Heat shrink film

A technology of heat shrinkage and heat shrinkage rate, used in applications, household appliances, layered products, etc., can solve problems such as peeling, inability to achieve solvent bonding, and poor solvent adhesion, preventing clogging and excellent transparency. , The effect of excellent processing suitability

Inactive Publication Date: 2007-01-10
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

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

[0101] (1) Thermal shrinkage rate

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

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PUM

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Abstract

The invention provides a heat-shrinkable film, which satisfies (A) an easy-slip layer with a solid content coating amount of 0.002 to 0.5 g / m2 containing a silicone component formed on at least one side of a polyester film, (B ) the coefficient of friction μd between the slippery layers ≤ 0.27, and (C) the thermal shrinkage rate in the direction of maximum shrinkage after immersion in hot water at 95°C for 10 seconds is 50% or more. When the heat-shrinkable film of the present invention is used as a beverage container label, since the lubricity of the outer side is improved, clogging of products in a beverage vending machine can be prevented, solvent adhesion can be sufficiently satisfied, and processing suitability is excellent.

Description

technical field [0001] The present invention relates to a heat-shrinkable film, and more specifically, its object is to provide a heat-shrinkable polyester-based film and a heat-shrinkable polystyrene-based film, when these films are used as labels for beverage containers , Since the lubricity of the outer side is improved, the clogging of goods 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 purposes of outer packaging for improving the appearance of packaged goods, packaging to avoid direct impact on the contents, and label packaging for both protecting glass or plastic bottles and indicating the function of products. widely used. As plastic raw materials used for these purposes, stretch films such as polyvinyl chloride-based films, polystyrene-based films, and polyester-based films are used for polyethylene terephthalate in the fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/30B29C61/06B29K67/00B29K105/02B29L7/00B32B27/00
Inventor 稻垣京子早川聪多保田规小田尚伸
Owner TOYOBO CO LTD
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