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Surface protection sheet

A protective sheet, long-term storage technology, applied in the direction of film/sheet adhesives, adhesives, etc., can solve the problems of increased adhesion, peeling, and poor peelability, and achieve excessive reduction and excellent weather resistance Effect

Inactive Publication Date: 2013-08-21
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, the adhesive force is lowered, and when the surface protection sheet is attached to the adherend for a long time, there is a problem of floating or peeling from the end of the adherend.
[0008] In addition, conventional surface protection sheets do not have sufficient weather resistance, and when used outdoors or stored at high temperatures, there is a problem that the adhesive force increases over time and the peelability when peeled from the adherend deteriorates.

Method used

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  • Surface protection sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] According to the composition table in Table 1, a hydrogenated styrene-isoprene-styrene block copolymer (SEPS) with a hardness of 36 (manufactured by Kuraray, trade name "Septon 2063") and a tackifier resin (Arakawa Chemical Co., Ltd. Industrial Co., Ltd., trade name "Archon P-100"), mixed low-density polyethylene (Ube Maruzen Polyethylene Co., Ltd., UBE polyethylene Z372) and ethylene bisstearamide (NOF Corporation manufactured by Alflo H-50S) and carbon black (Mitsubishi Chemical, carbon black "#45"), and mixed low-density polyethylene (Ube Maruzen Polyethylene Co., Ltd., UBE Polyethylene) Ethylene Z372) and ethylene bisstearamide (manufactured by NOF Corporation, trade name "Alflo H-50S") and white pigment (manufactured by Dainichi Seika Co., Ltd., HCM2035W) Extrusion method and co-extrusion were carried out so that the adhesive layer had a thickness of 15 μm, the middle substrate layer had a thickness of 40 μm, and the back substrate layer had a thickness of 20 μm to...

Embodiment 2

[0071] According to the composition table in Table 1, SEPS (manufactured by Kuraray Co., Ltd., trade name "Septon 2043") and tackifier resin (manufactured by Arakawa Chemical Industry Co., Ltd., trade name "ArchonP-100") were mixed as a binder with a hardness of 38. Except that, it carried out similarly to Example 1, and obtained the surface protection sheet.

Embodiment 3

[0073] According to the composition table in Table 1, SEPS with a hardness of 38 (manufactured by Kuraray, trade name "Septon 2043"), tackifier resin (manufactured by Arakawa Chemical Industry Co., Ltd., trade name "Archon P-100") and ethylene bishard resin were mixed. Adhesive layer made of lipid amide (manufactured by NOF Corporation, trade name "Alflo H-50S"), mixed low-density polyethylene (manufactured by Ube Maruzen Polyethylene Co., Ltd., UBE polyethylene Z372) and carbon black (manufactured by Mitsubishi Chemical, carbon black "#45"), and a back surface made of a mixture of low-density polyethylene (Ube Maruzen Polyethylene Co., Ltd., UBE Polyethylene Z372) and white pigment (Dainichi Seika Co., Ltd., HCM2035W) The substrate layer was coextruded by a three-layer coextrusion method so that the adhesive layer was 15 μm, the middle substrate layer was 40 μm, and the back substrate layer was 20 μm to obtain a surface protection sheet.

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PUM

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Abstract

The invention provides a surface protection sheet. The surface protection sheet is obtained through laminating an adhesive layer on a substrate layer including a polyolefin series resin as a main component, can inhibit the excess reduction of the adhesion even if the surface protection sheet is attached to an adhered object for a long time, and can also prevent the floatation of the surface protection sheet from the adhered object and the peeling of the end portion of the surface protection sheet from the adhered object. There is an appropriate peeling property between the back surface of the substrate layer and the adhesive layer even if there is no peeling layer, so a co-extrusion making method can be utilized, and the surface protection sheet has an excellent weatherability. The surface protection sheet is obtained through laminating the adhesive layer on the substrate layer including the polyolefin series resin as the main component, the substrate layer at least includes a white series layer and a black series layer, the long-term preservation uncoiling force of the surface protection sheet is above 1N / 20mm, and the long-term preservation uncoiling force of the surface protection sheet under a stretching speed of 0.3m / min is below 2N / 20mm.

Description

technical field [0001] The present invention relates to a surface protection sheet. The surface protection sheet of the present invention can be used for lamination on metal sheets, painted metal sheets, aluminum alloy frames, resin sheets, decorative steel sheets, vinyl chloride laminated steel sheets, glass sheets, etc. The use of protecting the surface of these parts, etc. Background technique [0002] When handling, processing, and maintaining metal plates, painted metal plates, aluminum alloy frames, resin plates, decorative steel plates, vinyl chloride laminated steel plates, glass plates, etc., in order to prevent dirt and damage on the surface of these parts, you can Use a surface protector. [0003] Disclosed is an adhesive layer composed of a laminated block copolymer represented by A-B-A (A represents a styrene-based polymer block, B represents a copolymer block of ethylene and butene) and a composition containing a tackifying resin A surface protection sheet m...

Claims

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Application Information

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IPC IPC(8): C09J7/02C09J153/02
Inventor 武田公平生岛伸祐山户二郎
Owner NITTO DENKO CORP