Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Forming continuous work followed by cutting
Patent
1980-02-25
1983-01-18
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Forming continuous work followed by cutting
264171, B29H 718
Patent
active
043691560
ABSTRACT:
Fiber structures such as staple fibers, filaments, yarns as well as textile sheet structures such as woven or knitted fabrics as well as non-woven fabrics and the like made from multicomponent fibers of the matrix-segment type having in their cross sections a plurality of segments arranged peripherally without being fully surrounded by the matrix and being composed of polyalkylene terephthalate and copolyamides based on .epsilon.-caprolactam and hexamethylene diamine/adipic acid salt, are split by treatment with liquid or vaporous water. The difference in shrinkage between copolyamide and polyalkylene terephthalate in water is temporarily at least 10%. Corresponding short-staple fibers are particularly well suited for making wet-laid non-woven fabrics. The water used for treatment of the fiber structures may contain inorganic salts.
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Mathes Nikolaus
Wechs Friedbert
Akzona Incorporated
Hall Jack H.
Woo Jay H.
Young Francis W.
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