Working Principle And Performance Of Dq260t-s Pneumatic Pallet Sealing Machine

For the DQ260T-S tray sealing machine, achieving modified atmosphere packaging requires three actions: (1) set gas mixture to match food type (oxygen for red meat, nitrogen for produce), (2) adjust sealing temperature to tray material, and (3) set cycle speed to 5–6 trays per minute for continuous production. This extends fresh meat shelf life from 3–5 days to 14–21 days, maintains product appearance, and reduces oxidation-related spoilage. The 310×200×60 mm tray capacity accommodates standard retail portions.

Operating Principle

Gas Flush and Atmosphere Modification

• The tray sealing machine performs gas flushing through tray positioning, air evacuation, gas injection, and heat sealing.

• Nozzles displace oxygen with controlled gas blends based on food type.

• The DQ260T-S achieves residual oxygen below 1%, the threshold for effective shelf-life extension.

• Rolled film up to 260 mm width and 200 mm diameter supports continuous operation.

Pneumatic Sealing Mechanism

• Pneumatic cylinders drive the sealing head downward, applying pressure and temperature to the film-tray interface.

• Heated sealing dies activate only upon reaching set parameters.

• The pneumatic system delivers consistent force, producing uniform seals across each cycle.

Technical Specifications

The table top tray sealing machine suits production environments with limited floor space. Pneumatic operation eliminates complex linkages, reducing maintenance. The 65 kg weight allows mobility between workstations.

Applications

• Fresh meat and poultry: MAP with the tray sealing machine extends shelf life from 3–5 days to 14–21 days. Gas mixtures of 70–80% oxygen and 20–30% CO₂ preserve bloom color while inhibiting bacterial growth.

• Ready-to-eat meals and produce: the tray sealers food packaging capabilities slow ripening and reduce ethylene production. Throughput of 5–6 cycles per minute matches medium-volume lines.

Operational Workflow

1. Tray loading – place filled trays onto the platform.

2. Film feeding – roll film advances over the tray opening (≤260 mm width).

3. Gas flush – vacuum draws air, then gas mixture injects into the tray.

4. Sealing – heated die presses film to tray flange.

5. Cutting – blade trims excess film around the seal.

6. Tray ejection – sealed tray moves to discharge.

The sequence runs automatically with pneumatic timers controlling each stage. The 60 mm tray height accommodates deep containers for bulk products.

Performance Factors

Seal quality depends on temperature (150–180°C), pressure (0.6–0.8 MPa), and dwell time (0.5–2.0 seconds). The DQ260T-S maintains these within ±2% tolerance, preventing gas loss and contamination. Oxygen sensors monitor residual levels for real-time adjustments, maintaining O₂ within ±0.2% of setpoint across batches.

Maintenance

• Sealing head: daily cleaning with food-grade solvents prevents carbon buildup. Quick-release dies simplify removal.

• Pneumatic system: install filtration and drying units for compressed air. Check fittings regularly for leaks. Lubricate moving components per schedule.

Performance Overview

A pneumatic tray sealer（DQ260T-S） like the DQ260T-S uses compressed air to drive a heated sealing head that bonds film to food trays. It performs gas flushing to replace air with protective gas mixtures, extending product shelf life. The machine cycles automatically, sealing 5–6 trays per minute with consistent pressure and temperature control, handling trays up to 310×200×60 mm.

Selection Guidelines

When evaluating tray sealing machines, match throughput requirements against cycle rates – the DQ260T-S at 5–6 trays/min suits medium volumes. Verify compressed air capacity at 0.6–0.8 MPa and power compatibility. Evaluate gas mixing system separately – ensure supply maintains peak flow rates. Match film to product: high-barrier for extended shelf life, breathable for fresh produce.

The pneumatic design reduces electrical hazards in wet environments and simplifies washdown. Tool-less mold adjustment cuts changeover time to under 5 minutes. The 65 kg weight and compact 910×760×660 mm footprint make this table top tray sealer a practical choice for facilities with space constraints.

Pre-production testing on sample trays establishes baseline parameters. Variations in tray material or film type often require adjustments beyond factory defaults.

1. Run seal tests at 150°C, 165°C, and 180°C to identify optimal temperature for the specific tray material.

2. Verify gas composition with an oxygen analyzer at each shift start and after film roll changes.

3. Adjust dwell time based on tray flange thickness – thicker flanges require longer sealing duration.

These measures ensure consistent seal quality, reduce film waste, and maintain throughput. The DQ260T-S operates with standard gas mixers for complete MAP solutions.

DQ260T-S pneumatic tray sealing and packaging machine we manufactured, is suitable for factory packaging of ready-to-use foods such as stores and supermarkets or all kinds of quick-frozen foods. The table top machine is simple to operate, while trays are not filled with fresh-keeping gas after sealed. The main structure of the product is made of stainless steel, and the mold is anodized with 6061, which is safe and sanitary. Desktop structure design, small floor area. According to different production requirements, our factory can customize the equipment as per your requirement, and help you sell the machines to end users.

* Molds customized for the popular tray sizes in your territory for your marketing penetrating, with free charge.

* Stainless steel and anti-corrosive aluminum construction.

* Sealing temp/time etc. can be easily adjusted on control panel. 

* Easy to operate, and neat cutting and sealing of film, pneumatic drive.

* Precise and automatic film feeding with photoelectric and disc sensors.

* Safe and hygienic, CE certification.

* Supply training video and after-sales service online with quick response.

* Voltage/plug type can be customized as required. 

* Package material: trays made from Degradable pulp box/ PP / PET/Aluminum foil, and we could supply tray+film according to your size and print if needed.

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If you order more than 5pcs, there will be more competitive prices and marketing support.