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Laminate having moisture barrier properties

一种层压体、无机阻挡层的技术，应用在分层产品、涂层、导体等方向，能够解决没有水分研究、不能够显示水分充分程度的阻挡性等问题，达到寿命延长的效果

Active Publication Date: 2018-06-08
TOYO SEIKAN GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above moisture barrier laminate can exhibit a high degree of barrier property against water flowing in the thickness direction of the laminate (along the surface direction) but still cannot exhibit sufficient degree of barrier property against water inflow from its side (end face)
Other than that, no studies have been done on moisture inflow from the end face

Method used

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  • Laminate having moisture barrier properties
  • Laminate having moisture barrier properties
  • Laminate having moisture barrier properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0342] An aqueous solution of polyallylamine as an ionic polymer was prepared.

[0343] Polyallylamine aqueous solution;

[0344] PAA-15C, manufactured by Nittobo Medical Co.

[0345] Solid content, 15%

[0346] In addition, as a hygroscopic agent, the following cross-linked product of polyacrylic acid Na was prepared.

[0347] The cross-linked product of polyacrylic acid Na;

[0348] TAFTIC HU-820E (water dispersion), manufactured by Toyobo Co.

[0349] Solid content, 13%

[0350] The above polyallylamine aqueous solution was diluted with water so that its solid content was 5% by weight to obtain a polymer solution.

[0351] Further, a crosslinking agent solution was prepared by dissolving γ-glycidoxypropyltrimethoxysilane (crosslinking agent) in water so that the amount thereof was 5% by weight.

[0352] Next, the polymer solution and the crosslinking agent solution were mixed together such that the amount of γ-glycidoxypropyltrimethoxysilane was 15 parts by weight rel...

Embodiment 2

[0360] In the same manner as in Example 1, except for forming an AS-WTR layer with a thickness of 8 μm, image 3 Moisture barrier laminate (2) of the layer structure shown.

Embodiment 3

[0362] An ion exchange resin (Amberlite 200CT, produced by Organo Co.) was prepared.

[0363] The Na salt type carboxyl group of polyacrylic acid Na crosslinked product (HU-820E) is converted into H type carboxyl group by using ion exchange resin. Thereafter, by using a 1N potassium hydroxide aqueous solution, a crosslinked product of polyacrylic acid K having a potassium salt type carboxyl group (water dispersion product, solid content: 10%, neutralization rate: 80%) was obtained.

[0364] Except using the cross-linked product of the above polyacrylic acid K as a hygroscopic agent, in the same manner as in Example 1, image 3 Gas barrier laminate (3) of the layer structure shown.

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Abstract

A water barrier laminate 11 including a plastic base material 1 that faces the atmosphere of a high water content, as well as a first inorganic barrier layer 3, a water-trapping layer 5 and a second inorganic barrier layer 7 formed in this order on the plastic base material 1 on the side that does not face the atmosphere of the high water content, wherein an auxiliary water-trapping layer 10 is formed on the second inorganic barrier layer 7 on the side opposite to the water-trapping layer 5 to trap the water from the side surface, the auxiliary water-trapping layer 10 being located on the surface that faces the atmosphere of a low water content or being located in a region at a distance of not more than 20 microns from the surface that faces the atmosphere of the low water content.

Description

technical field [0001] The present invention relates to a moisture barrier laminate having an inorganic barrier layer and 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 barrier layer of silicon oxide or the like by vacuum evaporation on the surface of a plastic substrate is known (Patent Document 1). [0003] In various electronic devices that have been developed and put into practice in recent years and must avoid charge leakage, such as organic electroluminescent (organic EL) devices, solar cells, touch panels and electronic paper, etc., it is necessary to give plastic substrates forming circuit boards High moisture barrier properties of films or films for sealing circuit boards. However, the inorganic barrier layer formed as described above still cannot satisfy the high requirements for obtaining moisture barrier proper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B27/00C23C16/42H01L51/50H05B33/04
CPCB32B2255/10B32B2255/20B32B2255/24B32B2255/26B32B2255/28B32B2307/732B32B2457/00B32B2457/08H01B1/124H01B1/125C23C14/20C23C14/24C23C16/401C23C16/505B32B27/08B32B27/306B32B27/32B32B27/36B32B2307/7246C23C16/42B32B2307/7265B32B2307/726B32B2457/20H10K50/8445B32B9/045C23C16/455
Inventor 南乡瞬也奥山真平森宏太川原成八木泽美理
Owner TOYO SEIKAN GRP HLDG LTD
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