy, and rejection rate all logged. For a rotary premade-bag machine that means verifying gripper transfer and bag opening across your bag sizes (SW-D200: 80–200 mm, SW-D250: 110–250 mm, SW-D320: 180–320 mm bag widths), station-by-station seal temperature control, and stable output on your granular product across the 16–50 bags/min working range — ideally on bag samples you send us.

Approve Before We Crate

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 TÜV pre-shipment inspection and provide full access to the machine and test records. See how the 4-person QC team works at our Factory & Quality Center.

FAQ

Frequently Asked Questions

What is the lead time and payment terms?

Standard lead time is 15–30 working days after deposit confirmation. Payment: 30% deposit on order, 70% balance before shipment (T/T). Custom configurations (non-standard voltage, special HMI language, additional devices) may add 5–10 working days. Contact us with your requirements for a confirmed production schedule.

Can the voltage and HMI language be customized?

Yes. Available in 380V/50Hz (standard for most Asian and European markets) and 220V/60Hz (for North and Central American markets). The HMI touch screen supports English, Spanish, Arabic, Russian, Portuguese, French, and other languages on request. Specify both when requesting a quote so we can confirm availability and lead time.

What warranty and after-sales support is included?

2-year warranty covering manufacturing defects under normal operation and maintenance. Wear parts (sealing strips, suction cups, heating elements) are excluded. Common spare parts typically ship from our Guangdong factory within 3 working days. Remote video technical support is free for the lifetime of the machine. On-site installation and operator training are available on request (travel costs quoted separately).

Do you provide installation and operator training?

Every machine ships with a detailed installation manual, wiring diagram, and remote video guidance — most customers self-install successfully with remote support. For on-site installation, a ShengWei engineer can travel to your factory (travel and accommodation costs quoted separately, typically 7–10 days on-site). Training covers machine operation, recipe setup, basic maintenance, and troubleshooting.

Can I send a product sample for a packing test?

Yes. Ship 2–5 kg of your product plus a sample pouch to our Shantou factory. We will run a packing test on the actual machine, record a video of the results, and share the footage along with recommended machine settings. This is the most reliable way to confirm the machine suits your product before committing to an order. Contact us for the shipping address.

How do I choose between the SW-D200, SW-D250, and SW-D320?

The models differ by bag width range: SW-D200 80–200 mm, SW-D250 110–250 mm, and SW-D320 180–320 mm. All three share the same 8-station platform, control system, and filling options. Pick the model whose width range covers every pouch you plan to run, from the narrowest to the widest. If you are unsure, send us your bag dimensions and we will recommend the right model.

What is the machine's footprint and factory requirements?

For the SW-D200, the complete line (packing machine + weigher + platform) occupies approximately 4,500 × 2,820 mm with a height of 3,700 mm; the machine alone measures 2,300 × 1,560 × 1,460 mm. You will need a compressed air supply of 0.6–1.2 m³/min and a 380V or 220V power connection (configurable). The factory floor should be level and able to support approximately 2,300 kg for the complete line (machine only ~1,600 kg). A detailed layout drawing is included with every quotation.

How often do wear parts need replacing?

Sealing strips typically last 3–6 months under two-shift operation, suction cups 6–12 months, and heating elements 12–18 months depending on film type and sealing temperature. We recommend keeping one set of spare wear parts on hand. All wear parts are standard components — replacements typically ship within 3 working days from our Guangdong factory.

Can the SW-D series handle recyclable or paper-based film?

Yes. The sealing temperature, dwell time, and jaw pressure are all adjustable via the HMI panel, so the machine can be tuned for mono-material PE/PP recyclable films and paper-based laminates. We recommend sending a sample pouch for a sealing test before full production to confirm the optimal parameters for your specific material.

What shipping options are available?

We ship via sea freight (FCL or LCL) to any international port, with FOB Shantou as the standard trade term. The machine is crated in a fumigation-free plywood case suitable for customs clearance. Air freight and door-to-door delivery via logistics partners are available on request. We can also work with your nominated freight forwarder. Typical sea freight transit to Southeast Asia is 7–14 days, to the Middle East 18–25 days, and to Latin America 30–40 days.

Resources

Expert Guides

Seal Strength vs Seal Integrity

Why a strong-looking seal can still leak, which test finds what — and what granules trapped in the seal area do to leak rates.

Read the Sealing Guide →

How to Choose the Right Filling System

Multi-head weigher vs auger filler vs volumetric cup — the accuracy mechanism, give-away cost, and cleaning compared.

Compare Dosing Methods →

Premade Bags or Form-Fill-Seal?

Bag quality, changeover, film cost, and total cost of ownership — when a rotary premade-bag machine beats VFFS, and when it doesn't.

Read the Comparison →

USA Case Study: Repeat Order of an SW-D200 Candy Pouch Machine and a Small Powder Sachet Machine

A US e-commerce brand placed a second order with us: an SW-D200 premade pouch machine with a weigher and a Z elevator for candy, plus a small vertical machine for 3–60 g powder sachets, both built for 60 Hz. The cases were opened on 22 September 2026 and the small machine was connected on 3 October 2026.

Read the case study →