The frequent use and universality of plastic packaging bags make us all pay special attention to what are the components of plastic packaging bags? Which ones can be used for food and which are not? The following editors will talk about plastic packaging with you What are the ingredients of the bag?
1. PVDC coated thin plastic packaging bag group: PVDC polyvinylidene chloride resin, often used as composite material or monomer material and co-extruded film sheet, PVDC coated film uses polypropylene, polyethylene terephthalate Alcohol, etc. are used as substrates. Pure PVDC has a high softening temperature, is close to its differentiation temperature, and has poor compatibility with common plasticizers, so it is difficult to directly apply heat molding. In fact, the PVDC film used is mostly a copolymer of vinylidene chloride and vinyl chloride, and a film with good insulation properties made by copolymerization with acrylic methyl ester.
2. Nylon plastic packaging bags: The characteristic of nylon plastic packaging bags is that the insulation does not decrease with the increase of humidity. The nylon plastic packaging bag currently used is a nylon MXD6 polycondensed from m-dimethylamine and adipic acid. It has excellent transparency and puncture resistance, and is often used in flexible food packaging with high isolation .