Composite laminar structure and relative manufacturing process

Details Composite laminar structure and relative manufacturing process Composite laminar structure and relative manufacturing process

1974-12-23

1976-06-08

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

427366, 427370, 428310, 428317, 428425, 428904, B32B 1702, B32B 2740

Patent

active

039625125

ABSTRACT:
A non-woven fabric having a fibrous surface similar to that of leather and high mechanical characteristics so that it is adapted for use as a substitute for leather in industrial applications is prepared by saturating a matt of fibers with an elastomeric polyurethane which can be cross-linked with moisture. The so obtained composite laminar structure, having a thickness of from 0.1 to 10 mm, has a density of about 0.85 to 1.4 g/cm.sup.3, a hardness of 85 to 95 Shore A and a tensile strength of about 1.5 to 2.5 kg/mm.sup.2, and possesses a water-vapor permeability in the range of about 30 to 100 g/m.sup.2 /24 hours according to DIN 53 333.

REFERENCES:
patent: 1533273 (1925-04-01), Respess
patent: 2772995 (1956-12-01), Wilson
patent: 2973284 (1961-02-01), Semegen
patent: 3238055 (1966-03-01), Brightwell
patent: 3282039 (1966-11-01), Geyer et al.
patent: 3346445 (1967-10-01), Gay
patent: 3384506 (1968-05-01), Elkin
patent: 3483015 (1969-12-01), Fukushima et al.
patent: 3595732 (1971-06-01), Tingerthal
patent: 3694301 (1972-09-01), Gruenwald et al.

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