How do you understand the level of engineering plastics?
1, PET (polyethylene terephthalate): at present, the general mineral water, carbonated drinks and functional beverage bottles are used in this material. Heat resistant to 70 degrees, easy to deformation.
LDPE (low density polyethylene): common plastic film, plastic film and so on. High temperature will produce harmful substances, plastic film into the microwave.
PVC (polyvinyl chloride): rarely used in food packaging. Difficult to clean, easy to keep, do not recycle, if you buy drinks, do not buy.
HDPE (HDPE): common white bottles, cleaning products, bath products. High temperature resistant, but not easy to clean, easy to breed bacteria, do not recycle.
Representative PS (polystyrene): This is used to make bowls, instant noodles boxes, foam snack box material, heat resistant, cold resistant, but can not be put into the microwave oven. Can not be used to hold strong acids (such as Liu Chengzhi), strong alkaline substances.
