This material is used in pots, cups, baby bottles, etc., which is safe and resistant to falling, but not high temperature. It is harmless to drink cold water, but if you drink hot water, it will produce harmful substances when heated. Therefore, everyone must pay more attention when using AS plastic cups.
In addition to the high temperature resistance of PP cups, there are TRITAN (Eastman PCTG, USA) and ECOZEN (SK, Korea). These two cups are environmentally friendly, BPA-free, durable, and have the same transparency and feel as PC, but the price is relatively high.
The meaning of the number at the bottom of the cup
"1"-pet (polyethylene terephthalate)
It is more common in mineral water bottles and beverage bottles. This material is heat-resistant to 70℃, and can be filled with water at room temperature for a short time, not with acid-base drinks or high-temperature liquids, and it is not suitable for exposure, otherwise it will produce toxic substances harmful to human body.
"5"-PP (polypropylene)
PP plastic water cup is made of polypropylene, which has good thermal stability and insulation, is safe and harmless to human body. The product can be sterilized at the temperature above 100℃, and it will not deform at 150℃ without external force, and there is no pressure when it is filled with boiling water.
"58"-PC (polycarbonate)
Commonly used in kettles, space cups and baby bottles, department stores often use water cups made of this material as gifts. However, the cup made of this material is generally not resistant to high temperature. If it is heated or in an acid or alkaline environment, it is easy to release the toxic substance bisphenol A(BPA), so do not use it to hold hot water, and it is best to use warm water for cleaning.
"6"-PS (polystyrene)
Plastic cups made of PS material are particularly brittle and have low temperature resistance, and cannot be used in high temperature, strong acid and strong alkali environments.
The above contents refer to People's Daily Online-Health Secret of Plastic Water Cup? Glass cups are the first choice for drinking cups.