Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Scrim – Nonwoven scrim
Patent
1997-08-09
2000-06-06
Raimund, Christopher
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Scrim
Nonwoven scrim
442 57, 442 58, 442394, 428107, 210490, 21050027, 156178, B01D 6912
Patent
active
06071834&
ABSTRACT:
A breathable membrane and a method of constructing a fabric having the membrane, wherein the membrane is resistive to transport of liquid water, has a layer of breathable material and is stabilized dimensionally against distension by a force field, such as forces which may be applied to the membrane or resulting from a hydrostatic pressure, by a reinforcing matrix of nonwoven filaments extending in plural directions along the layer of breathable material to inhibit the distension. In the matrix, the filaments are arranged in a first plurality of the filaments which intersect a second plurality of the filaments to form cells. A minimum diameter of an individual one of the cells is greater by at least approximately an order of magnitude than a diameter of one of the filaments to provide open areas of the layer of breathable material which are free from obstruction by the filaments. The membrane is suitable for construction of a surgical gown or drape preventing transmission of pathogens, a covering for a wall of a house, as well as a covering of a container for industrial processes. The matrix filaments may be constructed in elastic form, but wherein the elasticity of each filament is limited for a maximum amount of extension so as to avoid any rupture of the breathable film. The extension limits may be the same or may differ among the various filaments.
REFERENCES:
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patent: 3751329 (1973-08-01), Fonzi et al.
patent: 3949111 (1976-04-01), Pelletier
patent: 4433026 (1984-02-01), Molde
patent: 4507356 (1985-03-01), Watabe
patent: 4808675 (1989-02-01), Twilley et al.
patent: 4898761 (1990-02-01), Dunaway et al.
patent: 5342469 (1994-08-01), Bodford et al.
Raimund Christopher
Warren David M.
LandOfFree
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