Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Reshaping running or indefinite-length work
Patent
1976-07-28
1978-05-09
Lowe, James B.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Reshaping running or indefinite-length work
264168, 264288, D06C 300, B29C 1702
Patent
active
040887316
ABSTRACT:
A bonded web of nonwoven fibers is stretched beyond its elastic limit in one direction sufficiently to permanently elongate those filaments or filament portions of the web extending generally in the direction of the applied tension. This results in a narrowing or necking down of the web in the cross direction and consequent shortening or lateral buckling of those filaments or filament portions extending generally transverse to the direction of applied tension. This imparts increased softness, flexibility and resilient stretchability to the fabric, in that transverse direction. The elongated filaments are then compacted longitudinally while the web is retained in its narrowed condition to impart increased softness, flexibility and resilient stretchability in the longitudinal direction.
REFERENCES:
patent: 2624245 (1953-01-01), Cluett
patent: 3047444 (1962-07-01), Harwood
patent: 3427376 (1969-02-01), Dempsey
patent: 3772417 (1973-11-01), Vogt
Clupak, Inc.
Lowe James B.
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