JPH06279738A - Self-adhesive film for treating substrate, self-adhesive film and laminated article - Google Patents

Abstract

PURPOSE:To obtain the film which exhibits excellent stickiness, stability after stucking, appearance, etc., when used in place of an undercoating layer, etc., by successively laminating a release sheet layer, a specific self-adhesive layer, and a film layer. CONSTITUTION:The film is obtd. by successively laminating a release sheet layer, a self-adhesive layer contg. butyl rubber (e.g. a composite layer formed by successively laminating a self-adhesive butyl rubber layer and a self-adhesive acrylic layer), and a film layer. The film is used for forming patterns characters, etc., on the surface of a substrate, such as concrete, in place of a conventionally used undercoating layer such as a sealer. The film is easily stuck to a rough surface and gives a laminated article which does not exhibit slipping down of the film, blistering, nor surface staining of the film due to the self-adhesive layer.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an adhesive film for surface treatment, an adhesive film and a laminated article.

[0002]

2. Description of the Related Art Conventionally, as a method of marking a picture, characters, etc. on the surface of a base material such as concrete, an adhesive film for marking having an acrylic adhesive layer and a synthetic resin layer is attached to the surface of the base material. There is a way.

However, since the surface of a base material such as concrete has large irregularities, a commonly used adhesive film for marking having an acrylic pressure-sensitive adhesive layer thickness of about 50 μm has poor adhesion to the base material. It was impossible to paste. Further, the film thickness of the adhesive layer is, for example, 10
A thick film of about 0 μm or more allows temporary attachment to the concrete surface, but after attachment, the film may slip off due to solar heat, etc., or the film may blister due to gas generation from inside the concrete. Then, there was a drawback that the commercial value of the film was reduced.

It is also conceivable to apply a base coating material such as a sealer to the surface of concrete to smooth the surface or to prevent gas generation by sealing the surface, but the labor for applying this coating And there is a drawback that it takes longer time. Further, there is a drawback that it is difficult to remove this when it is no longer needed.

[0005]

Means for Solving the Problems As a result of intensive studies to solve the above-mentioned problems, the present inventors have decided to use a specific adhesive film for surface treatment instead of conventional surface coating such as a sealer. The present invention has been completed by finding that a film excellent in sticking property, stability after sticking, and appearance can be provided by sticking.

[0006] That is, the present invention is a release sheet layer (hereinafter,
Abbreviated as "sheet layer (a)". ), A pressure-sensitive adhesive layer containing a butyl rubber layer (hereinafter abbreviated as “pressure-sensitive adhesive layer (b)”) and a film layer (hereinafter abbreviated as “film layer (c)”) are sequentially laminated as essential constituents. Adhesive film for base treatment (hereinafter, abbreviated as "base adhesive film (I)") (hereinafter abbreviated as "first invention"), film layer (c) of base adhesive film (I) Adhesive film for upper layer having an acrylic pressure-sensitive adhesive layer and a synthetic resin layer as essential constituent elements on its surface (hereinafter abbreviated as "upper layer adhesive film (I)").
A pressure-sensitive adhesive film obtained by adhering the above (this is abbreviated as “adhesive film (A)”) (hereinafter, abbreviated as “second invention”), sheet layer (a), butyl rubber pressure-sensitive adhesive layer and support. Adhesive film for base treatment, which is formed by sequentially stacking body layers (d) (this is abbreviated as "base adhesive film (II)") (hereinafter abbreviated as "third invention"), base adhesive film ( An adhesive film obtained by attaching the upper adhesive film (I) to the surface of the support layer (d) of II) (
Abbreviated as "adhesive film (B)". ) (Hereinafter abbreviated as “fourth invention”) and a laminate obtained by using these.

First Invention The present invention is a base pressure-sensitive adhesive film (I) having a sheet layer (a), a pressure-sensitive adhesive layer (b) and a film layer (c) as essential constituents.

The sheet layer (a) is used to temporarily protect the pressure-sensitive adhesive layer (b) from sticking to anything other than the base material until it is attached to the base material. The same as that used for this type of product can be used. For example, paper or sheet treated with a known release agent such as silicone, wax, or fluororesin, or other synthetic resin sheet such as polypropylene or polyethylene, which itself has releasability, can be used.

The pressure-sensitive adhesive layer (b) is a layer containing a butyl-based rubber layer, and the butyl-based rubber layer can be easily applied to a rough surface such as concrete. It is a layer that further suppresses the gas generated from the base material and improves the finish property so that the film does not shift. The pressure-sensitive adhesive layer (b) is a single layer of a butyl-based rubber pressure-sensitive adhesive layer and two layers of a butyl-based rubber pressure-sensitive adhesive layer and an acrylic pressure-sensitive adhesive layer, a butyl-based rubber pressure-sensitive adhesive layer, a support layer, and a butyl-based rubber pressure-sensitive adhesive. Three layers, a butyl rubber pressure sensitive adhesive layer, a support layer and an acrylic pressure sensitive adhesive layer, a butyl rubber pressure sensitive adhesive layer,
Multiple layers such as a support layer, a butyl rubber adhesive layer, and an acrylic adhesive layer are included. One side of the butyl rubber pressure-sensitive adhesive layer is always attached so as to be in contact with the sheet layer (a).

As the butyl rubber pressure-sensitive adhesive layer and the acrylic pressure-sensitive adhesive layer, those using a conventionally known pressure-sensitive adhesive can be used.

Further, the support layer is provided between the pressure-sensitive adhesive layers, the film is slid off due to heat, the finish property is deteriorated by the gas generated from the base material, and the butyl rubber is formed of vinyl chloride or the like. It can be used to obtain a film that does not migrate to the surface of the synthetic resin layer and inhibit adhesion such as printing or cause defects such as stains.

The support layer is preferably light and flexible, and includes, for example, fibers such as paper, Japanese paper, non-woven fabric and woven fabric, plastics such as polyester, polyethylene, cellulose, cellophane and polyurethane, and polyurethane and polyethylene. Foams such as Among these supports, non-woven fabrics and foams are preferable.

The thickness of the pressure-sensitive adhesive layer (b) is generally about 0.05 to 0.3 mm when the support layer is not included, and about 0.1 to 3 mm when the support layer is included, preferably Is 0.
It is about 5 to 1 mm.

The film layer (c) makes it possible to attach the upper adhesive film (I), and the film may slip off due to solar heat or the like, and butyl rubber may be used as the surface of the upper adhesive film (I). It is provided so as not to cause adhesion problems such as printing and defects such as stains.

The film layer (c) is not particularly limited as long as it satisfies the above-mentioned requirements, and for example, plastics, metals and their composites (laminate, vapor deposition, etc.) can be used, but preferably. It is preferable to use an aluminum-based film because it has good adhesiveness to the upper adhesive film (I) and is lightweight and inexpensive. The film thickness of the film layer (c) is generally about 10 to 100 μm.

In the present invention as described above, the sheet layer (a) / butyl rubber adhesive layer / film layer (c), sheet layer (a) / butyl rubber adhesive layer / acrylic adhesive layer /
Film layer (c), sheet layer (a) / butyl rubber adhesive layer / support layer / butyl rubber adhesive layer / film layer (c), sheet layer (a) / butyl rubber adhesive layer / support Body layer / Butyl rubber adhesive layer / Film (c), Sheet layer (a) / Butyl rubber adhesive layer / Support layer / Acrylic adhesive layer / Film layer (c) or Sheet layer (a) / A butyl rubber pressure-sensitive adhesive layer / support layer / butyl rubber pressure-sensitive adhesive layer / acrylic pressure-sensitive adhesive layer / film layer (c) is laminated.

Second Invention The present invention is a pressure-sensitive adhesive film (A) obtained by attaching the upper adhesive film (I) to the film layer (c) of the base pressure-sensitive adhesive film (I) of the first invention.

The upper adhesive film (I) has an acrylic adhesive layer and a synthetic resin layer as essential constituent elements, and includes the same adhesive films as conventionally known adhesive films for marking, for example.

Examples of the synthetic resin layer include polyvinyl chloride, polyurethane, polyethylene terephthalate, polybutylene terephthalate, and other resin layers. Among them, they are excellent in workability, sticking property, flexibility and are inexpensive. Polyvinyl chloride is suitable.

In the present invention, a colored printing layer and a clear layer may be formed on the surface of the synthetic resin layer, if necessary.

The upper adhesive film (I) usually has a thickness of about 10 to 60 μm for the acrylic adhesive layer and 10 for the synthetic resin layer.
〜200μm, if necessary, colored printing layer 3〜50μ
The thickness is about m and, if necessary, the clear layer is about 3 to 30 μm.

Third Invention The present invention is a base adhesive film (II) obtained by sequentially laminating a sheet layer (a), a butyl adhesive layer, an acrylic adhesive layer and a support layer (d) if necessary. is there. The above-mentioned layers may be the same as those mentioned above, but in the present invention, it is particularly preferable to use a foam layer as the support layer (d). The butyl-based pressure-sensitive adhesive layer, and optionally the acrylic-based pressure-sensitive adhesive layer and the support layer (d) have the same effects as described above.

Fourth Invention The present invention is a pressure-sensitive adhesive film (B) obtained by attaching the upper adhesive film (I) to the support layer (d) of the base pressure-sensitive adhesive film (II) of the third invention. The same material as described above can be used as the upper adhesive film (I).

Next, a laminated article obtained by using the above-mentioned pressure-sensitive adhesive film of the present invention will be described.

In the laminated article of the present invention, the sheet layer (a) of the pressure-sensitive adhesive film (A) or (B) is peeled off to obtain a film having a pressure-sensitive adhesive layer, and the pressure-sensitive adhesive layer is then applied to a rough surface such as concrete. Which is pressed and attached so as to be bonded to the surface of a base material having a base, and a base adhesive film (I) or (II)
After peeling off the sheet layer (a) to obtain a base film having a pressure-sensitive adhesive layer, the base layer is adhered to the surface of the base material in the same manner as above, and then the film layer (c) of the base adhesive film (I) or The base adhesive film (I) is adhered to the surface of the support layer (d) of the base adhesive film (II).

[0026]

EXAMPLES The present invention will be described in more detail with reference to examples. Base adhesive film Width 5 composed of release sheet layer / adhesive layer including butyl rubber layer (butyl rubber layer / nonwoven fabric layer / butyl rubber layer)
0 mm, 2 mm thick tape (Nitto Denko No. 541
SB470 was used. ) On aluminum film (width 5
0mm, thickness of 0.05mm) and releasable sheet layer /
A base adhesive film composed of a butyl rubber layer / nonwoven fabric layer / butyl rubber layer / aluminum film layer was prepared.

Base Adhesive Film A soft polyolefin foam (manufactured by Mitsui Toatsu Co., Ltd., width 50 mm, thickness 2 mm) was coated with 0.3 butyl rubber adhesive on one side.
To 0.5 mm, then a release sheet (paper impregnated with silicon) is attached to this, and an acrylic adhesive (SK manufactured by Soken Chemical Co., Ltd.) is attached to the other side of the foam. -1310) was applied to have a thickness of 30 μm, and an aluminum film (width 50 mm, thickness 0.05 mm) was attached to the surface of the product, and a releasable sheet layer / butyl rubber layer / foam layer / A base adhesive film composed of an acrylic adhesive layer / aluminum film layer was prepared.

Base Adhesive Film An acrylic adhesive (same as above) layer (thickness 0.03 mm) is formed on one surface of an aluminum film (width 50 mm, thickness 0.05 mm), and then butyl rubber adhesion is applied to this surface. An adhesive layer (thickness 0.5 mm) is formed, and a release sheet is further attached to form a base adhesive film composed of a release sheet layer / butyl rubber adhesive layer / acrylic adhesive layer / aluminum film layer. Created.

Base adhesive film A release sheet is attached to a butyl rubber adhesive layer (0.5 mm) formed on a foam (similar to the above) and a release sheet / butyl rubber adhesive layer / foam is formed. A base adhesive film composed of layers was prepared.

Base Adhesive Film A release sheet layer (thickness: 0.05 mm) / acrylic adhesive layer (thickness: 0.05 mm) / polyvinyl chloride resin layer (thickness: 0.1 mm) was used.

Base Adhesive Film The same as the base adhesive film was used except that the acrylic adhesive film layer had a thickness of 0.1 mm.

Base Adhesive Film A tape having an adhesive layer containing a releasable sheet layer / butyl rubber layer used in the base adhesive film was used.

Adhesive Films (a) to (g) An acrylic adhesive layer (thickness 0.03 mm) / on the surface (the surface opposite to the release sheet layer) of the base adhesive film.
A top adhesive film composed of a polyvinyl chloride resin layer (thickness: 0.1 mm) was attached to obtain a base adhesive film, followed by adhesive films (a) to (g).

Examples 1 to 4 Adhesives exposed by peeling off the releasable sheets of the adhesive films (a) to (g) on a mortar plate (made by Nippon Test Panel Co., Ltd., having a thickness of 10 mm) The layers were joined and laminated together using a squeegee.

Example 5 A base adhesive film was attached to a mortar plate (the same as above), and then the upper adhesive film was attached.

Comparative Examples 1 to 3 Adhesive films (e) to (g) were used to adhere to mortar plates in the same manner as in Example 1. The results of Examples and Comparative Examples are summarized in Table 1.

Performance Test Initial Adhesion Strength: Measured using an autograph (manufactured by Shimadzu) at a measurement temperature of 20 ° C. and a film width of 25 mm. (Adhesiveness 2,
Those of 000 g or more are good. ) Water resistance: A test piece immersed in tap water at 40 ° C. for 168 hours was used. The adhesive strength was measured by the same method as above.
The appearance was evaluated by observing the entire test piece taken out from water. Heat resistance: The test piece was kept at 90 ° in a hot air oven adjusted to 80 ° C for 168 hours, cooled to 20 ° C, and evaluated for appearance and adhesion (same method as above). It was

[0038]

[Table 1]

[0039]

EFFECTS OF THE INVENTION Since the present invention has the above-described structure, it can be easily attached to a rough surface, and after the attachment, the film slips off or blisters, It has a remarkable effect that the surface of the film is not stained by the adhesive.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location B32B 27/00 8413-4F

Claims (10)

[Claims] 1. A pressure-sensitive adhesive film for base treatment, comprising a release sheet layer, a pressure-sensitive adhesive layer containing a butyl rubber layer, and a film layer, which are sequentially laminated as essential constituents. 2. The pressure-sensitive adhesive film for surface treatment according to claim 1, wherein the pressure-sensitive adhesive layer containing a butyl rubber layer is composed of a plurality of layers obtained by sequentially laminating a butyl rubber pressure-sensitive adhesive layer and an acrylic pressure-sensitive adhesive layer. . 3. The pressure-sensitive adhesive layer containing a butyl-based rubber layer is constituted by a multi-layer formed by sequentially laminating a butyl-based rubber pressure-sensitive adhesive layer, a support layer and a butyl-based rubber pressure-sensitive adhesive layer. Adhesive film for surface treatment. 4. The underlayer according to claim 1, wherein the pressure-sensitive adhesive layer containing the butyl-based rubber layer is composed of a plurality of layers in which a butyl-based rubber pressure-sensitive adhesive layer, a support layer and an acrylic pressure-sensitive adhesive layer are sequentially laminated. Adhesive film for processing. 5. A pressure-sensitive adhesive layer containing a butyl-based rubber layer is composed of a multi-layer obtained by sequentially laminating a butyl-based rubber pressure-sensitive adhesive layer, a support layer, a butyl-based rubber pressure-sensitive adhesive layer and an acrylic pressure-sensitive adhesive layer. The pressure-sensitive adhesive film for surface treatment according to claim 1. 6. A pressure-sensitive adhesive film for landing, which has an acrylic pressure-sensitive adhesive layer and a synthetic resin layer as essential constituents, is attached to the surface of the metal film layer of the pressure-sensitive adhesive film for surface treatment according to claim 1. Adhesive film attached. 7. An adhesive film for undercoating, which comprises a release sheet layer, a butyl rubber adhesive layer, an acrylic adhesive layer and a support layer, which are laminated in this order. 8. A pressure-sensitive adhesive film obtained by sticking a top-layer pressure-sensitive adhesive film having an acrylic pressure-sensitive adhesive layer and a synthetic resin layer as essential constituents on the surface of a support layer of the pressure-sensitive adhesive film for base treatment according to claim 7. . 9. The roughening surface is obtained by peeling off the pressure-sensitive adhesive film for surface treatment according to claim 1 or the release sheet layer of the pressure-sensitive adhesive film to obtain a film having the pressure-sensitive adhesive layer on the surface. A laminated article which is attached to a base material having the same. 10. A rough surface is obtained after peeling off the release sheet layer of the pressure-sensitive adhesive film for surface treatment according to claim 1 to obtain a film having the pressure-sensitive adhesive layer on the surface. Affixed to the base material, and then affixed the adhesive film for the upper layer, which requires the acrylic adhesive layer and the synthetic resin layer as the essential constituents, on the surface opposite to the adhesive layer of the affixed adhesive film for surface treatment. Laminated article.