Different materials, PE: polyethylene, PP: polypropylene
PP is a stretchable polypropylene plastic, which is a kind of thermoplastic. PP woven bags are actually plastic bags. The characteristics of PP woven bags are non-toxic and tasteless. The surface of PP woven bag is smooth and transparent, and it is widely used in the packaging of cosmetics, food, toys, clothing, stationery, electronics, hardware products and other industries. The color of the PP woven bag is transparent, good quality, good toughness, stronger, and can’t be scratched. The processing cost of PP woven bags is very cheap, and the characteristics are: easy to burn, the flame is molten and dripping, the upper is yellow and the lower is blue, there is less smoke after leaving the fire, and it continues to burn.
PE is the abbreviation of polyethylene, which is a kind of thermoplastic resin made by polymerization of ethylene. Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (the lowest temperature can reach -70～-100℃), has good chemical stability, and can withstand most acids and alkalis (not resistant to oxidizing properties) The acid), insoluble in general solvents at room temperature, low water absorption, excellent electrical insulation performance; but polyethylene is very sensitive to environmental stress (chemical and mechanical effects), poor heat aging resistance. The properties of polyethylene vary from species to species, mainly depending on the molecular structure and density. Different production methods can be used to obtain products with different densities (0.91～0.96g/cm3).
In addition, the cling film made of PE material can also be called PE woven bag. Note that the cling film directly in contact with food must be made of PE material, which is safer for the human body
The specific differences can mainly depend on the feel
PE is softer and stronger, so it won’t wrinkle even when kneaded