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Method and apparatus for separating two adhered plates, and pressure-sensitive adhesive sheet

A technology of pressure-sensitive adhesive sheets, silicone pressure-sensitive adhesive sheets, applied in the direction of bonding methods, pressure-sensitive films/sheets, adhesives, etc.

Inactive Publication Date: 2013-01-30
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the glass plate with the transparent electrodes cannot be separated from the transparent protective plate without breaking or cracking (it cannot be separated for reuse)

Method used

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  • Method and apparatus for separating two adhered plates, and pressure-sensitive adhesive sheet
  • Method and apparatus for separating two adhered plates, and pressure-sensitive adhesive sheet
  • Method and apparatus for separating two adhered plates, and pressure-sensitive adhesive sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0204]

[0205] Prepare slurry mixture 1

[0206] The monomer solution was put into a reaction vessel with a condenser, a thermometer and a stirrer, and hydrogenated xylylene diisocyanate (manufactured by Takeda Pharmaceutical Company Limited, Takenate 600, hereinafter abbreviated as "HXDI", 12.4 parts by weight) so that the mixture was reacted at 65° C. for 4 hours, the monomer solution containing 2-ethylhexyl acrylate (produced by TOAGOSEI CO. , LTD.), hereinafter abbreviated as "2EHA", 173.2 parts by weight), ADEKA (registered trademark) pluronic L-62 (molecular weight 2500, manufactured by Adico Corporation, polyether polyol) as polyoxyalkylene polypropylene glycol , 100 parts by weight) and dibutyltin dilaurate (manufactured by KISHIDA CHEMICAL Co., Ltd., hereinafter abbreviated as "DBTL", 0.014 parts by weight) as a polyurethane catalyst. The content ratio of the polyisocyanate component to the polyol component used was NCO / OH (equivalent ratio)=1.6. Thereafter, 2-hy...

Embodiment 2

[0210]

[0211] Except for using IBXA instead of 2EHA as the unsaturated ethylene monomer, in the same manner as in Example 1 to prepare the slurry mixture, a hydrophilic polyurethane polymer / unsaturated ethylene polymer having acryloyl groups on both ends was obtained. A slurry mixture of monomers. The obtained hydrophilic polyurethane polymer had a weight average molecular weight of 15,000. 2EHA (38.6 parts by weight), IBXA (55.1 parts by weight) and AA (10.7 parts by weight) were added to 100 parts by weight of the obtained hydrophilic polyurethane polymer / unsaturated ethylene monomer slurry mixture to provide hydrophilic polyurethane Polymer / Ethylenically Unsaturated Monomer Slurry Mixture 2.

[0212] Except using the hydrophilic urethane polymer / unsaturated ethylene monomer slurry mixture 2 obtained as above instead of the hydrophilic urethane polymer / unsaturated ethylene monomer slurry mixture 1 and using NK ester A-HD-N (16 parts by weight) and UA (47.6 parts by wei...

Embodiment 3～5、 comparative example 1～2

[0230] The above slip resistance evaluation test was carried out using the pressure-sensitive adhesive sheets for fixing shown in Table 2 below instead of the porous pressure-sensitive adhesive sheets.

[0231] Table 2

[0232]

Pressure sensitive adhesive sheet for fixing

Anti-slip evaluation results

Example 1

Porous pressure sensitive adhesive sheet A

⊙

Example 2

Porous pressure sensitive adhesive sheet B

○

Example 3

N-300

⊙

Example 4

No.3630H

○

Example 5

TRN-6250L

○

Comparative example 1

No.5000NS

×

Comparative example 2

dashboard storage slice

×

[0233] In Table 2, "N-300" is a silicone pressure-sensitive adhesive sheet (trade name "N-300", manufactured by NITTO DENKO CORPORATION), and "No. 3630H" is a silicone pressure-sensitive adhesive sheet Pressure-sensitive adhesive sheet (trade name "No.3630H", manufactured by Nitto Denko C...

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Abstract

Provided is a method of reusably separating two adhered plates, including step 1 for firmly adhering two plates adhered to each other via a pressure-sensitive adhesive sheet or a curable resin layer to a first jig and a second jig, respectively, step 2 for detaching the two plates by moving at least one of the first jig and the second jig to produce a shear stress causing breakage of the pressure-sensitive adhesive sheet or the curable resin layer, and step 3 for removing the two plates after detachment from the jigs, wherein, in the aforementioned step 1, one or both of the plates is(are) firmly adhered to the jig(s) via a silicone pressure-sensitive adhesive sheet or porous pressure-sensitive adhesive sheet. Using the method, two plates adhered to each other via a pressure-sensitive adhesive sheet or a curable resin layer can be stably and reusably detached by certainly fixing them by using jig fixtures.

Description

technical field [0001] The present invention relates to a method for reusably separating two boards bonded to each other by a pressure-sensitive adhesive sheet or a curable resin layer without breaking or cracking the boards, and to an apparatus and devices for the method Pressure sensitive adhesive sheet. Background technique [0002] In recent years, portable devices with display functions such as mobile phones, portable information terminals (PDA: Personal Digital Assistants), portable game devices, car navigation systems, etc. Such as liquid crystal displays, etc. are also required to be thinner. Therefore, for example, the display panel of a flat panel display incorporated into such a portable device having a display function is designed to be further thinner, and the transparent protective plate of the display panel, when it is a glass plate, is also considered to be made of It is thinner than 1.0mm. However, when such a thin display panel and its transparent protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B38/10C09J7/00C09J183/04
CPCB32B43/006B32B2457/20C09J5/00C09J2203/318C09J2205/302C09J2483/00Y10T156/1702C09J2301/502C09J7/22C09J7/30C09J7/38C09J2301/40C09J2301/50C09J2301/302
Inventor 藤田雅人平尾昭
Owner NITTO DENKO CORP
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