Jiangyin vacuum bag vacuum bag manufacturers

First, the different chemical structure PE and PP vacuum bag vacuum bag. I.e. polyethylene PE, a simple structure of the polymer, the repeating -CH2- units connected together, the polyethylene is polymerized by addition of ethylene. PP means polypropylene, is a semi-crystalline thermoplastics. Two, PE and PP vacuum bag vacuum bag different characteristics. Polyethylene odorless, non-toxic, feel like wax, excellent low temperature performance, low temperature vacuum bag PE up to -70 ~ -100 ℃. Polyethylene chemical stability, can tolerate most acid-base erosion, room temperature, soluble in common solvents, water absorption, excellent electrical insulation properties, but poor thermal aging resistance of polyethylene. Polypropylene has a high impact resistance, mechanical properties of tough, resistant to many organic solvents and acid corrosion