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Moisture-barrier laminate film

A laminated film, inorganic barrier layer technology, applied in the direction of layered products, coatings, metal layered products, etc., to achieve the effects of preventing cracking, improving productivity, and excellent moisture barrier properties

Pending Publication Date: 2020-06-19
TOYO SEIKAN GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, to date, there has been no in-depth study on the adhesion between the moisture trapping layer and the inorganic barrier layer in relation to the short-term heating of the moisture trapping layer at 100 °C.

Method used

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  • Moisture-barrier laminate film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0252] An isocyanate-reactive resin solution (wpb-341, 30% solid content, supplied by Mitsui Kagaku Co. Manufactured).

[0253] The isocyanate reactive resin solution and the silane coupling agent (3-glycidoxypropyltrimethoxysilane) as the curing agent are 5 with respect to the solid content of 100 parts by weight of the isocyanate reactive resin solution with respect to the solid content of the curing agent. Amounts of parts by weight are blended. The blend thereof was then diluted with a mixed solvent of water and 2-propanol to prepare an isocyanate-based coating liquid having a solid content of 20%.

[0254] A commercially available barrier film (Toppan printing, GL-RD, substrate: PET (12 μm), manufactured by Toppan Insatsu Co.) having a protective layer (D) on a silicon oxide layer (inorganic barrier layer) was provided. The protective layer (D) includes polyvinyl alcohol and tetraethoxysilane.

[0255] The above isocyanate-based coating liquid was applied onto the prot...

Embodiment 2

[0258] An isocyanate-based coating liquid was prepared in the same manner as in Example 1, except that the amount of solid content of the curing agent was changed to 20 parts by weight relative to 100 parts by weight of the solid content of the main polymer solution.

[0259] A moisture barrier laminated film 10 was obtained by the same method as in Example 1 except that the above isocyanate-based coating liquid was used.

Embodiment 3

[0261] The isocyanate reactive resin solution provided in Example 1 was used. This solution was blended with blocked isocyanate (XWB-F206MEDG manufactured by Mitsui Kagaku Co.) as a curing agent in an amount of 10 parts by weight of the solid content of the curing agent relative to 100 parts by weight of the solid content of the main ingredient. The blend thereof was diluted with a mixed solvent of water and 2-propanol, thereby preparing an isocyanate-based coating liquid containing 20% ​​solid content.

[0262] A moisture barrier laminated film 10 was obtained by the same method as in Example 1 except that the above isocyanate-based coating liquid was used.

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Abstract

The present invention pertains to a moisture-barrier laminate film 10 which comprises: a plastic film (A) having an inorganic barrier layer (A1) at the surface thereof; and a moisture trap layer (B),the moisture-barrier laminate film 10 being characterized in that, between the plastic film (A) and the moisture trap layer (B), an isocyanate-based coating (C) is provided which has, as a film-forming constituent, an isocyanate-based polymer obtained by a reaction using an isocyanate as a reaction constituent, and the moisture trap layer (B) is formed with the isocyanate-based coating (C) as a foundation layer.

Description

technical field [0001] The present invention relates to a moisture barrier laminated film having an inorganic barrier layer and a moisture trapping layer. The present invention further relates to a coating composition for forming a base layer of a moisture trapping layer. Background technique [0002] As means for improving the properties of various plastic substrates, especially the gas barrier properties, a technique of forming an inorganic thin film (inorganic barrier layer) such as silicon oxide by vacuum evaporation on the surface of a plastic substrate is known (Patent Document 1). A film provided with such an inorganic thin film has been widely used as a barrier film. [0003] Various electronic devices developed and put into practical use in recent years, such as organic electroluminescence (organic EL) devices, solar cells, touch panels, and electronic paper, etc., require a high degree of moisture barrier properties. In order to meet the above requirements, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B27/40C09D5/00C09D175/04C09D5/02
CPCC08J7/0423C08J7/043C08J7/048C08J7/056C08G18/0866C08G18/42C08G18/70C08G18/80C09D175/04C09D175/06C09D5/002B32B27/18C08J7/04C08K5/5415C08K5/56B32B7/12B32B9/045B32B15/09B32B27/306B32B27/36B32B2255/10B32B2255/26B32B2307/726B32B2457/00C08J5/18C08J2475/06C08J2475/14C08J2483/06C09D175/14C09D183/06
Inventor 奥山真平高山圭将南乡瞬也八木泽美理太田芳弘
Owner TOYO SEIKAN GRP HLDG LTD
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