What is the difference between pe bag and pp bag?

1. The chemical structure of pe plastic bag and PP vacuum bag is different. A polymer with a simple structure is connected by repeating units. PE stands for polyethylene. Polyethylene is formed by the addition polymerization of ethylene. PP stands for polypropylene.　　2, PE bags and PP bags have different application ranges. Polyethylene is widely used in the manufacture of vacuum bags, plastic films, milk barrels and other products. Polypropylene is widely used in the industry. It is often used to make various tapes for the flexible packaging industries such as food and beverages. After drying clothes or quilts are put into a vacuum bag, the bag mouth is sealed with a sliding sheet and then used Vacuum cleaner or suction pump sucks the air, after being evacuated, the volume is only 1/3 of the original volume to expand the storage space. The waterproof PE bag makes your home more tidy and tidy. After compression, the air will not flow back, so that the inside of the bag can be maintained in a sub-vacuum state and the air tightness is good. The quality is superior and it can be reused and environmentally friendly.　　3. Excellent low temperature resistance, PE bags and PP bags have different characteristics. Polyethylene is odorless, non-toxic, feels like wax, has good chemical stability, can endure most acid and alkali corrosion, is insoluble in general solvents at room temperature, has low water absorption, and has excellent electrical insulation properties, but polyethylene has poor heat aging resistance . Polypropylene has high impact resistance, strong mechanical properties, and can resist a variety of organic solvents and acid and alkali corrosion. 　　 Label: pe waterproof bag