More and more customers choose vacuum packaging as a packaging project, in which vacuum bag PE and PP vacuum bags are an important part of vacuum bag products, which provides great convenience for people's daily life and industrial production. Today we take a look What do they have in common. What is the difference?
Different uses: Polyethylene (PE) is widely used in the manufacture of vacuum bags, plastic films, milk buckets, etc. Polypropylene (nylon) is widely used in industry. The most rare polymer materials are used to make various adhesive tapes. It has made great contributions to the soft packaging industry such as food and beverage.
The chemical structure is different: polyethylene is polyethylene, first. A simple polymer containing O. A repeating CH2 unit, which is an addition of ethylene. pp refers to a semi-crystalline thermoplastic.
Its characteristics are different: polyethylene is odorless, non-toxic, feels like wax, second. Good low temperature resistance, PE vacuum bag minimum temperature can reach 70~100 degrees. Polyethylene has good chemical stability and can withstand large Part of acid-base erosion, insoluble in common solvents at room temperature, low water absorption, good electrical insulation properties, but poor heat resistance of polyethylene. Polypropylene has high impact resistance, strong mechanical properties, resistance to various organic solvents and acid-base corrosion.
