Discussion on the difference between PE and PPE plastic bags
POLYETHYLENE (PE) is a polymer polymerized from ethylene. Polyethylene can be divided into high density polyethylene and low density polyethylene according to different polymerization methods, molecular weight and chain structure.
LOW DENSITY POLYETHYLENE (LDPE), commonly known as high pressure polyethylene, has low density and soft material, and is mainly used in plastic bags and agricultural films. This is what we often call PE material.
LDPE material has been produced since 1939, with a long history and mature technology. The material itself is transparent, and the price is relatively the lowest price for making plastic bags, and the effect is also good. Commonly used in electronics, clothing and making handbags, etc.
Polyethylene, also known as ethylene-propylene rubber, is a kind of copolymer rubber with ethylene and propylene, which came out after the appearance of polyethylene and polypropylene. It can be divided into two categories: ethylene-propylene-diene rubber and ethylene-propylene-diene rubber. The former is a copolymer of ethylene and propylene, while the latter is a copolymer of ethylene, propylene and a small amount of unconjugated dienes. The film density and transparency of PPE are higher than PE, but its cost is also higher than PE. The softest material is mainly used for plastic bags, electronic films, etc.
PPE combines the advantages of polyethylene and polypropylene, and has the characteristics of high transparency and softness.
At present, it is a new material. The price is higher than that of PE and PP. Commonly used in the production of packaging bags in various garment industries, handicrafts, textiles and printed matter industries.