| 摘要 |
The present invention concerns label stock comprising a laminate of face stock, a pressure sensitive adhesive layer and a release liner, wherein the pressure sensitive adhesive layer comprises
(a) at least one block copolymer, comprising at least two terminal blocks of poly(vinyl aromatic compound) and at least one midblock of a randomly copolymerized mixture of isoprene (I) and butadiene (B) used in a weight ratio of (1):(B) of 35:65 to 80:20, said midblock having a single glass transition temperature Tg of at most determined according to ASTM E-1356-98),
(b) at least one diblock copolymer, comprising one block of poly(vinyl aromatic compound) and one block of polymerized butadiene and/or isoprene;
(c) a tackifying resin; and
(d) optionally a plasticizer
wherein component (a) is a thermoplastic elastomer, component (b) comprises from 30 to 85% by weight of the mixture of components (a) and (b), and wherein on 100 parts by weight of the mixture of components (a) and (b), from 20 to 450 parts by weight component (c) is used |
