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Transparent gas barrier multilayer film

A laminated film and gas barrier technology, applied in the field of transparent gas barrier laminated films, can solve the problems of insufficient thickness uniformity, pinholes, and inability to obtain high barrier properties.

Inactive Publication Date: 2007-05-23
TEIJIN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, it is known that thin films of inorganic compounds formed by sputtering have pinholes and high barrier properties cannot be obtained.
In addition, the uniformity of the thickness was reported to be insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] As the polymer film, a biaxially stretched polyethylene terephthalate film "Tetron" (OPFW, thickness 125 μm) manufactured by Teijin Dubon Film Co., Ltd. was used. On one side of the film, use the resin solution prepared in (4) above to prepare a coating paint for forming a resin layer as follows, dilute it with 1M2P, and make the weight ratio of final resin A1 and resin B1 25:75, solid content The concentration is 22.5% by weight.

[0098] Then, this coating paint was applied to one side of a polyethylene terephthalate film with a Meyer bar, and dried at 70° C. for 1 minute. The coated surface was then irradiated with 250 mW of UV light for 1 minute. Then, it was left to stand in a dryer at 130° C. for 3 minutes to obtain a resin layer with a thickness of 2.5 μm.

[0099] The polyethylene terephthalate film forming the resin layer was then placed in the sputtering chamber. And the degree of vacuum attained in the sputtering chamber was set at 1.3E-5Pa or less, and ox...

Embodiment 2

[0102] Except for using the biaxially stretched polyethylene 2,6-naphthalate film "Tionex" (Q65A, thickness 200 μm) manufactured by Teijin Dubon Film Co., Ltd. as the polymer film, it was carried out in the same manner as in Example 1 to produce Transparent gas barrier laminated film.

[0103] The water vapor transmission rate of this transparent gas barrier laminated film is 0.08g / m 2 / day, the oxygen transmission rate is 0.9cc / m 2 / day. In addition, the total light transmittance is 90%, SiO x The x obtained by Auger electron spectroscopy was 1.9. The cross-cut result is 100 / 100. When the film was heat-treated at 130°C for 2 hours, the above properties did not change.

Embodiment 3

[0105] A transparent gas barrier laminated film was produced in the same manner as in Example 1, except that polycarbonate ("Piyua Eyes"-WR, thickness 120 μm) manufactured by Teijin Co., Ltd. was used as the polymer film.

[0106] The water vapor transmission rate of this transparent gas barrier laminated film is 0.10 g / m 2 / day, the oxygen transmission rate is 1.2cc / m 2 / day. In addition, the total light transmittance is 90%, SiO x The x obtained by Auger electron spectroscopy was 1.9. The cross-cut result is 100 / 100. When the film was heat-treated at 130°C for 2 hours, the above properties did not change.

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Abstract

Disclosed is a transparent gas barrier multilayer film having a resin layer containing an acrylic resin having a lactone ring and a layer composed of an inorganic metal compound on at least one side of a polymer film. This multilayer film has high transparency and excellent water vapor barrier properties, and thus can be preferably used for electronic paper, liquid crystal displays, touch panels, organic light-emitting diode devices, film-like solar cells and substrates for electronic tags.

Description

technical field [0001] The present invention relates to a transparent gas barrier laminated film. In particular, it relates to a transparent gas barrier laminated film having high water vapor barrier properties and suitable as a substrate for liquid crystal display elements, touch panels, organic light emitting diode elements, and electronic paper. Background technique [0002] In recent years, the trend of miniaturization and low energy consumption of various devices with size reduction as the key word has the following tendency. By changing the substrate used in various display elements or thin-film solar cells from glass to polymer film, it has light weight. Quantitative features. In addition, since the polymer film is lightweight and flexible, it can suppress damage such as cracks in various devices. As a result, the application of polymer thin films to fields where glass has traditionally been used as a substrate has become increasingly active. [0003] In particular...

Claims

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Application Information

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IPC IPC(8): B32B9/00B32B27/30C08F220/18
Inventor 原宽伊藤晴彦白石功
Owner TEIJIN LTD
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