Granted Patent B2

US 7,148,162 · App. 10/796,662 · Granted Dec 12, 2006

Abstract

Claims (16)

1. A ballistic laminate structure in sheet form, comprising:

(a) a first high-performance unifabric composite including an array of unidirectionally-oriented fiber bundles carried on a first fiber-stabilizing scrim and said bundles comprising fibers having a tensile strength greater than 7 grams per denier, and said first scrim comprising a heat-activated fibrous web;

(b) a second high-performance unifabric composite cross-plied at an angle to said first unifabric composite, said second unifabric composite including an array of high performance, unidirectionally-oriented fiber bundles carried on a second fiber-stabilizing scrim and said bundles comprising fibers having a tensile strength greater than 7 grams per denier, and said second scrim comprising a heat-activated fibrous web; and

(c) whereby said first and second unifabric composites are thermally-bonded together upon heat activation of said first and second scrims to form said ballistic laminate structure.

2. A ballistic laminate structure according to claim 1 , and comprising a polymeric film residing between said first and second cross-plied unifabric composites to adhere said composites together without substantial penetration of said film into said fiber bundles.

3. A ballistic laminate structure according to claim 1 , wherein said polymeric film comprises polyethylene film having a thickness of about 0.35 mils.

4. A ballistic laminate structure according to claim 1 , wherein said first unifabric composite is cross-plied at an angle of 90 degrees to said second unifabric composite.

5. A ballistic laminate structure according to claim 1 , wherein the percentage by weight of the high performance fibers in the ballistic laminate structure is at least 80 percent of the total weight of the ballistic laminate structure.

6. A ballistic laminate structure according to claim 1 , wherein the fiber bundles of said first and second unifabric composites comprise fibers chosen from the group consisting of aramid fiber, polyolefin, vinylon, and liquid crystal polymer-based fiber.

7. A ballistic laminate structure according to claim 1 , wherein the fiber bundles of said first and second unifabric composites comprise fibers chosen from the group consisting of extended chain ultra-high molecular weight polyethylene (UHMWPE), poly {p-phenylene-2, 6-benzobisoxazole} (PBO), and poly {diimidazo pyridinylene (dihydroxy) phenylene} (M5).

8. A ballistic laminate structure according to claim 1 , wherein said first unifabric composite comprises a second scrim located on an opposite side of said fiber bundles.

9. A ballistic laminate structure according to claim 1 , wherein said second unifabric composite comprises a second scrim located on an opposite side of said fiber bundles.

10. A ballistic laminate structure in sheet form, comprising:

(a) a first high-performance unifabric composite including an array of unidirectionally-oriented fiber bundles sandwiched between first and second fiber-stabilizing scrims, and said bundles comprising fibers having a tensile strength greater than 7 grams per denier, each of said first and second scrims of said first composite comprising a heat-activated fibrous web;

(b) a second high-performance unifabric composite including an array of high performance, unidirectionally-oriented fiber bundles sandwiched between first and second scrims, and said bundles comprising fibers having a tensile strength greater than 7 grams per denier, each of said first and second scrims of said second composite comprising a heat-activated fibrous web; and

(c) whereby said first and second unifabric composites are thermally-bonded together upon heat activation of said scrims to form said ballistic laminate structure.

Assignments (9)

Continuity (1)