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Self-adhesive surface protection film

A surface protection film, self-adhesive technology, applied in the direction of adhesive type, conjugated diene adhesive, hydrocarbon copolymer adhesive, etc., to achieve the effect of excellent processing adaptability

Active Publication Date: 2021-08-03
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The problem to be solved by the present invention is to provide a self-adhesive surface protection film that exhibits strong adhesive force to the covered body and can be used for various covered bodies, and at the same time, when the adhesive film is rolled into a roll It is not easy to cause problems such as local elongation and deformation of the film when it is stored in the state and when the film is sent out later, and the film has excellent processing adaptability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] (Preparation of substrate layer)

[0102] 100% by mass of a homopolypropylene resin (manufactured by Sumitomo Chemical: FLX80E4, 230° C. MFR: 7.5 g / 10 min) was melt-extruded at 240° C. with a 90 mmφ single-screw extruder to obtain a substrate layer.

[0103] (Preparation of adhesive layer)

[0104] Styrene-based elastomer (manufactured by Asahi Kasei Chemicals: TUFTEC (registered trademark) H1221, styrene component ratio 12 mass%, ethylene component ratio 18 mass%, 230°C MFR: 4.5g / 10min) 40 mass%, ethylene-α- Olefin copolymer (manufactured by Sumitomo Chemical: CX3007, 190°C MFR: 3.7g / 10min, flexural modulus of elasticity: 26MPa) 50% by mass and petroleum resin (manufactured by Arakawa Chemical Industry: Alcon (registered trademark) P125) 10% by mass with 40mmφ The adhesive layer was produced by melt extruding at 210° C. with a single screw extruder.

[0105] (production of release layer)

[0106] 90% by mass of propylene-ethylene block copolymer (manufactured by Nip...

Embodiment 2

[0110] The substrate layer and the mold release layer were kept unchanged as in Example 1, and the adhesive layer was changed to the following content, and three types of three-layer unstretched films were obtained by the same manufacturing method as in Example 1.

[0111] (Preparation of adhesive layer)

[0112] Styrene-based elastomer (manufactured by Asahi Kasei Chemicals: TUFTEC (registered trademark) H1221, styrene component ratio 12 mass%, ethylene component ratio 18 mass%, 230°C MFR: 4.5g / 10min) 60 mass% and ethylene-α- Olefin copolymer (manufactured by Sumitomo Chemical: CX3007, 190° C. MFR: 3.7 g / 10 min, flexural modulus of elasticity: 26 MPa) 40% by mass was melt-extruded at 210° C. with a 40 mmφ single-screw extruder to form an adhesive layer.

Embodiment 3

[0114] The substrate layer and the mold release layer were kept unchanged as in Example 1, and the adhesive layer was changed to the following content, and three types of three-layer unstretched films were obtained by the same manufacturing method as in Example 1.

[0115] (Preparation of adhesive layer)

[0116] Styrene-based elastomer (manufactured by Asahi Kasei Chemicals: TUFTEC (registered trademark) H1221, styrene component ratio 12 mass%, ethylene component ratio 18 mass%, 230°C MFR: 4.5g / 10min) 40 mass%, ethylene-α- Olefin copolymer (manufactured by Sumitomo Chemical: VL100, 190°C MFR: 0.8g / 10min, flexural modulus of elasticity: 64MPa) 50% by mass and petroleum resin (manufactured by Arakawa Chemical Industry: Alcon (registered trademark) P125) 10% by mass with 40mmφ The adhesive layer was produced by melt extruding at 210° C. with a single screw extruder.

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Abstract

The present invention provides a self-adhesive surface protection film that exhibits strong adhesive force to a covered body and can be used for various covered bodies, while storing the adhesive film in a roll state and after that When the film is sent out, problems such as local elongation and deformation of the film are less likely to occur, and the film has excellent processing suitability. The self-adhesive surface protection film of the present invention is characterized in that it is formed by laminating an adhesive layer on one side of a substrate layer containing a polypropylene resin and laminating a release layer on the opposite side by coextrusion. The adhesive force is above 800cN / 25mm, and the ratio is 0.003 to 0.18 when the maximum adhesive force to the acrylic plate is used as the denominator and the peeling force of the release layer and the adhesive layer is used as the numerator.

Description

technical field [0001] The present invention relates to a self-adhesive surface protection film (adhesive film). The adhesive film of the present invention can be suitably used for protecting members such as prism sheets used in optical applications, synthetic resin plates (for example, for building materials), stainless steel plates (for example, for building materials), aluminum plates, decorative Surfaces of plywood, steel plates, glass plates, home appliances, precision machinery, and automobile bodies during manufacturing, used to protect items from damage during stacking, storage, transportation, and handling during manufacturing processes, and to protect items from secondary damage Damage during secondary processing (eg bending, pressing). Background technique [0002] Adhesive films for the purpose of protecting the surface of the covered body have been used in the processing, storage, and transportation of building materials, electrical and electronic products, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/24C09J7/30C09J153/02C09J109/06C09J125/10C09J123/08C09J157/02C09J123/12
CPCB32B27/32C09J123/0815B32B2405/00C09J7/243C08L53/025C09J7/24C09J2423/106C09J2423/04C09J2453/00C09J153/025C09J2301/312
Inventor 山本茂知大木祐和松田明
Owner TOYOBO CO LTD