Back Seal Auger Powder Vertical Packing Machine
SW-2030B · Back Seal · Auger Filler · Powder
Compact single-lane vertical form-fill-seal machine purpose-built for fine powder products in back-seal sachets. The SW-2030B pairs a servo-controlled auger screw filler with a back-seal forming tube to produce consistent-weight powder sachets at 25–50 bags per minute. Spice, coffee, flour, pharmaceutical powder, chemical additive, and cosmetic powder — any free-flowing or semi-free-flowing fine powder within the 25–140 mm bag width range. PLC touch screen control, SUS304 stainless steel contact surfaces, photoelectric film tracking, and a 220V 50/60 Hz power supply with total installed power of 1.8 kW.
Quality
CE Certified
Source
Factory Direct · Guangdong
Customization
OEM · Voltage · Language
After-Sales
2-Year Warranty · 24 h Support
SW-2030B: Single-Lane Auger Powder VFFS
The SW-2030B is a compact vertical form-fill-seal machine designed specifically for powder products in back-seal sachets. Film feeds from a rear-mounted roll, wraps around a cylindrical forming tube, and is sealed with a longitudinal back seal and horizontal cross seals — producing a standard back-seal sachet that is widely used for single-serve spice, instant coffee, flour, pharmaceutical powder, and chemical additive packaging.
The defining feature of the SW-2030B is its auger screw filling system. A servo-controlled auger rotates inside a stainless steel hopper, dispensing a precise volume of powder into each bag through the forming tube. Auger filling is the most accurate method for fine, non-free-flowing powder — it handles materials that would bridge or rat-hole in a volumetric cup system. The auger rotation count is programmable on the PLC touch screen for repeatable dose control across production runs.
The SW-2030B shares its mechanical platform with the SW-2030 series of small-sachet vertical machines. Where the SW-2030A uses a turntable cup feeder for granules, the SW-2030B replaces that with an auger screw assembly optimized for powder. The base frame, film drive, sealing system, and control electronics are identical. If your product line includes both granular and powder products, the two machines can run side by side on the same production floor with a shared control architecture. For multi-lane stick pack production at higher output volumes, the SW-B10 ten-column back-seal machine runs 10 lanes simultaneously. For powder in larger bags (up to 200 mm wide), the SW-420E/620E collar type auger powder machine offers wider bag capacity with the same auger filling principle.
Max Speed
100 bags / min
Bag Width Range
25–140 mm
Power Consumption
1.2 kW
| Parameter | SW-2030B |
|---|---|
| Bag Length | 50–200 mm |
| Bag Width | 25–140 mm |
| Max Film Width | ≤300 mm |
| Packing Speed | 25–50 bags/min |
| Filling System | Servo-Controlled Auger Screw |
| Bag Format | Back Seal Sachet |
| Control System | PLC + Servo Motor + Touch Screen |
| Sealing System | Back seal (longitudinal) + Cross seal (horizontal) with adjustable temperature |
| Contact Material | SUS304 Stainless Steel |
| Film Material | OPP/CPP · OPP/PE · PET/PE · NYLON/PE · Aluminum Foil Laminate |
| Power | 1.8 kW |
| Voltage | 220V 50/60 Hz (customizable) |
| Machine Weight | ~300 kg |
| Dimensions (L×W×H) | 1,460 × 1,250 × 1,960 mm |
Recommended Configurations by Product
Each scenario below shows a tested configuration with expected output. The SW-2030B handles a wide range of fine powder products. Contact us with your product type, target dose weight, and daily output requirement for a configuration recommendation.
Spice & Seasoning Powder
5–50 g ground spice, chili powder, curry, pepper
- Filler
- Auger screw (fine powder disc)
- Speed
- ~45 bags/min
- 8 h Output
- ≈ 21,600 bags
- Clients
- Spice processors, seasoning brands, food co-packers
Instant Coffee & Cocoa
3–15 g instant coffee, cocoa powder, matcha
- Filler
- Auger screw (medium pitch)
- Speed
- ~40 bags/min
- 8 h Output
- ≈ 19,200 bags
- Clients
- Coffee roasters, beverage brands, hotel amenity suppliers
Pharmaceutical & Chemical Powder
1–20 g medicine powder, chemical additive, desiccant
- Filler
- Auger screw (precision dosing mode)
- Speed
- ~35 bags/min
- 8 h Output
- ≈ 16,800 bags
- Add-ons
- Date coder, dust collector, nitrogen flushing
Flour & Baking Mix
25–100 g flour, starch, baking powder, milk powder
- Filler
- Auger screw (high-volume pitch)
- Speed
- ~30 bags/min
- 8 h Output
- ≈ 14,400 bags
- Clients
- Flour mills, bakery ingredient suppliers, food processors
The SW-2030B is designed for powder products in back-seal sachets up to 140 mm wide. For larger bags (up to 200 mm wide), see the SW-420E/620E collar type auger powder machine. For powder in premade stand-up pouches, see the SW-L200 premade bag powder machine. For granule products in the same sachet format, see the SW-2030A back-seal granule machine. For liquid sachets, the SW-420F collar type liquid machine is the correct choice.
Output Bag Type: Back Seal Sachet
The SW-2030B produces back-seal sachets — also called pillow-type vertical sachets or centre-back-seal bags. Film wraps around the cylindrical forming tube, a longitudinal heat seal runs down the back of the bag, and horizontal cross seals close the top and bottom. This format is the most economical for single-serve powder sachets because it uses a single web of film with minimal waste. The back seal sachet is widely accepted across food, pharmaceutical, and chemical industries worldwide.
Ground spice, coffee, flour — back seal sachet format
Matcha, chili powder — single-serve sachet packs
Back Seal Sachet (Standard Output)
3-Side Seal (Alternative — SW-1328)
Compatible film: OPP/CPP · OPP/PE · PET/PE · NYLON/PE · Aluminum Foil Laminate. Send your film sample for sealing parameter confirmation before production.
Note: The SW-2030B produces back-seal sachets only. For three-side-seal sachets, see the SW-1328 three-side seal machine. For four-side-seal sachets, see the SW-1528 four-side seal machine. For powder in premade stand-up pouches, see the SW-L200 premade bag powder machine. For vacuum-sealed food pouches, see the SW-130ZK premade bag vacuum machine.
How the Auger Powder Sachet Forming Cycle Works
The entire forming-filling-sealing cycle runs continuously. Each back-seal powder sachet is completed in under one second at full speed. The servo-driven auger and photoelectric film tracking system maintain dose accuracy and print registration throughout the production run.
01
Film Unwind & Tracking
Film unwinds from a roll mounted at the rear of the machine. A photoelectric sensor reads the registration mark on the film and adjusts pull length in real time, ensuring every bag is cut at the correct position. The film drive is servo-controlled for consistent tension across the full speed range. Maximum film width is 300 mm, supporting bag widths from 25 mm to 140 mm.
02
Forming Tube & Back Seal
Film passes over a forming collar (shoulder) that wraps it around a cylindrical forming tube. The two film edges overlap along the back of the tube, where a heated seal bar creates a continuous longitudinal back seal. The forming tube diameter determines the bag width — different tube sizes are available for different sachet dimensions. Changing the forming tube takes approximately 10 minutes.
03
Auger Powder Filling
Powder flows from the hopper into the auger screw mechanism mounted above the forming tube. A servo motor rotates the auger a programmed number of turns, dispensing a precise volume of powder through the forming tube into the open bag below. The auger pitch and rotation count are set on the touch screen for each product recipe. Fill accuracy depends on powder density consistency — a hopper agitator prevents bridging for cohesive powders.
04
Cross Seal & Cutting
Horizontal seal jaws close across the film tube below the filled powder, creating the bottom seal of the current bag and the top seal of the next bag simultaneously. A knife built into the jaw assembly cuts between the two seals to separate the finished sachet. Temperature, jaw pressure, and dwell time are all adjustable from the touch screen to suit different film types and powder weights. Finished sachets discharge onto a collection tray or downstream conveyor.
Gallery & Video
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SW-2030B close-up front view — auger hopper, forming collar, and sealing station
Four Core Systems That Define the SW-2030B
The SW-2030B is built around four purpose-designed systems that differentiate it from granule-type vertical machines and larger collar type VFFS equipment. Understanding these systems helps you evaluate whether this compact auger powder machine fits your production requirements. For powder in larger bags (up to 200 mm wide), the SW-420E/620E collar type auger powder machine from the collar type packing machine family offers wider forming tube options and higher dose capacities.
① Servo-Controlled Auger Filler
The core differentiator of the SW-2030B. A precision auger screw rotates inside a SUS304 stainless steel hopper, dispensing powder by controlled rotation count rather than gravity or volume. The servo motor provides exact start-stop positioning, eliminating the tail-off drip that causes weight variation in pneumatic auger systems. Auger pitch is selected at order time based on your powder density — fine pitch for light, aerated powder; coarse pitch for dense material like flour or cement additive.
② PLC Touch Screen Control
A colour touch screen displays packing speed, auger rotation count, sealing temperature, bag length, and fault codes on a single screen. Product parameters can be saved and recalled for fast changeover between different SKUs. The PLC coordinates auger filling, film pull, and seal jaw timing in real time. Language and unit settings are configurable at order — English, Spanish, Arabic, Russian, and other options available.
③ Compact Forming Tube Assembly
The cylindrical forming tube determines the bag width. Film wraps around the tube via a forming collar (shoulder), and the back seal bar runs along the tube's rear edge. Changing the forming tube to a different diameter — and with it the bag width — takes approximately 10 minutes. Each tube is precision-machined from SUS304 stainless steel and polished to food-grade finish. The compact assembly keeps the overall machine footprint under 1.5 m² of floor space.
④ Dual-Direction Heat Sealing
The SW-2030B uses two independent sealing systems: a longitudinal back seal bar for the continuous back seal, and horizontal cross-seal jaws for the top and bottom of each sachet. Temperature, pressure, and dwell time are independently adjustable for each sealing direction via the touch screen panel. This dual-system design allows you to optimize seal strength separately for the back seal (which must resist powder pressure during filling) and the cross seals (which must cut cleanly between bags).
Core Parts on the SW-2030B
The images below show the filling, forming, sealing, and coding parts that matter most when evaluating the SW-2030B for long-term operation, maintenance access, and changeover. Full component list including electrical brands is provided in the quotation sheet on request.
Auger Filler & Hopper
SUS304 stainless steel hopper with servo-controlled auger screw. Programmable rotation count for repeatable dose weight across spice, coffee, flour, and pharmaceutical powder.
Forming Collar & Shoulder
Precision-formed stainless steel collar guides film from the flat roll into a tube shape around the forming tube. Smooth surface finish prevents film scratching and ensures consistent wrap geometry.
Forming Tube
Precision-machined SUS304 stainless steel forming tube. Removable for cleaning and available in multiple diameters to match different bag width requirements from 25 mm to 140 mm.
Temperature Controller
PID temperature control for both back seal bar and cross seal jaws. Maintains set-point temperature within ±1 °C to ensure consistent seal quality across OPP/CPP, PET/PE, and aluminum foil laminate films.
Date Printer Mechanism
Built-in thermal ribbon date coder prints production date, batch number, and expiry date on every sachet. Position and print content are adjustable via the touch screen panel.
SW-2030B vs Collar Type Auger Machine — Which Do You Need?
Both machines use an auger screw to fill powder into heat-sealed sachets. The key difference is scale: the SW-2030B is a compact single-lane machine for small sachets; the SW-420E/620E collar type is a full-size VFFS for larger bags and higher dose weights.
Choose SW-2030B When:
- Your sachet width is 25–140 mm (small single-serve packs)
- Your dose weight is under 100 g per sachet
- You need a compact machine that fits on a 1.5 m² footprint
- You run on 220V power with total installed power of 1.8 kW
- You need a cost-effective entry-level auger powder VFFS
Choose SW-420E/620E Collar Type When:
- Your bag width exceeds 140 mm (up to 200 mm for SW-420E, 300 mm for SW-620E)
- Your dose weight exceeds 100 g (up to 1000 g for SW-420E, 1500 g for SW-620E)
- You need a higher bag length range (up to 300 mm)
- You require integrated nitrogen flushing or dust extraction
- Your production environment demands a full industrial-grade VFFS line
When This Machine Is Not the Right Fit
The SW-2030B is designed for powder products in back-seal sachets only. For granule products (sugar, rice, seeds), the same-platform SW-2030A back-seal granule machine uses a turntable cup feeder instead of an auger. For three-side-seal sachets, see the SW-1328 three-side-seal machine. For four-side-seal sachets (ketchup, shampoo, wet wipes), see the SW-1528 four-side-seal machine. For powder in premade stand-up pouches, use the SW-L200 premade bag powder machine. For granules in premade pouches, use the SW-D200 premade bag granule machine. For liquid products, the SW-420F collar type liquid machine is the correct choice. For liquid in premade pouches, use the SW-Y200 premade bag liquid machine. For multi-lane stick pack production, see the SW-B10 ten-column back-seal machine. For individual solid products in pillow pouches, see the pillow pouch packing machine family. For spout pouches, see the spout pouch filling and capping machine (SW-CCS6).
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 machine. Factory visits welcome by appointment.
Built-to-Order Configuration
Voltage (220V, 50/60 Hz), HMI language (English, Spanish, Arabic, Russian, Portuguese, and more), auger pitch, forming tube diameter, and accessories are all configurable per order. OEM branding available for distributors and private label brands.
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 and operator training 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 agricultural industries.
What Our Clients Say
We run the SW-2030B two shifts per day for our ground pepper and chili powder sachets. The auger dosing is consistent — weight variation stayed under 2% across a full 8-hour shift in our last QC check. The machine footprint is small enough that we placed two units side by side in our existing packing room without any floor modification. Changeover between our 5 g and 10 g sachet sizes takes about 15 minutes including the touch screen recipe switch. Spare parts for the seal strips arrived in 6 days when we needed replacements after about ten months of two-shift operation.
Ibrahim M.
Production Supervisor — Spice Processing Factory, Nigeria
We bought the SW-2030B to pack 3 g single-serve coffee sachets for our hotel amenity line. The machine runs at about 40 bags per minute with our coffee powder, which is steady output for our volume. The PLC is straightforward — our operator learned the controls in half a day with the remote video walkthrough from ShengWei. The built-in date coder saves us from buying a separate coding machine.
Maria L.
Operations Manager — Coffee Roasting Company, Colombia
Frequently Asked Questions
What powder products can the SW-2030B pack?
How accurate is the auger powder filling?
What is the difference between the SW-2030B and the SW-2030A?
What film materials are compatible?
What is the actual packing speed?
How do I change the bag size?
Can this machine pack granules or liquids?
What voltage and HMI language options are available?
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 vertical FFS machines work, what bag formats they produce, and how they compare to premade bag systems and horizontal flow wrap machines.
Read Guide →Auger Filler vs Volumetric Cup — Which Filling System?
When to use auger screw filling for powder versus volumetric cups for granules. Product density, flow characteristics, and accuracy compared.
Compare Fillers →Back Seal vs 3-Side Seal vs 4-Side Seal Sachet
Film usage, seal strength, shelf appearance, and machine cost compared — how to choose the right sachet format for your powder product.
Learn More →Other Powder & Back Seal Machines
Same platform with different fillers, or different machine format for powder packing.
Back Seal Granule Vertical Machine
Back seal granule vertical machine. Same platform with multi-head weigher for granule products.
Back Seal Tipping Bucket Vertical Machine
Back seal tipping bucket vertical machine. Same platform with tipping bucket for irregularly shaped items.
Collar Type Auger Powder Machine
Collar type auger powder machine. Form-fill-seal alternative with auger filling for higher-speed powder packing.
Ready to Discuss the SW-2030B?
Send us your powder type, target sachet size, and daily output requirement. We will confirm the right auger pitch and return a quotation within 24 hours.
info@shengweimachine.com · +86 181 2511 2025
