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Double-sided bonding piece and adhesive composition

A technology of adhesive sheets and compositions, applied in the direction of film/sheet adhesive, adhesive type, ester copolymer adhesive, etc. problem, to achieve the effect of suppressing the possibility of increasing and reducing the phenomenon of warping, and suppressing the amount of exhaust gas generated

Inactive Publication Date: 2015-09-23
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. Therefore, it is required that the double-sided adhesive sheet used in the device does not easily generate outgassing from the adhesive layer.

Method used

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  • Double-sided bonding piece and adhesive composition
  • Double-sided bonding piece and adhesive composition

Examples

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preparation example Construction

[0086] The preparation method of the PSA composition is not limited, and it may be prepared by mixing only the components for forming the PSA 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 the solvent, the solvent may be heated to properly dissolve the components.

[0087] 3. Manufacturing method of double-sided adhesive sheet

[0088] The manufacturing method of the double-sided adhesive sheet which concerns on this embodiment is not specifically limited. A specific example of the manufacturing method of a double-sided pressure-sensitive adhesive sheet is given as follows.

[0089] 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.

[0090] In order to prepare the first laminate, the above-mentioned PSA compositi...

Embodiment 1

[0108] 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 with TDI type crosslinking agent [manufactured by Nippon Polyurethane Industry Co., Ltd., trade name "CORONATE L"] in 100 parts by mass , 75% by mass of solids] 0.225 parts by mass, and a polymerized rosin ester [Arakawa Chemical Industries, Ltd., trade name "Pensel D-125", 100% of solids] with a softening point of 120 to 130°C as a tackifying resin 3.5 parts by mass to prepare an adhesive composition.

[0109] Use a knife coater to apply the adhesive composition in an amount of 25 g / m after drying 2 Coated on the release-treated surface of the first release material (easy-release material) [manufactured by Lintec Corporation, trade name "SP-PET381031"], and heat-dried the obtained coating film at 100°C for about two minutes, thereby The 1st laminated body which formed the pressure-sensitive adhesive layer on the 1st release material w...

Embodiment 2

[0112] A double-sided adhesive tape was produced in the same manner as in Example 1 except that the compounding amount of the tackifier resin in the adhesive composition was changed to 1.75 parts by mass.

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Abstract

The invention provides a double-sided bonding piece which tends not to generate stripping even a bonded surface has a highly-buckling surface and can restrain the increase of exhaust yield. The double-sided bonding piece comprises at least one adhesive layer formed from an adhesive composition containing tackifying resin. The exhaust yield is less than 1.0 microgram / cm<2> based on an n-decane conversion value.

Description

technical field [0001] The present invention relates to a double-sided adhesive sheet, and more specifically, relates to an adhesive sheet that reduces the release of gas components that may adversely affect the operation of components incorporated in hard disks and the like, and has excellent adhesive properties. A compatible double-sided adhesive sheet and an adhesive composition for forming an adhesive layer included in the double-sided adhesive sheet. [0002] In addition, in this specification, the concept of an adhesive tape and the concept of a film are included in a "sheet|sheet". "Components incorporated in equipment" also includes components not directly related to the operation of the equipment, such as display labels. Gas components released from double-sided adhesive sheets attached to components assembled in equipment during the manufacturing process, storage, and / or use are also referred to as "outgassing". Background technique [0003] Devices such as hard ...

Claims

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Application Information

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IPC IPC(8): C09J7/00C09J133/08C09J11/08
Inventor 那须健司土渕晃司
Owner LINTEC CORP
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