Application Areas Of PET
Packaging field: the most common of which are packaging bottles for liquid beverages such as mineral water, carbonated beverages, fruit juice, and tea drinks, accounting for about 70% of the global liquid beverage packaging market share.
Textile field: PET itself was originally used for synthetic fibers (commonly known as polyester/polyester fibers)
Other engineering and daily use fields: PET can be processed into engineering plastic components for automotive interiors and electronic and electrical components.
Plastic sheets and profiles can also be made, processed into outdoor tables and chairs, decorative sheets, and various daily necessities such as stationery, storage boxes, and phone cases.
Some special modified PET can also be used to produce industrial products such as packing belts, fishing nets, and packaging films.
Recycling Process And Technology
Cleaning and crushing line + twin-screw extruder（L/D 40：1 or 44:1）+ water cooling and cutting system, to produce PET particles for easy secondary use.
This process can efficiently remove impurities, stabilize melt quality, ensure uniform particle size, and a moisture content of less than 50ppm, meeting the stringent requirements of downstream injection molding and sheet extrusion.
At the same time, the vacuum devolatilization section can deeply remove moisture and low molecular weight volatiles, avoiding the decrease in intrinsic viscosity caused by high-temperature degradation.
Combined with an online melt filtration system, it can intercept over 99.8% of micron-level impurities.
- Is manual sorting required before cleaning?
Manual operation is required: bottles made of materials such as PP, PE, PET, etc., with different waste sources need to be collected together, and different materials need to be selected and classified.
PET drinking water bottle caps, commonly made of PP, usually require manual removal.
- What should be noted during the extrusion process?
To prevent PET particles from having bubbles and yellowing, it is recommended to choose a twin-screw and an effective vacuum system.
- Can food-grade PET still be used for food after recycling?
No, food-grade bottles are commonly used in the production of packaging materials after being recycled into granules.
For example: packing straps, brooms, industrial product packaging, and so on.
The Advantages Of PET Twin-screw Recycling
- Reduce bubbles and yellowing of particles to maintain better appearance and performance
- Color masterbatch can be added through side feeding to change the color of granular products
- Additives can be added through side feeding to adjust the toughness and strength of the particles, meeting the performance requirements of the next product.
- The new PET powder can also be processed into pellets using this machine, saving equipment costs
- L/D：40~44:1， Maintain independent temperature control in zones 10 or 11 to significantly improve product quality
Don’t let PET bottles “wander” aimlessly—give them a chance to be reborn! Recycling 1 ton of PET bottles can save 6 tons of oil.
Recycled PET can be used for packaging, polyester fibers, films, electronic and electrical components, and automotive parts. Join the effort and make the Earth greener!