As the living environment of the human earth is getting worse and worse, countries around the world have taken environmental protection to an extremely important position, and the printing and dyeing and post-treatment of various textile materials is a great source of pollution. Therefore, the coloring of the melt in the fiber is The trend of spinning, first, the use of cationic raw materials, and dyes due to the action of ions to make dyeing easier, reduce pollution, the second is to directly add a variety of masterbatch, so that the fiber is processed to color, reduce the dyeing process, color fast It is also highly used and is widely used in various fabrics.

PET, scientific name: polyethylene terephthalate, Chinese called polyester, commonly known as polyester resin, polyester chips, it is a linear thermoplastic. PET is widely used in water and beverage packaging because of its light weight, high strength, hygiene, barrier preservation, weathering resistance, aging and ease of use.
The recycling of PET plastic bottles can not only solve environmental problems, but also realize resource recycling and alleviate the contradiction of insufficient PET raw materials in China. At present, the recycling rate of PET plastic bottles in China is almost 100%. The development of recycling technology is also very rapid.
The recycling of PET bottles is divided into physical recycling and chemical recycling. Among them, physical recovery accounts for the main part, PET bottle production is large, and bottle-grade PET has high viscosity, which is easy to use for degradation. These laid the foundation for the recycling of PET bottles.
The physical recovery process of PET bottles: firstly separate the PET bottle body from the cover, label, etc., then pulverize the PET bottle body, clean and decontaminate, and finally dry, the dried clean film can be processed according to the application or After modification, it is processed into various products.
Generally used for plastic packaging, fiber, glass fiber reinforcement, plastic modification, woven products, etc. In this way, the secondary utilization of the PET bottle is achieved.
Bottle to bottle recycling

After the PET bottle is used, its material properties are kept good. When the impurities and water are qualified, the PET bottle can be directly used for manufacturing and packaging plastic bottles such as liquid pesticides, engine oils and chemical reagents.
After the PET bottle has undergone physical changes, its hygiene will change. In China, it is generally not used directly in food packaging materials. In the United States and Europe, high-quality PET tablets can be directly reused in food packaging such as water and beverages.
In the recycling process, the PET material will degrade and the viscosity will be lost. If the chain extension or bulk viscosity-increasing technology is introduced during the processing, the bottle-to-bottle technology is more advantageous.
Spinning fiber

At present, the main purpose of cleaning and drying PET bottle tablets is to produce polyester staple fiber. The main reason is that the PET resin used as fiber has low intrinsic viscosity, and even if a small amount of molecules are hydrolyzed during processing. Or degradation, does not affect the spinning process to get the desired product.
Polyester staple fiber can be used to produce hollow materials such as garments, mattresses and plush toys, geotextiles, felt fabrics, carpets and other materials and products.
Recycled filament is the kind of the highest quality requirements for recycle PET Chips among recycled chemical fibers. With the continuous growth of the demand that more and more international brands replace the virgin filament to recycled filament, recycled filament is widely used in sports, leisure, home textile, outdoor and other fields, and the quality standard of recycled filament is more and more close to the quality level of original filament.
Polyester masterbatch: Polyester staple fiber products are mostly white, but they are often dyed when making garments. The use of PET flakes as color masterbatch is better than the new fiber grade PET resin slicing, because its intrinsic viscosity is slightly reduced during processing, which does not affect the dispersibility and additive effect of the color masterbatch, and utilizes the spinning process. The requirements are more obvious in terms of production costs.
Glass fiber reinforced material

PET is generally not directly injection molded, but it can be injection molded after being made into composite materials such as glass fiber reinforced, wood plastic, etc., and used to make various household appliances, automobiles, computers and other components.
The glass fiber reinforced recycled PET has good heat resistance and mechanical strength. For example, the heat-resistant automobile wheel cover has a thermal distortion temperature of 240 degrees, a flexural modulus of 9500 MPa, a bending strength of 214 MPa, and an impact strength of 15 kf/ M2.
Plastic woven bag, cloth
Recently, research and development work on processing plastic woven bags, straps and fabrics from PET flakes has been active, and processing technology and equipment have gradually matured. Entrepreneurs and experts who pay attention to this project in the industry have placed heavy burdens on this application. It is hoped that the application of PET bottle tablets in this field will promote the upgrading of woven products and open up a new era of woven products.