What Is The Meaning Of The Number Of The Bottom Of The Plastic Water Cup?

- Sep 15, 2018-

Digital indication of bottom of plastic water cup

1 PET polyethylene glycol terephthalate

Common mineral water bottles, carbonated beverage bottles and so on. Heat resistance to 70 degrees is easy to deform, there are harmful substances to melt. After 1 months of plastic products, 10 months later, the carcinogen DEHP may be released. You can't sit in the car in the sun; do not drink liquor, oil and other substances.

2 HDPE high density polyethylene

Common white bottles, cleaning products, bath products. Do not use it as a water cup or as a storage container for other items. Cleaning is not thorough, do not recycle.


Common raincoats, building materials, plastic films, plastic boxes, etc. Good plasticity, low price, so the use is very common, only heat-resistant 81 degrees C. High temperature is prone to bad substances produced, rarely used in food packaging. It is difficult to wash and residue. Do not recycle. If you do not buy drinks,

No. 4 PE polyethylene

Common plastic wrap, plastic film and so on. Harmful substances are produced in high temperature. Toxic substances may cause breast cancer, congenital defects of newborns and other diseases when they enter the body with food. Keep the plastic wrap away from the microwave oven.

No. 5 polypropylene PP

Common soybean milk bottles, yogurt bottles, fruit juice bottles, microwave oven lunch boxes. The melting point is as high as 167 C. It is the only plastic box that can be put into the microwave oven and reused after careful cleaning. It should be noted that some microwave oven lunch boxes are made of No. 5 PP, but the lid of the box is made of No. 1 PE. Because PE can not withstand high temperature, it can not be put into the microwave oven with the box.

6 PS polystyrene

Common bowl filled instant noodle box and snack box. You can't put it in a microwave oven to avoid chemicals coming out because of the high temperature. Acid loading (such as Liu Chengzhi) and alkaline substances will decompose carcinogens. Avoid eating hot food in a snack box. Don't cook instant noodles in a microwave oven.

7 PC other classes

Common kettle, space cup, bottle. Department stores often use cups like this as a gift. It is easy to release toxic bisphenol A, which is harmful to the human body. Do not heat when used, and do not bask in the sun.