Patent ID: 9028933
Filing Date: 2015-05-12
Classification: B32B,C08G,C08L,C09J,G09F,Y10T

Abstract:
1. A shrink label, comprising a heat-shrinkable multilayer resin film comprising an intermediate layer comprising a polystyrene type resin and outer surface layers comprising a polyester type resin, with said intermediate layer interposed therebetween, as a base film, wherein the polystyrene type resin composing said intermediate layer is a mixed resin of an aromatic vinyl hydrocarbon-conjugated diene copolymer and an aromatic vinyl hydrocarbon-aliphatic unsaturated carboxylic acid ester copolymer, the polyester type resin composing said outer surface layers contains a component derived from terephthalic acid as a dicarboxylic acid component, and a component derived from ethylene glycol and 1, 4-cyclohexanedimethanol as a diol component, and said intermediate layer is bonded to said outer surface layers with an adhesive layer consisting of a hydrogen addition product of an aromatic vinyl hydrocarbon-conjugated diene copolymer, having at least one functional group selected from the group consisting of a carboxylic group, an acid anhydride group, an amino group, an epoxy group and a hydroxyl group in a molecule of said hydrogen addition product, and the content of aromatic vinyl hydrocarbon components in the hydrogen addition product of an aromatic vinyl hydrocarbon-conjugated diene copolymer is 30 to 80% by weight, wherein an amount of the aromatic vinyl hydrocarbon-conjugated diene copolymer to be mixed is 20 to 80% by weight and an amount of the aromatic vinyl hydrocarbon-aliphatic unsaturated carboxylic acid ester copolymer to be mixed is 20 to 80% by weight, in the mixed resin composing the intermediate layer.