Скачать или смотреть Fresh Beef Skin Vacuum Packing Machine Automatic Vacuum Sealer Plastic Film

The principle of skin packaging is to place the product on a breathable bottom plate (cardboard or plastic sheet), cover it with a plastic film that is softened by heating, and vacuumize the substrate to make the film tightly wrap the product and seal with the bottom plate. .
1. The commonly used food-specific vacuum skin packaging films are as follows.
Breathable film: high air permeability, easy to form on the body. Suitable for frozen food;
Oxygen barrier film: high barrier to oxygen, can effectively prolong the shelf life of food; good formability, can maintain the complete shape of soft food;
Multi-layer co-extruded electronic cross-linked film: good barrier properties, suitable for fresh and refrigerated food, mainly used in automatic continuous body packaging machine.
2.In terms of the bottom plate, there are generally two types, one is the flat bottom tray, which is made of plastic sheet or paper-plastic composite material; the other is the tray, which is a plastic tray with a certain shape. Although its packaging cost is relatively high, it has high appearance and strong functionality, and is suitable for terminal channels such as new retail.