JP2005105257A - Pressure-sensitive adhesive sheet for coating and repairing use - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive sheet for coating and repairing use, capable of easily and beautifully finishing a scar formed on a coated surface of an automotive body, and the like. <P>SOLUTION: This pressure-sensitive adhesive sheet 4 for coating and repairing use has a pressure-sensitive adhesive layer 2 on one of surfaces of a substrate 1. The substrate 1 preferably has opacifying properties. Further, it is preferable that the substrate 1 is so structured as to have an opacifying layer 12 composed of a binder component and an opacifying pigment on at least one of surfaces of a plastic film 11. Furthermore, it is preferable that the substrate 1 has a colorant layer 3 on the other surface of the substrate 1 than the surface having the pressure-sensitive adhesive layer 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a technique for repairing a painted surface of an automobile body or the like, and more particularly to a technique for repairing a painted surface that allows a general user to easily repair a beautifully finished finish on a scratch formed on the painted surface.

  Conventionally, as a repair article for repairing a scratch formed on a painted surface of an automobile body or the like, a repair paint corresponding to the body color is generally marketed and widely used by general users.

  As a method of repairing the scratched part using such a repair paint, for example, after scratching the scratched part with sandpaper or the like (to remove dirt inside the wound or the coating of the scratched part), the undercoat paint (To improve the adhesion of the repair paint and prevent rusting of the body), then apply the repair paint on it, and then polish the repaired part with sandpaper etc. (make the repaired part smooth and inconspicuous) For example). However, for the reasons described below, there is generally a sense of resistance when a general user directly applies a repair paint to the body of an automobile.

That is, such a repairing method has a problem that when the undercoating paint or the repairing paint is applied with a brush, uneven thickness is likely to occur and it is difficult to finish it with a uniform color. In addition, since the thickness unevenness is unlikely to occur, the paint is applied by a spray method. However, when such a means is used, the paint is applied around the wound portion so that the paint does not protrude from the wound portion. Unnecessary parts must be masked, which is a complicated task. In addition, even if a portion that does not require application is masked around the scratched portion, there is a problem that the paint adheres to other portions that do not require application due to the influence of wind or the like. Furthermore, the work of polishing the repaired part with sandpaper and finishing it beautifully is complicated, and even the painted surface other than the part to be polished may be polished, so the finish is not always beautiful.
JP 2000-153228 A (Prior Art)

  Then, an object of this invention is to provide the adhesive sheet | seat for a paint repair which can finish the damage | wound formed in the painted surfaces, such as the body of a motor vehicle, easily beautifully.

  The pressure-sensitive adhesive sheet for paint repair according to the present invention is characterized by having an adhesive layer on one surface of a support.

  Preferably, the support has a concealing property.

  Preferably, the support has a concealing layer comprising a binder component and a concealing pigment on at least one surface of the plastic film.

  Preferably, the pressure-sensitive adhesive layer has removability.

  Preferably, the surface of the support that does not have an adhesive layer is subjected to an easy adhesion treatment.

  Preferably, a color material layer is provided on the surface of the support that does not have an adhesive layer.

  Preferably, the adhesive layer contains a vaporizable rust inhibitor.

  The pressure-sensitive adhesive sheet for painting repair according to the present invention has a pressure-sensitive adhesive layer on one side of the support, so that scratches formed on the painted surface of the body of an automobile are easily rusted by rain and deteriorated by ultraviolet rays. Can be protected. Moreover, it can finish beautifully easily by having a color material layer in the surface which does not have the adhesion layer of the said support body.

  The pressure-sensitive adhesive sheet for coating repair according to the present invention has a pressure-sensitive adhesive layer on one surface of a support. By adopting such a configuration, a user such as a general user can apply a desired repair paint to the surface of the support that does not have the adhesive layer, and this is formed on the painted surface. By pasting on the wound part, the wound part can be repaired easily and with a beautiful finish. Moreover, by using a coating repair adhesive sheet having a color material layer in advance on the surface of the support that does not have an adhesive layer, the damaged portion can be repaired more easily and with a beautiful finish. Hereinafter, embodiments of each component will be described.

  The support used in the present invention is not particularly limited, and examples thereof include polyester, polycarbonate, polypropylene, polyethylene, polyarylate, acrylic, acetylcellulose, polyamide, polyimide, polyvinyl chloride, and vinylidene chloride-vinyl chloride copolymer. A plastic film can be used. Such a support preferably has a concealing property in order to prevent the scratched portion from being seen through when the coating repair adhesive sheet is applied to the scratched portion. Specifically, in JIS K7605: 1976 The optical density is 0.5 or more, preferably 0.7 or more, more preferably 1.0 or more. As such a support, for example, a plastic film containing a pigment having a concealing property (hereinafter referred to as a “concealing pigment”) (FIG. 1), and having a concealing layer on at least one surface of the plastic film (FIGS. 2 and 3).

  Specifically, the support as shown in FIG. 1 is obtained by melting the plastic and adding a concealing pigment to form a film.

  The concealable pigment contained in such a plastic may be white, black, or gray as long as it can provide concealment when used as a support. Examples of such concealing pigments include calcium carbonate, magnesium carbonate, aluminum hydroxide, magnesium hydroxide, titanium oxide, calcium sulfate, barium sulfate, calcined alumina, calcium silicate, silica, alumina, kaolin, perlite, talc, Examples include mica, aluminum, zinc, zinc oxide, tin oxide, zirconia, carbon, and the like, and these can be used alone or in combination of two or more.

  In addition, the shape of the particles of the concealing pigment is not particularly limited, and may be any shape such as an indefinite shape, a true spherical shape, a spherical shape, a scale shape, and a needle shape. The major axis of the particles of such a concealing pigment is not particularly limited, but is preferably smaller than the thickness of the plastic film containing the concealing pigment.

  The content of the concealable pigment contained in such a plastic film is not particularly limited, and the concealability obtained varies depending on the thickness of the plastic film. The amount is preferably about 1 to 20 parts by weight with respect to parts by weight. By setting it as such a range, sufficient concealment property, specifically, the optical density in JIS K7605: 1976 can be 0.5 or more while maintaining physical strength.

  The thickness of such a support is not particularly limited, but considering the finish after repair, that is, the finish after applying the repair adhesive sheet of the present invention to the scratched part, the thickness of the repair adhesive sheet should be as thin as possible Therefore, it is preferable that the thickness of the support is as thin as possible. However, considering the handleability, ease of sticking, etc. of the coating repair adhesive sheet, the lower limit is 10 μm or more, preferably 20 μm or more, and the upper limit is 150 μm or less, preferably 100 μm or less.

  Further, such a support, that is, a plastic film containing a concealing pigment, improves the adhesion to the pressure-sensitive adhesive layer and the color material layer on at least one surface, preferably both surfaces of the support. Therefore, it is preferable to use a material that has been subjected to an easy adhesion treatment such as a plasma treatment, a corona discharge treatment, a far-ultraviolet irradiation treatment, or an undercoat easy adhesion layer formation (FIG. 4).

  In addition, such a support preferably has ultraviolet absorbing performance in order to suppress deterioration of the adhesive layer and the scratched part by ultraviolet rays. For example, the above plastic film contains a benzophenone-based or benzotriazole-based ultraviolet absorber. It is preferable to use a resin layer or a resin layer containing the ultraviolet absorber on at least one surface of the support. In addition, as long as the object of the present invention is not impaired, the above-mentioned plastic film is made of other pigments, dyes, colorants, antistatic agents, flame retardants, fungicides, rust inhibitors, light stabilizers, and antioxidants. It may contain additives such as an agent, a plasticizer, a leveling agent, a flow regulator, an antifoaming agent and a dispersant.

  Next, the support as shown in FIGS. 2 and 3 specifically has a concealing layer comprising a binder component and a concealing pigment on at least one surface of the plastic film.

  As the plastic film, the same kind as described above can be used, and it may or may not contain a concealing pigment. Such a plastic film has a plasma treatment, a corona discharge treatment, a deep ultraviolet ray on at least one surface, preferably both surfaces, in order to improve the adhesion between the hiding layer, the color material layer, or the adhesive layer and the plastic film. It is preferable to use a material that has been subjected to an easy adhesion treatment such as irradiation treatment or formation of an undercoat easy adhesion layer (FIG. 5). The thickness of the plastic film is not particularly limited, but considering the thickness of the repair adhesive sheet, that is, the finish after repair, the lower limit is 5 μm or more, preferably 15 μm or more, and the upper limit is 100 μm or less, preferably 50 μm or less. And

  Examples of the binder component constituting the concealing layer include polyester resin, urethane resin, acrylic resin, polycarbonate resin, epoxy resin, cellulose resin, acetal resin, vinyl resin, polyethylene resin, and polystyrene resin. Examples thereof include thermoplastic resins such as resins, polypropylene resins, polyamide resins, polyimide resins, melamine resins, phenol resins, silicone resins, and fluorine resins, thermosetting resins, and ionizing radiation curable resins. Of these, thermosetting acrylic resins are preferred in terms of excellent compatibility with concealing pigments, weather resistance, and solvent resistance. Especially, when acrylic resins having a large hydroxyl value are used, a large amount of concealing pigments are used. It can be added, and even if the thickness of the concealing layer is reduced, a concealing layer having sufficient concealing properties can be obtained, which is preferable. The crosslinking agent for crosslinking and curing such a thermosetting resin is not particularly limited, and for example, an isocyanate crosslinking agent, an epoxy crosslinking agent, an imine crosslinking agent, and a metal chelate can be used.

  Next, as the concealing pigment contained in the concealing layer, the same concealing pigment as that contained in the plastic film described above can be used. The content of the concealing pigment in the concealing layer is not particularly limited, and since it varies depending on the concealing property of the plastic film and the thickness of the concealing layer, it cannot be said unconditionally, but with respect to 100 parts by weight of the binder component, 50 parts by weight or more, preferably 75 parts by weight or more, and the upper limit is 200 parts by weight or less, preferably 150 parts by weight or less. By setting it as such a range, sufficient concealing property, specifically, the optical density in JIS K7605: 1976 can be made 0.5 or more while maintaining the physical strength of the concealing layer.

  The thickness of the concealing layer is not particularly limited, but is preferably as thin as possible in consideration of the finish after repair. In consideration of concealment properties when used as a pressure-sensitive adhesive sheet for coating repair, the lower limit is 2 μm or more, preferably 5 μm or more. And the upper limit is 50 μm or less, preferably 25 μm or less.

  Further, in such a concealing layer and plastic film, as in the case of the plastic film containing the concealing pigment described above, an ultraviolet absorber, a dye, a pigment, and a colorant as long as the object of the present invention is not impaired. , Additives such as antistatic agents, flame retardants, antifungal agents, rust inhibitors, light stabilizers, antioxidants, plasticizers, leveling agents, flow regulators, antifoaming agents, dispersants, etc. may be used. .

  Such a support (FIGS. 2 and 3) is prepared by dissolving or dispersing a binder component, a concealing pigment, a crosslinking agent and other additives added as necessary in a solvent to prepare a coating solution for the concealing layer. , Applied to at least one surface of the above-mentioned plastic film by a conventionally known coating method such as bar coater, die coater, blade coater, spin coater, roll coater, gravure coater, flow coater, spray, screen printing, etc. Then, it can be produced by crosslinking and curing by heating or irradiation with ionizing radiation as necessary.

  Next, the adhesive layer is formed from at least an adhesive component. The adhesive component is not particularly limited, and natural resin-based adhesives, synthetic resin-based adhesives, etc. are used, and synthetic resin-based adhesives such as acrylic-based adhesives, silicone-based adhesives, urethane-based adhesives, etc. Agents are preferably used. Among these, a cross-linkable pressure-sensitive adhesive is preferred from the viewpoint of weather resistance, hardly causing cohesive failure, and easy control of the adhesive strength, and a cross-linkable acrylic pressure-sensitive adhesive is particularly preferably used from the viewpoint of ease of handling. It is done.

  Moreover, the adhesive layer may have removability. By giving the adhesive layer re-peelability, for example, after repairing it yourself using the paint repair adhesive sheet of the present invention, even when requesting repairs to a repair shop etc., the paint repair adhesive sheet can be easily Can be peeled off.

  The cross-linking agent used for the adhesive layer is not particularly limited, and the same ones that can be used for the above-described concealing layer can be used. However, in the case of the structure of FIG. It is preferable to use one of a variety. By using different types of cross-linking agents for the concealing layer and the pressure-sensitive adhesive layer in this way, it is possible to prevent the cross-linking agent from affecting other layers regardless of whether the cross-linking and curing of each layer is completed. Can be kept constant.

  The thickness of the pressure-sensitive adhesive layer is not particularly limited, but it is preferably thinner considering the finish after repair, and from the viewpoint of relaxing unevenness due to the scratched portion by the pressure-sensitive adhesive layer, the lower limit is 5 μm or more, preferably 10 μm or more. As 250 μm or less, preferably 100 μm or less.

  In the adhesive layer, in addition to the adhesive component and the crosslinking agent, the above-described concealing pigments, other pigments, dyes, colorants, antistatic agents, flame retardants, fungicides, rust inhibitors, UV absorbers, light You may add additives, such as a stabilizer, antioxidant, a plasticizer, a leveling agent, a flow regulator, an antifoamer, and a dispersing agent. However, the addition amount of these additives is preferably in a range that does not hinder the effect of the adhesive layer.

  In particular, a vaporizable rust inhibitor is preferably used as the rust inhibitor. By using a vaporizable rust preventive agent, for example, when a slight gap occurs between the adhesive sheet for repairing the coating and the adherend due to physical impact or poor construction, etc., usually from there Moisture and oxygen enter and rust is generated, but in the present invention, since the rust preventive component of the vaporizable rust preventive agent is vaporized in the gap, the generation of rust can be suppressed.

  Examples of such a vaporizable rust preventive include nitrites of amines, carboxylates, carboxylic esters and mixtures thereof, and specifically include dicyclohexylammonium nitrite, diisopropylammonium nitrite, dicyclohexylammonium carboxyl. Water-soluble vaporizable rust preventives such as acid salts and nitronaphthalene ammonium nitrite, and oil-soluble vaporizable rust preventives such as dicyclohexylammonium caprylate and dicyclohexylammonium laurate.

  Since the content of such a vaporizable rust preventive varies depending on the type of pressure-sensitive adhesive used, it cannot be generally stated, but the lower limit is 0.01 parts by weight or more, preferably 0 with respect to 100 parts by weight of the pressure-sensitive adhesive. The upper limit is 10 parts by weight or less, preferably 5 parts by weight or less. By setting the content of the vaporizable rust inhibitor to 0.01 parts by weight or more, the rust preventive effect can be made sufficient, and by setting the content to 10 parts by weight or less, the adhesive layer has removability. If it is, the adhesive layer can be prevented from causing adhesive residue.

  Such a pressure-sensitive adhesive layer is prepared by dissolving or dispersing a pressure-sensitive adhesive component, a crosslinking agent, and an additive added as necessary in a solvent to prepare a pressure-sensitive adhesive layer coating solution. According to the coating method, after coating and drying on one surface of the above-mentioned support, it can be produced by crosslinking by heating as necessary. Moreover, after apply | coating and drying the said coating liquid for adhesion layers on a separator etc. and laminating on one side of the support body which has concealability, it can also produce by making it bridge | crosslink by heating as needed.

  Moreover, it is preferable that the coating repair adhesive sheet of this invention has a color material layer previously in the surface which does not have the adhesion layer of a support body. Thus, by using the pressure-sensitive adhesive sheet for paint repair having the color material layer in advance, the damaged part can be repaired more easily to a beautiful finish. (FIG. 6).

  Such a color material layer is obtained by applying a desired coating material (coating material having the same color as that to be repaired) by a conventionally known coating method similar to the above-described concealing layer, on the side not having the above-mentioned support adhesive layer. It can be formed by coating and drying.

  The hiding layer, the adhesive layer, and the color material layer described above may be formed in any order.

  Examples of the method for repairing the coating using the adhesive sheet for repairing a coating according to the present invention include, for example, a paint having the same color as that of the adhesive to be repaired in advance on the surface having no adhesive layer of the adhesive sheet for repairing a coating according to the present invention. After applying and drying with a brush or spray, etc., cut it into an appropriate size for the scratched part, and then polish the damaged part with sandpaper to the extent that the adhesive repair sheet does not protrude It can be repaired by applying the coating repair adhesive sheet to the scratched part.

  In addition, as a method of performing coating repair using a coating repair adhesive sheet having a color material layer on the side having no adhesive layer of the support, for example, the coating repair adhesive sheet of the present invention is used. It can be repaired by cutting the wound part into an appropriate size, polishing the wound part with sandpaper, and then sticking the coating repair adhesive sheet to the wound part.

  As described above, according to the pressure-sensitive adhesive sheet for repairing a coating of the present invention, by having the pressure-sensitive adhesive layer on one surface of the support, the user desires the surface that does not have the pressure-sensitive adhesive layer of the support. By applying this paint to the scratched part formed on the painted surface, the scratched part is protected from rust due to rain, deterioration due to ultraviolet rays, etc., and easily repaired to a beautiful finish be able to.

  In addition, by making a coating repair adhesive sheet having a color material layer in advance on the side of the support that does not have an adhesive layer, the scratched part can be repaired more easily to a beautiful finish (see FIG. 6).

  Hereinafter, the present invention will be described in more detail based on examples. In this example, “parts” and “%” are based on weight unless otherwise specified.

[Example 1]
As a support, any color material layer coating solution is applied to one side of a black plastic film (Lumirror X30 <thickness 50 μm>: Toray Industries, Inc.) with an optical density of 1.0 or more according to JIS K7605: 1976 by the bar coating method. And dried to form a color material layer having a thickness of 10 μm. Next, an adhesive layer coating solution having the following formulation was applied to the other surface of the black film by a bar coating method and dried to form an adhesive layer having a thickness of 25 μm. A separator (Diafoil MRF <thickness 25 μm>: Mitsubishi Chemical) Polyester Film Co., Ltd.) and left at room temperature (about 25 ° C.) for 7 days to produce a coating repair adhesive sheet of Example 1.

<Prescription of coating liquid for adhesive layer of Example 1>
・ Acrylic adhesive (solid content 25%) 40.0 parts (SK Dyne 2094: Soken Chemical)
・ Epoxy-based crosslinking agent (solid content 5%) 0.1 part (E-AX: Soken Chemical Co., Ltd.)
・ Ethyl acetate 40.0 parts

[Example 2]
1. Preparation of concealable pigment dispersion for use in coating solution for concealing layer After mixing concealable pigment dispersion of the following composition, it was dispersed using a sand mill disperser (Nanomill: Asada Tekko), and concealed pigment dispersion a did.

<Concealing pigment dispersion a>
・ Concealment pigment (titanium oxide) 19.0 parts (R-FK-3: Carmaggie Chemical)
・ Acrylic resin (solid content 50%) 12.5 parts (Acridic A807: Dainippon Ink & Chemicals, Inc.)
・ Cyclohexanone 18.5 parts

2. Production of pressure-sensitive adhesive sheet for coating repair On one side of a plastic film (T600E <thickness 25 μm>: Mitsubishi Chemical Polyester Film Co., Ltd.) whose both surfaces are easily adhered, a coating solution for a concealing layer having the following formulation is applied by a bar coating method. After drying, a masking layer having a thickness of 10 μm and an optical density of 1.0 or more in JIS K7605: 1976 was formed, and a color material layer was further formed on the masking layer in the same manner as in Example 1.

  Next, the same adhesive layer coating solution as in Example 1 was applied to the same separator as in Example 1 by the bar coating method and dried to form an adhesive layer having a thickness of 25 μm. The laminated sheets were left to stand at room temperature (about 25 ° C.) for 7 days to produce a coating repair adhesive sheet of Example 2.

<Coating liquid for concealment layer>
-Concealing pigment dispersion a 50.0 parts-Concealing pigment dispersion (carbon black) 1.3 parts (pigment content 15%)
(Multi-rack A-9011: Toyo Ink Manufacturer)
Acrylic resin (solid content: 10.5%) 32.5 parts (M1002B: Soken Chemical Co., Ltd.)
・ Isocyanate-based crosslinking agent (solid content 60%) 19.0 parts (Takenate D110N: Mitsui Takeda Chemical Company)
・ Butyl acetate 52.5 parts

[Example 3]
A concealing layer was formed on one surface of the same plastic film as in Example 2 in the same manner as in Example 2. Next, instead of the adhesive layer coating solution of Example 2, an adhesive layer was formed on the separator in the same manner as in Example 2 using the adhesive layer coating solution of the following formulation, and the surface having the plastic film concealing layer: The laminated sheet was left to stand at room temperature (about 25 ° C.) for 7 days to produce a coating repair adhesive sheet of Example 3. The pressure-sensitive adhesive layer of the coating repair pressure-sensitive adhesive sheet of Example 3 had removability.

<Prescription of coating liquid for adhesive layer of Example 3>
・ Acrylic adhesive (solid content 40%) 25.0 parts (BPS5330: Toyo Ink Manufacturing Co., Ltd.)
・ Imine-based crosslinking agent (solid content 5%) 1.5 parts (BXX5134: Toyo Ink Manufacturing Co., Ltd.)
・ Ethyl acetate 12.5 parts ・ Toluene 12.5 parts

  Using these coating repair adhesive sheets of Examples 1 to 3, the body of an automobile was repaired by scratching it with a width of 5 mm and a length of 10 mm. About the adhesive sheet for coating repair of Example 3, the surface which does not have the adhesive layer of a plastic film was sprayed and dried in advance with a commercially available repair coating. For repairing the scratched part, the scratched part was polished with sandpaper, the residue was wiped off, and the adhesive repair sheet of Examples 1 to 3 cut into a size of 10 mm × 15 mm was peeled off and the separator was peeled off and adhered to the damaged part. To complete.

  Since the coating repair adhesive sheets of Examples 1 to 3 had a uniform color without thickness unevenness, the finish could be made beautiful. In addition, unlike conventional spray-type repair methods, there is no need for complicated work for masking unnecessary parts around the scratched part, and there is no problem that repair paint adheres to other parts that do not require application. Could be repaired easily.

  In particular, those using the coating repair adhesive sheets of Examples 1 and 2 were provided with a color material layer having the same color as that of the automobile in advance, so that the repair work was extremely easy.

  On the other hand, since the coating material repair adhesive sheet of Example 3 can be provided with a color material layer later, the user can freely select the desired color of the repair paint. Further, the pressure-sensitive adhesive sheet for paint repair of Example 3 has re-peelability, so that it can be easily peeled after repair, and is suitable for a case where temporary repair is desired. Moreover, although the coating repair adhesive sheet of Example 3 has a configuration in which the concealing layer and the adhesive layer are in contact with each other, since different types of cross-linking agents are used for each layer, the adhesive layer affects the cross-linking agent of the concealing layer. Thus, the adhesive force could be kept constant regardless of the crosslinking of the binder component of the hiding layer.

[Example 4]
Example 4 was carried out in the same manner as in Example 3 except that 0.5 part of a vaporizable rust inhibitor (solid content: 100%, dicyclohexylammonium caprylate: Kirest Co., Ltd.) was added to the coating solution for the adhesive layer of Example 3. An adhesive sheet for painting repair was prepared.

  The anticorrosive effect was evaluated for the adhesive sheets for coating repair of Examples 3 and 4. A car body test piece was scratched in the same manner as in the above test, and repair was performed using the paint repair adhesive sheet of Examples 3 and 4. Further, the coating repair adhesive sheet was scratched with a cutter and left in an environment of 60 ° C. and 95% RH for 1000 hours, and then the coating repair adhesive sheet was peeled off from the test piece and the scratched part was observed.

  As a result, generation of rust was confirmed for Example 3, but generation of rust was not confirmed for Example 4.

Sectional drawing which shows one Embodiment of the adhesive sheet for coating repair of this invention. Sectional drawing which shows other embodiment of the adhesive sheet for coating repair of this invention. Sectional drawing which shows other embodiment of the adhesive sheet for coating repair of this invention. Sectional drawing which shows other embodiment of the adhesive sheet for coating repair of this invention. Sectional drawing which shows other embodiment of the adhesive sheet for coating repair of this invention. Sectional drawing which shows other embodiment of the adhesive sheet for coating repair of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ...... Support body 11 ... Plastic film 12 ... Concealment layer 13 ... Easy adhesion treatment 2 ... Adhesion layer 3 ... Color material layer 4 ... Adhesion for painting repair Sheet

Claims (7)

  A pressure-sensitive adhesive sheet for coating repair, comprising an adhesive layer on one surface of a support.   The pressure-sensitive adhesive sheet for paint repair according to claim 1, wherein the support has concealability.   The pressure-sensitive adhesive sheet for coating repair according to claim 2, wherein the support has a concealing layer comprising a binder component and a concealing pigment on at least one surface of the plastic film.   The pressure-sensitive adhesive sheet for coating repair according to any one of claims 1 to 3, wherein the pressure-sensitive adhesive layer has removability.   The pressure-sensitive adhesive sheet for coating repair according to any one of claims 1 to 4, wherein the surface of the support that does not have the pressure-sensitive adhesive layer is subjected to an easy adhesion treatment.   The pressure-sensitive adhesive sheet for paint repair according to any one of claims 1 to 5, further comprising a color material layer on the surface of the support that does not have the pressure-sensitive adhesive layer.   The pressure-sensitive adhesive sheet for paint repair according to any one of claims 1 to 6, wherein the pressure-sensitive adhesive layer contains a vaporizable rust inhibitor.

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