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US 6,296,921 B1Granted
Composite fabric
AssigneesBay Mills Limited, CertainTeed Corporation
InventorsPhillip W. Blackmore, David L. Spanton, Douglas W. LeVan
Life of this patent
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AssigneesBay Mills Limited, CertainTeed Corporation
InventorsPhillip W. Blackmore, David L. Spanton, Douglas W. LeVan
Estimating the term…
A lightweight, high-strength composite fabric suitable for use in carpet backing, roofing and membranes and other products which employ rugged fabrics. The composite fabric comprises a layer of nonwoven material disposed between a layer of low shrinkage warp strands and a layer of low shrinkage weft strands. The layers are stitched or knitted together and the resultant fabric may be coated with a resin or sizing to prevent slippage between the several layers of the fabric and impart a measure of stiffness to the fabric. The fabric may be manufactured in sheet or, more preferably, roll form and may be coated with materials suitable for desired end applications, e.g., bituminous material whereby the fabric may function as a ready-to-use roofing membrane or other high-strength fabric product.
A fabric reinforced product comprising a composite fabric embedded within a polymer material, said composite fabric comprising a structure consisting of a single layer of warp strands, a single layer of weft strands, and a single layer of nonwoven material disposed between said layers of warp strands and weft strands, the layers of warp and weft strands and the nonwoven material being stitched or knitted together.
A fabric reinforced roofing membrane comprising a composite fabric embedded within a polymer material, said composite fabric comprising a structure consisting of a single layer of warp strands, a single layer of weft strands, and a single layer of nonwoven material disposed between said layers of warp strands and weft strands, the layers of warp and weft strands and the nonwoven material being stitched or knitted together.
A fabric reinforced carpet backing comprising a composite fabric embedded within a polymer material, said composite fabric comprising a structure consisting of a single layer of warp strands, a single layer of weft strands, and a single layer of nonwoven material disposed between said layers of warp strands and weft strands, the layers of warp and weft strands and the nonwoven material being stitched or knitted together.
Dependencies are inferred from the claim text.