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Reinforcing film with separator

A separator and release layer technology, applied in the direction of pressure-sensitive film/sheet, film/sheet release liner, film/sheet-shaped adhesive, etc., can solve problems such as damage to optical components or electronic components, and achieve Damage mitigation effect

Inactive Publication Date: 2018-01-09
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the spacer is peeled from the reinforcing film having the spacer bonded to the exposed surface side of the optical component, electronic component, etc., there is a problem that peeling electrification occurs to cause damage to the optical component or electronic component

Method used

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  • Reinforcing film with separator
  • Reinforcing film with separator
  • Reinforcing film with separator

Examples

Experimental program
Comparison scheme
Effect test

manufacture Embodiment 1

[0180] [Production Example 1]: Production of (meth)acrylic polymer (1)

[0181] 95 parts by weight of butyl acrylate (manufactured by Nippon Shokubai Co., Ltd.), 5 parts by weight of acrylic acid (manufactured by Toagosei Co., Ltd.), 0.2 parts by weight of 2,2'- Azobisisobutyronitrile (manufactured by Wako Pure Chemical Industries, Ltd.), and 156 parts by weight of ethyl acetate were loaded into a four-necked flask including a stirring blade, a thermometer, a nitrogen introduction tube, and a condenser. While stirring the mixture gently, nitrogen gas was introduced into the flask. While maintaining the temperature of the liquid in the flask at about 63°C, polymerization was performed for 10 hours. Thus, a solution (40% by weight) of a (meth)acrylic polymer (1) having a weight average molecular weight of 700,000 was prepared.

manufacture Embodiment 2

[0182] [Production Example 2]: Production of (meth)acrylic polymer (2)

[0183] 95 parts by weight of cyclohexyl methacrylate (glass transition temperature of homopolymer (polycyclohexyl methacrylate): 66° C.) and 5 parts by weight of acrylic acid serving as a chain transfer agent were used as monomer components. 3 parts by weight of 2-mercaptoethanol, 0.2 parts by weight of 2,2′-azobisisobutyronitrile serving as a polymerization initiator, and 103.2 parts by weight of toluene serving as a polymerization solvent were loaded into a separable flask, and The mixture was stirred for 1 hour while nitrogen gas was introduced into the flask. After oxygen in the polymerization system had been removed as described above, the temperature in the system was raised to 70°C, and the mixture was allowed to react for 3 hours. Further, the mixture was reacted at 75° C. for 2 hours. Thus, a solution (50% by weight) of a (meth)acrylic polymer (2) having a weight average molecular weight of 4,0...

manufacture Embodiment 3

[0184] [Manufacture Example 3]: Manufacture of acrylic adhesive composition (1)

[0185] To the solution of the (meth)acrylic polymer (1) obtained in Production Example 1, TETRAD-C (manufactured by Mitsubishi Gas Chemical Company, Inc.) serving as a crosslinking agent was added. The quantity of this crosslinking agent is 0.075 weight part by solid content with respect to 100 weight part of solid content of the solution of the (meth)acryl-type polymer (1). The mixture was diluted with ethyl acetate so that the total solid content became 25% by weight, followed by stirring with a disperser. Thus, an acrylic adhesive composition (1) containing an acrylic resin was obtained.

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Abstract

There is provided a reinforcing film with a separator that includes a reinforcing film P and a separator Q. The reinforcing film has features that peeling electrification that may occur upon peeling the separator can be suppressed, even when the separator is stripped from the reinforcing film with the separator, the reinforcing film being pre-bonded to an exposed surface side of an optical component and an electronic component, damages on the optical component or the electronic component are reduced. The reinforcing film P includes a base material layer A1 and an adhesive layer A2. The separator Q includes an antistatic release layer B and a base material layer B3. The adhesive layer A2 and the antistatic release layer B are directly laminated. When the separator Q is peeled from the reinforcing film P at a peel angle of 150 DEG and a peel rate of 10 m / min at a temperature of 23 DEG C. and a humidity of 50% RH, the surface of the adhesive layer A2 has peeling electrification voltageof 10 kV or less and the surface of the antistatic release layer B has peeling electromotive voltage of 5.0 kV or less.

Description

technical field [0001] The present invention relates to a reinforcing film having a separator. Background technique [0002] In order to impart rigidity or impact resistance to optical parts, electronic parts, etc., a reinforcing film having a spacer is bonded in advance to the exposed surface side of the optical part, electronic part, etc. in some cases to reinforce such parts ( Japanese Patent Application Laid-Open No. 2014-234460). [0003] However, when the spacer is peeled from the reinforcing film having the spacer bonded to the exposed surface side of the optical component, electronic component, etc., there is a problem that peeling electrification occurs to cause damage to the optical component or electronic component . Contents of the invention [0004] An object of the present invention is to provide a reinforcing film with a separator comprising a reinforcing film and a separator, the reinforcing film having a separator having a feature that the peeling electr...

Claims

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Application Information

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IPC IPC(8): B32B7/12B32B7/06B32B33/00
CPCB32B7/06B32B7/12B32B27/08B32B33/00C09J7/38C09J7/40C09J7/405C09J2301/312
Inventor 佐佐木翔悟设乐浩司徐创矢越智元气
Owner NITTO DENKO CORP