Patent ID: 8129464

Claim:
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) n -B, or (A-B) n -Y wherein A comprises a polyvinyl aromatic block having a Tg higher than 80° C., B comprises a rubbery midblock having a Tg lower than −10° C., Y comprises a multivalent compound, and n is an integer of at least 3, wherein said block copolymer is a mixture of SIS and SBS block copolymers; 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%.