Patent ID: 8986811
Filing Date: 2015-03-24
Classification: B32B,F41H,Y10T

Abstract:
1. A penetration-resistant article comprising: a first layer of woven fabric; a second layer of woven fabric adjacent the first layer of woven fabric; the first and second layers of woven fabric each comprising a first series of fibers aligned in a first direction and a second series of fibers interwoven with the first series of fibers and aligned in a second direction perpendicular to the first direction; the first and second layers of woven fabric loosely stacked together so as to permit relative slippage therebetween; wherein the first and second directions of the fibers in the first layer of woven fabric are rotationally offset to the first and second directions in the second layer of woven fabric by an offset angle selected so as to inhibit mechanical interference between opposing adjacent surfaces of the first and second woven fabric layers during slippage therebetween, wherein the first and second layers of woven fabric are combined in a bag or envelope that surrounds the first and second layers of woven fabric and maintains the relative rotational offset of the stacked fabric layers, and wherein the penetration-resistant article is resistant to penetration by a sharpened object and meets or exceeds Level 1 National Institute of Justice (NIJ) standard 0115.00 for stab resistance of personal body armor.