Comfortable And Lightweight Fiber, Low-Carbon Lifestyle Trend

Lightweight fiber is subject to downstream clothing The pursuit of enterprises is to meet people's constant pursuit of silky, elegant and light feeling. At the same time, lightweight fiber also saves the use of raw materials, which is in line with the social trend of low-carbon life.

　 Meet the requirements of "light experience" technology

The reporter learned that the varieties of lightweight fibers mainly include continuous cavity, fine denier and ultra fine denier fibers. By redesigning the spinneret and spinning process, adopting the high-speed spinning drafting deformation process route, developing a side blowing system with uniform cooling and stable forming, and adding such process techniques as low wind speed, high humidity, relatively mild cooling conditions and low thermal draw ratio, fiber manufacturers can obtain fibers with continuous cavities, fine deniers or ultra fine deniers.

There is no uniform international standard for the definition of fine denier, micro denier and ultra fine denier fibers. In China, 0.9~1.4 dtex fibers are generally called fine denier fibers, 0.55~1.1 dtex fibers are micro denier fibers, and fibers below 0.55 dtex are ultra fine denier fibers.

Fine denier fiber spin During processing, under the same yarn count, the number of cross sections of fibers in the yarn will be increased accordingly, thus greatly improving the evenness and strength of the yarn. In addition, during fiber processing, it is also conducive to increasing the number of yarn counts. Due to the fine size and low bending rigidity of the fine chemical fiber, the fabric looks fine and clean, feels soft, smooth and waxy, and has excellent drapability. The representative products of lightweight fiber include profiled nylon 6 fiber and ultra-fine polyester fiber.

　　 Wide range of applications for middle and high grade

The lightweight fiber adopts low single filament linear density and low total denier number, which makes it light, thin and soft, and effectively combines with the basic functions of clothing. It has light weight, moisture absorption, quick drying, good ventilation, soft feel, anti pilling, warmth and other excellent wearing properties, and is widely used in sports and leisure Clothes & Accessories , underwear, swimwear, socks and other high-end lightweight fabrics.

Lightweight fibers can make fiber products lightweight and fluffy, so they can be used in coral velvet products, such as women's leisure coats, bathrobes, nightgowns, plush toys, etc., as well as sofa cushions, car seat covers, etc. Fine denier fiber is very suitable for silk like series. The ultra-thin fabric made of this fiber has smooth surface, clear lines, fine texture, smooth feel, good moisture absorption and breathability, and can be used for high-end clothing fabrics.

Lightweight fiber is very suitable for processing ultra-thin fabrics. The fineness of the fiber can make the luster of the fabric softer, increase the mercerizing effect and drape feeling, and can be used to manufacture various high-level evening dresses and knitted clothes. The person in charge of Jiangsu Shenghong Technology Co., Ltd. told reporters that the main application field of fine denier and super fine denier fibers produced by Shenghong is clothing, and in the high-end Brand clothing The application on the brings high added value to the products. Polyester DTY can achieve 10D, with an average of 50000 yuan per ton. The enterprise's efforts in fine denier and ultra fine denier fibers have been recognized by the downstream market, and the returns are generous.

After the fineness of the fiber reaches a certain level, the high-performance cleaning cloth can absorb dust, particles, liquids and other dirty objects that are more than 7 times of its own weight, and can wipe all kinds of glasses, film and television equipment, precision instruments, etc. without any damage to the mirror surface. Therefore, this kind of products can be used in precision machinery, optical instruments, microelectronics Clean room and other fields have also been widely used.

Lightweight fibers are also increasingly used in high-density waterproof breathable fabrics. In terms of the application of submachine suit and tent, it has the characteristics of light texture, good drapability, soft and plump feel, and fine structure. Although it is not coated and waterproof, it also has high waterproof and breathable performance. In addition, the lightweight texture has been recognized and widely used by high-end brand customers. The profiled nylon 6 fiber has been widely recognized for its application in this field due to its lightweight characteristics while giving full play to the performance advantages of nylon. At present, Huading nylon is in the forefront of the industry in the production and processing of this variety.

The fluffy nature of lightweight fibers also makes it possible to imitate artificial fur. Suede and artificial leather made by raising, buffing and post-treatment Leatherwear The products are light, thin, soft, smooth, waterproof, breathable, strong, and non deformable, which are widely used in sofa fabrics, car interiors and other fields. The reporter learned that Qilu Acrylic Fiber Factory aimed at high-end underwear and started the development of fine denier fiber at the beginning of this year. The process technicians carried out in-depth research on improving the spinning process, oil formulation, online drafting equipment and other aspects, carried out four production tests, and produced about 1.8 tons of fine denier fiber samples of three different specifications. After trial spinning by several users, the spinnability was good and was recognized by users.

　　 Variety diversification leads to new trends

In addition to the development needs of the conventional civil field, the protection clothing field also has the development requirements of lightweight in recent years. Some experts believe that protective clothing is uncomfortable to wear: first, protective fiber generally requires high strength and high modulus or some special functions. In order to obtain these functions, most functional fibers have high linear density; Second, in order to increase the protective performance, most protective textiles are tightly woven, with a large fixed weight per square meter; Third, most of the textiles for protective clothing are processed after finishing, which further increases the weight setting, resulting in problems such as poor hand feel, air tightness, overweight and poor wearing comfort of protective clothing. These problems can be solved one by one by using lightweight fibers.

According to the market demand, Sinopec Yizheng Chemical Fiber Co., Ltd. pays attention to the research of fine denier in the research and development of ultra-high molecular weight polyethylene fiber. Jiang Runxi, a researcher of the company, believes that UHMWPE fiber will take the fine denier route in the application fields of protection and civil products in the future. Fine denier can not only improve the comfort of products, but also improve the strength and modulus of products. It is an important aspect of upgrading high-performance fiber products.

Of course, lightweight fiber also brings problems that need to be tackled in production technology when it triggers the trend. Experts pointed out that during high-speed warping, all tension blocks, screw guides, and static eliminators of the lightweight fibers should be kept clean to prevent dust and static accumulation. The hardness of the warp shaft shall be appropriate to make the inner and outer layer shrink to balance. Pay attention to the cleanness of each wire guide during warping. Due to the large surface area of fine denier wire, it absorbs more slurry than ordinary wire, so the sizing rate should be high. The oiling device should be used, and the hardness of the sizing shaft should be moderate. In addition, special attention should be paid to the control of levelness during dyeing. The total surface area of fine denier fiber is larger than that of conventional fiber, the product has a larger contact surface with dyes, which is easy to absorb dyes, has fast dyeing speed, consumes more dyes, is not easy to dye evenly, and has poor light fastness and wet fastness. All these need to be overcome by production enterprises in actual operation.