What is a high temperature cooking bag?

What is a high temperature cooking bag?

In order to meet the performance requirements of the retort pouch, the outer layer of the structure is selected to have a high-strength polyester film, the middle layer is selected to have a light-shielding and air-tight aluminum foil, and the inner layer is a polypropylene film. Three-layer structure: PET/AL/CPP, PPET/PA/CPP, and four-layer structure with PET/AL/PA/CPP

In the process of meat food production and processing, there are always two kinds of cooking processes, namely high temperature and high pressure sterilization and low temperature and atmospheric pressure sterilization. The low-temperature sterilization of meat food is low in heating temperature, the fiber of the meat is not destroyed, so the taste is fresh and tender, and various nutrients are well preserved; however, since it only kills the pathogenic bacteria, there are still a large number of spoilage bacteria, which not only has a short shelf life, And it is very easy to cause losses in the circulation field. High-temperature sterilization of meat foods due to high heating temperature causes the fiber of the meat to shrink excessively, and the taste is not as good as that of low-temperature sterilization products, but because it kills all bacteria, the internal cause of corruption is eliminated, and the shelf life can be greatly extended.

High-temperature sterilization meat products, such as high-barrier packaging materials, not only store at room temperature for a long shelf life, but also are convenient for transportation, storage, and sales, which is very suitable for the consumption needs of modern society. Therefore, vigorously developing the production of meat products that are resistant to storage at room temperature is an important product development direction of the meat food industry. The packaging industry is in line with this development trend and can make a difference, not only to meet the needs of the food industry, but also to win a broad market for itself.

In order to prolong the shelf life of meat products, high-temperature cooked meat products are packaged in vacuum body. When the aluminum foil composite material is vacuumed, since the softness of the aluminum foil is insufficient, it is difficult to completely stick it to the contents, which may cause the air in the packaging bag to be uncleaned, which may affect the preservation of the food. Therefore, when using aluminum foil for meat packaging, the thickness should not be too high. However, because its barrier property depends on the thickness and processing level, when the thickness is small, a large number of pinholes are likely to occur, so the packaging of the meat storage for storage resistance, the thickness of the aluminum foil should not be too thin; for example, the aluminum foil is too thin, the aluminum foil The composite film also forms a lot of wrinkles after being evacuated, and is thus prone to cracks, resulting in loss of barrier properties. Therefore, the thickness, barrier property and softness of the aluminum foil are always three contradictions that plague the application of the aluminum foil composite film.

From the market point of view, the aluminum foil composite film packaging food is opaque, so that consumers can not see the color and shape of the contents, which is not conducive to consumers' purchase, and some manufacturers use the aluminum-plastic composite film to opaquely cover the defects of the product, and even falsify. , pit the consumer. Therefore, most consumers choose completely transparent packaging instead of opaque aluminum-plastic composite film packaging, resulting in poor sales of such packaging food. Aluminum-plastic composite packaging can not be heated by microwave, which is more expensive than plastic film, which affects the application of aluminum-plastic composite film. Therefore, the food processing industry has always hoped that the packaging material process can provide a barrier material similar to the aluminum-plastic composite film, but the packaging material that is both transparent and resistant to high temperature cooking replaces the aluminum-plastic composite film.