The difference between PP plastic and PE plastic: differences in composition, characteristics, and scope of use
1、 Differences in composition
The main component of PP is polypropylene. The density of polypropylene is about 0.90 among all plastics. Polypropylene is commonly used to produce building products such as pipes and sanitary ware. The main component of PE is polyethylene. Polyethylene plastic is mainly used in construction for water supply and drainage pipes and sanitary ware.
2、 Differences in Characteristics
PP bags are transparent in color, of excellent quality, and have good toughness. Due to their hard and brittle material, they are only suitable for packaging and not for load-bearing. Using color printing and offset printing technology, the color is bright and often used as woven bags. In addition, PP bags are stretchable polypropylene plastic, which belongs to a type of thermoplastic. It is odorless and has a smooth and transparent surface. Commonly used for packaging in various industries such as cosmetics, food, toys, clothing, stationery, electronics, and hardware products.
PE is a globally recognized food contact material. Odorless and odorless, with a wax like texture, meeting the hygiene standards for food packaging. Polyethylene film, lightweight and transparent, has properties such as moisture resistance, oxygen resistance, acid resistance, alkali resistance, average air tightness, good ductility, and excellent heat sealing. It is known as the "flower of plastics" and is an important material for plastic packaging printing.
3、 Differences in usage scope
Polyethylene can be processed by blow molding, extrusion, injection molding, and other methods, and is widely used in the manufacture of films, hollow products, fibers, and daily necessities. Polypropylene can be used to make greenhouse gas canopies, plastic films, cultivation bottles, agricultural tools, fish nets, etc., and to make food turnover boxes, food bags, beverage packaging bottles, etc.
