Nowadays, there are two main materials for vacuum compression bags on the market, one is PA + PE. PA is the abbreviation of polyamide, commonly known as nylon, PE is the abbreviation of polyethylene, that is, plastics. PA+PE vacuum compression bag is a new type of plastic made of nylon and plastic. The vacuum compression bag of this kind of material is softer, does not change the character at low temperature, and is more durable. The other is PET + PE material. PET is the abbreviation of polyethylene terephthalate, commonly known as polyester polyester. PET+PE is a composite of polyester and plastics. Vacuum compression bag made of PET + PE is not soft enough, especially when it hardens and cracks easily at low temperature. It is better for friends in the north not to use vacuum compression bag made of this material.
So how to identify these two different materials? To be honest, friends who have not used vacuum compression bags are just like identifying counterfeit banknotes. It is difficult to distinguish between real and false counterfeit banknotes with high simulation, but the contrast with real banknotes reveals its original form. Therefore, in order to identify two different materials, it is better to compare them together. The method is: touch, feel more soft is PA material, hard is PET material. Second listen, rub with your hands, the voice is more blunt is PA material, the voice is more sharp and harsh is PET material. Third, put the two materials in the refrigerator refrigeration room for a while, and take out the harder one is made of PET.
Nowadays, many brands of compression bags on the Internet sell very cheaply, also boasting PA + PE. This vast number of consumers can take precautions. Many businesses will make some PA + PE recycled materials into compression bags, and will be very thick, 9 silks, 12 silks and so on (1 silk equals 0.01mm), to reduce costs, and thus carry out low-cost promotions. Distinguishing recycled materials depends mainly on the transparency of bags and the transparency of bags.

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