Patent ID: 7132376

Claim:
A scrim comprising at least two woven layers of thermoplastic tapes, comprising: (a) a first woven layer comprising: (i) a first set of tapes generally parallel to each other; and (ii) a second set of tapes generally parallel to each other, perpendicular to said first set of tapes and interwoven therewith; (b) a second woven layer comprising: (i) a first set of tapes generally parallel to each other, said first set of tapes being generally parallel to said first set of tapes of said first layer; and (ii) a second set of tapes generally parallel to each other, perpendicular to said first set of tapes of said second layer and interwoven therewith; and (c) a plurality of layer-connecting lines of attachment, generally parallel to said first sets of tapes, said lines of attachment each comprising at least one layer-connecting tape, said layer-connecting tape being interwoven with tapes of said second set of tapes of said first layer and with tapes of said second set of tapes of said second layer so as to attach said first layer to said second layer, each said line of attachment being separated from an adjacent said line of attachment by at least four tapes of said first sets of tapes.