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Film for pressure-sensitive adhesive tape and pressure-sensitive adhesive tape

A pressure-sensitive adhesive tape, pressure-sensitive adhesive technology, applied in the direction of adhesives, adhesive types, chemical instruments and methods, etc., can solve problems such as the inability to maintain anchoring performance, and achieve blocking inhibition, good compatibility, and good follow-up sexual effect

Inactive Publication Date: 2013-04-17
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when a film to which a cross-linked silicone release agent has been coated on the back is applied to a pressure-sensitive adhesive tape, there is a problem that, when stretching the pressure-sensitive adhesive tape, such as stretching, When the layer treated with the cross-linked polysiloxane release agent cannot follow the stretching, it cannot maintain the anchoring (anchoring) performance

Method used

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  • Film for pressure-sensitive adhesive tape and pressure-sensitive adhesive tape
  • Film for pressure-sensitive adhesive tape and pressure-sensitive adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0079] Hereinafter, the present invention is specifically described by way of examples. However, the present invention is by no means limited to these Examples. The term "part" means "part by weight". In addition, the amount of the reagent supplied as a solution is represented by the amount of solid content remaining after the solution evaporates (amount in terms of solid content).

[0080]

[0081] The maximum elongation is measured with an Instron type tensile tester (manufactured by Shimadzu Corporation, Autograph) according to JIS-K-7127. Specifically, a sample having a size of 20 mm wide by 100 mm long was placed with a distance between clamps of 50 mm. Then, the sample was stretched at a tensile speed of 0.3 m / min, and the value of elongation at break was measured.

[0082]

[0083] The modulus of elasticity is measured according to JIS-K-7127.

[0084]

[0085] (observed with TEM)

[0086] Processing was performed so that the cross-section of the peeled layer...

manufacture example 1

[0106] (Manufacturing example 1): Manufacture of plastic film

[0107] Polyvinyl chloride having a degree of polymerization P of 1,050 was produced by a colander method with 27 parts by weight of a DOP plasticizer (bis(2-ethylhexyl) phthalate, produced by J-PLUS Co., Ltd.) soft polyvinyl chloride film. The soft polyvinyl chloride film had a thickness of 70 μm, an elastic modulus (MD) of 250 MPa measured according to JIS-K-7127, and a maximum elongation (MD) of 400% measured according to JIS-K-7127. In addition, the film immediately after production had a surface roughness (arithmetic mean surface roughness Ra) of 0.1 μm.

Embodiment 1

[0109] 60 parts by weight of polysiloxane resin (KS-723A, manufactured by Shin-Etsu Chemical Co., Ltd.), 40 parts by weight of polysiloxane resin (KS-723B, manufactured by Shin-Etsu Chemical Co., Ltd.), 100 parts by weight of acrylic copolymer (methyl methacrylate (MMA) / butyl acrylate (BA) / hydroxyethyl acrylate (HEA)=70 / 30 / 10), 10 parts by weight Parts of tin-based catalyst (Cat-PS3, manufactured by Shin-Etsu Chemical Co., Ltd.) and 1.0 parts by weight of methylhydrogensiloxane-based curing accelerator X92-122 (manufactured by Shin-Etsu Chemical Co., Ltd.) in a solution state mix. Thus, a mixed solution (1) was obtained. The mixing ratio "polysiloxane:(meth)acrylic polymer" between polysiloxane and (meth)acrylic polymer in the mixed solution (1) was 1:1 by weight.

[0110] The mixed solution (1) was applied onto one surface of the soft polyvinyl chloride film prepared in Production Example 1 and dried to form a peeling layer having a thickness of 0.5 μm.

[0111] Thus, a fi...

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Abstract

The invention relates to a film for a pressure-sensitive adhesive tape and the press-sensitive adhesive tape. The non-pressure-sensitive gluing layer is arranged on the substrate film, so that the adherence of film in a coiled form can be inhibited effectively. And the film is not tear down or damaged when the film is unreeled from the coiled form. The non-pressure-sensitive gluing layer and the substrate film have good compatibility and have a good tracing ability for tensile transformation. The invention also provides the press-sensitive adhesive tape including the film for pressure-sensitive adhesive tape. The film for pressure-sensitive adhesive tape includes a stripping layer arranged on the surface of a plastic film. The plastic film has 100 percent maximum elongation according to JIS-K-7127 measurement. The stripping layer includes a mixed layer containing polysiloxane and (methyl) crylic acid polymers.

Description

technical field [0001] The present invention relates to a film for a pressure-sensitive adhesive tape and a pressure-sensitive adhesive tape. Background technique [0002] Typically, the membrane has a smooth surface. When such a film is processed into a roll shape, a phenomenon occurs in which the surfaces of the films come into contact with each other and closely adhere, that is, block. In a roll where blocking occurs, for example, a defect that the operation for unwinding the film becomes difficult may occur. In particular, a film having a large elongation usually has a plasticizer added thereto. In such films, the detrimental effect of blocking is significant because the plasticizer precipitates on the film surface and fills the tiny voids between the film surfaces. When pressure-sensitive adhesive processing is performed on the surface of the film using a pressure-sensitive adhesive, the adverse effect of blocking is more significant because the pressure-sensitive ad...

Claims

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Application Information

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IPC IPC(8): C09J7/02B32B27/08B32B27/30B32B7/06H01L21/78
CPCC09J7/22C09J7/40C09J7/401C09J133/04C09J2203/326C09J2301/302C09J2301/312H01L21/6836H01L2021/6027H01L2021/60277
Inventor 铃木俊隆由藤拓三白井稚人
Owner NITTO DENKO CORP