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How to turn PET water bottles into pellets

Views: 327 Author: Site Editor Publish Time: 2024-05-24 Origin: Site

What is PET water bottle

PET water bottles are water bottles made from the plastic material Polyethylene terephthalate (PET), a widely used thermoplastic polyester with excellent transparency, heat resistance, chemical resistance and mechanical strength. Because of its non-toxic, odorless, good health and safety and good processability, PET is widely used in food, beverage and other industries packaging, especially for the production of mineral water bottles, juice bottles, carbonated beverage bottles and so on.


Processing Flow


The collected PET water bottles are sorted according to color, impurities and other factors. Because PET water bottles of different colors may contain different additives, classification is beneficial for subsequent processing.


The sorted PET water bottles are crushed to turn them into small particles or fragments. This step is usually done by mechanical equipment such as blade crushers or rough grinders.


The crushed PET pellets are washed to remove impurities, oils, labels, etc. from them. There are two main types of washing, physical and chemical, which usually require the use of warm water and detergents.


The washed PET pellets are dried to remove moisture. This step usually requires the use of hot air drying equipment.


The dried PET pellets are melted to turn them into a liquid. This step requires the use of heating equipment, such as a melting furnace.


The melted PET liquid is passed through filtration and a die head to form new PET pellets. These pellets can be used again to make new plastic products. The two main types of granulation processing are single screw granulators and twin screw granulators.


The PET pellets after pelletizing treatment are reprocessed, which can be done by thermoplastic processing methods, such as injection molding and extrusion, to make new PET products, such as beverage bottles and food containers.

Value of Pelletizing

Environmental value: PET water bottle pelletizing is an important part of resource recycling, which can transform PET bottles originally regarded as waste into valuable renewable resources. This treatment helps to reduce the pollution of waste plastics to the environment and the damage of plastic waste to soil, water and ecosystems, thus promoting environmental protection and sustainable development.

Economic value: PET pellets after pelletizing treatment can be used again to make various plastic products, such as fibers, bottles, packaging materials and so on. This not only creates economic value for the recycling industry, but also reduces the production cost of new plastics and improves economic efficiency.


Related Machines

PET bottle pelletizing line