Difference between high-temperature vacuum bag and freezing vacuum bag

　　High temperature vacuum bag is a typical polyolefin polymer just like freezing vacuum bag. The two kinds of vacuum bags have many similarities, such as non-toxic, odorless, tasteless, and reliable sanitary performance; Acid, alkali, salt and a variety of chemical substances, stable performance; Balance of physical and mechanical properties; Good moisture resistance, moisture resistance, oxygen resistance and oil resistance; It has excellent formability and good heat sealing property. Like high-temperature vacuum bags, high-temperature vacuum bags also have the advantages of large production, wide sources and low price.

　　The main differences between high-temperature vacuum bag and freezing vacuum bag are as follows:

　　① The heat resistance of the high-temperature vacuum bag is far better than that of the frozen vacuum bag, which can withstand the high temperature above 120 ℃. The high-temperature vacuum bag packaging food can even withstand the requirements of high temperature cooking above 140 ℃.

　　② The transparency and strength of high-temperature vacuum bag are also better than those of freezing vacuum bag. Although the oil resistance of the high-temperature vacuum bag is not ideal, it is better than the freezing vacuum bag.

　　③ Compared with the freeze vacuum bag plastics, the main disadvantage of high-temperature vacuum bag is its poor cold resistance. The homopolymer of high-temperature vacuum bag may show obvious brittleness at 0 ℃.

　　To sum up, there is a big difference between high-temperature vacuum bag and freezing vacuum bag. It depends on the packaging requirements of the product to determine what kind of vacuum bag is suitable. It is either the most expensive or the best. Only the ones that meet the requirements are good.

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