Densely woven quasi-unidirectional fabric for ballistic applications
AssigneeBarrday Inc.
InventorsJason van Heerden, Shekoufeh Shahkarami, David Verlin Cunningham, Laura E. Pritchard
Life of this patent
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Abstract
A fabric including a first layer of high-performance unidirectional yarns and a second layer of high-performance unidirectional yarns disposed transversely to the first layer. The fabric also includes warp and fill encapsulating yarns woven around the unidirectional yarns to substantially stabilize the unidirectional yarns. The encapsulating yarns have tenacities and tensile moduli substantially less than the tenacities and tensile moduli of the unidirectional yarns. The fabric has a cover factor between approximately 0.75 and approximately 1.50.
Claims23
A woven fabric included in a panel for protecting against a ballistic threat, the fabric comprising:
- a first layer of high-performance unidirectional yarns;
- a second layer of high-performance unidirectional yarns disposed transversely to the first layer;
- warp and fill encapsulating yarns woven around the unidirectional yarns to substantially stabilize the unidirectional yarns, said encapsulating yarns having tenacities and tensile moduli substantially less than the tenacities and tensile moduli of the unidirectional yarns;
- and
- the fabric having a cover factor between approximately 0.75 and approximately 1.50 such that the yarns in the first and second layers, as included in the panel, are substantially crimp-free.
A single ply woven fabric included in a panel for protecting against a ballistic threat, the fabric comprising unidirectional ballistic resistant yarns in at least two layers in the single ply, the layers being at 90°±5° with respect to each other, the ballistic resistant yarns being substantially stabilized by being woven with encapsulating yarns having substantially lower tenacity and tensile modulus than the ballistic resistant yarns and the fabric having a cover factor between approximately 0.75 and approximately 1.50 such that the yarns in the first and second layers, as included in the panel, are substantially crimp-free.
A method of forming a woven fabric included in a panel for protecting against a ballistic threat, comprising:
- (a) creating a single ply fabric comprising unidirectional dense glass ballistic resistant yarns in at least two layers in the single ply, the layers being at 90°±5° with respect to each other, the ballistic resistant yarns being substantially stabilized by being woven with encapsulating yarns having substantially lower tenacity and tensile modulus than the ballistic resistant yarns and the fabric having a cover factor between approximately 0.75 and approximately 1.25;
- (b) creating a ballistic resistant fabric assembly comprising multiple layers of the single ply fabric, wherein the yarns in the layers, as included in the panel, are substantially crimp-free;
- (c) immersing the ballistic resistant fabric assembly in a thermoset resin in liquid form;
- (d) permitting the encapsulating yarns to substantially deteriorate due to the process of forming the composite material;
- and
- (e) curing the thermoset resin.
A method of forming a woven fabric included in a panel for protecting against a ballistic threat, comprising:
- (a) creating a single ply fabric comprising unidirectional aramid ballistic resistant yarns in at least two layers in the single ply, the layers being at 90°±5° with respect to each other, the ballistic resistant yarns being substantially stabilized by being woven with encapsulating yams having substantially lower tenacity and tensile modulus than the ballistic resistant yarns and the fabric having a cover factor between approximately 0.80 and approximately 1.50;
- (b) creating a ballistic resistant fabric assembly comprising multiple layers of the single ply fabric, wherein the yarns in the layers, as included in the panel, are substantially crimp-free;
- (c) immersing the ballistic resistant fabric assembly in a liquid thermoset resin;
- and
- (d) curing the thermoset resin.
A woven fabric included in a panel for protecting against a ballistic threat, the fabric comprising:
- a first layer of high-performance unidirectional yarns;
- a second layer of high-performance unidirectional yarns disposed transversely to the first layer;
- warp and fill encapsulating yarns woven around the unidirectional yarns to substantially stabilize the unidirectional yarns, said encapsulating yarns having tenacities and tensile moduli substantially less than the tenacities and tensile moduli of the unidirectional yarns;
- and
- the fabric having a cover factor between approximately 0.40 and approximately 0.84 such that the yarns in the first and second layers, as included in the panel, are substantially crimp-free.
Dependencies are inferred from the claim text.