Heat shrink film

A technology of heat shrinkage and heat shrinkage rate, applied in applications, household appliances, layered products, etc., can solve the problems of inability to achieve solvent bonding, peeling, and poor solvent adhesion, and achieve excellent transparency and prevent clogging , Excellent processing suitability

CN100515764CInactive Publication Date: 2009-07-22TOYOBO CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2009-07-22
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment

[0100] The present invention will be further described in detail below through the examples, but the following examples do not limit the present invention, and within the scope of not departing from the gist of the present invention, the situation of changing implementation is also included in the present invention. The methods for measuring the physical properties of the films obtained in Examples and Comparative Examples are as follows.

[0101] (1) Heat shrinkage rate

[0102] A 10 cm x 10 cm square was cut out from the stretched film so that one side thereof was parallel to the running direction of the film, and immersed in a water bath heated to 95° C. for 10 seconds. Immediately after 10 seconds, dip in a separately prepared water tank at a temperature of 23°C to 25°C for 20 seconds, then measure the length of the film in the main shrinkage direction to obtain the thermal shrinkage rate. The direction of maximum shrinkage is set as the main shrinkage direction.

[0103...