Back Seal Tipping Bucket Vertical Packing Machine
SW-2030C · Back Seal · Bucket Conveyor Feeding · Low-Stick Granules
Compact single-lane vertical form-fill-seal machine for low-stick powder and granule materials such as chips, oatmeal, glutamate, melon seeds, sugar, salt, freshness preservers, and similar free-flowing products. The SW-2030C combines bucket conveyor feeding, volumetric cup or tipping bucket dosing, a back-seal forming tube, frequency-converter control, electronic photo-eye tracking, and optional date printing to produce back-seal sachets at 20-50 bags per minute. It keeps the same compact SW-2030 vertical platform while adding a contained feeding system for small food granules that need controlled transfer and cleaner drop timing.
Quality
CE Certified
Source
Factory Direct · Guangdong
Customization
OEM · Voltage · Language
After-Sales
2-Year Warranty · 24 h Support
SW-2030C: Bucket Conveyor Back-Seal VFFS for Low-Stick Granules
The SW-2030C is the tipping bucket version of the compact SW-2030 back-seal vertical packing platform. Rollstock film feeds from the rear of the machine, wraps around a forming tube, receives a longitudinal back seal, and is cross-sealed into small sachets. Above the forming tube, a chain bucket conveyor lifts product from the lower feeding point to the dosing position. A volumetric cup or bucket then drops the measured product into the open bag mouth with a short drop path. This layout is useful when the product is a small solid or granule that should not be crushed, rubbed, or forced through an auger screw.
The machine is specified for 50-200 mm bag length, 25-140 mm bag width, film width up to 300 mm, and 20-50 bags per minute. Standard power is 1.8 kW, with 220V/380V project voltage confirmed before production, an approximate machine weight of 300 kg, and a compact body size of L1260 x W930 x H1700 mm. These specifications make it practical for factories that need automatic sachet packing but do not have the floor area or production volume for a full collar type VFFS line.
The SW-2030C sits between two related ShengWei machines. If your product is a regular free-flowing granule that can be metered by cups, the SW-2030A back seal granule machine is the closest alternative. If your product is sticky, dusty, or needs screw-metered powder dosing, the SW-2030B auger powder machine uses the same base frame but replaces the bucket feeding system with a servo-controlled auger. For high-volume multi-lane stick packs, the SW-B10 ten-column back-seal vertical machine runs 10 lanes at once.
Max Speed
50 bags / min
Bag Width Range
25-140 mm
Power Consumption
1.8 kW
| Parameter | SW-2030C |
|---|---|
| Bag Length | 50-200 mm |
| Bag Width | 25-140 mm |
| Max Film Width | ≤300 mm |
| Packing Speed | 20-50 bags/min |
| Filling System | Chain Bucket Conveyor + Tipping Bucket & Turntable Dual Discharge |
| Bag Format | Back Seal Sachet |
| Control System | Touch Screen + Frequency Converter + Photoelectric Tracking |
| Sealing System | Back seal (longitudinal) + cross seal (horizontal) with adjustable temperature |
| Contact Material | SUS304 stainless steel contact parts |
| Film Material | OPP/CPP · OPP/PE · PET/PE · NYLON/PE · Aluminum foil laminate |
| Power | 1.8 kW |
| Voltage | 220V/380V, 50/60 Hz (confirm before production) |
| Machine Weight | Approx. 300 kg |
| Dimensions (L x W x H) | 1260 x 930 x 1700 mm |
Recommended Configurations by Product
The SW-2030C is best suited for small pieces and granules that move cleanly through a bucket conveyor. Send us the product photo, piece size, target fill weight, film sample, and target daily output so we can confirm bucket volume, conveyor speed, sealing dwell time, and discharge height before quotation.
Desiccant & Freshness Preserver Packs
Freshness preservers, desiccant granules, oxygen absorber material
- Filler
- Bucket conveyor with volumetric cup or tipping bucket dosing
- Speed
- 20-50 bags/min depending on fill weight and bag length
- 8 h Output
- Approx. 9,600-24,000 bags
- Clients
- Food preservative factories, additive suppliers, small-sachet packers
Chips, Oatmeal & Snack Granules
Chips, oatmeal, puffed snacks, small dry food pieces
- Filler
- Contained bucket feed for low-stick food pieces
- Speed
- 20-50 bags/min depending on product size
- 8 h Output
- Approx. 9,600-24,000 bags
- Add-ons
- Optional date printer and finished-bag conveyor
Sugar, Salt & Glutamate
Sugar, salt, MSG/glutamate, seasoning granules
- Filler
- Volumetric cup or tipping bucket dosing after sample confirmation
- Speed
- 20-50 bags/min depending on flow behavior
- 8 h Output
- Approx. 9,600-24,000 bags
- Clients
- Seasoning factories, food ingredient packers, small sachet suppliers
Melon Seeds & Free-Flowing Seeds
Melon seeds, small seeds, granular blends, dry food granules
- Filler
- Bucket volume matched to product bulk density
- Speed
- 20-50 bags/min for stable-flow granules
- 8 h Output
- Approx. 9,600-24,000 bags
- Notes
- Sample testing recommended for fragile or mixed-size pieces
The SW-2030C is designed for small low-stick powder and granule products in back-seal sachets up to 140 mm wide. If the sample is sticky powder, dusty powder requiring auger accuracy, liquid, paste, oversized granules, a large fill-weight project, or a premade pouch requirement, confirm the filling method and pouch structure first so the machine platform is selected correctly.
Output Bag Type: Back Seal Sachet
The SW-2030C produces back-seal sachets, also called center-back-seal bags or vertical pillow sachets. A single roll of heat-sealable film wraps around the forming tube, the rear overlap is sealed by the longitudinal back seal, and the top and bottom are closed by horizontal cross seals. For small granules and desiccant packs, this bag style keeps film cost low, runs efficiently on a compact VFFS frame, and gives enough panel area for date code, logo, product name, or warning text.
Chips, snacks, seeds, and low-stick granules in back-seal sachets
Melon seeds, oatmeal, sugar, salt, glutamate, and similar free-flowing solids
Back Seal Sachet (Standard Output)
Compatible film: OPP/CPP · OPP/PE · PET/PE · NYLON/PE · aluminum foil laminate. Send your rollstock film sample before production so we can confirm sealing temperature, dwell time, and cutting quality.
Bag-format check: the SW-2030C is a back-seal vertical form-fill-seal machine. It is suitable when your rollstock film can form a center-back-seal sachet within the 25-140 mm bag-width range. It is not the right platform for three-side-seal sachets, four-side-seal sachets, premade stand-up pouches, zipper pouches, or spouted pouches. Confirm the required pouch structure before quotation so the machine platform, forming tube, and sealing layout are selected correctly.
How the Tipping Bucket Back-Seal Cycle Works
The SW-2030C forms and seals bags continuously while the chain bucket system meters product above the forming tube. The timing of bucket discharge, film pull, vertical back seal, horizontal seal, and cutting is coordinated by the control system. This makes the machine suitable for low-stick powder and granule products that need stable transfer without auger compression.
01
Product Feeding
Small granules or pieces are loaded into the feeding hopper or turntable feeder. The bucket conveyor lifts product to the upper dosing position at a controlled speed. Cup or bucket size and feed timing are selected based on the target fill weight and product flow behavior.
02
Film Forming & Back Seal
Rollstock film unwinds from the rear roll holder and passes over the forming collar. The film wraps around the forming tube, and the overlapping rear seam is sealed by the vertical back-seal bar. Photoelectric tracking reads the printed mark and corrects film pull length.
03
Tipping Bucket Drop
When the open bag reaches the filling position, the bucket tips and releases product through the filling chute. The drop is short and clean, which helps handle chips, oatmeal, melon seeds, sugar, salt, glutamate, and desiccant granules with less abrasion or spillage.
04
Cross Seal & Cutting
Horizontal seal jaws close across the film tube, forming the top seal of the filled sachet and the bottom seal of the next sachet. A built-in knife separates the finished bag. Temperature, jaw pressure, seal time, and bag length are adjusted from the touch screen.
Gallery & Video
Review the SW-2030C machine photos first, then watch the running demo to confirm the chain bucket feeding, film forming, back-seal, cross-seal, and discharge sequence before requesting a quotation.
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SW-2030C front view - compact VFFS body with chain bucket feeding and back-seal forming area
Four Core Systems That Define the SW-2030C
The SW-2030C is not simply the powder model with a different hopper. Its value comes from the combination of bucket feeding, compact back-seal forming, synchronized sealing, and accessible control. These four systems determine whether the machine fits your product shape, bag size, and output expectation.
1. Chain Bucket Conveyor
The conveyor lifts low-stick food granules and small dry pieces in individual buckets instead of pushing them through a screw or vibrating them across a long tray. This is useful for desiccant granules, chips, oatmeal, melon seeds, sugar, salt, and glutamate because the product is transported in contained pockets with less rubbing and less product loss.
2. Volumetric Cup or Tipping Bucket Dosing
The cup or bucket drops product at the filling position and releases it directly into the open bag. Bucket size can be matched to the required fill weight or piece count. For products with variable density, we recommend a sample test so our engineers can choose bucket volume and confirm realistic accuracy before production.
3. Compact Back-Seal Forming Tube
Film wraps around a polished SUS304 forming tube to create the back-seal sachet. The tube and collar are selected for your target bag width from 25 mm to 140 mm. Bag length is adjusted on the touch screen, so common size changes are faster than mechanical rebuilds.
4. Touch Screen and Photo-Eye Tracking
The control system coordinates bucket discharge, film pull, electronic photo-eye tracking, longitudinal back sealing, cross sealing, cutting, and optional date printing. Operators can adjust speed, set seal temperature, and diagnose alarms from the touch screen. HMI language and voltage can be configured for the destination market.
Core Parts on the SW-2030C
The images below show the feeding, forming, sealing, and coding parts that matter most when evaluating the SW-2030C for long-term operation, maintenance access, and changeover. Full component list including electrical brands is provided in the quotation sheet on request.
Chain Bucket Conveyor
Gentle product transfer for small solids. Bucket movement is synchronized with the packing cycle to reduce spillage and protect fragile pieces.
Turntable Feeder
Optional upstream feeding table for stable product supply. Useful when operators load small pieces manually or when multiple products are prepared near the machine.
Measuring Cup Reference
Bucket and cup dimensions are matched to the target fill weight. Product bulk density and piece size should be confirmed by sample test before final selection.
Forming Tube & Collar
Polished stainless forming parts guide the film into a stable back-seal tube. Additional tubes can be supplied for different bag widths.
Temperature Controller
Independent heat control for seal stability across OPP/CPP, PET/PE, NYLON/PE, and aluminum foil laminate films.
Date Printer Mechanism
Thermal ribbon coding for production date, batch number, and expiry date. Position and content are confirmed during machine setup.
SW-2030C vs SW-2030A and SW-2030B - Which Do You Need?
The three SW-2030 models share a compact back-seal VFFS body, but the feeding system is different. Choosing the correct one depends on product shape, flow behavior, fill weight, and the way the product should enter the bag.
Choose SW-2030C When:
- Your product is chips, oatmeal, glutamate, melon seeds, sugar, salt, desiccant, or a similar low-stick granule
- You need bucket conveyor feeding with volumetric cup or tipping bucket dosing
- Your finished bag width is 25-140 mm and length is 50-200 mm
- You need a compact 1.8 kW small-sachet machine, with voltage confirmed for your factory
- Your expected running speed is within the 20-50 bags/min project range
Choose SW-2030A or SW-2030B When:
- Use SW-2030A for free-flowing granules that can be metered by turntable cups
- Use SW-2030B for fine powder, spice, coffee, flour, or chemical powder
- Use SW-B10 when you need multi-lane stick packs at much higher output
- Use collar type machines when bag width, bag length, or fill weight exceeds the compact SW-2030 range
- Use premade bag machines when your required pouch is stand-up, zipper, or shaped pouch
When This Machine Is Not the Right Fit
The SW-2030C is designed for small solids and granules in back-seal sachets. It is not the right fit if the product is sticky powder, liquid or paste, too large for the 25-140 mm bag-width range, or too heavy for a compact 1.8 kW small-sachet platform. It is also not the right fit when the required package is a premade stand-up pouch, zipper pouch, spouted pouch, three-side-seal sachet, or four-side-seal sachet. In those cases, choose the machine platform from the required pouch structure and filling method first.
Why Choose ShengWei Machine
Factory Direct from Guangdong
Designed and manufactured in our own factory in Shantou, Guangdong. You work directly with the engineers who build and test the machine, not a trading company that only forwards questions.
Configuration Based on Samples
Bucket size, feed speed, forming tube, coding option, film material, HMI language, and voltage can be confirmed before production. For unusual product shapes, we recommend a sample test.
Remote Support for Operators
We provide remote video guidance for installation, touch screen parameter setup, film threading, forming tube changeover, sealing adjustment, and daily maintenance.
Export Packaging Experience
ShengWei machines are used by food, pharmaceutical, chemical, agricultural, and daily-use product factories across Asia, the Middle East, Africa, Latin America, and Europe.
What Our Clients Say
We needed a compact machine for small preservative packs used inside snack cartons. The bucket feeding was the key reason we chose the SW-2030C. The product does not bridge like it did in our old hopper, and bag length adjustment is simple on the touch screen. ShengWei tested our sample film before shipment and gave us the starting temperature settings, which saved a lot of time during installation.
Daniel K.
Production Manager - Food Additive Supplier, Malaysia
Our workshop packs small snack granules and seasoning sachets in several bag sizes. The SW-2030C is small enough to sit near our manual packing line, but it gives us automatic film forming, sealing, cutting, and date coding. Changeover between products takes less time than we expected because the operator can adjust settings from the touch screen.
Sofia R.
Operations Lead - Confectionery Co-Packer, Mexico
Frequently Asked Questions
What products can the SW-2030C pack?
How accurate is the tipping bucket filling?
What is the difference between SW-2030C and SW-2030A?
What is the difference between SW-2030C and SW-2030B?
What film materials are compatible?
What bag sizes can this machine make?
What is the actual packing speed?
Can I add a date printer or finished bag conveyor?
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 unwind film, form a tube, fill product, seal the bag, and cut finished sachets from a continuous roll.
Read Guide →Bucket Feeding vs Cup Feeding
Use bucket feeding for small solids that benefit from contained lifting. Use cup feeding for regular free-flowing granules with stable bulk density.
Compare Feeders →Back Seal vs 3-Side Seal Sachet
Back seal bags reduce film cost and run quickly on compact machines. Three-side seal bags are selected when shelf appearance or flat sachet format matters more.
Learn More →Other Granule & Filling Machines
Different filling systems for irregularly shaped and granule products.
Back Seal Granule Vertical Machine
Back seal granule vertical machine. Same platform with volumetric cup or weigher for regular granule products.
Pendular Small Granule Vertical Machine
Pendular small granule vertical machine. Swing-arm dosing for small candy and snack items.
Collar Type Multi-Head Weigher Machine
Collar type multi-head weigher granule machine. Higher accuracy weighing system for premium granule products.
Ready to Discuss the SW-2030C?
Send us your product photo, target fill weight, bag size, film sample, and daily output requirement. We will confirm whether the SW-2030C bucket feeding system is the right configuration and return a quotation within 24 hours.
info@shengweimachine.com · +86 181 2511 2025
