Patent ID: 8962113
Filing Date: 2015-02-24
Classification: B29C,B29K,B29L,B32B,Y10T

Abstract:
1. A heat-shrinkable laminate film comprising: a surface layer comprising a polyester resin; an adhesive layer comprising an adhesive resin; and an intermediate layer comprising a styrene resin wherein the styrene resin contains as a main component, a mixture of at least two different copolymers of a styrene hydrocarbon with butadiene differing in styrene content; and one of the at least two different copolymers has a styrene content of 80 to 95 mass % and at least one of the other different copolymers has a styrene content of 60 to 80 mass %; wherein the adhesive layer is adjacently positioned between the surface layer and the intermediate layer; and wherein a heat shrinkage of the film in the main shrink direction is at least 10% and less than 30% when the film is dipped in water of 70° C. for 10 seconds, and at least 30% and at most 70% when the film is dipped in water of 80° C. for 10 seconds wherein the intermediate layer includes the heat-shrinkable laminate film as recycled, in an amount of at most 40 mass % based on the total amount of the film, and the haze value of the film is at most 10% as measured in accordance with JIS K7105, and wherein the heat-shrinkable laminate film has a five-layer structure, in order, of: a surface layer, an adhesive layer, an intermediate layer, an adhesive layer, a surface layer.