About Lycra fabric LYCRA

- Jun 25, 2019-

Another transliteration of Lycra's foreign vocabulary is called a pull frame, which is probably a transliteration of Hong Kong and Taiwan.

 

Many of our designer friends like to say that they used a little Lycra when they talked about their recent work. Perhaps, not only is Lycra's clothing quite fashionable, the word itself has a strong and fashionable color.

 

Lycra is a new type of fiber introduced by DuPont of the United States. At present, as long as it is a clothing with Lycra, it will have a triangular tag, which is also a symbol of high quality. So, where is the advantage of Leica? According to the quality specifications introduced by DuPont, Lycra differs from traditional elastic fibers in that it can stretch up to 500% and can be returned to its original state. That is to say, the fiber can be stretched very easily, but it can be attached to the surface of the human body after being recovered, and the binding force to the human body is small. Lycra fiber can be used with any fabric, including wool, linen, silk and cotton, to increase the fabric's fit, elasticity and loose natural characteristics. And Lycra is different from most spandex yarns in that it has a special chemical structure and will not grow mildew in a wet and heat sealed space after wet water.


Therefore, Lycra is known as a "friendly" fiber, not only because it can be thoroughly blended with natural and man-made fibers, but also to increase the comfort, body, movement and service life of the fabric or clothing.


Lycra (LYCRA) can be stretched 4 to 7 times freely and quickly return to its original length after the external force is released. It cannot be used alone and can be interwoven with any other artificial or natural fiber. It does not change the appearance of the fabric and is an invisible fiber that greatly improves the performance of the fabric. Lycra has outstanding stretchability. For knitwear, its multi-directional stretch is determined by the fabric itself, and Leica brings only the elasticity of stretching and recovery. The woven fabric is ductile only in the direction of weaving into the lycra, such as warp knitting (straight direction) or weft knitting (horizontal direction). The trousers benefit from the warp elasticity, while the two-way elastic woven fabric with lycra provides great comfort and freedom in both directions. Therefore, in the trousers, jackets and other women's ready-to-wear into the Lycra, the folds can be easily and automatically restored, the clothes are more scooped and not easily deformed, and they are free to feel free to feel new. Even if you make rigorous suits, coats, etc., there is no urgency and crampiness. Knitwear, underwear, bodybuilding pants and other knitwear add a little Leica, which is both fit and comfortable, and can be worn on the body and can move with you.

 

Lycra has a wide range of applications, adding extra comfort to all types of garments, including underwear, custom jackets, suits, skirts, pants, knitwear and more. It greatly improves the fabric feel, drape and crease recovery ability, improves the comfort and fit of various clothes, and makes various garments show new vitality, especially the Leica developed by DuPont and the International Wool Bureau. Wool blended materials. It provides a new concept for the textile industry in the late 20th and 21st centuries.


The hygroscopic property of the viscose fiber is closely related to the dyeing property and the fiber itself contains a large amount of hydroxyl groups (-OH). The hydroxyl group (—OH) group adsorbs a large amount of water molecules or other molecules, and the better the hygroscopicity, the better the dyeability of the fiber. Viscose fiber has cracked cellulose macromolecular group due to its many physical and chemical reactions in the manufacturing process, making its macromolecules shorter, the molecular gap is larger, and the arrangement is loose and disordered. The hydroxyl group in the molecule (—OH) It can be polar, and it is better than cotton in these aspects. Therefore, the viscose fiber has better dyeability than cotton, and it is not only suitable for dyes, chromatography, but also dyed colors.


Acetate fibers (including diacetate fibers and triacetate fibers), which are both cellulose regenerated fibers, have significantly lower dyeing properties than viscose fibers. This is because most of the hydroxyl groups (-OH) in the molecules of the acetate fibers are acetylated to form a hydrophobic group. Therefore, viscose fiber and cotton can use dyes, but it may not be used. It can be seen that in cellulose fibers, the viscose fiber is also the best in dyeability, and is also easy to dye, and the cost of printing and dyeing is also low.


Viscose fiber also has shortcomings in printing and dyeing, such as it can be widely used as a cellulose fiber such as cotton. Although reactive dyes can replace some harmful chemical dyes, they produce more colored sewage during the printing process. In addition, viscose fibers are inferior to certain synthetic fibers in terms of color fastness and light fastness of some printing. Although this is related to dye performance and process, the viscose fiber has good dyeability, full chromatogram, bright color and low cost.