Patent ID: 6323145
Filing Date: 2001-11-27
Classification: A41D,B32B,B63H,D04H,F41H,Y10S,Y10T

Abstract:
A flexible penetration resistant stabilized composite, comprising:an interlaced yarn structure of yarns having a tenacity of at least 8 g/d, a tensile modulus of at least 150 g/d and an energy to break of at least 10 j/g, the yarn structure further comprising:a plurality of first yarn subgroups having a plurality of yarns oriented in a first direction free of crossings and a plurality of second yarn subgroups having a plurality of yarns oriented in a second direction free of crossings;the yarns in each subgroup following substantially parallel paths that are spaced apart at a repeating cell distance of three or more yarn widths to sparsely cover a common predetermined fabric area; the yarn subgroups are arranged with a first subgroup next to a second subgroup, wherein the yarns in the first subgroup cross the yarns in the second subgroup to form a stack of yarns with each subgroup at a different level within the stack;the yarns in successive ones of the plurality of first yarn subgroups have a predetermined width and the yarns in said first yarn subgroups are offset from each other by a distance equal to or less than the width of a yarn in that subgroup; andthe yarns in successive ones of the plurality of second yarn subgroups have a predetermined width and the yarns in said second yarn subgroups are offset from each other by a distance equal to or less than the width of a yarn in that subgroup,whereby the yarns in the successive first yarn subgroups abut or partially overlap with another and the yarns in the successive second yarn subgroups abut or partially overlap with another,the stacking of all of the plurality of first subgroups forming a first yarn group comprising yarns that densely cover the predetermined fabric area, the stacking placing as many yarns in the cell distance of the first subgroups as there are subgroups in the first group, and the stacking of all of the plurality of second subgroups forming a second yarn group comprising yarns that densely cover the predetermined fabric area, the stacking placing as many yarns in the cell distance of the second subgroups as there are subgroups in the second group, the outermost subgroups in the stack forming a top and bottom of the stack; anda first polymeric web comprising a thermoplastic resin, a thermosetting resin or a combination thereof which web is coextensive with, in contact with, and is bound to the surface of a first one of the subgroups;wherein the polymeric web comprises between 5-25% by weight of the composite, and the polymeric web at least partially contacts and is bound to the yarns in all the subgroups in the stack, to thereby contain the subgroups in the stack in an interlaced yarn structure.