China PET Bottle Recycling Line Manufacturers

1. Basic overview

The production process of waste PET bottles plastic washing system has been developed for more than 20 years. The key to recovering the original material from waste plastics is the removal rate of impurities. The content of impurities includes pollutants in the environment, other materials and other materials attached to the original plastic products. Color homogeneity. The higher the purity, the more high-quality downstream products can be produced, and the lower the manufacturing cost and production loss of its downstream products. The pure recycled bottle flakes with total impurities below 100ppm generate the greatest production value for the production of high-grade downstream product raw materials. How to achieve this impurity removal rate economically and effectively is the central goal of the process designer. In addition to the purity of recycled flakes, reasonable production cost of flakes, process control automation to stabilize the quality of flakes, production automation to reduce the number of workers, clean production, and environmental governance are all central issues that should be considered in process design.

2. Detailed process

First,  unpack the PET bottle bricks. After unpacking, according to the specific conditions of the materials, see if it is necessary to remove the impurities before stripping. Most domestic bottles are labelled (except for oil bottle labeling). The labeling machine can be used to efficiently remove the label of the bottle body. After de-marking, the PET bottles enter the sorting platform to remove other impurities, variegated bottles and metals in the material. Then it is transported to the crusher for crushing. After crushing, the bottle cap (PP plastic) and the bottle flakes are separated. The water tank can effectively separate the bottle cap from the bottle flakes. The bottle cap is made of floating plastic and the bottle flakes are sinking. Water plastic, after separating the bottle cap, enter the hot washing machine for hot washing, put a certain proportion of caustic soda or cleaning agent, effectively remove the dirt, oil and other impurities on the bottle flakes, the high-temperature boiled bottle flakes are washed by high-speed friction , Remove the attachments sticking to the surface of the bottle flakes, and then go through the washing and rinsing stage to rinse off the caustic soda and other sundries on the bottle flakes. At this point, the bottle flakes have been cleaned, and finally dehydrated and packaged.