Bagging and Flexible Packaging Sealing Equipment
Liquid Back Seal / Three-Side Seal VFFS Packaging Machine
The liquid VFFS packaging machine starts from roll film to complete bag making, liquid or paste metering, longitudinal or side sealing, cross sealing and cutting, and bag discharge. Back seal and three-side seal correspond to different bag forming structures. Pump type, bag length, seal contamination prevention, suck-back, and cleaning are confirmed based on the material and film. Coding, gas flushing, or downstre...
Technical parameters
- Capacity and Speed
- Confirmed based on bag length, metering time, material foaming or stringing, cross seal contamination prevention, and film running; fixed values not published without project va...
- Automation Scope
- Automatic roll film bag making, liquid metering, and sealing/cutting; coding, easy-tear notch, gas flushing, inspection, and conveying are optional per project
- Applicable Container or Packaging
- Back seal or three-side seal bags formed online from roll film; bag width, length, seal edges, and tear notch confirmed per finished bag sample
- Applicable Materials
- Liquids, pastes, or materials containing small particles; viscosity, temperature, foaming, stringing, corrosiveness, and cleaning conditions must be specified
- Packaging Materials and Consumables
- Composite roll film suitable for bag making and heat sealing; film width, thickness, friction, heat seal layer, and print registration confirmed per film sample
- Basic Process
- Roll film unwinding, bag forming, longitudinal or side sealing, metering filling, cross sealing and cutting, and bag discharge
- Tooling and Changeover
- Adjust or replace bag former, film path, pump, filling nozzle, and sealing/cutting positions according to bag width, bag shape, and filling range
- Power, Air Supply, and Layout
- Confirm equipment dimensions, power, air supply, maintenance space, and upstream/downstream interfaces based on film drive, liquid metering, heating sealing/cutting, cleaning dr...
Liquid VFFS Bag Making and Sealing Running Video
Local silent clip showing transparent film bag making, longitudinal seal, cross seal, and cutting actions; liquid pump, fill volume, and easy-tear notch options need separate confirmation.
Selection guide
- Back seal or three-side seal bag type selected based on finished appearance, film material, and bag forming structure
- Metering pump, filling nozzle, and drip-proof confirmed according to viscosity, foaming, and particle conditions
- Temperature-maintained stirring, coding, easy-tear notch, gas flushing, and inspection are all optional modules
- Filling accuracy, sealing window, and speed confirmed through material and film trials
Applications
- Small bag forming and packaging of sauces, liquid seasonings, daily chemical liquids or pastes
- Projects requiring comparison of back seal and three-side seal bag finished forms
- Packaging of materials with foaming, stringing, temperature maintenance, or drip-proof requirements
- Production lines planning to add optional coding, easy-tear notch, inspection, or finished bag conveying
Frequently Asked Questions
- Can back seal and three-side seal be switched on the same machine? The structures are quite different; compatibility depends on the bag forming and sealing design. Usually, change parts or separate configurations are...
- Can liquids with particles be packaged? It can be evaluated, but particle size, concentration, and integrity affect the pump, valves, filling nozzle, and seal contamination. Actual material testing is required.
Send samples and capacity requirements for a clearer solution
- Liquid or paste sample, viscosity, temperature, foaming, stringing, and particle information
- Target fill weight per bag, allowable tolerance, and drip-proof or temperature maintenance requirements
- Roll film and finished bag sample, bag width and length, heat seal layer, and print registration
- Cleaning and material change, target speed, power and air supply, and finished bag conveying requirements
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