Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including interlaminar mechanical fastener
Patent
1975-05-07
1977-07-26
Bell, James J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including interlaminar mechanical fastener
162157R, 428286, 428288, 428290, 428303, 428362, 428369, 428401, 428515, 428904, D04H 1300
Patent
active
040384527
ABSTRACT:
A bulky non-woven fabric of improved softness and uniformity in surface density, flatness and thickness is provided. The non-woven fabric comprises (a) 50 to 95% by weight of spontaneously crimped acrylonitrile polymer fibers having lengths of 4mm to 20mm and at least 20 crimps per inch of length, said acrylonitrile polymer consisting essentially of, in polymerized form, 80 to 100% by weight of acrylonitrile and 0 to 20% by weight of a copolymerizable monoethylenically unsaturated monomer, and (b) 5 to 50% by weight of fibrillated fibers of at least one acrylonitrile polymer, said acrylonitrile polymer comprising, in polymerized form, 60 to 98% by weight of acrylonitrile and 2 to 40% by weight of a copolymerizable monoethylenically unsaturated monomer having a carboxyl group or an amide or N-alkyl substituted amide group. The non-woven fabric is in the form of a web having a structure such that said spontaneously crimped fibers are entangled with both each other and with said fibrillated fibers, and having an apparent density of 0.05 to 0.25 g/cm.sup.3.
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patent: 3486970 (1969-12-01), Troemel
patent: 3701819 (1972-10-01), Yoshida et al.
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patent: 3809738 (1974-05-01), Shimoda et al.
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patent: 3855056 (1974-12-01), Maeda et al.
Fukuda Hideo
Kobayashi Tadahiro
Matsubayashi Yukio
Wakita Eiichi
Asahi Kasei Kogyo Kabushiki Kaisha
Bell James J.
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