Polyurethane elastic fiber refers to a fiber made of a block copolymer containing polyurethane as its main component, and is called spandex for short. Spandex is currently the best textile fiber for elastic elongation and elastic recovery.
Spandex If the main purpose of the fabric is to use spandex's good elasticity to significantly increase the elasticity and dimensional stability of the fabric, garments woven from such fabrics will provide good conformability and comfort when worn. The content of spandex in the fabric is generally very small. Take a swimwear as an example, the nylon content is 80%, the spandex content is 20%, and the spandex content in a general elastic fabric is below 20%.
Due to different wearing requirements, fabrics can be divided into three categories according to their elasticity.
(a) High-elasticity fabrics: The elastic elongation rate is 30% to 50%.
(b) In shot fabrics: The elastic elongation is 20% to 30%.
(c) Low elasticity fabrics: The elastic elongation is less than 20%.
In general, 20% to 30% of elastic elongation can meet people's requirements for wearing comfort. From the perspective of the development of elastic fabrics, the use of spandex has gradually evolved from knitted fabrics to woven fabrics, from underwear garments, from garter belts to fabrics, from women's products and sporting goods to multipurpose textiles. Spandex is increasingly used as a high elasticity fiber in various fabrics and garments such as cotton, wool, silk and synthetic fibers.
Spandex is generally used in the following five forms:
1 Bare silk.
2 One or two plain yarns (filaments) are combined with spandex and twisted and twisted.
3 Use spandex as the core yarn and outsource the core yarn made of other yarns (silk).
4 Spandex is used as the core yarn, wrapped around various yarns.
5 Spinning core composite fibers are spun together with other polymers during spinning.
The swimwear fabric, stretch denim fabric and corduroy fabric are made of spandex or its core yarn by knitting and weaving. The direction of elasticity of the fabric is determined according to the requirements of the garment. The warp-elastic fabric should be made into ski clothing, tight pants, etc.; and the weft-stretch fabric should be made of sportswear, skirt materials, etc. Spandex can be made directly into knitwear, such as underwear, neckline, cuffs, trousers and socks. It is also used to make furniture covers, elastic bands, and belts. Spandex textiles are also used in medical materials, such as bandages, surgical lines, and artificial skin.
The performance of a spandex fabric
(a) The elasticity of spandex is very high. General products do not use 100% polyurethane, and the proportion of 5% to 30% is mixed in the fabric. The resulting spandex fabrics all have a comfortable elasticity of 15% to 45%.
(2) Spandex fabrics are often made of composite yarns, that is, spandex is used as the core, and other fibers (such as nylon, polyester, etc.) are used as the sheath to form core-spun elastic fabrics. The fabrics have good adaptability to the body and are suitable for tights. No pressure.
(3) The appearance and style of the spandex stretch fabric is similar to that of the similar products coated with outer fiber fabrics.
The main varieties and uses of two spandex fabrics
Spandex fabric is mainly used in tights, sportswear, body belts and soles. Its varieties can be divided into warp elastic fabrics, weft stretch fabrics and warp and weft bidirectional stretch fabrics according to the needs of the application. Spandex fabrics produced in China are shown in Table 1.
Fabric name
Raw Material Composition Elastic Elongation (%) Style Features Weft Corduroy Cotton Bag Spandex 24.5 ~ 35.0
Suede plump, soft and comfortable, elastic
High coverage, wide applicability
Weft stretch khaki
Cotton Spandex
25.0 Closely-textured, comfortable and durable weft stretch fabric cotton spandex 13.0
Soft texture, comfortable and beautiful
Weft gabardine
60 male hair: 95%
Spandex: 5%
20 ~ 25.0 with Mao Wada style, elasticity
Comfortable fast-weft stretch odor-wet taste 64 public Australian Spandex core yarn 20.2
It has a rough, savory style and is worn
Comfortable and beautiful
Elastic stretch
66 male hair: 92.3%
Silk: 2%
Nylon: 5.2%
Spandex: 0.5%
9.47 is a hairpin fabric of Mao Rong Jin Jing, fast
Wear-resistant, comfortable and silky, silky
High-grade fabrics weft stretch fabric
66 male hair: 91.6%
Silk: 3.0%
Nylon: 4.9%
Spandex: 0.5%
11.75 is a furry fabric of Mao Jing Jin Jing, fast
Wear-resistant, comfortable and silky, silky
High-end cloth warp and weft stretch fabric
64 public branches outside hair: 94.4%
Nylon: 6.0%
Spandex: 0.6%
Longitude: 13.6
Latitude: 11.3 is a two-way stretch fabric, good elasticity, hair
Strong, comfortable and durable high-grade clothing
The suitability of spandex fabrics is shown in Table 2.
Stretch fabric name
Elastic elongation (%) Applicable purpose
Stretchy cloth, elastic khaki, elastic gaodai, etc.
15 Trousers, Shorts, Denim Skirts, Stretch Labor, Elastic Corduroy, Elasticity Khaki, and Huada
10 ~ 20
Jackets, work clothes, jeans, tights
Elastic muslin, elastic taffeta, stretch poplin, etc.
20 ~ 35 skis, sportswear
Elastic poplin, elastic muslin, etc.
40 ~ 45 underwear, female bra
For more information, please pay attention to China bubu.com
Spandex If the main purpose of the fabric is to use spandex's good elasticity to significantly increase the elasticity and dimensional stability of the fabric, garments woven from such fabrics will provide good conformability and comfort when worn. The content of spandex in the fabric is generally very small. Take a swimwear as an example, the nylon content is 80%, the spandex content is 20%, and the spandex content in a general elastic fabric is below 20%.
Due to different wearing requirements, fabrics can be divided into three categories according to their elasticity.
(a) High-elasticity fabrics: The elastic elongation rate is 30% to 50%.
(b) In shot fabrics: The elastic elongation is 20% to 30%.
(c) Low elasticity fabrics: The elastic elongation is less than 20%.
In general, 20% to 30% of elastic elongation can meet people's requirements for wearing comfort. From the perspective of the development of elastic fabrics, the use of spandex has gradually evolved from knitted fabrics to woven fabrics, from underwear garments, from garter belts to fabrics, from women's products and sporting goods to multipurpose textiles. Spandex is increasingly used as a high elasticity fiber in various fabrics and garments such as cotton, wool, silk and synthetic fibers.
Spandex is generally used in the following five forms:
1 Bare silk.
2 One or two plain yarns (filaments) are combined with spandex and twisted and twisted.
3 Use spandex as the core yarn and outsource the core yarn made of other yarns (silk).
4 Spandex is used as the core yarn, wrapped around various yarns.
5 Spinning core composite fibers are spun together with other polymers during spinning.
The swimwear fabric, stretch denim fabric and corduroy fabric are made of spandex or its core yarn by knitting and weaving. The direction of elasticity of the fabric is determined according to the requirements of the garment. The warp-elastic fabric should be made into ski clothing, tight pants, etc.; and the weft-stretch fabric should be made of sportswear, skirt materials, etc. Spandex can be made directly into knitwear, such as underwear, neckline, cuffs, trousers and socks. It is also used to make furniture covers, elastic bands, and belts. Spandex textiles are also used in medical materials, such as bandages, surgical lines, and artificial skin.
The performance of a spandex fabric
(a) The elasticity of spandex is very high. General products do not use 100% polyurethane, and the proportion of 5% to 30% is mixed in the fabric. The resulting spandex fabrics all have a comfortable elasticity of 15% to 45%.
(2) Spandex fabrics are often made of composite yarns, that is, spandex is used as the core, and other fibers (such as nylon, polyester, etc.) are used as the sheath to form core-spun elastic fabrics. The fabrics have good adaptability to the body and are suitable for tights. No pressure.
(3) The appearance and style of the spandex stretch fabric is similar to that of the similar products coated with outer fiber fabrics.
The main varieties and uses of two spandex fabrics
Spandex fabric is mainly used in tights, sportswear, body belts and soles. Its varieties can be divided into warp elastic fabrics, weft stretch fabrics and warp and weft bidirectional stretch fabrics according to the needs of the application. Spandex fabrics produced in China are shown in Table 1.
Table 1 Spandex fabrics produced in China
Fabric name
Raw Material Composition Elastic Elongation (%) Style Features Weft Corduroy Cotton Bag Spandex 24.5 ~ 35.0
Suede plump, soft and comfortable, elastic
High coverage, wide applicability
Cotton Spandex
25.0 Closely-textured, comfortable and durable weft stretch fabric cotton spandex 13.0
Soft texture, comfortable and beautiful
Weft gabardine
60 male hair: 95%
Spandex: 5%
20 ~ 25.0 with Mao Wada style, elasticity
Comfortable fast-weft stretch odor-wet taste 64 public Australian Spandex core yarn 20.2
It has a rough, savory style and is worn
Comfortable and beautiful
Elastic stretch
66 male hair: 92.3%
Silk: 2%
Nylon: 5.2%
Spandex: 0.5%
9.47 is a hairpin fabric of Mao Rong Jin Jing, fast
Wear-resistant, comfortable and silky, silky
High-grade fabrics weft stretch fabric
66 male hair: 91.6%
Silk: 3.0%
Nylon: 4.9%
Spandex: 0.5%
11.75 is a furry fabric of Mao Jing Jin Jing, fast
Wear-resistant, comfortable and silky, silky
High-end cloth warp and weft stretch fabric
64 public branches outside hair: 94.4%
Nylon: 6.0%
Spandex: 0.6%
Longitude: 13.6
Latitude: 11.3 is a two-way stretch fabric, good elasticity, hair
Strong, comfortable and durable high-grade clothing
The suitability of spandex fabrics is shown in Table 2.
Table 2 Applicability of Spandex Fabric
Stretch fabric name
Elastic elongation (%) Applicable purpose
Stretchy cloth, elastic khaki, elastic gaodai, etc.
15 Trousers, Shorts, Denim Skirts, Stretch Labor, Elastic Corduroy, Elasticity Khaki, and Huada
10 ~ 20
Jackets, work clothes, jeans, tights
Elastic muslin, elastic taffeta, stretch poplin, etc.
20 ~ 35 skis, sportswear
Elastic poplin, elastic muslin, etc.
40 ~ 45 underwear, female bra
For more information, please pay attention to China bubu.com
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