Fibrillated weatherproof webs having network structure, nonwoven

Details Fibrillated weatherproof webs having network structure, nonwoven Fibrillated weatherproof webs having network structure, nonwoven

1989-10-17

1991-07-16

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including grain, strips, or filamentary elements in...

264146, 264147, 264154, 264DIG47, 428109, 428131, 428134, 428136, 428137, 524 91, 524205, 524236, 524291, 524361, 524785, B32B 512

Patent

active

050324420

ABSTRACT:
Disclosed herein is a fibrillated weatherproof web having a network structure, which can be produced with ease and is economical. The web comprises a multilayer composite film composed of at least two layers, one being a first layer (I) made of a first thermoplastic resin and the other a second layer (II) made of a second thermoplastic resin having a melting point lower than the first thermoplastic resin and containing at least 300 ppm of a light resistance imparting agent. A number of slits have been formed in a longitudinal or transverse direction. The web has been oriented at a draw ratio in a range of from 1.1 to 15 times. A nonwoven fabric making use of one or more fibrillated webs of the above sort and processes for the production of the web and nonwoven fabric are also disclosed.

REFERENCES:
patent: 3169899 (1965-02-01), Steuber
patent: 3669795 (1972-06-01), Yazawa et al.
patent: 3734812 (1973-05-01), Yazawa
patent: 3906073 (1975-09-01), Kim et al.
patent: 4129632 (1978-12-01), Olson et al.
patent: 4297469 (1981-10-01), Hamakt
patent: 4410587 (1983-10-01), Fair et al.
patent: 4861639 (1989-08-01), Vittone et al.

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