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Japan Chemical Fibers Association

Types and Manufacturing Process of Chemical Fibers

SYNTHETIC FIBERS

Polyurethane Fibers

Polyurethane fibers are referred to as "Spandex" as a generic name. The fiber itself is highly stretch and elastic as rubber, strong than rubber, and resistant to aging. The fiber is dyeable freely and fine yarn can be produced.

Polyurethane fiber is manufactured from glycol and diisocyanate as raw material with a special spinning method.

No product is manufactured of 100% poly-urethane fiber. The polyurethane fiber is used by blending other fibers. A fabric, referred to "two-way tricot" in which a polyurethan fiber is knitted with a nylon or polyester filament yarn, is highly elastic both in wale- and course-way and is used for swimsuits, leotards, underwear and other similar stretchable clothing.

A yarn, in which another yarn such as nylon yarn is wound around polyurethane yarn is referred to as a "covered yarn". A covered yarn is used for pantyhose and foundation garments. In addition, a yarn in which a polyurethane yarn is inserted as a core in the spinning process is referred to as a "core spun yarn". A core spun yarn is used for tights and training wear.

1. END-USES
  • [FOR CLOTHING]
    Used as a Part of Foundations such as Brassieres, Girdles, Corsets, Sweaters, Underwear, Pantyhose, Socks, Swimsuits, Shirts Slacks, etc.
  • [FOR OTHER USES]
    Bandages, Supporters, Paper Diapers, etc.
2. FEATURES
  1. Extends 5~7 times when stretched as rubber..
  2. More durable than rubber and 2~4 times higher tensile strength than rubber. More resistant to aging than rubber and finer yarn is available.
  3. Since considerably resistant to high tempera-ture, a heat setting can be achieved with other fibers simultaneously.
  4. Although non-attackable with alkali, yellowing with the action of chlorine and deterioration is accelerated with chlorine.
3. CARE INSTRUCTIONS
Avoid chlorinated bleaching agents. Do not iron by stretching a polyurethane fabric.

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LINKS
-JAPAN
  • Japan Synthetic Textile Inspection Institute Foundation
  • Japan Spinners' Association
  • Japan Chemical Industry Association
  • Japanese Standards Association
-WORLD
  • AFMA (American Fiber Manufacturers Association, Inc.)
  • APSyFI (Indonesian Synthetic Fiber Makers Association)
  • CCFA (China Chemical Fibers Association)
  • CIRFS (International Rayon and Synthetic Fibres Committee)
  • IVC (INDUSTRIEVEREINIGUNG CHEMIEFASER E.V.)
  • KCFA (Korea Chemical Fibers Association)
  • MTMA (Malaysian Textile Manufacturers Association)
  • TMMFA (Taiwan Man-made Fiber Industries Association)
  • TSMA (The Thai Synthetic Fiber Manufacturers' Association)
CONTACT
TOKYO
7th Fl.,Sen-i Kaikan, 3-1-11,Nihombashi-Honcho, Chuo-ku,Tokyo 103-0023
Tel: 81-3-3241-2311
Fax: 81-3-3246-0823
OSAKA
OSAKA 5th Fl.,Osaka-Kagakusen-i Kaikan, 4-6-8,Kawara-machi,Chuo-ku, Osaka 541-0048
Tel: 81-6-6231-6781
Fax: 81-6-6223-1790
e-mail
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