Material and process inventory of the hottest cook

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Material and process inventory of cooking packaging bag

cooking packaging bag is a composite packaging designed to replace metal hard cans, also known as soft cans. Cooking bags have been developing rapidly at home and abroad in recent years because they can be stored at room temperature and have a long storage period. They can pack both cold food and cooked food. They are easy to eat and carry. They can be used as tourist food. Its special packaging - cooking resistant composite film and bag has also become an important part of flexible packaging production

the rapid development of the soft packaging industry based on cooking bags is also based on its special performance. Therefore, the topic of this issue will focus on the materials used for cooking bags, especially its process and problems, as well as detection. It is hoped that it will have a certain reference significance for soft packaging enterprises

advantages and classification of cooking packaging bags

1. main advantages of cooking packaging bags (1) as the cooking packaging bags are relatively thin, they can meet the sterilization requirements in a short time, so they can maintain the color, aroma and taste of food. (2) The packaged food can be stored under normal temperature if the indication is low, and the shelf life is long. (3) The cooking packaging bag is light, soft, stackable, takes up less space, is convenient for storage and transportation, and is also convenient for consumers to carry. (4) It is easy to use and can be opened easily without using special tools. (5) Compared with glass container and metal container packaging, the manufacturing cost of cooking packaging bag is lower. (6) The contents are diverse

2. classification of cooking packaging bags (1) according to sterilization temperature: ordinary sterilization bags, ultra-high temperature sterilization bags. (2) According to the number of composite layers; Two layers of cooking bags, three layers of cooking bags, and four or more layers of cooking bags. (3) According to light transmittance: transparent cooking bags, opaque cooking bags. (4) By function: ordinary cooking bags, high barrier cooking bags. (5) According to the compounding method, it can be divided into dry compounding bag and coextrusion compounding bag

materials for cooking packaging bags

based on the special properties of cooking bags, there are also special choices in materials, generally including (1) base materials (with two, three, four or more layers of structure), (2) adhesives (with good bonding fastness, high-temperature medium resistance and heat resistance), (3) inks (inks with two-component reactive polyurethane as binder) (4) Solvent and other materials (due to the high quality requirements of high temperature resistant cooking bags, special attention must be paid to the solvents used. First, the adhesives and inks used in high temperature resistant cooking bags want to use high-quality, high-purity, non-toxic, tasteless, odorless and residue free solvents, which should not contain benzene, toluene, xylene, cyclohexanone or other high boiling point solvents. Second, the water content of dilution solvents used in glue mixing and ink mixing should also be strictly controlled.) 。

detection of cooking bags

in the manufacturers of cooking resistant bags, how to test the packaging at different temperatures has always been a problem that the industry pays more attention to. How to provide good high-temperature cooking packaging bags to our consumers? Detection is the primary means of our control. Now our testing methods are summarized as follows:

how to do a good job in the cooking test of cooking packaging bags, how to test the high-temperature cooking test of high-temperature cooking packaging bags, how to eliminate the influence of air partial pressure, and how to accurately determine the performance of cooking resistant bags

to sum up, in recent years, the demand for cooking bags has been rising, and there have been some achievements in technology. However, it is planned to reduce the annual output of hydrofluorocarbon materials with high global warming potential by 50% by 2020. It has high cost and high risk. It needs continuous improvement in the production of flexible packaging industry to continuously improve the cooking bag technology

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