Patent ID: 8129464
Filing Date: 2012-03-06
Classification: A61L,C08L,C09J

Abstract:
1. A hot melt adhesive composition, comprising a blend of the following components: about 10% to about 40% by weight of an elastomeric block copolymer having a structure represented by A-B, A-B-A, A-(B-A) about 15% to about 70% by weight of a first midblock tackifying resin having a softening point of at least about 110° C. and having an aromatic content of at least about 1.5% by weight; about 0 to 55% of second midblock tackifying resin about 5% to about 35% by weight of a plasticizer; and about 0% to about 20% by weight of an end block tackifying resin having a softening point lower than 125° C.; wherein the components total 100% by weight of the composition, the viscosity of the composition is equal to or less than about 20,000 mPa·s at 120° C., and may be applied at a temperature lower than 150° C. and initial bond retention of the composition on elastic strands is at least about 60%.