Common plastic sealed jars in the market are made of PET, polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and acrylonitrile-butadiene-styrene. Copolymerization compound (ABS). Which material is good mainly depends on the use and the items that need to be dressed.

1. The main application of Pet plastic: The most common use is for beverage bottles, screen protectors and other transparent protective films.

2. Polyethylene plastic is relatively soft and has a waxy texture to the touch. Compared with the same plastic, it is lighter in weight and has a certain degree of transparency. The flame is blue when burning. The main applications are: plastic wrap, vest-type plastic bags, plastic food bags, milk bottles, buckets, water bottles, etc.

3. Polypropylene is a thermoplastic resin obtained by the polymerization of propylene. Mainly used in household appliance injection parts, modified raw materials, daily injection products, pipes, etc.

4. Polystyrene plastics are widely used in optical instruments, chemical industry and daily necessities to make tea trays, sugar jars, soap boxes, cigarette boxes, student rulers, combs, etc. Due to its certain air permeability, when it is made into a film product, it can also be used as a good food packaging material.

If the plastic airtight jar is mainly used to store food, it is good to choose pet material.