Process for the preparation of fibrillated fiber structures
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United States of America Patent
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-
Jan 18, 1983
Grant Date -
N/A
app pub date -
Feb 25, 1980
filing date -
Feb 27, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
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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- Non-US Classification not provided for expired patents
Cited Art Landscape
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- Citation Ranking not provided for expired patents
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