Food bag need what material?
plastic food bag main material is commonly polyethylene polypropylene PP, PE bags are widely in food packaging, food bag manufacturers must have QS certification
almost all used in plastic resin. Resin is the main ingredient in plastic, adhesive role, other plastic components can be consolidated into a whole. Although to join all kinds of additives can change the nature of the plastic, resin is decided to plastic type, performance and use of the underlying factors.
in the plastic decorative materials commonly used resin types are: polyethylene ( PE） , PVC ( PVC) , polystyrene, PS） And phenolic ( PF) , urea-formaldehyde ( UF） , epoxy ( EP) , polyester ( PR） , polyurethane ( PU） , polymethyl methacrylate ( PUMA） , organic silicon, SI) And so on. Depending on what happens when heated, synthetic resin and can be divided into two kinds of thermoplastic resin and thermosetting resins. PT differential properties, low cost, can be used for candy, treats the kink of packaging. Also can be made into heat shrinkable film, heat shrinkable packaging for food, such as food vacuum packaging, composite bags.