There are many kinds of materials for food plastic packaging bags, such as polyethylene, polypropylene, nylon and polyester. As a consumer, how to distinguish the material of food plastic packaging bags? Today, Shijiazhuang Zeyi Packaging will give you a brief introduction.
Some food plastic packaging bags will have a “△” sign. The numbers inside represent the main components of plastic packaging. The plastic code is composed of the corresponding abbreviation code. The figure is an equilateral triangle with three arrows, which represents the material category is plastic. The plastic code is a number that is a combination of 0 and an Arabic numeral sequence number. It is located in the center of the figure and represents the difference. The plastic abbreviation code is located below the graphic:
1. Polyester: 01 PET
2. High density polyethylene: 02 HDPE
3. Polyvinyl chloride: 03 PVC
4. Low density polyethylene: 04 LDPE
5. Polypropylene: 05 PP
6. Polystyrene: 06 PS
7. Other plastic code: 07 Others
Of course, some food plastic packaging bags do not have this mark, so you can touch it. PE food plastic packaging bags are softer, and PP food plastic packaging bags are harder.