The physical recovery method of PET plastic bottle is relatively simple, mainly dry and granulate the cleaned waste PET plastic bottle. The waste PET plastic bottle was cut into pieces, HDPE, aluminum, paper and adhesive were separated from pet, and then pet fragments were washed, dried and granulated.
The impurities on the waste PET plastic bottle, such as the cap, the bottom of the cap and the label, are separated by mechanical method, and then washed, dried and granulated.
The recycled pellets can not be used in the occasion of direct contact with food, but can be used in the middle layer of three-layer PET plastic bottle, and then made into carbonated beverage bottle.
After physical or chemical recovery, pet pellets can be used in the following ways:
1. The recycled pellets can not be used in the occasion of direct contact with food, but can be used in the middle layer of three-layer PET plastic bottle, and then made into carbonated beverage bottle.
2. The regenerated PET material can be used for spinning to make fiber, used for sleeping bag, mattress, pillow core, felt, etc.
3. The recycled PET reinforced by glass fiber has good heat resistance and mechanical strength. It can be used to make automobile parts, such as heat-resistant automobile wheelhouse.
4. Blending modification, recycled PET material can be blended with other polymers to produce various modified materials, such as blending with PE, PET Blends with improved impact properties can be obtained; if a little polypropylene is added, the size stability of the blends can be significantly improved. Because the polarity of PE and pet is quite different, compatibility treatment is needed during blending, and the compatibility is generally improved by grafting modification of polyolefin.