Pp is a kind of resin and a linear polymer with high density, no side chain and high crystallinity. It has good comprehensive properties, non-toxic, tasteless, good heat resistance and low density. Secondly, pp materials can also be used as food packaging and daily necessities, such as pots, barrels, furniture, films, woven bags, bottle caps, clothing, plastic wrap, medicine packaging, blankets and so on. It can be seen that pp material is harmless to human body.
Purchasing method of polypropylene material
1, raw materials. Pp products are generally made of pp, but many claimed pp materials are not pure pp, so when purchasing, it should be noted that food-grade PP materials that are harmless to human body are the best.
2. appearance. Good pp materials are generally transparent or translucent materials, with shiny appearance, beautiful design and no burr, which can be seen through the appearance.
3. Durability. Heat resistance is an excellent characteristic of pp material. The good heat resistance of pp material is very high, and it will not deform in high temperature water, and can even be disinfected in boiling water. In addition, the impact resistance of pp material is also very high, and it is not easy to break under heavy pressure or impact, leaving no scratches.