The raw materials for making plastic tableware are usually polypropylene and polyethylene.
Relatively speaking, polypropylene has more varieties, more complex uses, and a wide range of fields. The main varieties are homopolypropylene, block copolymer polypropylene (Copp) and random copolymer polypropylene (Rapp), depending on the application. Differently, homopolymerization is mainly used in the fields of drawing, fiber, injection, BOPP film, etc. Copolymer polypropylene is mainly used in household appliance injection parts, modified raw materials, daily injection products, pipes, etc., and atactic polypropylene is mainly used for transparency. Products, high-performance products, high-performance pipes, etc.
Commonly used polyethylene can be classified into low-density polyethylene (LDPE), high-density polyethylene (HDPE) and linear low-density polyethylene (LLDPE). Among the three, HDPE has better thermal, electrical and mechanical properties, while LDPE and LLDPE have better flexibility, impact properties and film forming properties. LDPE and LLDPE are mainly used for packaging film, agricultural film, plastic modification, etc., while HDPE is widely used in various fields such as film, pipe, and injection daily necessities.