Zipper Foil Cooking Bag Set with Oxygen Adsorbent

retort pouch is a composite plastic film bag that can be heat treated, which has the advantages of both canned containers and boiling water resistant plastic bags.
The food can be left intact in the bag, sterilized and heated at high temperature (usually at 120~135°C), and taken out to eat. Proven for over ten years, it is an ideal sales packaging container. It is suitable for the packaging of meat and soy products, is convenient, hygienic and practical, and can well maintain the original flavor of the food, which is favored by consumers.
In the 1960s, the United States invented the aluminum-plastic composite film in order to solve the packaging of aerospace food. It is used to package meat food, and it can be stored at room temperature through high temperature and high pressure sterilization, with a shelf life of more than 1 year. The role of the aluminum-plastic composite film is similar to that of a can, which is soft and light, so it is named soft can. At present, meat products with a long shelf life are stored at room temperature, such as using hard packaging containers, or using tinplate cans and glass bottles; if using flexible packaging, almost all use aluminum-plastic composite films.

Manufacturing process of high temperature resistant retort pouch At present, most of the retort bags in the world are manufactured by dry compounding method, and a few can also be manufactured by solvent-free compounding method or co-extrusion compounding method. The quality of dry compounding is higher than that of solvent-free compounding, and the arrangement and combination of materials are more reasonable and extensive than co-extrusion compounding, and it is more reliable to use.

In order to meet the functional requirements of the retort pouch, the outer layer of the structure is made of high-strength polyester film, the middle layer is made of light-shielding, air-tight aluminum foil, and the inner layer is made of polypropylene film. There are three-layer structures: PET/AL/CPP, PPET/PA/CPP;The four-layer structure is PET/AL/PA/CPP.