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Surface protective sheet

A technology of protective sheet and substrate layer, which is applied in the direction of film/sheet adhesive, adhesive additive, polymer adhesive additive, etc., which can solve the problem of poor adhesion, peeling or cracking, and failure to express adhesion Sexuality and other issues, to achieve high adhesion, adequate and moderate effect

Inactive Publication Date: 2014-04-09
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, the conventional surface protection sheet has the following problems: the adhesiveness to the rough surface is low, for example, in the case of pasting on a SUS hairline board with hairline processing on the surface, peeling or cracking occurs during processing, etc. etc., cannot express sufficient adhesiveness
[0005] Moreover, the existing surface protection sheet has poor adhesive force when peeling off at a low temperature at a high speed, and there is a problem that, for example, in a low temperature environment of about 5°C, the surface protection sheet attached to the adherend will be damaged during processing, etc. Peeling or cracking occurs, and sufficient adhesiveness cannot be exhibited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] Relatively low-density polyethylene (manufactured by Tosoh, trade name: Petrothene 186R, density = 0.924 g / cm 3 ), a white pigment (titanium oxide, manufactured by Dupont, trade name: Ti-PureR103), and a hindered amine light stabilizer (HALS, manufactured by BASF, trade name: Tinuvin783) were blended in the content ratio shown in Table 1 to obtain a white layer-forming material .

[0101] Next, with respect to the low-density polyethylene (manufactured by Tosoh, trade name: Petrothene 186R, density=0.924g / cm 3 ) 85% by weight and linear low-density polyethylene (manufactured by Sumitomo Chemical, trade name: ExcellenFXFX307, density=0.890g / cm 3 ) 10% by weight of carbon black MB (manufactured by Sumika Color, trade name: BlackSPEMB-865, carbon content 20%) 5% by weight was blended to obtain a black layer forming material.

[0102] Furthermore, 82% by weight of HSBR (styrene content = 10% by weight, manufactured by JSR, trade name: Dynaron 1321P) and a tackifier (C 5 s...

Embodiment 2

[0106] The thickness of the black-based layer is set to 45 μm, except that, it is carried out in the same manner as in Example 1 to obtain a surface protection sheet (2) (thickness: white layer) with a three-layer structure (white-based layer / black-based layer / adhesive layer). System layer / Black system layer / Adhesive layer=20μm / 45μm / 5μm).

[0107] The results are shown in Table 1.

Embodiment 3

[0109] The blending ratio of HSBR was set to 80% by weight, and the blending ratio of the tackifier was set to 20% by weight, except that, it was carried out in the same manner as in Example 1, and the three-layer structure (white layer / black layer / Adhesive layer) surface protection sheet (3) (thickness: white layer / black layer / adhesive layer=20 μm / 35 μm / 5 μm).

[0110] The results are shown in Table 1.

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Abstract

The invention provides a surface protective sheet which comprises a substrate layer and an adhesive layer and which exhibits sufficiently and moderately high adhesive force in high-speed peeling even with respect to an adherend having a rough surface and further exhibits sufficiently and moderately high adhesive force even in high-speed peeling at a low temperature. The surface protective sheet provided by the invention comprises the substrate layer and the adhesive layer. An adhesive force of the surface protective sheet with respect to a hairline-processed SUS plate at a temperature of 23 DEG C is 1.0 N / 20mm or more and the adhesive force of the surface protective sheet with respect to a hairline-processed SUS plate at a temperature of 5 DEG C is 1.5 N / 20mm or more, each adhesive force being determined in 180-degree peeling at a tensile rate of 10 m / min.

Description

technical field [0001] The present invention relates to a surface protection sheet. Specifically, the present invention relates to a surface protection sheet including a base material layer and an adhesive layer. The surface protection sheet of the present invention is used, for example, to transport, process or maintain metal plates, painted plates, aluminum alloy frames, resin plates, decorative steel plates, vinyl chloride laminated steel plates, glass plates, etc., polarizing films, optical components such as liquid crystal panels, In the case of electronic parts, etc., it can be used for pasting on the surface of these for protection. The surface protection sheet of the present invention is particularly useful as a surface protection sheet of a SUS hairline board having a hairline finish on the surface. Background technique [0002] The surface protection sheet is usually provided with an adhesive layer on one side of the substrate layer. As a method of producing a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J153/02C09J11/08
Inventor 生岛伸祐武田公平山户二郎
Owner NITTO DENKO CORP
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