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Hygroscopic laminate with hygroscopic film

A laminate, hygroscopic technology, applied in the direction of layered products, electric solid devices, semiconductor devices, etc., can solve the problems of reduced power generation efficiency, deterioration of solar cell elements, etc., and achieve the effect of not easy to crack

Inactive Publication Date: 2019-02-01
KYODO INSATU KK KYODO PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it is known that there is a problem that the power generation unit part and the lead part of the solar cell element are degraded by moisture, so that the power generation efficiency decreases over time.

Method used

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  • Hygroscopic laminate with hygroscopic film
  • Hygroscopic laminate with hygroscopic film
  • Hygroscopic laminate with hygroscopic film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0077] "Sample Production"

[0078] LDPE (product name: Petrocene 202R, manufactured by TOSOH CORPORATION, melt flow rate: 24g / 10min, melting point: 106°C) as a thermoplastic resin binder and calcium oxide (CaO, density: 3.35g) as a chemical adsorbent / cm 3 ) is kneaded so that the calcium oxide content is 4 to 40% by volume to obtain a hygroscopic composition. Kneading was performed using LABO PLASTOMILL (manufactured by Toyo Seiki Seisakusho Co., Ltd.).

[0079] LLDPE (product name: EVOLUE-SP2520, manufactured by Prime Polymer Co., Ltd., melt flow rate: 1.9 g / 10 minutes, melting point: 122° C. ). Using a three-layer co-extrusion T-die, the above-mentioned hygroscopic composition and the resin for the skin layer were formed into a film so that the thickness of the hygroscopic layer was 40 μm, and the thickness of the front and back skin layers was 10 μm, respectively, to obtain a hygroscopic film.

[0080] The acrylic adhesive was coated on the hygroscopic film with a wir...

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Abstract

The present invention provides a hygroscopic laminate comprising a hygroscopic film containing a chemical adsorbent that is less likely to be damaged due to bending of a base material or impact when it is dropped, and that can be reprocessed. The hygroscopic laminate of the present invention has a substrate, a hygroscopic film, an adhesive layer for bonding the substrate and the hygroscopic film, the hygroscopic film has a hygroscopic layer containing a thermoplastic resin binder and a chemical adsorbent, and the base The peel adhesive strength Y (N / 25mm) of the aforementioned moisture-absorbing film before moisture absorption starts is represented by the volume expansion rate X (%) of the aforementioned moisture-absorbing film after moisture absorption, and satisfies the following relationship: Y≥0.0011X2+0.058X-0.26 (here, 0

Description

technical field [0001] This invention relates to the hygroscopic laminated body provided with a hygroscopic film and a base material. In particular, the present invention relates to a hygroscopic laminate comprising a hygroscopic film and a substrate that can be easily peeled off after being adhered to a substrate and that are less prone to peeling from the substrate even when the hygroscopic film absorbs moisture. Background technique [0002] In an organic EL device which is a typical example of an electronic device, it is known that a so-called dark spot (non-light-emitting portion) is generated due to the intrusion of moisture into the organic EL element. In addition, it is known that there is a problem that the power generation efficiency of the solar cell element deteriorates over time due to deterioration of the power generation unit portion and lead portion due to moisture. Therefore, hygroscopic materials and the like for absorbing moisture are used in these device...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/18H01L51/50H05B33/04H05B33/14
CPCB32B27/18H05B33/04H05B33/14H10K50/844
Inventor 成田有辉谷口昌小川达也寺田晓
Owner KYODO INSATU KK KYODO PRINTING CO LTD
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