Semi-Automatic Modified Atmosphere Tray Sealer

The JR-M series vertical modified atmosphere tray sealer is a high-end packaging equipment, entirely made of 304 stainless steel (including casters). The machine features a high-quality, thickened mechanical design, with a mold closure variable of only 0.008 inches, and the machine can be used over 1 million times. This series of modified atmosphere tray seal adopts a multi-mold combination form, which can adapt to any regular packaging box, and allows for any proportional combination of nitrogen, oxygen, and carbon dioxide gases. It is suitable for all boxed packaging and fresh-keeping fields such as fresh meat, aquatic products, poultry, frozen products, fruits, vegetables, and pre-cut vegetables. Whether for fresh food delivery or supermarket shelf display and sales of packaged products, we provide complete packaging solutions.

A controlled atmosphere packaging machine is an automated equipment that extends the shelf life of food by replacing the gas inside the packaging (usually a mixture of CO₂, N₂, O₂, etc.). It is widely used in the fields of fresh produce, cooked food, and pre-prepared dishes.

Core Structure and Working Principle

(1) Key Components

Component Function

Vacuum System Evacuates original air from packaging to create a low-oxygen environment (optional).

Gas Mixing Unit Blends CO₂/N₂/O₂ in preset ratios (e.g., 70% CO₂ + 30% N₂ for meat products).

Gas Injection Nozzle Precisely infuses mixed gas into packaging to minimize gas waste.

Heat Sealing Mechanism Rapidly seals packaging (using pulse heating or constant-temperature sealing).

PLC Control System Adjusts gas ratios, vacuum duration, sealing temperature, and other parameters.

(2) Workflow

1. Loading → 2. Vacuumizing (optional) → 3. Gas Injection → 4. Heat Sealing → 5. Finished Product Output