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Affixed material for display

A technology for display and stickers, which is applied in display devices, adhesives, instruments, etc., and can solve the problem of entering between the adherend and the micro-suction cup layer.

Inactive Publication Date: 2014-08-20
NITTO DENKO CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, under the situation that the display sticker utilizing the micro-suction cup effect is a large sheet of paper such as a poster, if air enters between the adherend and the micro-suction cup layer during pasting, it must be peeled off before the air can be discharged. tools and techniques

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0172] Hereinafter, although this invention is demonstrated based on an Example, this invention is not limited to these Examples. In addition, normal temperature means 23 degreeC.

[0173] (Molecular Weight Determination)

[0174] The weight average molecular weight was determined by GPC (gel permeation chromatography).

[0175] Device: "HLC-8020" manufactured by Tosoh Corporation

[0176] Column: "TSK gel GMH" manufactured by Tosoh Corporation HR -H (20)"

[0177] Solvent: THF

[0178] Standard material: polystyrene

[0179] (Measurement of average pore diameter)

[0180] The produced foam sheet was cut in the thickness direction using an ultramicrotome, and used as a measurement sample. The cut surface of the measurement sample was photographed at 800 to 5000 magnifications using a low-vacuum scanning electron microscope (manufactured by Hitachi, S-3400N). Using the obtained image, the lengths of the major axes of about 30 pores were measured for arbitrary ranges of ...

manufacture example 1

[0196] [Manufacturing Example 1]: Preparation of Mixed Slurry 1

[0197] Into a reaction vessel equipped with a condenser, a thermometer, and a stirring device, 173.2 of a monomer solution composed of 2-ethylhexyl acrylate (manufactured by Toagosei Co., Ltd., hereinafter abbreviated as "2EHA") as an ethylenically unsaturated monomer was introduced. Parts by weight, 100 parts by weight of ADEKA (registered trademark) pluronic L-62 (molecular weight 2500, manufactured by ADEKA Corporation, polyether polyol) as polyoxyethylene polyoxypropylene glycol, dilaurel as a urethane reaction catalyst Dibutyltin dibutyltin (manufactured by Yoshida Chemical Co., Ltd., hereinafter referred to as "DBTL") 0.014 parts by weight, and hydrogenated xylylene diisocyanate (manufactured by Takeda Pharmaceutical Co., Ltd., TAKENATE600, hereinafter referred to as "HXDI") was added dropwise while stirring. ”) 12.4 parts by weight, reacted at 65°C for 4 hours. In addition, the usage-amount of a polyisoc...

manufacture example 2

[0198] [Manufacturing Example 2]: Preparation of Mixed Slurry 2

[0199] 173.2 parts by weight of a monomer solution composed of 2EHA as an ethylenically unsaturated monomer and ADEKA (registered trademark) pluronic L as polyoxyethylene polyoxypropylene glycol were charged into a reaction vessel equipped with a condenser, a thermometer, and a stirring device. 100 parts by weight of -62 (molecular weight 2500, manufactured by ADEKA Co., Ltd., polyether polyol), 0.014 parts by weight of DBTL as a urethane reaction catalyst, and 12.4 parts by weight of HXDI were added dropwise while stirring. React for 4 hours. In addition, the usage-amount of a polyisocyanate component and a polyol component is NCO / OH (equivalent ratio)=1.6. Then, 5.6 parts by weight of HEA was added dropwise and reacted at 65°C for 2 hours to obtain a hydrophilic polyurethane-based polymer / ethylenically unsaturated monomer mixed slurry having acryloyl groups at both ends. The weight average molecular weight o...

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PUM

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Abstract

The present invention provides a reusable affixed material for a display which has excellent peeling properties. The affixed material for a display has a display base material and a foam layer provided on one side of the display base material which has an interconnected cell structure with through-holes connecting adjacent spherical air pockets. The average diameter of the spherical air pockets is less than 20 [mu]m, and the average diameter of the through-holes is 5 [mu]m or less. The foam layer also has surface openings with an average diameter of 20 [mu]m or less.

Description

technical field [0001] The present invention relates to a sticker for display including a foam layer. Background technique [0002] Display stickers such as memos, stickers, and labels are usually provided with an adhesive layer on one side of the display substrate, and are attached to the adherend through the adhesive layer (for example, Patent Document 1). [0003] However, such stickers for display have a problem that their adhesive force decreases when they are used repeatedly, for example. On the other hand, when peeling from an adherend, there may be a problem of peelability such as adhesive residue. [0004] In response to this problem, a poster with a micro-suction cup has been proposed that utilizes the micro-suction cup effect instead of an adhesive that may contaminate an adherend (for example, Patent Document 2). But, under the situation that the display sticker utilizing the micro-suction cup effect is a large sheet of paper such as a poster, if air enters bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F15/02B32B5/18G09F3/08G09F7/18
CPCG09F7/18G09F2003/0238G09F2003/0232G09F2003/0241C08G18/4854C08G2170/60C08G18/0823B32B5/18B32B2266/06C08G18/6254C08G18/755G09F3/10G09F15/02C08G18/4837C08G18/672C08G18/757C08G2101/00C08G18/00
Inventor 兵藤智纪平尾昭桶结卓司里田良成赤松素明日下部直己
Owner NITTO DENKO CORP
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