Talking About The Different Shrinkage Composite Polyester Fiber

As a kind of fiber produced by laminating, stretching, twisting and the like of similar or non-similar fibers, the development of different shrinkage and conforming polyester has greatly improved the simulation level of China's fiber, and its series of products are dried. Uniform, quantitative and fixed length, to ensure the flatness and shrinkage of the fabrics produced by downstream enterprises, as well as the semi-products of each process can be the same as above, so as to improve efficiency, reduce energy consumption and save costs.

One-step or two-step

At present, the different shrinkage-bonded polyester mainly adopts the one-step FDY/POY different shrinkage and lamination spinning technology, which has low equipment investment, short process flow, low production cost, high-speed production, stable product quality, and various components. Features any performance fit.

The progress of industrialization of such an advanced process technology is not a simple matter. In order to solve the problem of industrialization of one-step different shrinkage mixed fiber, Jiangsu Sergey Chemical Fiber Technology Co., Ltd. has been doing it for several years. Sergey Chairman Sun Derong told reporters that there is no problem in theoretical calculations, but the actual process, the skill level of the operator, the accuracy of the equipment, the temperature change and other factors all affect the progress of research and development. After more than two years of hard work, the original unimaginable product was finally made.

“We designed a one-step process of POY+FDY parallel spinning and high-speed lamination network multi-machine integration, which broke through the key technologies of fit point tension matching, precise shrinkage manipulation, high-speed multi-network, etc. Synchronous spinning, synchronous winding, double air duct side air blowing system, multi-head high-speed winding head and other key equipment. On this basis, the first evaluation of the product's different shrinkage performance test evaluation method, the study of one-step shrinkage The best fabric, dyeing and finishing technical conditions of mixed fiber, built a number of one-step shrinkage mixed fiber production line, and achieved large-scale production. It reduces labor, site and power consumption, water consumption, and adapts to low carbon economy The progress trend is in line with the national industrial policy." Sun Derong said.

Although the one-step production of the different shrinkage laminated polyester is currently the mainstream in the market, the two-step production of the product also has characteristics and advantages. Cui Li, director of new product development of Xinfengming Group Co., Ltd., told reporters that the speed of Xinfeng Mingping is generally 700~900m/min. The network pressure of different shrinkage fit wire can be adjusted according to customer requirements to meet different fabric weaving networks. Degree requirements; drafting multiples and qualitative temperature can also be adjusted to meet the different boiling water shrinkage requirements of customers; also can be customized according to customer requirements for a variety of semi-finished, finished, cationic hetero-contracting laminate fibers.

Whether it is a one-step or two-step process, the different shrink-fit polyester has excellent hiding performance, excellent coloring performance, high bulkiness and soft hand feeling, and because the fiber surface has many wire loops, Therefore, the extreme defects of the chemical fiber silk fabric are also removed. After finishing, you can make high-grade woolen fabric, spandex jersey, high-grade peach suede, woven linen, crystal hemp, chiffon, washed velvet, tribute, prince, etc. It is a T-shirt and thermal underwear. Ideal raw material.

Clear pattern and broad prospects

Different shrinkage and polyester as a new type of differential chemical fiber, its market development prospects are quite good. At present, some well-known large-scale chemical fiber companies in China have entered this field, such as Zhejiang Tongkun Group and Jiangsu Hengli Group. And other companies. On the one hand, enterprises can transform and produce new type of different shrinkage-bonding fibers through existing traditional equipment. On the other hand, they can cooperate with domestic textile machine manufacturers to develop special equipment for different shrinkage-bonding fibers to develop new types of different shrinkage-bonding fibers. Gradually make the different shrinkage fibers into an industrialized pattern, and apply it to more and more chemical fiber market segments, which is gradually accepted by the market.

The first breakthrough in the application and advancement of new chemical fiber in the field of fiber materials is the improvement and improvement of general chemical fiber, which makes it closer to natural fiber and easier to produce. It is expected that chemical fibers will retain the excellent properties of natural fibers while maintaining their high strength and uniformity. Therefore, high elasticity, easy coloring, moisture absorption, bulking, and improvement of the finish are the goals pursued by general chemical fiber deformation and modification. The future progress areas and patterns are as follows: high-shrinkage yarn is manufactured by using high elastic shrinkage technology. The low-shrinkage yarn is made by the sizing elongation technique, and the two is made into a super-double-shrinking multi-aliasing affixing wire, which is mostly used for thin velvet and new type of artificial silk fabric.

Development of three different (heterofiber, shaped, double shrink) polyester and multi-different polyester. Due to its heterogeneous, profiled, double-shrinkage and fine fineness, the tri-fibrous fiber is a good fabric for silk, jeanette, buckskin and wool-like fabrics. It is full of strength and comfortable to wear. It is the focus and direction of the development of differential chemical fiber in China.

Functionalization of double shrink polysilicon. As a low-shrinkage component, the functional fiber is applied to the surface of the fabric after boiling water treatment, covering, fireproofing, and bacteriostatic.

Curlization of low shrinkage component filaments. At present, although a large number of coils appear after the double shrinkage and multi-folding of the boiling water treatment, the shape of the coil can only be a curved shape which is arched due to the contraction of the both ends, and the curved portion is not curled, for example, PET can be used. /PTT Fitting Wire This crimping fiber acts as a low shrinkage component and is blended with a high shrinkage polyester filament to form a double shrinkage yarn that will be softer to the touch.

Double shrinkage multi-different laminate filaments. It is mostly used for imitation hemp and imitation wool.

Development of high double shrink laminated wire. Spinning of different raw materials or modification of polyester raw materials increases the shrinkage rate.

Cui Li introduced: "At present, Xinfengming has formed an annual production capacity of 38,000 tons of different shrinkage laminated polyester. Next, we will carry out equipment for two melt straight spinning lines of Zhongxin Chemical Fiber, a subsidiary of the group. Reconstruction, deliberate production of different shrinkage fit polyester, it is estimated that our different shrinkage fit polyester capacity in 2013 will reach 80,000 tons per year."

Sun Derong told reporters that Selke will also add four different hybrid fiber laminate production lines this year. The annual new laminated wire production capacity will be 40,000 tons, the sales revenue will reach 600 million yuan, and the profit and tax will be nearly 100 million yuan. More than 300 jobs.

The relevant person in charge of Jiangsu Hengli Group told reporters that there is still room for expansion in the next step of shrinking and conforming to the production capacity of polyester. At the same time, it raises its concern: the early sales of different shrinkage and polyester have led to national follow-up and simply entered vicious competition.

The relevant person in charge of Tongkun Group said that the company's new type of different shrinkage and polyester will gradually expand its industrialization in the next five years, and it is estimated that the output will reach 35,000 tons/year by 2018.

For the future progress, relevant experts in the industry said that in the affirmative period (estimated within 5 years), the new product can not replace the traditional two-step shrinkage-bonding fiber, the traditional hetero-shrink fiber will exist for a long time during this time. , dominates the market. In the next 5 to 10 years, the technical bottleneck of new products and different shrinkage fibers will be gradually overcome, the advantages will be brought into play, and gradually occupy the market, and accepted by the market and customers, gradually become the leading product of different shrinkage fibers, the traditional two-step method The different shrinkage fibers will gradually be eliminated.