National hotline
+86-519-86255607
The triangle sign at the bottom of the plastic product is equivalent to the "ID card" of the product. The triangle composed of three arrows means "recyclable". In addition, the number in the triangle, such as "1", is a number sign. There are 1 to 7 plastic numerals, each of which represents a kind of plastic material, mainly for the convenience of recycling and understanding of its use conditions.
The bottom sign of the plastic lunch box is the environmental protection cycle sign, with numbers ranging from 1-7. The specific meaning is:
1: PET (polyethylene terephthalate), a container made of this material, is a common plastic bottle for holding soda, also known as "Baote bottle"
2: HDPE (high-density polyethylene), containers for detergent, shampoo, bath cream, edible oil, pesticide, etc. are mostly made of HDPE. The containers are mostly opaque and feel like wax.
3: PVC (polyvinyl chloride) is widely used to manufacture water pipes, raincoats, schoolbags, building materials, plastic films, plastic boxes and other utensils.
4: LDPE (low density polyethylene), plastic bags that can be seen everywhere are mostly made of LDPE.
5: PP (Polypropylene) is mainly used to make water buckets, garbage cans, baskets, baskets and food containers for microwave ovens.
6: PS (polystyrene), due to its low water absorption, is mainly used to make building materials, toys, stationery, rollers, and cup boxes or disposable tableware for drinks in fast food stores.
7: Others. PC is the abbreviation of polycarbonate.
The reuse mark marked with "5" is mainly made of pp. The plastic container made of this material has good air permeability, high heat resistance, high impact resistance, strong mechanical properties, and resistance to a variety of organic solvents and acid and alkali corrosion. It is mainly used for microwave oven lunch boxes, milk bottles and other plastic containers. The plastic container made of pp material can be put into the microwave oven for heating, and can be reused after careful cleaning. However, some microwave oven lunch boxes are made of No. 5 pp, but the box covers are made of No. 1 PE, so they cannot be put into the microwave oven together with the box.