Shanghai aluminum moisture barrier bag Main products: aluminum foil bag, vacuum bag, shielding bags, board vacuum bags, cooking food vacuum bag, nylon vacuum bag, anti-static bags and other packaging materials, metal. Also known as decompression vacuum packaging, is based on the principle of atmospheric pressure, the main role of the vacuum bag is oxygen, in order to help prevent food spoilage or deterioration. Vacuum packaging is to food packaging bag and oxygen within the cell by pumping deprived, so that microbial processes in the loss of "living environment". Vacuum food can prevent oxidation, the food does not taste, deterioration reduce the loss of vitamin A and C. Product description: 1. air barrier performance, oxidation resistance, waterproof, moisture-proof. 2. High mechanical properties, high blasting performance, strong anti-puncture tear resistance. 3. High temperature (shield 1 ℃), low temperature (-50 ℃), oil, Paul Hong good performance. 4.wudu tasteless, with food, pharmaceutical packaging hygiene standards. 5. sealing performance, flexibility, good barrier properties. Vacuum structure is generally: PA / PE or PA / CPP PET / PE or PET / CPP also have three, four, in order to increase the performance of the material texture, PET / PA / PE PET / AL / CPP PA / AL / CPP PET / PA / AL / CPP