Wholesale Colorful PP Plastic Rolls at Cheap Factory Price

The pp material is polypropylene. Polypropylene is a non-toxic, odorless and tasteless milky white highly crystalline polymer with a density of only 0.90–“0.91g/cm3, which is currently one of the lightest varieties of all plastics . It is particularly stable to water, with a water absorption rate of only 0.01% and a molecular weight of about 80,000 to 150,000. The moldability is good, but because of the large shrinkage rate (1%~2.5%), thick-walled products are easy to dent. For some parts with high dimensional accuracy, it is difficult to meet the requirements, and the surface of the products has good gloss.
 

Polypropylene, a kind of plastic, is a linear polymer with high density, no side chains, and high crystallinity. It has excellent comprehensive properties. Common products: basins, barrels, furniture, films, woven bags, bottle caps, car bumpers, etc.
pp plastic, chemical name: polypropylene English name: Polypropylene (abbreviated as pp) Specific gravity: 0.9-0.91 g/cm3 Molding shrinkage: 1.0-2.5% Molding temperature: 160-220℃ PP is a crystalline polymer, PP is Comprehensive performance is better than PE material. PP products have light weight, good toughness, and good chemical resistance. Disadvantages of PP: low dimensional accuracy, insufficient rigidity, poor weather resistance, it has post-shrinkage phenomenon, after demolding, it is easy to age, become brittle, and easy to deform. In daily life, the commonly used fresh-keeping box is made of PP material.