Double-sided pressure-sensitive adhesive sheet for fixing flexible printed circuit board and method for manufacturing the same

A technology of flexible printing and adhesive sheets, applied in the direction of adhesive types, chemical instruments and methods, ester copolymer adhesives, etc., can solve problems such as misoperation of electronic equipment, pollution, and corrosion of electronic components, and improve productivity , low pollution, good processability

Inactive Publication Date: 2012-03-14
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among them, the double-sided adhesive sheet having a silicone-based release liner has the following problems: the silicone compound present in the silicone-based release liner contaminates the adherend, or the silicone Compounds produce siloxane gas to contaminate and corrode electronic components, etc., thereby causing misoperation of electronic equipment and other products

Method used

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  • Double-sided pressure-sensitive adhesive sheet for fixing flexible printed circuit board and method for manufacturing the same
  • Double-sided pressure-sensitive adhesive sheet for fixing flexible printed circuit board and method for manufacturing the same
  • Double-sided pressure-sensitive adhesive sheet for fixing flexible printed circuit board and method for manufacturing the same

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0138] 100 parts by weight of trade name "KS-847H" (manufactured by Shin-Etsu Chemical Co., Ltd., thermosetting addition type polysiloxane, solid content concentration: 30% by weight) and trade name "PL-50T" (manufactured by Shin-Etsu Chemical Co., Ltd. , platinum-based catalyst) 1 part by weight, and added toluene to obtain a silicone-based release treatment agent (solvent-type silicone-based release treatment agent) with a solid content concentration of 1% by weight.

[0139] The above-mentioned silicone-based release treatment agent was applied to one surface of a PET film (trade name "Lumila-S10", manufactured by Toray Co., Ltd., thickness 50 μm) so that the coating amount in terms of solid content was 0.1 g / m 2 , and dried in an oven at 130 °C for 1 min. Afterwards, it was aged at 25° C. for 24 hours, thereby obtaining a PET film having a polysiloxane-based release layer (coating amount of the polysiloxane-based release layer: 0.1 g / m2) on one surface of the PET film. 2 ...

manufacture example 2

[0141] 90 parts by weight of product name "KS-3703" (manufactured by Shin-Etsu Chemical Co., Ltd., thermosetting addition type polysiloxane, solid content concentration: 30% by weight), product name "X-92-183" (Shin-Etsu Chemical Co., Ltd. Co., Ltd., peeling control agent, solid content concentration: 30% by weight) 10 parts by weight and trade name "PL-50T" (manufactured by Shin-Etsu Chemical Co., Ltd., platinum-based catalyst) 1 part by weight were mixed, and toluene was added to obtain a solid content Concentration of 1% by weight of the polysiloxane-based release treatment agent (solvent-type silicone-based release treatment agent), in the same manner as in the above-mentioned production example 1 of the release liner to obtain a polyester film on one surface. Silicone release layer (coating amount of silicone release layer: 0.1g / m 2 ) silicone-based release liner (hereinafter referred to as "release liner b"). In addition, in the following double-sided pressure-sensitive...

manufacture example 3

[0143] As a silicone-based release treatment agent, 100 parts by weight of the product name "SP7265S" (manufactured by Toray Dow Corning Co., Ltd., thermosetting polysiloxane) and 100 parts by weight of the product name "SP7243S" (manufactured by Toray Dow Corning Co., Ltd., platinum 10 parts by weight of a catalyst) was blended to obtain a silicone-based release treatment agent (solvent-free silicone-based release treatment agent).

[0144] The above-mentioned silicone-based release treatment agent was coated on one surface of high-grade laminated paper (trade name "LL-50N", manufactured by Lintec Co., Ltd.) so that the coating amount was 1 g / m 2 , and dried in an oven at 130 °C for 1 min. Afterwards, it was aged at 25°C for 24 hours, whereby one surface of the high-grade laminated paper had a polysiloxane-based release layer (coating amount of the polysiloxane-based release layer: 1 g / m 2 ) of a silicone-based release liner (hereinafter referred to as "release liner c"). I...

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Abstract

Disclosed is a double-sided pressure-sensitive adhesive sheet for fixing a flexible printed circuit board, which has silicone release liners, but is less polluting and excels in workability. The double-sided pressure-sensitive adhesive sheet for fixing a flexible printed circuit board includes at least a pressure-sensitive adhesive unit including a substrate and pressure-sensitive adhesive layers present on or above both sides of the substrate; and silicone release liners present on or above both surfaces of the pressure-sensitive adhesive unit, in which the pressure-sensitive adhesive layers each include an acrylic polymer based on, as an essential monomer component, an alkyl (meth)acrylate whose alkyl moiety being a linear or branched-chain alkyl group having 1 to 14 carbon atoms, the pressure-sensitive adhesive unit has a thickness of 60 [mu]m or less, and the adhesive sheet evolves siloxane gas, if any, in an amount of 1 ng / cm<2> or less when heated at 120 DEG C for 10 minutes.

Description

technical field [0001] The present invention relates to a double-sided adhesive sheet used for fixing a flexible printed circuit board and a method for producing the same. Background technique [0002] At present, in the manufacturing process of hard disk drives (magnetic recording devices: HDD) and the like, a double-sided adhesive sheet (double-sided side pressure sensitive adhesive sheet). [0003] Among them, the double-sided adhesive sheet having a silicone-based release liner has the following problems: the silicone compound present in the silicone-based release liner contaminates the adherend, or the silicone The compound produces siloxane gas to contaminate and corrode electronic components, etc., thereby causing misoperation of products such as electronic equipment. [0004] As a double-sided adhesive sheet that solves the above-mentioned problems, it is known to use a non-silicone release liner that does not contain a silicone compound to improve low-staining pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J133/08C09J7/22C09J7/38
CPCB32B7/10B32B7/12B32B15/08B32B15/20C09J133/00C09J2203/326C09J2433/00B32B5/022B32B7/06B32B27/08B32B27/281B32B27/286B32B27/288B32B27/304B32B27/306B32B27/308B32B27/32B32B27/34B32B29/002B32B2255/10B32B2255/26B32B2307/546B32B2307/56B32B2307/732B32B2457/08C09J7/38C09J7/385C09J7/22Y10T428/24959Y10T156/10C09J2301/124
Inventor 野中崇弘大学纪二桑原理惠
Owner NITTO DENKO CORP
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