JP6829169B2 - Repair method of sticking sheet for repair and surface to be repaired - Google Patents

Description

The present invention relates to a sticking sheet for repair and a method for repairing a surface to be repaired.

The coating applied to the exterior of an automobile or the like is composed of a plurality of layers, and on the surface layer side thereof, for example, a color layer painted with a coloring paint and this color layer are protected or glossed. A clear layer laminated on the above color layer is provided for this purpose. Therefore, the outermost layer (painted surface) of the coating applied to the exterior of the automobile or the like is composed of, for example, a clear layer.
The clear layer is designed to be scratch-resistant in order to achieve the above object.
However, it has been extremely difficult to completely avoid fine scratches on the painted surface. For example, scratches caused by contact of keys, key chains, nails, etc. with the painted surface when getting on and off, and scratches caused by contact with brushes during car washing could not be substantially avoided.
On the other hand, these scratches were fine (shallow depth) scratches that occurred only in the clear layer.

As a method for repairing such scratches on the clear layer, for example, a method has been proposed in which the surface layer portion of the clear layer is once peeled off, and then the peeled portion is repainted with the paint for the clear layer (Patent Document 1). reference).

Japanese Unexamined Patent Publication No. 2005-000872

However, the method described in Patent Document 1 requires a dedicated tool and a skilled technique, and is not a method that an individual user can easily perform with DIY.
Therefore, there has been a demand for a simple method that can make small scratches on the painted surface of the vehicle body inconspicuous.

In view of such circumstances, the present invention can be constructed by a simple method of simply pasting, and the appearance of the surface to be repaired can be made inconspicuous by making small scratches on the surface to be repaired such as the painted surface of an automobile inconspicuous. It is an object of the present invention to provide a repair sticking sheet capable of recovering and maintaining the recovered aesthetics for a long period of time.

Hereinafter, the configuration and operation of the present invention when the surface to be repaired is the “painted surface of the vehicle body” and the pasted sheet for repair is the “pasted sheet for the vehicle body” will be described.
That is, the vehicle body sticking sheet of the present invention is a car body sticking sheet that does not have a color material layer of the same color as the car body painted surface and is left as it is after being stuck on the car body painted surface, and is a resin base material. A solvent-containing solvent-containing layer formed on one surface of the base material layer, a pressure-sensitive adhesive layer laminated on the other surface of the base material layer, and the base material of the solvent-containing layer. It has an overcoat layer laminated on the opposite side of the layer,
When attached to the vehicle body painted surface, the solvent passes through the base material layer and the pressure-sensitive adhesive layer and migrates to the vehicle body painted surface.

According to such a vehicle body sticking sheet, a solvent-containing layer containing a solvent is formed on one surface of the base material layer, and when the car body sticking sheet is attached to the car body sticking sheet, the solvent-containing layer is formed. Since the solvent passes through the base material layer and the pressure-sensitive adhesive layer and migrates to the car body painted surface, scratches generated on the car body painted surface can be made inconspicuous.
This is because when the solvent contained in the solvent-containing layer is transferred to the painted surface of the car body by sticking the sticking sheet for the car body to the painted surface of the car body, the solvent causes fine scratches on the painted surface of the car body ( It is thought that this is because it gets into the recess), and as a result, small scratches on the painted surface of the car body become inconspicuous.

Further, in the vehicle body attachment sheet, an overcoat layer is laminated on the outside of the solvent-containing layer (the side opposite to the vehicle body coating surface when attached to the vehicle body coating surface).
Therefore, the solvent contained in the vehicle body sticking sheet (solvent-containing layer) is difficult to diffuse to the outside of the car body sticking sheet, and the vehicle body sticking sheet may continue to contain the solvent for a long period of time. it can. Therefore, the state of the painted surface of the car body recovered by sticking the sticking sheet for the car body can be maintained for a long period of time.

In the vehicle body sticking sheet, it is preferable that the vehicle body painted surface is provided with a clear layer on the outermost layer.
The fine scratches generated on the clear layer are suitable as scratches that become inconspicuous by sticking the vehicle body sticking sheet.

When the clear layer is provided on the outermost layer of the painted surface of the vehicle body, the solvent contained in the solvent-containing layer is preferably a solvent that dissolves the surface of the clear layer.
In this case, when the solvent contained in the solvent-containing layer is transferred to the painted surface of the car body by sticking the sticking sheet for the car body to the painted surface of the car body, the solvent causes fine scratches on the clear layer (the clear layer). It enters the recess) and dissolves the surface of the clear layer. As a result, the fine scratches on the painted surface of the vehicle body can be made less noticeable.
This is because the surface of the clear layer is melted and the surface of the clear layer (painted surface of the vehicle body) is attached with the vehicle body adhesive sheet, so that the unevenness of the clear layer is alleviated and the unevenness of the clear layer is alleviated. It is considered that the flexible adhesive layer follows the surface shape of the painted surface of the vehicle body where the unevenness is relaxed.

In the vehicle body sticking sheet, the solvent contained in the solvent-containing layer is preferably isophorone.
Since isophorone has a high boiling point, it does not easily diffuse from the vehicle body sticking sheet, and the effect of the present invention can be maintained for a long period of time. It is also suitable as a solvent capable of dissolving the surface of the clear layer.

In the vehicle body sticking sheet, the base material layer is preferably made of a vinyl chloride resin composition.
This is because the film (sheet) made of the vinyl chloride resin composition has excellent transparency and flexibility, and also has good weather resistance.

The first method for repairing a car body painted surface according to the present invention is characterized in that the car body sticking sheet of the present invention is attached to the car body painted surface.
According to the first method of repairing the painted surface of the vehicle body, it is possible to restore the aesthetic appearance by making fine scratches on the painted surface of the vehicle body to which the above-mentioned sticking sheet for the vehicle body is attached inconspicuous. In addition, the state in which the aesthetics are restored can be maintained for a long period of time.
Further, since the vehicle body sticking sheet may be stuck at a predetermined position, the construction is easy.

Repair method of the second vehicle body paintwork of the present invention, the vehicle body sticking sheet made of a laminate comprising a substrate layer and an adhesive layer not including the vehicle body paintwork of the same color as the color material layer, the body paintwork It is a method of repairing a vehicle body painted surface that is left as it is after being attached to the vehicle body, and at least one of the base material layer and the adhesive layer is used when the vehicle body coating sheet is attached to the vehicle body painted surface. It is characterized by containing a solvent that migrates to the painted surface of the vehicle body.
In the second method of repairing the painted surface of the vehicle body, the solvent contained in the solvent-containing layer is transferred to the painted surface of the vehicle body by attaching the sticking sheet for the vehicle body to the painted surface of the vehicle body, and the solvent is transferred to the painted surface of the vehicle body. It penetrates into the fine scratches (recesses) generated on the painted surface, and as a result, the fine scratches on the portion of the painted car body to which the above-mentioned sticking sheet for the car body is attached can be made inconspicuous, and the aesthetic appearance can be restored. In addition, the state in which the aesthetics are restored can be maintained for a long period of time.
Further, since the vehicle body sticking sheet may be stuck at a predetermined position, the construction is easy.

In the present invention, the "repair target surface" is not only the painted surface of the vehicle body, but also the unpainted surface of the vehicle body (for example, the surface of a resin part) or the surface of the terminal device (the surface of the display and the housing). It may be any surface.).
That is, the above-mentioned configuration and operation also apply when the surface to be repaired is a vehicle body unpainted surface and a surface of a terminal device.

According to the present invention, it is possible to restore the aesthetic appearance of the painted surface of the vehicle body by making small scratches such as nails and car wash scratches generated on the painted surface of the vehicle body inconspicuous, and to maintain the state for a long period of time. can do.

It is a perspective view which shows an example of the sticking sheet for a vehicle body of this invention schematically. (A) to (c) are cross-sectional views for explaining an example of the manufacturing method of the sticking sheet for a vehicle body of this invention. (A) to (c) are perspective views for explaining a part of the manufacturing process shown in FIG. It is a schematic diagram for demonstrating the sticking position of the sticking sheet for a vehicle body in each evaluation of an Example. (A) is a photograph before pasting the vehicle body sticking sheet in the evaluation (1) according to the embodiment, and (b) is a photograph after pasting the car body sticking sheet in the same evaluation (1). It is a photograph. (A) is a photograph before pasting the vehicle body sticking sheet in the evaluation (2) according to the embodiment, and (b) is a photograph after pasting the car body sticking sheet in the same evaluation (2). It is a photograph. (A) is a photograph before pasting the vehicle body sticking sheet in the evaluation (3) according to the embodiment, and (b) is a photograph after pasting the car body sticking sheet in the same evaluation (3). It is a photograph. (A) is a photograph before pasting the vehicle body sticking sheet in the evaluation (4) according to the embodiment, and (b) is a photograph after pasting the car body sticking sheet in the same evaluation (4). It is a photograph.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view schematically showing an example of a vehicle body sticking sheet of the present invention.
As shown in FIG. 1, the vehicle body sticking sheet 10 includes a resin base material layer 11, a solvent-containing layer 12 formed on one surface (upper surface in the drawing) of the base material layer 11, and a base material layer. Adhesive layer 13 laminated on the other surface (lower surface in the figure) of 11 and overcoat layer 14 laminated on the opposite side (upper side in the figure) of the solvent-containing layer 12 to the base material layer 11. A release paper 15 laminated on the opposite side (lower side in the figure) of the base material layer 11 of the agent layer 13 is provided.
Further, the overcoat layer 14 is composed of a second base material layer 14a and a second pressure-sensitive adhesive layer 14b.

The base material layer 11 is a resin film, and the material thereof is not particularly limited as long as it is transparent.
Examples of the material of the base material layer 11 include a vinyl chloride resin composition, a polyester resin composition containing PET and the like, an acrylic resin composition, a urethane resin composition and the like.
Among these, a vinyl chloride resin composition is preferable. The reason is as described above.

Examples of the vinyl chloride-based resin composition include a resin composition containing a vinyl chloride-based resin and a plasticizer. The vinyl chloride-based resin composition is further based on various additives generally blended in the vinyl chloride-based resin composition such as an ultraviolet absorber, a stabilizer, a lubricant, a modifier, and a filler, if necessary. It may be contained within a range that does not impair the transparency of the material layer 11.
Examples of the vinyl chloride resin include a homopolymer of vinyl chloride, a copolymer of vinyl chloride and another monomer copolymerizable therewith, and the like.
As the plasticizer, a plasticizer generally blended in a vinyl chloride resin composition can be used.

The pressure-sensitive adhesive layer 13 is not particularly limited as long as it has transparency and the base material layer 11 can be attached to the painted surface of the vehicle body, and a conventionally known pressure-sensitive adhesive can be used. .. Specific examples of the pressure-sensitive adhesive layer 13 include those made of a rubber-based pressure-sensitive adhesive, an acrylic-based pressure-sensitive adhesive, and the like.

In the present invention, as the base material layer 11 in which the pressure-sensitive adhesive layer 13 is laminated on one side, a commercially available product of a laminated body of a transparent resin film and a pressure-sensitive adhesive layer can also be used.
Specific examples of the above-mentioned commercial products include, for example, the product name "Lumiguard" manufactured by IKS Co., Ltd., the product name "LAG Protect" manufactured by Lintec Corporation, and the like. Among these, Lumiguard L-250 (manufactured by Icase) and LAG Protect G-011PV50E (manufactured by Lintec) are suitable.
In addition, for example, a product used as an overlaminate film for an inkjet media can also be used.

The solvent-containing layer 12 can be formed, for example, by using an ink composition containing a solvent.
Examples of the ink composition include those containing a main agent and a solvent, and further containing various additions such as a softener, an ultraviolet absorber, a curing agent, and a whitening agent (bluing agent), if necessary. Be done.

Examples of the main agent include transparent solvent-based inks, and transparent solvent-based gloss inks for screen printing are particularly preferable. As such a solvent type ink, various commercially available products can be used.
Specific examples of the commercially available products include SH medium (manufactured by Jujo Chemical Co., Ltd., vinyl ink H-type halftone), SG700 medium (manufactured by Seiko Advance Co., Ltd.) and the like.

The solvent is not particularly limited as long as it passes through the base material layer and the adhesive layer and migrates to the car body painted surface when the vehicle body sticking sheet is attached to the car body painted surface, and the solvent is not particularly limited. It may be appropriately selected in consideration of the material of the adhesive layer, the material of the painted surface of the vehicle body, and the like.
As the solvent, a solvent having a high boiling point is preferable. This is because the solvent having a high boiling point does not easily diffuse to the outside of the seat, and the vehicle body sticking sheet can maintain its effect for a longer period of time.

Specific examples of the solvent include isophorone, methyl acetate, butyl acetate, toluene, acetone, xylene, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), cyclohexane, high boiling ester solvent and the like. These may be used alone or in combination of two or more.
Of these, isophorone is preferred. This is because isophorone is a solvent that is also used as a retarder in solvent-based inks, has a high boiling point, and can ensure the effects of the present invention over a long period of time.

In the present invention, when a clear layer is provided on the painted surface of the vehicle body, the clear layer contains, for example, an acrylic resin, polyester, epoxy resin, urethane resin or the like as a main component, and is a melamine-based or isociane-based crosslink. Examples thereof include conventionally known clear layers such as a clear layer formed by using the components.
The vehicle body painted surface provided with these clear layers is suitable for use in combination with the vehicle body sticking sheet containing isophorone as a solvent.
The clear layer that is particularly suitable in combination with the vehicle body sticking sheet containing isophorone as a solvent is an acrylic resin-based clear layer.

In the ink composition, the blending amount of the solvent is preferably 10 to 50 parts by weight, more preferably 20 to 40 parts by weight, based on 100 parts by weight of the main agent.
This is because, within this range, the solvent-containing layer is easily formed, and the vehicle body sticking sheet is suitable for containing the solvent for a long period of time.

As the softener and the ultraviolet absorber, conventionally known ones can be used, and for example, the softener and the ultraviolet absorber used in solvent-based inks for screen printing can be preferably used.
As the curing agent, conventionally known curing agents can be used. For example, the curing agent used in the solvent-based ink for screen printing may be appropriately selected and used according to the type of the main agent.
As the whitening agent, for example, a conventionally known whitening agent such as an optical whitening agent using a blue pigment or a fluorescent whitening agent can be used.

The solvent-containing layer 12 can be formed, for example, by printing the ink composition on one side of the base material layer 11.
Here, the method for printing the ink composition is not particularly limited, and for example, known printing methods such as gravure printing, offset printing, screen printing, transfer printing from a transfer sheet, and inkjet printing can be adopted.
Of these, screen printing is preferred. This is because it is a printing method suitable for printing so that a part or all of the solvent-containing layer 12 is impregnated in the base material layer 11, and it is also easy to print the solvent-type ink repeatedly.
In FIG. 1, the solvent-containing layer 12 is drawn as if it is laminated on the base material layer 11, but in the vehicle body sticking sheet 10 of the present invention, at least a part of the solvent-containing layer 12 is usually formed. It is formed in a state of being impregnated (absorbed) in the base material layer 11.

The overcoat layer 14 is composed of a second base material layer 14a and a second pressure-sensitive adhesive layer 14b.
As the second base material layer 14a, the same transparent resin film that can be used for the base material layer 11 can be used.
As the second pressure-sensitive adhesive layer 14b, the same one as the pressure-sensitive adhesive layer 13 can be used.
Therefore, as the overcoat layer 14, a commercially available product of a laminated body of a transparent resin film and an adhesive layer such as "Lumiguard" manufactured by IKS Co., Ltd., "LAG Protect" manufactured by Lintec Corporation can also be used.
In the vehicle body sticking sheet 10, the base material layer 11 and the second base material layer 14a may be made of the same material or may be made of different materials. Further, the pressure-sensitive adhesive layer 13 and the second pressure-sensitive adhesive layer 14b may be made of the same material or may be made of different materials.
Further, the overcoat layer does not necessarily have to include a second pressure-sensitive adhesive layer. For example, a thermosetting transparent resin film is thermocompression-bonded to the base material layer 11 on which the solvent-containing layer 12 is formed. It may be a layer or a layer formed by applying a curable resin composition and then curing the layer.

The vehicle body sticking sheet 10 having such a configuration is used by sticking the adhesive layer 13 side to the car body painted surface (not shown) after peeling off the release paper 15.
The thickness of the vehicle body sticking sheet 10 (thickness in the state where the release paper 15 is peeled off) is not particularly limited, but is preferably about 150 to 200 μm.

On the car body painted surface to which the car body pasting sheet is attached, the scratches on the car body painted surface become inconspicuous, and the state is maintained for a long period of time. Therefore, the appearance of the painted surface of the car body to which the sticking sheet for the car body is attached will be restored.
Further, a method of repairing a car body painted surface by sticking the above-mentioned car body pasting sheet to a car body painted surface is also one of the present inventions (first method of repairing a car body painted surface).

Next, a method of manufacturing the above-mentioned sticking sheet for a vehicle body will be described with reference to the drawings. Here, a case where the ink composition is printed by screen printing to form the solvent-containing layer will be described as an example.
2 (a) to 2 (c) are cross-sectional views for explaining an example of the manufacturing process of the sticking sheet for a vehicle body of the present invention.
3A to 3C are perspective views for explaining a part of the manufacturing process shown in FIG. 2.

(1) First, as shown in FIG. 2A, a laminated body 21 in which the pressure-sensitive adhesive layer 13 and the release paper 15 are laminated on one side of the base material layer 11 is produced.
Specifically, for example, a resin film (base material layer 11) is produced by a known method such as calender molding or extrusion molding, and a pressure-sensitive adhesive layer 13 is separately formed on the release paper 15. It can be produced by sticking the pressure-sensitive adhesive layer 13 together with the release paper 15 on a resin film (base material layer 11).
Further, as the laminated body 21, a commercially available product can also be used as described above.

(2) Next, as shown in FIG. 2B, the solvent-containing layer 12 is formed on the surface opposite to the side on which the pressure-sensitive adhesive layer 13 of the base material layer 11 constituting the laminated body 21 is laminated.
To form the solvent-containing layer 12, first, as shown in FIG. 3A, a printing plate 29 having a screen 28 on the upper surface of the laminate 21 (base material layer 11, adhesive layer 13, release paper 15) is set. Then, as shown in FIG. 3B, the ink composition 30 is printed on the base material layer 11 by supplying the ink composition 30 onto the screen 28 and performing screen printing.
At this time, it is preferable that the printing plate 29 used for screen printing includes a screen 28 having a mesh coarser than the standard usage standard of the ink composition 30. As a result, a considerably large amount of the ink composition 30 is supplied onto the base material layer 11, and as a result, the ink composition is easily impregnated into the base material layer. Then, the base material layer impregnated with the ink composition (solvent) becomes highly flexible.
The standard used standard refers to the mesh size recommended by the sales company according to the solvent type ink and the like.

For example, when an ink composition containing SH mesh (manufactured by Jujo Chemical Co., Ltd., vinyl ink H-type halftone) and vinyl retarder (manufactured by Jujo Chemical Co., Ltd., a slow-drying agent containing isophorone) is used as the ink composition. The screen printing may be performed using a printing plate having a screen having an opening of 80 to 120 mesh.
The standard usage standard for SH medium is about 200 to 300 mesh.

When the ink composition 30 is printed on the base material layer 11 by screen printing, the ink composition 30 may be printed only once, or may be continuously printed a plurality of times (for example, twice). Is also good.
By printing a plurality of times in succession, more ink composition 30 can be supplied on the base material layer 11. However, it is not always good to repeat the printing of the ink composition 30 as many times as possible, and if the number of repetitions increases, there is a possibility that the formed solvent-containing layer 12 may have inconveniences such as cracks.
For this reason, when the solvent-containing layer 12 is formed by printing the ink composition 30 by screen printing, the number of continuous coatings of the ink composition 30 is preferably about two times.

Further, after the ink composition 30 is applied, the ink composition 30 is cured for a predetermined time and waits for the ink composition 30 to dry. This drying may be natural drying, but as shown in FIG. 3C, heating may be performed using the heating device 26. In this case, the heating temperature may be appropriately set according to the composition of the base material layer, the ink composition, and the like, and can be, for example, about 30 to 100 ° C. The preferred lower limit of the heating temperature is 60 ° C, and the preferred upper limit is 80 ° C.
In addition, the heating time may be appropriately selected, for example, about 15 to 60 minutes.

In this step, the process of printing and drying the ink composition 30 may be performed only once, or the printing / drying process may be set as one cycle, and this cycle may be repeated a plurality of times.
By repeating the application and drying cycle of the ink composition 30 a plurality of times in this way, a sufficient amount of the ink composition applied to the base material layer 11 can be secured.

In this step, by forming the solvent-containing layer 12 on one side of the base material layer 11 by using such a method, a part or all of the solvent-containing layer is formed in a state of being impregnated in the base material layer 11. Solvent. Therefore, the vehicle body sticking sheet of the present invention contains the above-mentioned solvent in the base material layer.

(3) Next, as shown in FIG. 2C, the overcoat layer 14 is further laminated on the base material layer 11 on which the solvent-containing layer 12 is formed.
The overcoat layer 14 may be formed by attaching a resin film via the pressure-sensitive adhesive layer 14b. For example, a laminate similar to the laminate 21 used in the step (1) above may be formed with a release paper. After removing it, it may be attached on the base material layer 11 on which the solvent-containing layer 12 is formed.
Of course, the overcoat layer may be laminated by another method. For example, the adhesive may be applied by a known coating method such as coating with a bar coater, and then a resin film may be attached and laminated. ..
By going through the steps (1) to (3), the vehicle body sticking sheet of the present invention can be manufactured.

Next, a second method of repairing the painted surface of the vehicle body according to the present invention will be described.
As described above, the second method of repairing the painted surface of the vehicle body is a repair method of attaching a vehicle body sticking sheet made of a laminate including a base material layer and an adhesive layer to the painted surface of the car body. Here, the vehicle body sticking sheet (hereinafter, also referred to as a second car body sticking sheet) is the vehicle body when at least one of the base material layer and the adhesive layer is attached to the vehicle body painted surface. Contains a solvent that migrates to the painted surface. Therefore, as described above, fine scratches on the painted surface of the vehicle body can be made inconspicuous, and the state can be maintained.

In the second sticking sheet for a vehicle body, when the base material layer contains a solvent, the base material layer containing the solvent is, for example, a printing method such as screen printing on the base material layer 11 as described above. Examples thereof include those similar to the base material layer 11 on which the solvent-containing layer 12 is formed.
When the pressure-sensitive adhesive layer contains a solvent in the second sticking sheet for a vehicle body, the pressure-sensitive adhesive layer containing the solvent includes, for example, a pressure-sensitive adhesive composition containing a polymer component and a solvent on a release paper or the like. When the pressure-sensitive adhesive layer is formed by coating and drying, a pressure-sensitive adhesive layer formed by drying the pressure-sensitive adhesive composition under drying conditions such that this solvent remains in the pressure-sensitive adhesive layer can be used. ..

In the second vehicle body sticking sheet, the solvent may be formed on only one of the base material layer and the pressure-sensitive adhesive layer, or may be formed on both of them.
In addition, the second vehicle body sticking sheet may have an overcoat layer laminated on the opposite side of the base material layer to the adhesive layer, as in the vehicle body sticking sheet 10 shown in FIG. In this case, the solvent contained in the second vehicle body sticking sheet is less likely to diffuse on the outside (the side opposite to the vehicle body painted surface).

As the solvent contained in the second vehicle body attachment sheet, the same solvent as that of the vehicle body attachment sheet of the present invention can be used.
Further, as the material of the base material layer, the adhesive layer, and the overcoat layer constituting the second vehicle body attachment sheet, the vehicle body attachment sheet of the present invention is provided, except that it contains a solvent, if necessary. The same as the above can be used.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.
Here, the vehicle body sticking sheet of the present invention was produced, and the car body sticking sheet was attached to the body painted surface of a plurality of types of automobiles, and the repair performance at that time was evaluated.

(Example 1)
(1) Preparation of ink composition A solvent containing a curing agent (Jujo Chemical Co., Ltd., JA-940) and isophorone (Jujo Chemical Co., Ltd., JA-940) with respect to 100 parts by weight of SH medium (Jujo Chemical Co., Ltd., vinyl ink H-type halftone). 30 parts by weight of a vinyl retarder manufactured by Chemical Co., Ltd. was added and mixed uniformly to prepare an ink composition.

(2) Preparation of a sticking sheet for a vehicle body First, Lumiguard L-250 (manufactured by ICC), which is a laminate 21 of a base material layer 11, an adhesive layer 13, and a release paper 15, is prepared, and the above base material layer is prepared. The ink composition was printed by screen printing on the surface opposite to the side on which the pressure-sensitive adhesive layer 13 of 11 was laminated.
Here, screen printing was performed using a screen 28 having a mesh opening of 100 mesh as the screen 28 of the printing plate 29 and using the power squeegee G as the squeegee 24.
In addition, screen printing was performed by printing twice in succession.
Then, the heating / drying treatment was performed at 80 ° C. for 30 minutes using the heating device 26.
The solvent-containing layer 12 was formed (see FIGS. 2 (b) and 3 (a) to (c)).

Next, the overcoat layer 14 was formed on the solvent-containing layer 12 formed in the above step.
Here, Lumiguard L-250 (manufactured by ICC) from which the release paper has been peeled off is attached to the base material layer 11 on which the solvent-containing layer 12 is formed, and then heated at 60 ° C. for 30 minutes. , Lumiguard L-250 was blended to form an overcoat layer 14 (see FIG. 2C).
Through such a process, the vehicle body sticking sheet A was completed.

(Evaluation)
It was evaluated whether or not the car body sticking sheet A produced in Example 1 could be stuck to the door handle of an automobile and its peripheral portion to make fine scratches on the car body painted surface inconspicuous.
This part is a part that is easily scratched by contact with keys, key chains, nails, etc. when getting on and off a car.
The attachment position of the attachment sheet for the vehicle body in each evaluation is shown in FIG.
FIG. 4 is a schematic view for explaining the sticking position of the car body sticking sheet in each evaluation of the embodiment. FIG. 4 shows a part of the door 40 provided with the door handle 41.

(Evaluation (1))
Attach the car body sticking sheet A to about half the area (see 101 in Fig. 4) of the handle part of the door handle 41 of the automobile (Suzuki, Wagon R 2001 model), and stick the car body painted surface before and after sticking. It was visually observed.
Here, the vehicle body sticking sheet A was cut to an appropriate size, the release paper was peeled off, and the sticking sheet A was stuck at the above-mentioned position.
As a result, as shown in FIG. 5, it was confirmed that by attaching the vehicle body sticking sheet A, fine scratches on the car body painted surface became inconspicuous and the aesthetic appearance was restored.
FIG. 5A is a photograph before the vehicle body attachment sheet is attached in the above evaluation (1), and FIG. 5B is a photograph after the vehicle body attachment sheet is attached in the evaluation (1). Is.

(Evaluation (2))
Attach and paste the car body sticking sheet A to a part of the painted surface (see 102 in FIG. 4) below the door handle 41 of the automobile (Mitsubishi Motors, i (eye), 2006 model). The painted surface before and after application was visually observed.
Here, the vehicle body sticking sheet A was cut to an appropriate size, the release paper was peeled off, and the sticking sheet A was stuck at the above-mentioned position.
As a result, as shown in FIG. 6, it was confirmed that by attaching the vehicle body attachment sheet A, fine scratches on the painted surface became inconspicuous and the aesthetic appearance was restored.
FIG. 6A is a photograph before the vehicle body attachment sheet is attached in the main evaluation (2), and FIG. 6B is a photograph after the vehicle body attachment sheet is attached in the same evaluation (2). Is.

(Evaluation (3))
The vehicle body attachment sheet A was attached to the recessed portion (see 103 in FIG. 4) of the door handle 41 of an automobile (Mazda, Premacy, 2002 model), and the painted surface before and after the attachment was visually observed.
Here, the vehicle body sticking sheet A was cut to an appropriate size, the release paper was peeled off, and the sticking sheet A was stuck at the above-mentioned position.
As a result, as shown in FIG. 7, it was confirmed that by attaching the vehicle body attachment sheet A, fine scratches on the painted surface became inconspicuous and the aesthetic appearance was restored.
FIG. 7A is a photograph before the vehicle body attachment sheet is attached in the main evaluation (3), and FIG. 7B is a photograph after the vehicle body attachment sheet is attached in the evaluation (3). Is.

(Evaluation (4))
The car body sticking sheet A was stuck to the recessed part (see 103 in FIG. 4) of the door handle of an automobile (Mitsubishi Motors, Diamante, 1997 model), and the painted surface before and after the sticking was visually observed.
Here, the vehicle body sticking sheet A was cut to an appropriate size, the release paper was peeled off, and the sticking sheet A was stuck at the above-mentioned position.
As a result, as shown in FIG. 8, it was confirmed that by attaching the vehicle body attachment sheet A, fine scratches on the painted surface became inconspicuous and the aesthetic appearance was restored.
FIG. 8A is a photograph before the vehicle body attachment sheet is attached in the main evaluation (4), and FIG. 8B is a photograph after the vehicle body attachment sheet is attached in the same evaluation (4). Is.

(Modification example 1)
In the above-described embodiment, the case where the surface to be repaired is the painted surface of the vehicle body is exemplified, but the surface to be repaired is, for example, an opaque resin interior part (for example, a dash) constituting the vehicle body. It may be an unpainted vehicle body unpainted surface such as the surface of the board) and exterior parts (for example, bumper or rear wing).
That is, the above-mentioned contents of the present embodiment also apply to the case where the surface to be repaired is a vehicle body unpainted surface.

(Modification 2)
In the above-described embodiment, the case where the surface to be repaired is the painted surface of the vehicle body is illustrated, but the surface to be repaired is, for example, a smartphone, a mobile phone, a tablet computer device, a notebook computer device, or the like. It may be the surface of a terminal device such as a desktop computer device (either the surface of a display or the surface of a housing).
That is, the above-mentioned contents of the present embodiment also apply when the surface to be repaired is the surface of the terminal device.

10 Sticking sheet for car body 11 Base material layer 12 Solvent-containing layer 13 Adhesive layer 14 Overcoat layer 14a Second base material layer 14b Second adhesive layer 15 Release paper 21 Laminated body 24 Squeegee 26 Heating device 28 Screen 29 Printing plate 30 Ink composition 40 door 41 door handle

Claims (8)

A repair sticking sheet that does not have a color material layer of the same color as the repair target surface and is left as it is after being attached to the car body painted surface, the car body unpainted surface, or the surface of the terminal device to be repaired .
With a resin base layer
A solvent-containing solvent-containing layer formed on one surface of the base material layer and
An adhesive layer laminated on the other surface of the base material layer and
It has an overcoat layer laminated on the opposite side of the solvent-containing layer to the base material layer.
A sticking sheet for repair, wherein when the solvent is attached to the surface to be repaired, the solvent passes through the base material layer and the pressure-sensitive adhesive layer and migrates to the surface to be repaired. The repair sticking sheet according to claim 1, wherein the repair target surface is provided with a clear layer on the outermost layer. The repair sticking sheet according to claim 2, wherein the solvent contained in the solvent-containing layer is a solvent that dissolves the surface of the clear layer. The repair sticking sheet according to any one of claims 1 to 3, wherein the base material layer is made of a vinyl chloride resin composition. The solvent contained in the solvent-containing layer is methyl acetate, butyl acetate, toluene, acetone, xylene, methyl ethyl ketone, methyl isobutyl ketone, cyclohexane, or a high boiling ester solvent, or a mixture of two or more thereof. The repair sticking sheet according to any one of 4 to 4. A method for repairing a surface to be repaired, which comprises attaching the sticking sheet for repair according to any one of claims 1 to 5 to the surface to be repaired. The repair patch sheet made of a laminate comprising a substrate layer and an adhesive layer not including the repair target surface and the same color material layer, body painting surface, the repaired target surface is the surface of the vehicle body unpainted surface or the terminal device It is a repair method for the surface to be repaired, which is pasted on the surface and then left as it is.
At least one of the base material layer and the pressure-sensitive adhesive layer is characterized by containing a solvent that migrates to the surface to be repaired when the sticking sheet for repair is attached to the surface to be repaired. How to repair the surface to be repaired. The surface to be repaired according to claim 7, wherein the solvent is methyl acetate, butyl acetate, toluene, acetone, xylene, methyl ethyl ketone, methyl isobutyl ketone, cyclohexane, or a high boiling ester solvent, or a mixture of two or more thereof. Repair method.