Textiles: manufacturing – Textile product fabrication or treatment – Fiber entangling and interlocking
Patent
1993-04-28
1994-10-18
Crowder, Clifford D.
Textiles: manufacturing
Textile product fabrication or treatment
Fiber entangling and interlocking
28105, 19163, 264171, D04H 142, D04H 146
Patent
active
053555651
ABSTRACT:
A process for the production of a non-woven sheet of continuous interconnected filaments, comprising producing biconstituted filaments of a size less than 4 dtex comprising two interconnected elemental filament components each of a different polymer, imparting to the biconstituted filaments a curl having a curling frequency of 3 to 30 curls per centimeter to impart to the filaments a bunching upon curling of 50 to 400%, and forming a non-woven sheet from the curled biconstituted filaments, the sheet having a weight of 10 to 400 g/m.sup.2. The non-woven sheet is then subjected to water jets supplied under a pressure of 50 to 300.times.10.sup.5 Pa to interlace and entangle the curled filaments constituting the sheet and to separate the interconnected filaments from each other.
REFERENCES:
patent: 4017580 (1977-04-01), Barbey
patent: 4188690 (1980-02-01), Suzuki et al.
patent: 4329763 (1982-05-01), Alexander et al.
patent: 4548628 (1985-10-01), Miyake et al.
patent: 4560385 (1985-12-01), Baravian
patent: 4939016 (1990-07-01), Radwanski et al.
Calvert John J.
Crowder Clifford D.
Freudenberg Spunweb S.A.
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