Wire-reinforced elastic webbing
View Patent ↗A wire-reinforced webbing material is disclosed for use in furniture, bedding and the like. The webbing includes a flat knitted fabric comprised of substantially elastic yarns such as polyester. A plurality of reinforcement wires are integrally knitted into the fabric structure in a lengthwise direction. The wires may be thin-gauge titanium or titanium alloy wires. Elastomeric yarns or cards may also be integrally knitted into the fabric structure parallel to the reinforcement wires. The reinforcement wires and elastomeric cords combine with the knitted fabric to yield a webbing material having both a high tensile strength and a resilient responsiveness to applied external loads.
1. A webbing material comprising:
(a) a knitted fabric structure having first and second lateral edges and comprising:
(i) a plurality of first warp yams,
(ii) a plurality of second yarns; and
(iii) a plurality of first weft yarns;
(b) a plurality of elastomeric warp yarns, filaments or cords integrally knitted into the knitted fabric structure; and
(c) a plurality of high-strength metal warp wires having a yield strength of at least about 30,000 lb/in 2 and an ultimate strength of at least about 40,000 lb/in 2 integrally knitted into the knitted fabric structure;
wherein the plurality of elastomeric yarns, filaments, or cords and the plurality high-strength metal warp wires are substantially straight and are substantially parallel to each other in a warpwise direction.
2. A webbing material according to claim 1 wherein the metal warp wires comprise titanium or a titanium alloy.
3. A webbing material according to claim 1 wherein the first warp yarns, the second warp yarns, and the first weft yarns comprise polyester.
4. A webbing material according to claim 1 wherein the elastomeric warp yarns comprise a thermoplastic polyester elastomer.
5. A webbing material according to claim 1 wherein the webbing material has a lengthwise tensile strength of at least 130 lbs. per inch of webbing width.
6. A webbing material according to claim 1 wherein the webbing material includes substantially elastic elongation in a warp direction between about 3 percent and about 20 percent.
7. A webbing material according to claim 1 wherein the webbing material elongates about 186 percent before failure in tension.
8. A webbing material according to claim 1 wherein at least one of the metal warp wires is integrally knitted into the knitted fabric structure proximate to the first lateral edge; and at least one other metal warp wire is integrally knitted into the knitted fabric structure proximate to the second lateral edge.
9. A reinforced webbing material comprising a knitted fabric structure of at least partially interlaced substantially elastic yarns or filaments, a plurality of substantially straight titanium or titanium alloy wires integrally knitted lengthwise in the knitted fabric structure, and a plurality of substantially straight elastomeric yarns, filaments, or cords integrally knitted in the knitted fabric structure substantially parallel to the titanium or titanium alloy wires.