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Recycled polyester, how much do you know?

Recycled polyester, how much do you know?

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  • Time of issue:2022-01-14
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(Summary description)Status of Recycled Polyester Orders

At present, there are many customers who inquire about recycled polyester fabrics. Especially for some European orders, they all want to change regular polyester to recycled polyester. Under this trend, we also applied for the certificate of recycled materials last year and renewed this certificate again this year. We mainly use wool fabrics, so the recycled materials mainly refer to recycled wool and recycled polyester fabrics.

Recycled polyester, how much do you know?

(Summary description)Status of Recycled Polyester Orders

At present, there are many customers who inquire about recycled polyester fabrics. Especially for some European orders, they all want to change regular polyester to recycled polyester. Under this trend, we also applied for the certificate of recycled materials last year and renewed this certificate again this year. We mainly use wool fabrics, so the recycled materials mainly refer to recycled wool and recycled polyester fabrics.

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2022-01-14
  • Views:0
Information

Status of recycled polyester orders

At present, there are many customers who inquire about recycled polyester fabrics. Especially for some European orders, they all want to change regular polyester to recycled polyester. Under this trend, we also applied for the certificate of recycled materials last year and renewed this certificate again this year. We mainly use wool fabrics, so the recycled materials mainly refer to recycled wool and recycled polyester fabrics.

Recycled fiber subverts the traditional source of raw materials, uses local materials, comprehensively utilizes waste resources, gives fibers "second life", and produces new functional fibers that are comparable to the original quality.

Characteristics of recycled polyester

Recycled polyester fibers with good quality are produced through special polymerization spinning technology, which can realize the diversity of polymers on the premise of ensuring the same quality as virgin polyester, and make high F number, fine denier, special A variety of high-performance fibers such as special-shaped sections. For example, the special-shaped yarn WAVERON, whose unique flat section can be made into a new material with UV resistance, wind and water resistance, etc.; the triangular special-shaped fat and thin yarn CORTICO, the fine holes on the surface of the yarn can diffuse light and apply it to the fabric. Not only can it have the natural appearance of linen-like, but also have the physical properties of cotton-like; the special-shaped yarn CALCULO has a highly special-shaped cross-section and a cross-spiral shape, which can be made into a light and dry fabric that absorbs sweat and dries quickly.

At present, the consumption of chemical fiber textiles and plastic beverage bottles in my country is very high. The recycling of waste textiles can not only reduce environmental pollution, but also turn waste into treasure.

Regenerated nylon fiber, also known as nylon regrind, is generally produced by smelting and granulating nylon yarn, nylon yarn or nylon cloth. It has good wear resistance, heat resistance, oil resistance and chemical resistance. It reduces the water absorption rate and shrinkage rate of raw materials, and has excellent dimensional stability and excellent mechanical strength.

The production process of recycled polyester

There are generally two ways to manufacture recycled fiber, one is called physical recycling production method, and the other is called chemical recycling production method.

The physical recycling production method refers to the reprocessing process of waste polyester. The recycled materials such as bottle material and polyester waste silk are directly spun to produce short fibers by crushing, melting, purification or modified granulation. The mechanical properties of the product are poor. Some are difficult to meet textile standards and are generally used for fillers or industrial purposes, but this method is relatively simple to produce and has low cost.

The chemical recycling production method refers to the use of the reversibility of the condensation ester process of polyester polycondensates. The recycled polyester is depolymerized by chemical methods to form smaller molecules, intermediates or directly converted into monomers, and then polycondensed into High-quality fiber-grade polyester chips are used for spinning. This method has high process requirements and is mostly used for high-value polymer materials. It uses the raw material value of waste textiles and can achieve complete recycling. The main methods are: Methanol dissolution method, glycol alcoholysis method, hydrolysis method and supercritical depolymerization method.

Although the chemical method is completely recycled and of good quality, it can replace virgin polyester in an all-round way, but due to its short-term economic benefits, raw material supply and processing technology limitations, the speed of chemical method development is still relatively slow. At present, many domestic PET bottle flakes are recycled through physical methods.

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