Food plastic bags are generally made of polyethylene (PE) or polypropylene (PP), which are resistant to high temperatures, low temperatures, waterproof, moisture-proof, and oxidation-proof, and can effectively protect the quality and safety of food.
 

Commonly used food packaging plastic bags are mostly made of polyethylene film, which is non-toxic and can be used to contain food. There is also a film made of polyvinyl chloride. PVC itself is non-toxic, but the additives added according to the purpose of the film are often substances harmful to the human body and have a certain degree of toxicity. Therefore, this type of film and plastic bags made of this film are not suitable for holding food. It can also be used to stick things on for easier operation.