Plastic and nonmetallic article shaping or treating: processes – With twining – plying – braiding – or textile fabric formation
Patent
1989-09-20
1991-07-02
Lorin, Hubert C.
Plastic and nonmetallic article shaping or treating: processes
With twining, plying, braiding, or textile fabric formation
264130, 264148, 264151, 264168, 264206, 2642107, 2642108, 26421115, 26421116, 26421117, 264233, D01F 618, D01D 504
Patent
active
050283693
ABSTRACT:
A process for the discontinuous or (preferably) continuous production of dry spun hydrophilic acrylic fibers and threads with a core/sheath structure which have improved color fastness properties, more uniform cross-sections and better processing characteristics. By employing a new after-treatment combination of more intensive counterflow washing, stretching in steam, fixing in steam and careful drying of the fibers as staple fibers, improved hydrophilic fibers with a water retention capacity above 30% can be obtained from spinning solutions which have a much lower non-solvent content than is necessary in the present-state of the art for obtaining a high water retention capacity of the order indicated above.
REFERENCES:
patent: 4336214 (1982-06-01), Reinehr et al.
patent: 4622195 (1986-11-01), Bueb et al.
Heinkes Dieter
Kunzel Egon
Paulini Dieter
Reinehr Ulrich
Turck Gunter
Bayer Aktiengesellschaft
Lorin Hubert C.
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