These kinds of plastics can be used in food and tableware, and polypropylene and polyethylene have the least harm to human body. According to the requirements of use, there is no best one. For example, baby bottles can't use PE because the heat-resistant temperature is not enough. At present, polycarbonate is basically used as baby bottle, but some people say that it is not good for babies to contain trace bisphenol A. ?
Plastic material characteristics
1, chemical resistance.
2, shiny, partially transparent or translucent.
3. Most of them are good insulators.
4, light and strong.
5, easy processing, mass production and low price.
6, a wide range of uses, multiple functions, easy to color, and local high temperature resistance.