Patent ID: 9168720
Filing Date: 2015-10-27
Classification: B29C,B32B,D04H,Y10T

Abstract:
1. A method of imparting constraint in a biaxially elastic nonwoven laminate comprising: providing a biaxially elastic nonwoven laminate comprising at least one meltspun elastic fabric and at least one extensible fabric or film; and fusing at least a portion of the at least one meltspun elastic fabric to at least one of the extensible fabrics to create at least one inelastic zone; wherein the laminate has a CD width, and the at least one inelastic zone runs perpendicular to the CD of the laminate such that the inelastic zone has MD length longer than CD width of the inelastic zone, and where the CD width of the inelastic zone is at least 5% of the CD width of the laminate; and wherein the meltspun elastic fabric comprises 70 to 100 wt % of a propylene-based elastomer, based on the weight of the meltspun elastic fabric, where the propylene-based elastomer comprises propylene-derived units and 5 to 35 wt % ethylene-derived units, based on the weight of the propylene-based elastomer, and where the propylene-based elastomer has a heat of fusion of from 0.5 to 80 J/g and a MFR of from 1 to 50 dg/min.