Driven by the dual-carbon policy, green and low-carbon has become the core orientation of the development of the chemical fiber industry. Recycled polyester (rPET) relies on the advantages of resource recycling, and the market demand continues to rise. For chemical fiber production companies, mastering efficient and environmentally friendly recycled polyester production technology and expanding multiple application scenarios have become the key to improving core competitiveness. This article dismantles the entire chain optimization path for green production of recycled polyester, from raw material processing, production technology to application implementation.

Raw material recovery and sorting are the basis for green production of recycled polyester.

The current mainstream source of raw materials is waste PET plastic bottles, whose recycling and sorting require multiple processes such as crushing, cleaning, drying, and sorting. Enterprises can introduce intelligent sorting equipment to accurately separate impurities of different materials through infrared recognition technology to improve the purity of raw materials; the cleaning process uses low-temperature ultrasonic cleaning technology to replace traditional high-temperature water washing, which can not only reduce water consumption, but also reduce energy consumption, and is in line with the concept of green production. High-quality raw material processing can increase the product qualification rate of subsequent spinning processes by more than 20%.

Clean production technology is the core of improving the quality of recycled polyester.

In the melt spinning process, it is recommended to use an energy-saving screw extruder with a precise temperature control system to avoid the production of harmful substances due to local overheating of raw materials; at the same time, introduce waste gas treatment equipment to adsorb and purify trace amounts of VOCs generated during the production process to achieve emission standards. In addition, by adjusting the spinning speed and cooling wind speed through process optimization, the strength and toughness of recycled polyester fiber can be improved, the quality gap with virgin polyester can be narrowed, and the demand for high-end applications can be met.

The expansion of multiple application scenarios is the key to tapping market potential.

Regenerated polyester fiber has been widely used in clothing home textiles, geotechnical materials, filling materials and other fields: in the clothing field, recycled polyester fabrics can be produced and used to make sportswear and casual wear, which have both breathable and wear-resistant properties; in the field of geotechnical engineering, recycled polyester short fibers can be made into geotextiles, which are used for roadbed reinforcement and soil and water conservation, and have the advantages of anti-aging and anti-corrosion; in the filling field, hollow recycled polyester fibers can be used for pillows and mattress fillings, with excellent warmth retention and resilience properties.

For recycled polyester manufacturers, the upgrade of green production technology and the expansion of application scenarios complement each other. In the future, with the continuous iteration of technology, recycled polyester will achieve breakthroughs in more high-end fields. If you have any questions about the optimization of the recycled polyester production process and the development of application scenarios, please leave a message in the comment area for communication.