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Elastic material used in the fabrics of a summer cycling attire comprising a jersey, bib shorts and gloves. Spandex, Lycra, or elastane is a synthetic fiber known for its exceptional elasticity. It is a polyether - polyurea copolymer that was invented in 1958 by chemist Joseph Shivers at DuPont. [ 1 ][ 2 ][ 3 ]
Joseph Clois Shivers Jr. (November 29, 1920 – September 1, 2014) was an American textile chemist who was based in West Chester, Pennsylvania, best known for his role in the structural development of Spandex, a thermoplastic elastomer, in the 1950s, while employed at DuPont. [1] Shivers was born in 1920 in Marlton, New Jersey.
History of PDF. The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008. Since then, it has been under the control of an International Organization for Standardization (ISO) committee of ...
The study of the history of clothing and textilestraces the development, use, and availability of clothingand textilesover human history. Clothing and textiles reflect the materials and technologies available in different civilizations at different times. The variety and distribution of clothing and textiles within a society reveal ...
PostScript is a page description language run in an interpreter to generate an image. [ 6 ] It can handle graphics and has standard features of programming languages such as branching and looping. [ 6 ] PDF is a subset of PostScript, simplified to remove such control flow features, while graphics commands remain.
Polyurea is a type of elastomer that is derived from the reaction product of an isocyanate component and an amine component. The isocyanate can be aromatic or aliphatic in nature. It can be monomer, polymer, or any variant reaction of isocyanates, quasi-prepolymer or a prepolymer. The prepolymer, or quasi-prepolymer, can be made of an amine ...
The variety of synthetic fibres used in manufacturing fibre grew steadily throughout the 20th century. In the 1920s, the computer was invented; in the 1940s, acetate, modacrylic, metal fibres, and saran were developed; acrylic, polyester, and spandex were introduced in the 1950s. Polyester became hugely popular in the apparel market, and by the ...
The loincloth continues to be worn by people around the world – it is the traditional form of undergarment in many Asian societies, for example. In various, mainly tropical, cultures, the traditional male dress may still consist of only a single garment below the waist or even none at all, with underwear as optional, including the Indian ...