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Classification of food packaging bag materials name polyethylene HPLDPE LPHDPE Linear Low Density Polyethylene Polypropylene (BOPP, OPP) polystyrene abbreviation PE LDPE HDPE LLDPE PP PS feature Lightest plastic for food packaging The main disadvantage is brittleness Water resistance good higher than LDPE Water vapor transmission rate similar to HDPE Poor, lower than PE Gas barrier […]

I believe that many people are not very clear about what aluminum film composite film, aluminum-plastic composite film, aluminized film, and aluminum-plastic film are. What is the difference between them? The following is a detailed explanation of the differences between these membranes. 1. Aluminum foil composite film and aluminum-plastic composite film (1) Aluminum foil composite

1. Divided according to the laminated form: single-layer plastic packaging bags and multi-layer laminated plastic packaging bags. Single-layer plastic packaging bags are mainly made of PE plastic film, and there is also heat-sealable BOPP. Features of single-layer plastic packaging bags: 1) Cheap price 2) Using surface printing process 3) Most of them use benzene-soluble ink