According to market research, fewer and fewer people use plastic cups to drink water now, because plastic plasticizers often contain toxic chemicals. When a plastic cup is used in hot water, toxic chemicals are easily diluted to water, and the internal microstructure of the plastic has a lot of pores, which hide the dirt, and the bacteria can be bred easily. Therefore, when choosing plastic cups, we must choose the water cups made of edible grade plastics that meet the national standards.
In general, when we buy a cup, the label is usually attached to the bottom of the cup, so we must buy it clearly when we buy it. The following seven Ding Yue gives us a few lists.
The bottom of the plastic cup (bottle) will have a triangular recovery logo with an arrow, and the glass is made of what material. We can know through the number in this logo.
"1" - PET (polyethylene terephthalate)
The material is more common in mineral water bottle and beverage bottle. This material is heat-resistant to 70 degrees C, can be installed in a short time and often warm water, can not install acid alkali beverage or high temperature liquid, and it should not be insoled, otherwise it will produce harmful toxic substances to the human body.
"5" - PP (polypropylene)
The PP plastic water cup uses polypropylene, it has good thermal stability and insulation, safety, harmless to human body. Products can be sterilized at temperatures above 100 C, and will not deform at 150 C without external force.
"58" - PC (polycarbonate)
Commonly used in kettle, space cup, bottle, department stores commonly used such material cup as a gift. But generally this material cup is not resistant to high temperature, if heated or in the acid, alkaline environment, it is easy to release toxic substances bisphenol A (BPA), so do not use it hot water, cleaning also the best use of warm water.
"6" - PS (polystyrene)
The plastic cup made of PS material is especially crisp and low in temperature. It can not be used in high temperature, strong acid and strong alkali environment.
"7" - AS (acrylonitrile styrene resin), PC material and others.
It is used for kettle, cup, bottle and so on. It has high safety and resistance to fall, but it is not resistant to high temperature. It is harmless to drink cold water, but when hot water is installed, it is heated to produce harmful substances to human body. So everyone must pay more attention when using AS plastic cups.