Adhered body with surface protection film

A technology of surface protection film and adherend, which is applied in the direction of film/sheet adhesive, adhesive, adhesive type, etc., which can solve the problems of difficulty in achieving high adhesion rate and poor followability of height difference , to achieve the effect of excellent height difference followability, high adhesion rate and excellent wettability

Active Publication Date: 2021-03-12
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a case, when the surface protective film is temporarily peeled off from the adherend to which the surface protective film is bonded, and then bonded to the adherend again, when the surface level difference of the adherend is large , resulting in the obvious deterioration of the followability of the height difference, and the problem that it is difficult to achieve a high adhesion rate

Method used

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  • Adhered body with surface protection film
  • Adhered body with surface protection film
  • Adhered body with surface protection film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0252] As the polyol, PREMINOL S3011 (manufactured by Asahi Glass Co., Ltd., Mn=10000): 85 parts by weight, SANNIX GP-3000 (manufactured by Sanyo Chemical Industry Co., Ltd.) , Mn=3000): 13 parts by weight, SANNIX GP-1000 (manufactured by Sanyo Chemical Industry Co., Ltd., Mn=1000) as a polyol having 3 OH groups: 2 parts by weight, mixed with a polyfunctional fat as a polyfunctional isocyanate compound Cyclic isocyanate compound CORONATE HX (Nippon Polyurethane Industry Co., Ltd.): 2.7 parts by weight, catalyst (manufactured by Nippon Chemical Industry Co., Ltd., trade name: NāCEM No. 2 iron): 0.04 parts by weight, Irganox 1010 (manufactured by BASF): 0.50 parts by weight Parts, ElexcelAS110 (ionic liquid, manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd.): 1.50 parts by weight, KF6004 (polyether-modified silicone, manufactured by Shin-Etsu Chemical Co., Ltd.): 0.01 parts by weight, ethyl acetate as a diluting solvent: 241 parts by weight were stirred with a disperser to ...

Embodiment 2～8

[0258] As the polyfunctional isocyanate compound, the compounding amount of the polyfunctional alicyclic isocyanate compound CORONATE HX (Nippon Polyurethane Industry Co., Ltd.) was changed as shown in Table 1, except that it was carried out in the same manner as in Example 1, and obtained The adherends "(2a)-(2d)"-"(8a)-(8d)" of the surface protection film.

[0259] The results are shown in Table 1.

Embodiment 9～11

[0261] The compounding amount of the polyfunctional alicyclic isocyanate compound CORONATE HX (Nippon Polyurethane Industry Co., Ltd.) as the polyfunctional isocyanate compound was changed as shown in Table 2, and, as shown in Table 2, meat Isopropyl myristate (manufactured by Kao Corporation, trade name: EXEPARL IPM, Mn=270): 10 parts by weight, except that, it was carried out in the same manner as in Example 1 to obtain an adherend with a surface protective film " (9a)~(9d)"~"(11a)~(11d)".

[0262] The results are shown in Table 2.

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Abstract

An object of the present invention is to provide an adherend with a surface protective film in which the pressure-sensitive adhesive layer side of a surface protective film containing a pressure-sensitive adhesive layer is bonded to a to-be-adhered body with a large surface level difference When the surface protective film is temporarily peeled off from the adherend and the adherend is attached to the adherend again, even the adherend When the surface level difference of the attached body is large, the wettability is also excellent, and the level difference followability is also excellent, so that a sufficiently high adhesion rate can be achieved. Solution: In the adherend with a surface protective film of the present invention, the adhesive layer side of the surface protective film containing an adhesive layer is attached to a substrate having a center line average roughness Ra of 0.2 μm to 2 μm. A part formed on the surface of an adherend, the pressure-sensitive adhesive layer contains a polyurethane-based adhesive containing a polyurethane-based resin as a main component, and the pressure-sensitive adhesive layer is attached to the surface of the adherend only by its own weight. A pressure-sensitive adhesive layer with an adhesion rate of 80% or more.

Description

technical field [0001] The present invention relates to an adherend with a surface protection film. The adherend with a surface protection film of the present invention is, for example, a component in which a surface protection film is bonded to the surface of an optical component or an electronic component. Background technique [0002] Optical parts and electronic parts are usually bonded with a surface protection film on the exposed side in order to prevent surface damage during processing, assembly, inspection, transportation, and the like. Such a surface protection film is peeled off from optical components and electronic components when surface protection is unnecessary. [0003] Such a surface protection film is often used continuously from the manufacturing process of optical parts and electronic parts, through the assembly process, inspection process, transportation process, etc., to the final market. In this case, such a surface protection film is bonded, peeled,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/30C09J7/25C09J175/08C09J11/06C08G18/48C08G18/75
CPCC08G18/4816C08G18/4829C08G18/75C09J11/06C09J175/08C09J2203/326C09J2475/006C09J7/20C08L83/04C08K5/101
Inventor 佐佐木翔悟设乐浩司
Owner NITTO DENKO CORP
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