Patent ID: 8784967
Filing Date: 2014-07-22
Classification: B32B,B65B,B65D,D04H,Y10T

Abstract:
1. An open mesh material extending in machine and cross machine directions, the open mesh material comprising: filaments that intersect one another, at least some of the filaments being composite filaments having a carrier portion of a relatively high melting point and a bonding portion of a relatively low inching point, the bonding portion of each composite filament being thermally bonded to other filaments at at least some points of intersection, wherein the open mesh material has a mass per unit area of less than 30 g/m 2 and a strength to mass ratio in at least one of the machine and cross machine directions of at least 2.67 N/(g/m 2 ), where strength is measured in accordance with ASTM standard D 5034, wherein the open mesh material is a non-woven fabric, wherein the filaments include first and second layers of weft filaments that cross one another at an acute angle relative to the cross machine direction, wherein the filaments include third and fourth layers of warp filaments that extend in the machine direction and that are disposed outside of the first layer and the second layer, respectively, wherein the filaments of each of the third and fourth layers extend at least generally in parallel with one mother in the machine direction, and wherein filaments of at least one of the third and fourth layers are spaced closer together in one section of the fabric than in another section of the fabric.