| 主权项 |
1. A hot melt pressure sensitive adhesive comprising:
a) 1 to 30 wt. % of at least one ethylene-vinyl acetate copolymer with a melting temperature greater than 70° C.; b) 2 to 50 wt. % of a block copolymer that includes a styrene-isoprene-butylene copolymer, in a weight ratio of 10:1 to 1:2 to the total block copolymer, wherein the block copolymer is selected from the group consisting of styrene-butadiene copolymer, styrene-isoprene copolymer, styrene-ethylene/butylene copolymer, styrene-ethylene/propylene-styrene copolymer, styrene-isoprene-butylene copolymer and mixtures thereof, c) 20 to 70 wt. % of a tackifying resin; and d) 5 to 40 wt. % of a plasticizer which is a mixture of at least one oil and at least one ester; wherein the sum of the adhesive components equals to 100% and wherein the hot melt pressure sensitive adhesive is characterized as re-detachable. |
