Medium Bag Pillow & Gusset VFFS Packaging Machine
Engineered for high-speed, high-precision automatic metering and packaging of liquids, powders, and granules. It delivers stable output across a wide bag-width range of 50–600 mm with multi-axis servo and PLC control, ensuring consistent seal quality and minimal film waste. Ideal for food, pharmaceutical, and chemical production lines requiring flexible, fully automated vertical form-fill-seal packaging.
Product Overview
The Keypack Intelligent (kunbupack) Vertical Form-Fill-Seal Machine is a fully automatic back-seal vertical packaging machine designed to handle a broad spectrum of materials — from free-flowing granules and fine powders to viscous liquids and irregularly shaped solids. Compatible with pillow bags and gusset bags, this VFFS machine integrates metering, film forming, filling, sealing, date printing, gas flushing/vacuum, and finished-product conveying into a single continuous process. The system supports film widths from 320 mm to 1,250 mm and bag sizes from 50×60 mm up to 600×800 mm, making it one of the most versatile vertical packaging machines available for mid-to-large format applications.
Powered by a PLC servo system combined with a pneumatic control system and an oversized color touch-screen HMI, the machine achieves exceptional control accuracy and reliability. Recipe storage allows operators to switch between multiple product packaging parameters instantly — no re-programming required when changing SKUs. A built-in fault-display system identifies and guides rapid troubleshooting, minimizing unplanned downtime on your packaging line.
Technical Specifications
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Film Width: 320 mm – 1,250 mm
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Bag Width: 50 mm – 600 mm
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Bag Length: 60 mm – 800 mm
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Applicable Materials: Liquids, powders, granules, irregular solids
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Power Supply: 220 V, 50/60 Hz, 3.0 kW
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Compressed Air Pressure: 6–8 kg/cm²
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Air Consumption: 0.3 m³/min
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Bag Types: Pillow bag, gusset bag, hang-hole bag
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Control System: PLC + multi-axis servo + pneumatic control
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HMI: Large-format color touch screen
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Film Drive: Single or dual belt film-pulling system
Key Features and Machine Characteristics
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Multi-Axis Servo & PLC Control: The drive core combines a PLC servo system, pneumatic control system, and oversized touch-screen HMI to maximize control precision, reliability, and intelligence — delivering consistent speed packaging performance shift after shift.
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Intelligent Temperature Controller: Precise sealing-temperature management ensures every seal is flat, clean, and aesthetically consistent — critical for food-grade and pharmaceutical packaging standards.
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Full-Process Automation: Automatically completes metering, film feeding, bag forming, filling, date printing, gas flushing (or vacuum), finished-product conveying, and piece counting in one continuous cycle — zero manual intervention required.
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Multi-Recipe Touch-Screen Storage: Store packaging parameters for multiple products on the HMI. Switch SKUs instantly without re-entering settings, dramatically reducing changeover time on high-mix production lines.
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Single & Dual Belt Film Drive: Smooth, fast, low-friction film transport minimizes film tension variation, reduces film waste, and extends film-roll service life.
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Fault Display & Diagnostics: Real-time fault-display system pinpoints errors immediately, enabling rapid troubleshooting and reducing mean time to repair (MTTR).
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Safety Guards Compliant: Equipped with full safety guarding that meets enterprise safety management requirements — suitable for GMP and regulated production environments.
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Flexible Bag Format Options: Produces pillow bags and gusset bags; optional hang-hole punching available for retail-ready packaging.
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Modular Metering Integration: Pairs with weighing, volumetric cup, auger screw, or liquid pump metering systems depending on material type — one machine platform, multiple filling solutions.
Application Areas
This vertical packaging machine is optimized for the following industries and material types:
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Snack & Confectionery: Candy and confectionery pillow-bag packaging; potato chips and puffed snack chip packaging machine applications; small cookies and crackers back-seal vertical packaging; nuts, seeds, and roasted dry fruits granule filling machine use.
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Sugar & Seasoning: Granular sugar and fine sugar powder packaging machine filling; seasoning blends, spice powders, and starch auger-fill packaging; sauce and condiment liquid packaging machine pouch filling.
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Dairy & Beverage: Milk powder and infant formula powder packaging machine with auger metering; milk tea powder and instant beverage powder VFFS packaging; liquid drink and juice vacuum packaging machine pouch filling.
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Frozen & Processed Food: Frozen food speed packaging with gas-flush modified atmosphere; pre-portioned ingredient granule filling machine for ready-meal kits.
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Pharmaceutical & Chemical: Fine chemical powder packaging machine with dust-containment sealing; granular pharmaceutical excipient automatic metering packaging machine; industrial granule and pellet back-seal vertical packaging.
Customization & Optional Modules
The machine can be configured with the following optional modules to match your specific production requirements: auger screw filler (powder), multi-head weigher (granules), liquid pump filler, nitrogen gas flushing / vacuum packaging, date inkjet or hot-stamp printer, hang-hole punch, and automatic rejection conveyor. Material contact parts can be upgraded to 316L stainless steel for enhanced chemical resistance or stricter GMP compliance.
Delivery & Support
Standard lead time: 25–45 business days depending on configuration. Factory acceptance testing (FAT) is included before shipment. On-site installation, commissioning, and operator training are available upon request. Each machine comes with a 12-month warranty on mechanical and electrical components, with spare-parts kits and remote technical support provided by Keypack Intelligent Technology Co., Ltd.
Frequently Asked Questions
Q1: What bag sizes can this VFFS machine produce, and can it switch between pillow bags and gusset bags?
A: The machine supports bag widths from 50 mm to 600 mm and bag lengths from 60 mm to 800 mm, covering a wide range of mid-to-large format pouch sizes. It is compatible with both pillow bags (back-seal) and gusset bags. Switching between bag formats requires a tooling changeover; hang-hole punching is available as an optional add-on module for retail-ready packaging.
Q2: What types of materials can this machine handle, and do I need a different metering system for powders vs. granules?
A: Yes — the metering system is selected based on your material type. For free-flowing granules (candy, nuts, frozen food), a multi-head combination weigher is recommended. For fine powders (milk powder, starch, seasoning), an auger screw filler provides accurate volumetric dosing. For liquids and sauces, a liquid pump filler is used. The machine platform is the same; only the metering head changes, making it a flexible solution for multi-product facilities.
Q3: How long does it take to change over to a different product or bag size?
A: Changeover time depends on whether you are switching bag size, film width, or material type. For parameter-only changes (same bag format, different fill weight), the HMI recipe storage allows instant recall of saved settings — typically under 5 minutes. For physical format changes (different bag width or film roll), mechanical adjustments are required and typically take 20–40 minutes with a trained operator.
Q4: What are the installation requirements, and is on-site commissioning support available?
A: The machine requires a 220 V / 50–60 Hz power supply (3.0 kW) and a compressed air supply at 6–8 kg/cm² with a consumption rate of 0.3 m³/min. A flat, level floor space sufficient for the machine footprint plus operator access clearance is needed. Factory acceptance testing (FAT) is completed before shipment. On-site installation, commissioning, and operator training are available upon request — please contact Keypack Intelligent Technology Co., Ltd. to arrange a service engineer visit.
