VT-400 MAP Tray Sealing
- Description
- FAQs โ Promarks VT-400 Tray Sealer Machine
Description
Standard Features – MAP Tray Sealer:
- Heavy Gauge Stainless Steel Construction
- Semi-Automatic Operation
- Automatic Film Advance and Cutting System
- PNC-01 Microprocessor Control Panel with 14 Programs and IP56 Water Resistant
- Printed Film Registration System
- Busch Vacuum Pump
- Internal Gas Holding Tank
- Auto Tray Lift System for Easy Removal
- Film Tensioner
Options:
- Single Phase Vacuum Pump up to 100m3/h(5HP)
- Extra Die Sets
- Custom Voltage
Specification:
| MODELS | VT-400 |
|---|---|
| Tray Size (A) | 11.4″/290mm |
| Tray Size (B) | 14.2″/360mm (Max. 2 Trays) |
| Tray Height | 3.5″/90mm |
| Film Diameter | O.D. (15.7″/400mm), I.D. (3″/76mm) |
| Film Width (Maximum) | 15.7″/400mm |
| Vacuum Pump Capacity | 40mยณ/h (2 hp/2kw) |
| Voltage | 220V/3ph/60Hz/15amp |
| Machine Size LxWxH | 1263mm x 1165mm x 1600mm (50″x46″x63″) |
| Machine Weight | 913 lbs / 414kg |
Drawing โ VT400 โ MAP Tray Sealer
The Promarks VT400 and VT570 are modified atmosphere tray sealers that are designed for small – to medium-sized operations. By pulling a vacuum and inserting a pure gas mixture, the optimal shelf life can be reached for a wide range of products. Capable of accepting a variety of trays of all shapes and sizes, our machines can be built for your specific tray and film configurations. Vacuum, gas, and seal times can all be easily adjusted via the fully programmable digital control board. For added reliability, we only use Busch USA vacuum pumps on all of our modified atmosphere tray sealers.
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Tray Sealer & MAP Machine - Inquiry Form
Installation & Setup
What are the electrical requirements of the VT-400 tray sealer?
The machine requires 220V, 50/60Hz power supply.
What air pressure is needed for operation?
Compressed air requirement is 0.6 โ 0.7 MPa with a stable supply.
What is the air consumption per cycle?
Approximately 3.3 liters per cycle.
What tray size can the machine handle?
Maximum tray size is 380 ร 300 ร 100 mm.
What should be checked during installation?
- Proper power connection
- Correct grounding
- Air compressor connection
- Film alignment
- Pump rotation direction
Operation & Working
What packaging modes does the VT-400 support?
- Traditional sealing only
- Vacuum packaging (optional)
- Modified Atmosphere Packaging (MAP / gas flushing)
How does the sealing process work?
The machine lowers the mold, clamps the film, seals it using a heated plate, cuts excess film, and completes the cycle automatically.
What is the sealing temperature range?
Recommended sealing plate temperature is 120ยฐC โ 180ยฐC.
What happens during vacuum packaging mode?
Air is removed from the chamber, then sealing is performed, and finally air/gas is restored to normalize pressure.
What is gas flushing used for?
Gas flushing replaces oxygen with protective gas to extend product shelf life.
Control Panel & Settings
What does the LED control panel do?
It controls vacuum, gas, sealing time, cooling, and cycle programming steps.
What are the main process steps in the cycle?
- Vacuum (VAC)
- Gas (GAS)
- Seal 1 (SEAL1)
- Seal 2 (SEAL2)
- Cooling (COOL)
- Soft air release (SOFT)
What is the function of โSOFT AIRโ?
It slowly releases pressure to prevent film damage and improve appearance.
Can I adjust vacuum level?
Yes, vacuum can be set from 0% to 99% or by time-based control.
What is โPURGEโ function?
It combines vacuum and gas flushing cycles for improved packaging results.
Film & Packaging
How is film inserted into the machine?
- Place reel on shaft
- Guide film under sealing station
- Align properly
- Fix scrap film to rewinding shaft
- Ensure sealing side faces tray
What happens to excess film after sealing?
It is automatically cut and wound onto the scrap roller shaft.
What type of trays can be used?
Aluminum, PVC, APET, CPET, PP, and laminated paper trays.
Why is film alignment important?
Incorrect alignment can cause poor sealing or film wrinkling.
Performance & Capacity
What is the production capacity of the VT-400?
Approximately 500โ600 cycles per hour.
Is the machine automatic or semi-automatic?
It is a semi-automatic tray sealing machine.
Safety & Warnings
What safety precautions should be followed?
- Do not operate under alcohol/drug influence
- Ensure proper grounding
- Avoid touching hot sealing areas
- Do not use metal objects near working area
- Only trained operators should run the machine
Why is grounding important?
Improper grounding can cause electrical hazards and damage.
Can two operators use the machine at the same time?
No, simultaneous operation by two operators is strictly not allowed.
Troubleshooting
Why is vacuum not reaching proper level?
Possible reasons:
- Air leakage
- Incorrect settings
- High altitude/air pressure conditions
What to do if sealing is weak?
Check:
- Temperature (120โ180ยฐC range)
- Sealing time settings
- Film compatibility
Why does the machine not start cycle?
Check:
- Power supply connection
- Air pressure
- Control panel status (standby or ON mode)
Maintenance
Can maintenance be done immediately after operation?
No, wait for cooling before performing maintenance.
What happens if machine is modified?
Unauthorized modification may void warranty and cause malfunction.
Advanced Functions
What is โGroup Selectionโ in settings?
It allows saving and selecting up to 24 preset packaging programs.
What is โSTEP Selectionโ?
It lets you adjust individual parameters like VAC, GAS, SEAL time, and COOL time.
What is pulse gas flushing?
It alternates gas ON/OFF cycles to improve packaging atmosphere control.

























