Double-sided adhesive sheet for electronic components

An adhesive sheet, double-sided technology, used in adhesive types, ester copolymer adhesives, polyurea/polyurethane adhesives, etc., which can solve problems such as poor device operation, poor component operation, and difficult exhaust. , to achieve the effect of reducing the possibility of warping, low resilience, and reducing the possibility of exhaust

Active Publication Date: 2017-07-11
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Adhesion of the above-mentioned low molecular weight components to the surface of such a component can lead to poor operation of the component, and even poor operation of the device, so it is required that the double-sided adhesive sheet used in the device is not easy to generate outgassing from the adhesive layer

Method used

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  • Double-sided adhesive sheet for electronic components
  • Double-sided adhesive sheet for electronic components

Examples

Experimental program
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Effect test

preparation example Construction

[0081] The preparation method of the adhesive layer-forming coating material is not limited, and it may be prepared by mixing only the components for forming the adhesive layer, or by mixing the components with a solvent (sometimes also serving as a dispersion medium). When the components for forming the pressure-sensitive adhesive layer include components that should be dissolved in a solvent, the solvent may be heated to properly dissolve the components.

[0082] 3. Manufacturing method of double-sided adhesive sheet

[0083] The manufacturing method of the double-sided adhesive sheet which concerns on this embodiment is not specifically limited. A specific example of a method for producing a double-sided PSA sheet is as follows.

[0084] First, the 1st laminated body and the 2nd laminated body which are both laminated bodies of a release material and an adhesive layer were prepared.

[0085] In order to prepare the first laminate, the above-mentioned coating material for ...

Embodiment 1

[0103] In the cross-linked polymer [BA / MA / ACMO / HEA=83.5 / 2 / 14 / 0.5, weight average molecular weight 600,000, solid content 35% by mass], mixed toluene diisocyanate crosslinking agent [manufactured by Toyo Ink Co., Ltd., trade name "BHS- 8515", solid content 37.5% by mass] 0.45 parts by mass to prepare a coating material for forming an adhesive layer.

[0104] Using a knife coater, apply the adhesive-forming coating material to the release-treated surface of the first release material (easy-release material) [manufactured by Lintec Corporation, trade name "SP-PET381031"], and dry the coated material. The amount of cloth is 25g / m 2 , and heat-dry the obtained coating film at 100° C. for about two minutes to obtain a first laminate in which an adhesive layer is formed on a first release material. Then, a PET film [manufactured by TORAY Industries. Inc., trade name "Lumirror S10"] with a thickness of 12 μm was laminated as a core material on the side of the adhesive layer in the ...

Embodiment 2

[0107] Mix 0.3 parts by mass of toluene diisocyanate-based crosslinking agent [manufactured by Toyo Ink Co., Ltd., trade name "BHS-8515", solid content 37.5 mass%] to prepare a coating material for adhesive formation, in addition , A double-sided adhesive tape was produced in the same manner as in Example 1.

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Abstract

The present invention provides a double-sided pressure-sensitive adhesive sheet. The double-sided pressure-sensitive adhesive sheet of the present invention has a pressure-sensitive adhesive layer including a cross-linked structure formed by the reaction of a cross-linking agent and a cross-linkable polymer. The core material has an adhesive layer laminated on each main surface, wherein the adhesive layer has a residual stress ratio of less than 40%, and the crosslinking agent contains toluene diisocyanate. It is preferable to form the pressure-sensitive adhesive layer at a gel rate of 10% or more and 70% or less. With such a double-sided PSA sheet, even when the adherend has a highly curved surface, peeling is less likely to occur and the possibility of outgassing can be reduced.

Description

technical field [0001] The present invention relates to a double-sided pressure-sensitive adhesive sheet, and more specifically, relates to one that can reduce the possibility of releasing gas components that may adversely affect the operation of components assembled in devices such as hard disks, and has excellent Adhesive double-sided adhesive sheet. [0002] In addition, in this specification, the concept of a tape and the concept of a film are included in a "sheet". "Components incorporated in a device" also includes components not directly related to the operation of the device, such as display panels. The gas component released from the double-sided adhesive sheet attached to the component assembled in the device during the manufacturing process, storage and / or use is also referred to as "outgas". Background technique [0003] Hard disk drives (also referred to as "HDD" in this specification), relays, various switches, connectors, motors, and the like are widely used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02C09J133/00C09J175/04H05K3/28C09J7/10
CPCC09J175/04C09J133/08C09J2203/326C09J2433/00C08G18/6229C08G18/7621C09J7/38C09J7/10C09J2301/124C09J2301/312
Inventor 那须健司森田和明土渕晃司
Owner LINTEC CORP
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