Heat shrink film

Abstract

There is provided a heat shrink polyester film characterized in that (A) at least one major surface thereof is overlaid with 0.002 to 0.5 g / m<2>, in terms of solid content coating amount, of a silicone containing easily sliding layer, (B) the easily sliding layer having an inter-easily sliding layer frictional coefficient mud <= 0.27, and that (C) the heat shrink polyester film exhibits a heat shrinkage factor, as measured in the direction of maximum shrinkage after immersion in 95 1 / 2 C water for 10 sec, of 50% or greater. Thus, there is provided the heat shrink film that when used as a label of beverage container, enhances the smoothness of external surface side to thereby prevent merchandise jamming in an automatic vending machine of beverage and that is fully satisfactory in solvent bonding capability and excels in processability.

Description

technical field [0001] The present invention relates to a heat-shrinkable film, and more specifically, an object thereof is to provide a heat-shrinkable polyester film and a heat-shrinkable polystyrene film, when these films are used as labels for beverage containers , Since the lubricity of the outer side is improved, the clogging of products in the beverage vending machine is prevented, and its processing suitability is excellent. Background technique [0002] In recent years, heat-shrinkable plastic films have been used for the purpose of improving the appearance of packaged products, packaging that prevents the contents from being directly impacted, and label packaging that protects glass or plastic bottles and displays the functions of goods, etc. widely used. As plastic raw materials used for these purposes, stretched films such as polyvinyl chloride films, polystyrene films, and polyester films are used for polyethylene terephthalate in the form of labels and cap sea...

AI Technical Summary

Problems solved by technology

[0009] However, since post-processing of the film is required, in addition to the problem of cost, there are also problems such as wear and tear due to friction between the roller and the lamination surface during the processing process, and productivity decline.

In addition, if an easy-slip coating is applied to lubricate the surface of the film before or after printing, the solvent adhesiveness will deteriorate, and due to the decrease in solvent adhesiveness, the bonded part will be damaged during heat shrinkage. Sometimes peels off, in extreme cases solvent bonding is not possible

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