No.65438 +0: PET polyethylene terephthalate, commonly used in mineral water bottles and carbonated beverage bottles. When the temperature reaches 70℃, it is easy to deform and some substances harmful to human body melt. This kind of bottle can't be put in the sun in the car, and it can't contain alcohol, oil and other substances. This material can only be used once. Repeated use will precipitate DEHP, which is harmful to human body. PET is a polyester material, and the lowest grade is 1 (generally disposable). If it is above 3, it is generally used for repetitive articles or edible utensils.
Second place: white medicine bottles, cleaning products and bath products commonly used in HDPE. Don't use it as a cup, or as a storage container for other items. If the cleaning is not thorough, don't recycle it.
No.3: PVC and PVC ordinary raincoats, building materials and plastics.
The larger the number of plastic containers, the safer it is. The number is only convenient for recycling. Only HDPE2 and PP5 raw materials are resistant to high temperature, but it does not mean that they will not encounter corrosive substances (heat, acid and oil) and will not produce toxic substances. If you must use it, the 2 nd, 4 th and 5 th are safer. Although the 5 th can be heated. But no matter what kind of plastic container, it should not be put into food and then heated to avoid producing toxic substances.