Heat-Shrinkable Laminated Film, Molded Product and Heat-Shrinkable Label Employing the Film, and Container

Abstract

The present invention provides a heat-shrinkable laminated film, which exhibits excellent film rigidity, shrink finishing quality, transparency of the recycled film, and a small natural shrinkage, with suppressed film interlayer peeling and shrinking stress, and which is applicable to shrinkable packing, shrinkable bond-packing, shrinkable label and the like. The heat-shrinkable laminated film comprises: a surface layer (S layer) composed of a polyester series resin composition containing a polyvalent carboxylic acid residue and a polyvalent alcohol residue; a middle layer (M layer) composed of a styrene series resin composition; and an adhesive layer (AD layer) which contains a copolymer of styrene series hydrocarbon and a conjugated dienic hydrocarbon or hydrogenated derivatives thereof, and having a styrene series hydrocarbon content rate to the entire copolymer or hydrogenated derivatives is 5˜40 mass % or less. An elongation modulus of the film in a direction perpendicular to a main shrinking direction of the film is 1200 MPa or more, and a shrinking stress in the main shrinking direction of the film is 8 MPa or less or a rupture elongation at 23° C. is 40% or more.

Description

TECHNICAL FIELD

[0001] The present invention relates to a heat-shrinkable laminated film, a molded product and a heat-shrinkable label employing the film, and a container. More particularly, the present invention related to a heat-shrinkable laminated film, which exhibits excellent shrink finishing quality, film rigidity (stiffness at room temperature), transparency at a time of addition as a reclamation material, and a small natural shrinkage and reduction of mechanical strength over time, with suppressed film interlayer peeling and shrinking stress, and which is applicable to shrinkable packing, shrinkable bond-packing, shrinkable label and the like, and a molded product and a heat-shrinkable label employing the film, and a container. BACKGROUND ART

[0002] These days, soft drinks such as juice are sold in a form that the drink is filled in containers such as glass bottles or SET (polyethylene terephthalate) bottles. When the drinks are on sale, in order to differentiate the goods ...

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