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Spandex Fabric Excellent Elasticity
- Jul 13, 2017 -

Spandex Fabric Excellent elasticity

Spandex fabric (Spandex fabric) 1. Features Spandex is a polyurethane fiber, because of its excellent elastic, it is also known as elastic fibers, clothing fabrics have been a lot of applications. The main features of spandex fabric are:

  ⑴ spandex elasticity is very high, the general product does not use 100% polyurethane, more in the fabric mix 5 to 30% ratio, the various spandex fabrics are 15% to 45% comfortable elasticity. ⑵ spandex fabric is often made of composite yarn, that is, spandex for the core, with other fibers (such as nylon, polyester, etc.) made of cortex made of core yarn elastic fabric, its adaptability to the body is good, it is suitable for tights, No pressure. ⑶ spandex stretch fabric appearance and performance and coated with the outer layer of fabric similar to the similar products. 2. Spandex fabric is mainly used in tight clothing, sportswear, body belts and soles and other manufacturing. Its varieties according to the needs of the use, can be divided into warp elastic fabric, weft stretch fabric and latitude and longitude two-way elastic fabric. 3. Use 1, fabric and clothing grade depends mainly on the textile and garment technology, with the raw material fiber is not. For example, some nylon clothing more than ten dollars, and some thousands of dollars. There is no grade between the raw materials of the points. 2, underwear fabrics generally do not use nylon or spandex, and often blended with other fibers and intertwined. Especially spandex, the general content of about 5%. 4. The biggest advantage: Spandex fabric is the biggest advantage of good elasticity, can be stretched 5-8 times, not aging, spandex can not be individually woven, are generally woven with other raw materials, spandex ratio of about 3-10% , Swimwear fabric spandex ratio of 20%. Spandex fibers have high elongation at break (more than 400%), low modulus and high elastic recovery rate of synthetic fibers. Multi - block Polyurethane Fiber Chinese Product Name. Also known as elastic fibers. Spandex has high extensibility (500% to 700%), low elastic modulus (200% elongation, 0.04 to 0.12 gpd) and high elastic recovery rate (200% elongation, 95% to 99%). In addition to the larger intensity, the other physical and mechanical properties and natural latex silk is very similar. It is more resistant to chemical degradation than latex silk, with moderate thermal stability, softening temperature of about 200 ℃ or more. Most of the dyes and finishing agents used in synthetic fibers and natural fibers are also suitable for dyeing and finishing spandex. Spandex sweat, resistant to seawater and resistant to all kinds of dry lotion and most sunscreen. Long-term exposure to sunlight or in the chlorine bleach will fade, but the degree of fade with the type of spandex different, very different.

, Even 20D / root, the less the number of theoretical roots, the better the uniformity of the dry, due to the smaller the chance of overlapping form, the dry spinning of the production solution DMAC harmful to the human liver, generally 10D / Mg / kg, such as 15D / root containing 0.7mg / kg, more than the standard. In the production of Spandex, special attention should be paid to the effects of the roll tension, the count on the cylinder, the breaking strength, the elongation at break, the degree of formation, the amount of oil attached, the elastic recovery rate, etc. Single-sided cloth more to pay attention. Chemical fiber refers to those with natural or synthetic high polymer as raw material, the chemical method of manufacturing fiber, it can be divided into man-made fibers and synthetic fiber two categories. There are two types of man-made fibers, namely, synthetic cellulose fibers (such as viscose fiber, rich fiber, etc.) and synthetic protein fibers (such as soybean fiber, peanut fiber, etc.), and synthetic fiber camp is relatively large, polyester fiber ), Polyamide fiber (nylon 6, nylon 66, etc.), polyacrylonitrile fiber (acrylic), polyvinyl formal (vinylon), polypropylene fiber (polypropylene), polyvinyl chloride (polyvinyl chloride), polyamino Formate fiber (spandex). (Lycra, USA, UK, Holland, Canada, Brazil), Neolon (Japan), Doranstein (Dorlastan, Germany), the name of the product contains more than 85% of the components of the polyurethane, Wait. First by the German company Bayer in 1937 research success, the United States DuPont began in 1959 industrial production, has its spandex industry sold to the United States Koch Industrial Group, with a total capacity of about 100,000 tons. At present, the global total capacity of about 600,000 tons of spandex, and South Korea's Hyosung spandex production capacity of nearly 120,000 tons, becoming the world's first. China's first spandex business is Yantai spandex plant, began production in 1989. China's existing production capacity of about 350,000 tons, the world's largest spandex producer. There are two varieties of spandex, one is made of aromatic diisocyanate and hydroxyl-containing polyester chain inlaid copolymer (referred to as polyester-type spandex), the other is composed of aromatic diisocyanate and hydroxyl-containing polyether chain mosaic Copolymer (referred to as polyether spandex). Spandex fiber and elastic polyolefin fiber and elastic composite fiber collectively referred to as elastic fiber.