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U.S. Patent No. 10,716,712
September 11, 2020
By: Karen McIntyre
Editor
Robert Haines Turner, Cincinnati, OH; Todd Leon Mansfield, Cincinnati, OH; Torsten Lindner, Kronberg, Germany; and Matthias Morand, Bad Soden, Germany. Assigned to The Procter & Gamble Company, Cincinnati, OH. Filed: 6/12/14 Issued: 7/21/20 An absorbent article comprising at least one stretchable laminate comprising a first nonwoven, a second nonwoven, and an elastic film therebetween; wherein each of the first and second nonwovens is adhesively bonded to the film by a polyolefin-based hot melt adhesive; wherein the film is no thicker than about 60 micrometers; wherein at least one of the nonwovens is a spunbond nonwoven; wherein the laminate is activated with a minimum of about 290% applied strain and a minimum strain rate of 1,000/s; wherein the laminate is substantially free from pinholes; wherein activation occurs before the adhesive achieves 85% of its normalized modulus G’; wherein the normalized modulus G’ of the polyolefin-based hot melt adhesive has a normalized modulus G’ maximum value; wherein the normalized modulus G’ of the polyolefin-based hot melt adhesive is from about 30% to about 70% of the normalized modulus G’ maximum value at 250 seconds; wherein the adhesive comprises interpolymers of ethylene comprising at least one comonomer selected from vinyl esters of saturated carboxylic acid wherein the acid moiety has up to 4 carbon atoms, unsaturated mono- or dicarboxylic acids of 3-5 carbon atoms, a salt of the unsaturated acid, esters of the unsaturated acid derived from an alcohol having 1 to 8 carbon atoms, and mixtures thereof; wherein the adhesive comprises 0% by weight of a tackifying resin; wherein the laminate comprises a plurality of raised rib-like elements separated by unformed areas; and wherein the elastic film comprises a SBS block copolymer.
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