Process and product thereof for stretching a non-woven web of an

Details Process and product thereof for stretching a non-woven web of an Process and product thereof for stretching a non-woven web of an

1978-04-27

1980-09-16

Lowe, James B.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

264286, 264287, 2642888, 428288, B29C 1702, D04H 312, D06C 306

Patent

active

042230594

ABSTRACT:
A non-woven web of synthetic fibers is selectively stretched in incremental portions in a first and second station wherein the first and second station are provided with sets of rolls having grooves parallel and perpendicular, respectively, to the axis of each set of rolls to form a bi-axially stretched web. One groove pattern of the rolls is generally a sinosoidal wave with distances between grooves being less than 1.0 millimeters times the web basis weight in grams per square meter.

REFERENCES:
patent: 2697678 (1954-12-01), Ness et al.
patent: 3305911 (1967-02-01), Chapman et al.
patent: 3574809 (1971-04-01), Fairbanks et al.
patent: 3849526 (1974-11-01), Muller et al.
patent: 3949127 (1976-04-01), Ostermeier et al.
patent: 3991250 (1976-11-01), Hartman et al.
patent: 4048364 (1977-09-01), Harding et al.

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