Economic And Environmental Benefits Of Recycled Polyester Fibers Are Promising.

< p > in recent years, with the acceleration of the upgrading of < strong > a href= "http://www.91se91.com/news/index_f.asp" > clothing < /a > /strong > industry, the number of rejected textiles is increasing day by day, especially plastic bottles entering the bottled market, so that fiber and plastic wastes are growing without interruption.

Synthetic fiber plays an important role in the textile industry. In particular, the environmental pollution caused by all kinds of waste polyester products and polyester wastes is becoming more and more serious as it brings scientific and technological progress and comfort to the production and life of mankind. Therefore, how to turn these wastes into treasure has always been a hot topic in the world.

Vigorously developing waste recycling has become the key technology of textile and plastics industry's sustainable development.

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< p > the industry usually defines the fibers produced after recycling or reusing waste as regenerated fibers.

As far as varieties are concerned, recycled fibers can be divided into two main categories: regenerated cellulose fiber and regenerated synthetic fiber.

Viscose fiber is the earliest regenerated fiber. After that, new regenerated cellulose fibers, such as Lyocell fiber, cellulose carbamate fiber, superconducting viscose fiber, kapok fiber and bamboo fiber, appeared.

Polyester fiber accounts for about 70% of synthetic fiber, and the application of polyester in the bottle making industry is expanding rapidly. Therefore, regenerated synthetic fiber is mainly regenerated polyester fiber.

China's regenerated polyester industry has a history of nearly 30 years.

In recent years, China's regenerated fiber industry has developed rapidly. In 2010, China's regenerated polyester fiber production capacity reached 6 million 200 thousand tons / year, and has become the world's largest producer of recycled polyester fiber.

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< p > regeneration > strong > a href= "http://cailiao.sjfzxm.com/Matertial/show/default.aspx" > polyester fiber < /a > /strong > there are mainly two kinds of technological routes: one is to use bottle material, polyester waste silk and other recycled materials to be directly spun through granulating and granulating, that is, physical recovery method; the two is to make use of polyester polycondensate in the process of condensation polymerization to make the recycled polyester depolymerized to form monomer and then to polymerized into high-quality fiber grade polyester chip for spinning, which is called chemical recovery production method.

Due to the complex source of raw materials, the regenerated polyester fiber is often different in color, purity and viscosity, and contains a large amount of impurities, resulting in large difference in the performance of raw materials. In the past, it was mainly to produce common short fiber.

In recent years, in order to produce high quality regenerated polyester fiber, many key technologies have been adopted in the process and equipment for the characteristics of recycled polyester raw materials.

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< p > recycled fiber can be used directly as spinning raw material to make a variety of uses < strong > a href= "http://cailiao.sjfzxm.com/Matertial/show/machine_index.aspx" > textile > /a > /strong > for example, recycled fiber can be used for ring spinning, Detlef spinning, airstream spinning and so on to spin low count yarn or fancy yarn.

The yarn can be woven into plain woven fabric, household fabric, coarse fabric, wipe the automobile dishcloth and all kinds of new fabrics, such as luggage cloth, foreskin cloth, coat, swimsuit, ski suit, water-soluble jacket, knitted T-shirt and so on.

Nonwoven fabrics made from recycled fibers can be used as interior decoration materials for automobiles.

Needle punched nonwovens can also be used as geotextiles.

There are many manufacturers of nonwoven geotextiles in China, but the main problem is that the cost of raw materials is high and it is difficult to popularize and apply them in large areas.

The recycled polyester fiber needled fabric is cheap and competitive in price.

Therefore, recycled polyester fiber can promote the wide application of our land textile.

At present, Japan has more mature experience in the use of recycled fiber geotextiles.

In short, the application range of recycled polyester fiber nonwovens is very extensive. In addition to the above purposes, recycled polyester fibers can also be used in building, railway and highway waterproofing materials, planting belts or soilless cultivation, automotive interior materials, furniture and other fields.

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< p > affected by the increasing tension of crude oil resources, the price of polyester fiber is basically < strong > a href= "http://cailiao.sjfzxm.com/Matertial/show/material.aspx" > material < /a > /strong > the price continues to rise, which provides new opportunities and challenges for the development of recycled polyester fiber.

On the one hand, the price of raw materials for bottle flakes is affected by the environment of raw materials market, and prices are rising correspondingly. On the other hand, the prices of industrial necessities such as water, electricity and coal are getting higher and higher, and the cost of labor has risen sharply, which has seriously squeezed the profit margins of the chemical fiber industry. It has put forward higher requirements for regenerated polyester fiber production enterprises, that is, keeping pace with the development frontier of new technologies, improving the preparation process of bottle grade polyester raw materials in real time, speeding up the adjustment of product structure, and expanding the application fields of recycled polyester fibers, leading them to move from the simple and extensive nonwoven areas to high-end products.

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< p > with the continuous increase of polyester consumption and the continuous enhancement of people's environmental awareness, the problem of recycling polyester wastes has been paid more and more attention. To achieve high efficiency and low cost recovery, we should start with the characteristics of waste materials, and effectively combine the cost of recovery with the value of the final product, so that we can really achieve value for money.

At present, the use of polyester waste to produce recycled polyester fiber can reduce costs and improve economic efficiency, and is of great significance for the sustainable development of chemical fiber and plastics industry.

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