JP3154547B2 - Masking material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a masking material used for protecting a predetermined position of a member at the time of coating so that the coating does not reach the predetermined position.

[0002]

2. Description of the Related Art A masking material is provided with a pressure-sensitive adhesive layer on a masking material if the portion to be protected is planar or a hole, and is attached to the portion or the hole via the pressure-sensitive adhesive layer. For example, the masking material is provided with an insertion portion and the insertion portion is inserted by inserting the insertion portion. If the masking material is plate-shaped, the masking material is provided with a fitting groove, and the masking material is mounted by fitting the fitting groove into the portion. If it is convex, a fitting portion is formed on the masking material, and the fitting is performed by fitting the portion to the fitting portion. Then, the masking material is removed from the portions after the surface treatment.

As described above, conventionally, as a masking material,
A material using a thermoplastic mixed with an inorganic filler as a material has been proposed (JP-A-2-126966).
issue). Among thermoplastic materials, polyolefins are particularly rich in solvent resistance, and the addition of an inorganic filler mechanically reinforces the polyolefin, further increasing the heat conductivity and improving the heat resistance. The masking material can be reused.

[0004]

However, in the above-mentioned conventional masking material, even if the inorganic filler is mixed with the thermoplastic, the heat resistance is at most about 150 ° C., and further heating is required. In the surface treatment step, there was a problem that the masking material was deformed.

[0005]

Means for Solving the Problems The present invention provides methylpentencopoly as a means for solving the above-mentioned conventional problems.
Polymer, polysulfone, polyethersulfone, polyfe
Nylene sulfide, polyphenylene oxide, polyamido
Doimide, polyetherimide, polyetherether
One or two or more of the engineering plastic selected from the group of ketone (hereinafter abbreviated as engineering plastics)
Poly with top and polyamide and / or polystyrene
It is intended to provide a masking material made of mar-alloy .

[0006] In the engineering plastics used in the present invention is main <br/> chill pentene copolymers (TPX), Po Risuruhon (P
SF), polyether sulfone (PES), polyphenylene sulfide (PPS), polyphenylene oxide (PPO), polyamide imide (PAI), polyether imide (PEI), polyether ether ketone (P
EEK) is selected. The above engineering plastics are mixed two or more kinds
It may be. Polyphenylene is the preferred engineering plastic
There are oxides. Polyamide and / or
Or, polystyrene is mixed into a polymer alloy
You. The polymer alloy may be a foam, or may be a mixture or a laminate of two or more.

The above engineering plastics include calcium carbonate, magnesium carbonate, barium sulfate, calcium sulfite, magnesium hydroxide, aluminum hydroxide, magnesium oxide, titanium oxide, iron oxide, zinc oxide, alumina, silica, diatomaceous earth, dolomite, Gypsum, talc, clay, asbestos, mica, calcium silicate, benite, white carbon, carbon black, iron powder, aluminum powder, stone powder, blast furnace slag, fly ash, synthetic fiber,
Fillers such as plant fibers, glass fibers, carbon fibers, ceramic fibers, whiskers and the like may be mixed. The filler is usually added in an amount of about 10 to 200% by weight based on the engineering plastic.

Further, the above engineering plastics include polyolefins such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, polyvinyl chloride, polystyrene, polymethacrylate, polyvinylidene chloride, styrene-butadiene copolymer, polyester, thermoplastic or foam of the thermoplastic plastic such as polyamide, one or two or more kinds thereof may be used in a product layer of polyurethane foam or the like. Desirable engineering plastics include polymer alloys of PPO with polyamide, polystyrene and the like.

The surface of the polymer alloy is subjected to, for example, a treatment such as corona discharge treatment or primer treatment to increase the affinity for the paint or the adhesive, or to the release treatment to decrease the affinity for the paint or the adhesive. Or you may. Chlorinated polypropylene, modified polyolefin such as ethylene-vinyl acetate copolymer or olefin copolymer, styrene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber, synthetic rubber such as polybutadiene as the primer used for the above-mentioned primer treatment Acrylic synthetic resin, vinyl synthetic resin, or synthetic rubber or synthetic resin primer such as acrylic synthetic resin containing amino group, amide group, etc., vinyl synthetic resin, amino synthetic resin or epoxy resin, or aluminum Isopropylate, aluminum alcoholate or aluminum chelate compound such as aluminum trisacetylacetonate, 2-ethylhexyl lead, alkyl metal such as hexadecyl lithium, dibutyltin diacetate, Organic tin compounds such as n-butyltin dioxide; silane compounds such as methylvinyldichlorosilane; metal complex salts of 1,3-dicarbonyl such as lithium acetylacetone and beryllium acetylacetone; organic titanium compounds such as tetrabutyltitanate; Boric acid compounds such as n-butyl and triphenyl borate; phosphates such as trioleyl phosphate and tridecyl phosphate; metal carboxylate such as magnesium stearate and cobalt naphthenate; potassium n-dodecyl mercapto; Metal thioalcolates, thiodicarboxylates such as zinc 2-ethylhexanedithioate, dithiocarbamic acid metal salts such as nickel dimethyldithiocarbamate and copper dimethyldithiocarbamate, sulfonic acid metal salts such as nickel benzenesulfonate, dibutyrate There are primers low molecular weight such as organic phosphoric acid metal salts such as vanadium phosphate, the primer is used as one or a mixture of two or more. As the primer, a synthetic resin or rubber having good adhesiveness to both the polymer alloy paint vehicle or a synthetic resin other than the polymer alloy generally used as an adhesive, or the above-mentioned various primers is used. Particularly preferable examples of the primer include acrylic synthetic resins and amino synthetic resins containing quaternary ammonium salts. In order to perform the primer treatment using one or a mixture of two or more of the above-mentioned various primers, a solution or an emulsion (latex) of one or two or more of the above-mentioned various primers is polymerized as a material of the above-mentioned masking material. Allo
B. Apply to the surface and dry. Prior to the primer treatment, the surface of the polymer alloy may be subjected to an affinity treatment. Examples of the affinity treatment applied to the surface of the polymer alloy include a flame treatment and a sulfuric acid treatment for slightly carbonizing the surface to give an affinity, and a corona discharge treatment for roughening and slightly carbonizing the surface.

The release agent used for the surface treatment of the polymer alloy includes a silicone release agent, a fluorine release agent, a fatty acid salt release agent, a paraffin release agent, a wax release agent, and the like. There is. In order to perform a release treatment using one or a mixture of two or more of the above various release agents, a solution or an emulsion (latex) or a melt of a mixture of one or two or more of the above various primers is subjected to the above masking. The material is applied to the surface of the polymer alloy and dried.

The above-mentioned polymer alloy may be colored with a pigment or a dye to identify a masking site, and may be color-coded. Further, a flame retardant, a flame retardant, an insect repellent, a preservative, an antioxidant, and an ultraviolet absorber A third component such as a chemical foaming agent or a foaming agent such as a capsule-type foaming agent may be added. These third components may be added alone or in admixture of two or more.

In order to produce a masking material from the above-mentioned polymer alloy, a method of forming a film or a sheet into a predetermined shape by vacuum forming is usually the most suitable method for mass production. Blow molding, injection molding and the like may be applied. The polymer alloy film or sheet may be either a non-stretched type or a stretched type.

[0013]

[Action] polymer alloy of the present invention is only rich in heat resistance
Is easy to vacuum form and has an affinity for coating films.
However, the masking material made of this material has high mechanical strength and does not soften and deform even when a temperature of 150 ° C. or more is applied .

[0014]

Therefore, in the present invention, the masking material can be used repeatedly even in a surface treatment having a high-temperature heating step.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Masking Material A Masking material A is applied to a flat portion of a member which is not to be coated.

1 to 3 show a first embodiment of the present invention. In the figure, the masking material (31) is
1) consists of a A, body (31) adhesive layer formed on A lower surface and (31) B, poly Fe <br/> Nirensurufido were mixed 50% by weight of calcium carbonate - the polyamide polymer alloy as a material, vacuum It is manufactured by molding. The adhesive layer (31) B is covered with a release sheet (31) C such as a polyethylene film, a polypropylene film, or release paper. Thus, in the masking material (31), the adhesive layer (31) B is a release sheet.
(31) Stacked because it is protected by C, convenient for transportation and storage.

As shown in FIG. 2, the masking material (31) is adhered to the part (1) of the member (1) where a flat coating is not to be applied after the release sheet (31) C is peeled off. Protect. Then, a paint is sprayed on the surface of the member (1) by spraying. The portion (2) may be provided with a hole. In this case, the inside of the hole is also protected by the masking material (31). After forming the coating film (4) in this manner, the masking material (31) is peeled off by a worker's hand before or after the heat treatment, for example, as shown in FIG. The masking material (31) of the present embodiment is made of the sheet as described above, so that it can be easily vacuum formed and the masking material (31) can be reused without deformation even after the heat treatment.

FIG. 4 shows a second embodiment of the present invention. In the masking material (32) of the present embodiment, the main body (32) A
Is a cylindrical container, and is a polyetheretherketone- polystyrene polymer mixed with 40% by weight of calcium carbonate.
-Manufactured by injection molding using alloy as material. An adhesive layer (32) B is formed on the lower surface of the main body (32) A, and the adhesive layer
(32) B is covered with a release sheet (32) C.
The masking material (32) is used for protecting the flat portion of the member similarly to the masking material (31) of the first embodiment, and the portion may be provided with a hole. And, like the masking material of the first embodiment, vacuum forming is easy and reusable.

FIGS. 5 and 6 show a third embodiment of the present invention. In the figure, a masking material (33) comprises a square box-shaped main body (33) A, a flange (33) B provided around the upper edge of the main body (33) A, and an adhesive layer formed on the lower surface of the main body (33) A. (33) C
Polyphenylene oxide obtained by mixing talc 30 wt% -
Manufactured by vacuum molding using polyamide polymer alloy as the material. The adhesive layer (33) C is covered with a release sheet (33) D. The masking material (33) is also the same as the masking material (31) of the first embodiment, and the flat portion of the member (1) is used.
(2) is applied, but as shown in FIG.
Since the coating film (4) is cut by the flange portion (33) B of (33), the masking material (33) can be easily detached by an operator's hand without being hindered by the coating film (4). . And, like the masking material of the first embodiment, vacuum forming is easy and reusable. As for the masking material (33), as shown in FIG. 7, it is desirable that a plurality of masking materials (33) are arranged vertically and horizontally from the above-mentioned sheet and integrally vacuum-formed. In this case, one or both sides of the flange portion (33) B of the masking material (33) are prepared or provided with grooves (33) E so that the individual masking materials (33) can be easily torn off by hand. Notch or groove (33) E of the flange (33) B
May be formed integrally during vacuum forming of the masking material (33), or may be formed separately after vacuum forming.

FIG. 8 shows a fourth embodiment of the present invention, in which a masking material (34) of this embodiment has a square box-shaped main body (34) with a square box-shaped handle (34) D standing upright from the bottom. 34) A and the body
(34) A polyether sulfone comprising an adhesive layer (34) B formed on the lower surface and containing 40% by weight of calcium carbonate.
Manufactured by vacuum molding using polyamide polymer alloy as the material. The adhesive layer (34) B is covered with a release sheet (34) C. The masking material (34) is used in the same manner as in the first embodiment. However, since the masking material (34) has the handle (34) D, it is extremely easy to attach and detach it. And, like the masking material of the first embodiment, vacuum forming is easy and reusable.

Masking Material B The masking material B is applied to flat portions and convex portions where the member is not to be coated. The masking material B is a polyesterimide- poly mixed with 30% by weight of glass fiber.
Styrene polymer alloy and calcium carbonate 15% by weight
And a polypropylene sheet in which 5% by weight of styrene-butadiene elastomer is mixed with a polypropylene sheet.
Manufactured by vacuum forming.

FIGS. 9 and 10 show a fifth embodiment of the present invention. In the figure, a masking material (35) is formed on an upper surface of the main body (35) A, a flange (35) B formed on the outer periphery of an upper edge of the main body (35) A, and a flange (35) B. Adhesive layer (3
5) C, and the adhesive layer (35) C has a release sheet (35)
D is coated. As shown in FIG. 10, the masking material (35) peels off the release sheet (35) D and passes through the adhesive layer (35) C on the upper surface of the flange (35) B to form a flat plate-like member (1). Paste it on the part that should not be painted (2). And the paint film by painting
After forming (4), the masking material (3
5) is removed. The portion (2) may be provided with a hole. Further, as shown in FIG. 11, the masking material (35) of this embodiment may protect the convex portion (21) by being applied to the convex portion (21) on the surface of the member (1). The masking material (35) of this embodiment is easy to vacuum form, does not deform even by heat during surface treatment, and can be reused after removal.

In the manufacturing method of the masking material (35) according to the present embodiment, a plurality of masking materials (35) are arranged vertically and horizontally from the two-layer sheet as shown in FIG. It is desirable to perform vacuum forming. In this case, a cut (35) E is made in the release sheet (35) D, and a cut or groove (35) F is formed on one or both sides of the flange (35) B of the masking material (35). Provided to make it easier to tear off the individual masking material (35) by hand. The cuts or grooves (35) F of the flange portion (35) B may be formed integrally during vacuum forming of the masking material (35), or may be formed separately after vacuum forming.

FIGS. 13 and 14 show a sixth embodiment of the present invention. In the figure, the masking material (36) comprises a cylindrical container-shaped main body (36) A, a flange (36) B formed on the outer periphery of the upper edge of the main body (36) A, and furthermore, an outer periphery of the flange (36) B And an adhesive layer (36) C formed on the upper surface of the flange (36) B.The adhesive layer (36) C has a release sheet (3) on the adhesive layer (36) C.
6) D is coated. The masking material (36) is a release sheet.
(36) D is peeled off and adhered, for example, to the portion (2) having the hole (22) of the member (1) via the adhesive layer (36) C on the upper surface of the flange portion (36) B. A coating film (4) is formed by painting as shown in FIG. 3, and the coating film (4) is formed by a flange (3) of the masking material (36).
6) The masking material (36) can be easily detached by hand without being hindered by the coating film (4) because it is cut by the bent portion (36) E of B. And, like the masking material of the fifth embodiment, vacuum forming is easy and reusable. The hole (22) may not be present in the portion (2) of the member (1).

Masking Material C The masking material C is inserted into the hole of the member to protect the hole. The masking material C is made of a sheet of a methylpentene copolymer -polystyrene polymer alloy and is manufactured by vacuum forming.

FIGS. 15 and 16 show a seventh embodiment of the present invention. The masking material (37) of the present embodiment includes a container insertion portion (37) A and a flange portion (37) B formed on the outer periphery of the upper edge of the insertion portion (37) A. The masking material (37) is shown in FIG.
As shown in (1), the inside of the hole (22) is protected by inserting it into the hole (22) of the member (1) via the insertion portion (37) A, and furthermore, by the flange (37) B. Protect the area around the hole (22). After inserting the masking material (37) into the hole (22), a coating film (4) is formed as shown in FIG. 16 by coating, and the inside of the hole (22) and the periphery of the hole (22) are formed. Does not form the coating film (4). The masking material (37) is usually removed by an operator after the heat treatment of the coating film (4), but the masking material (37) is easy to vacuum form and does not deform even by the heat treatment, and is reused. Is possible. Further, the surface of the masking material (37) which has been subjected to a primer treatment using an acrylic synthetic resin containing a quaternary ammonium salt further has an affinity for the coating film.
The masking material surface even after heat treatment.
There is no peeling of the film , so that there is no contamination around the masking area due to small pieces of the coating film when reused, which is extremely convenient when the masking material is reused.

FIG. 17 shows an eighth embodiment of the present invention. The masking material (38) of the present embodiment has a handle portion (38) from the bottom.
C, the container-shaped insertion portion (38) A in which the standing portion is erected, and the insertion portion (38) A
And a flange portion (38) B formed on the outer periphery of the upper edge. The masking material (38) is used in the same manner as in the seventh embodiment. However, since the masking material (38) has the handle portion (38) C, attachment and detachment to and from the hole is extremely easy. And, like the masking material of the seventh embodiment, it is easy to vacuum form and can be reused.

FIGS. 18 and 19 show a ninth embodiment of the present invention. The masking material (39) of the present embodiment includes a cylindrical container-shaped insertion portion (39) A, a flange portion (39) B formed on the upper edge of the insertion portion (39) A, and a flange portion (39) B. And a rising portion (39) C standing upright from the outer periphery. The masking material (39) is inserted into the hole (22) of the member (1) through the insertion portion (39) A as in the seventh embodiment, but is erected from the outer periphery of the flange (39) B. Rising part
As shown in FIG. 19, the coating film (4) is cut by (39) C, and thus the masking material (39) is smoothly removed. And, like the masking material of the seventh embodiment, it is easy to vacuum form and can be reused.

FIG. 20 shows a tenth embodiment of the present invention. The masking material (310) of the present embodiment includes a cross-shaped container-shaped insertion portion (310) A and a flange formed on the upper edge of the insertion portion (310) A.
(310) B and a peripheral wall portion (31
0) C. The masking material (310) is used in the same manner as in the ninth embodiment. However, since the insertion portion (310) A has a cross shape, the outer periphery of the insertion portion (310) A only partially comes into contact with the inner wall of the hole. And the material is saved as compared with a cylindrical container. And, like the masking material of the seventh embodiment, it is easy to vacuum form and can be reused.

FIGS. 21 and 22 show an eleventh embodiment of the present invention.
An example is shown. The masking material (311) of the present embodiment includes a container-shaped insertion portion (311) A, an upper flange portion (311) B formed on the upper edge of the insertion portion (311) A, and the upper flange portion (311). A peripheral wall portion (311) C hanging from the peripheral edge of B, a lower flange portion (311) D protruded from the lower edge of the peripheral wall portion (311) C, and a handle protruding from the bottom center of the main body (311) A. Part (311) E, the main body (311) A bottom surface and the upper collar part (311) B
The ribs (311) F and (311) G are respectively formed and used in the same manner as in the eighth embodiment, but as shown in FIG. 22, for example, a coating film (4) applied to the member (1) Of the surrounding wall (31
1) The lower collar (311) D protruding from the lower edge of C allows the masking material (311) to be more completely removed from the hole (22). The masking material
(311) is the rib (311) on the bottom of the insertion portion (311) A and the upper flange (311) B.
11) Because it is reinforced by F and (311) G, it is difficult to collapse or break. And, like the masking material of the seventh embodiment, it is easy to vacuum form and can be reused.

FIGS. 23 and 24 show a twelfth embodiment of the present invention.
An example is shown. The masking material (312) of the present embodiment has a cylindrical container-shaped insertion portion (312) A having a vertical rib (312) C formed on the outer periphery.
And a flange (312) B formed on the upper edge of the insertion portion (312) A. The masking material (312) is the same as that of the seventh embodiment shown in FIG.
4, the vertical rib (312) C of the masking material (312) is elastically pressed against the inner wall of the hole (22). Therefore, the masking material (312) does not fall off before or during painting due to vibration or the like, and the masking material (312) is reinforced by the vertical ribs (312) C. And, like the masking material of the seventh embodiment, it is easy to vacuum form and can be reused.

Masking material D Masking material D is applied to the eaves-like portion of the member where surface treatment should not be performed, and 50% by weight of calcium carbonate is mixed.
Manufactured by vacuum molding using polyphenylene oxide-polyamide polymer alloy as a material.

FIGS. 25 and 26 show a thirteenth embodiment of the present invention.
An example is shown. The masking material (313) of the present embodiment comprises a cylindrical container-shaped main body (313) A and a fitting groove (313) B provided from the opening end of the main body (313) A. The above masking material (31
3) is a member as shown in FIG. 26 through the fitting groove (313) B.
(1) is fitted to the eave-shaped portion (23) to protect the portion (23) from painting, and the coating (4) is not formed on the portion (23). After the treatment, the masking material (313) is manually separated from the portion (23). And it is easy to vacuum form and reusable.

FIG. 27 shows a fourteenth embodiment of the present invention. The masking material (314) of this embodiment is a square box-shaped main body (31).
4) A and a fitting groove (31) provided from the open end of the main body (314) A.
4) B, which is used similarly to the thirteenth embodiment. And, like the masking material of the thirteenth embodiment, vacuum forming is easy and reusable.

FIGS. 28 to 33 show examples in which the above masking materials A, B, C, and D are applied to rust-proofing, sound-proofing, and vibration-proofing treatment for a floor back (12) of a vehicle body (11). In FIG. 28,
The masking material of the present invention is A, B,
Used for each part of C, D and E. That is, in FIG. 29, the hole (22) A of the portion A is a hole for inserting the spring shaft of the front wheel, and the periphery of the hole (22) A is a spring seat. The inside of the hole (22) A and its surroundings are protected using the masking material (37) of the embodiment, and in FIG.
In FIG. 31, the bolt (21) A is protected by using a masking material (36) belonging to the masking material B, for example, in the sixth embodiment, and in FIG. For example, the inside of the drainage hole (22) C is protected by using the masking material (38) of the eighth embodiment to which it belongs, and in FIG. The masking material (313) is used to protect the bracket (23) D, and FIG.
In the above, the inside of the screw hole (22) E is protected by using, for example, the masking material (31) of the first embodiment belonging to the masking material A in the component mounting screw hole (22) E of the E portion.

FIGS. 34 to 38 show a fifteenth embodiment of the present invention. The masking material (315) of this embodiment is used to protect the concave portion of the member. Masking material (315)
Is manufactured by vacuum forming the same two-layer sheet as the masking material B, and includes a main body (315) A and an adhesive layer (315) B formed on the outer peripheral edge of the main body (315) A. The recess to which the masking material (315) is applied is shown in FIG. In the figure, (24) is an air intake below the bumper (13). Inside the air intake (24) is a pair of columns (24) A, (24) A and a vertical rail.
(24) B and crossbar (24) C are provided. The masking material (315) is adapted to fit into the inside shape of the air intake (24) so as to fit the support post fitting grooves (315) C, (315) C, the vertical bar fitting groove (3).
15) D, and a crosspiece fitting groove (315) E are provided. The adhesive layer (315) B may be covered with a release sheet, a protective film, or the like. When using the masking material (315), the release sheet is peeled off. The above masking material
(315) is fitted inside the air inlet (24) as shown in FIG. 37. At this time, the support fitting groove (3) of the masking material (315) is used.
15) C, (315) C are the columns (24) A, (24) A of the air intake (24)
The vertical bar (24) B and the horizontal bar (24) C are fitted into the vertical and horizontal bar fitting grooves (315) D and (315) E, and the adhesive layer (315) B
Through the peripheral surface of the masking material body (315) A through the air inlet
Adhere to (24). Masking material (315) A in this way
Fits in close contact with the inner shape of the air inlet (24) and closely fits.
After the masking material (315) is fitted inside the air inlet (24), paint is sprayed with a spray (5) as shown in FIG. 37, and the periphery of the air inlet (24) is painted. (4), but the coating (4) is not formed inside the air inlet (24) protected by the masking material (315). After the coating, as shown in FIG. 38, the masking material (315) is peeled off from the inside of the air inlet (24) by the operator's hand. The masking material (315) can be easily vacuum formed and can be reused without being deformed by heating after coating.

FIGS. 39 and 40 show a sixteenth embodiment of the present invention.
An example is shown. The masking material (316) of this embodiment protects the bumper (13) as in the fifteenth embodiment, and the masking material (316) fits into the air inlet (24) of the bumper (13). A mating portion (316) A is formed, and the mating portion is formed.
The lower edge of (316) A is formed with a U-shaped flange (316) B, and the horizontal ribs (316) C, (316) D and the vertical ribs (316) E, (316)
F is formed for reinforcement. The above masking material (3
16) is attached to the bumper (13) by fitting it to the air inlet (24) of the bumper (13) through the fitting portion (316) A. At this time, the fitting of the masking material (316) is performed. The fitting portion (316) A is reinforced by the flange (316) B and is prevented from being deformed, so that the fitting operation is easy. In this state, the surface of the flange (316) B and the lower edge of the air inlet (24) of the bumper (13) are substantially flush with each other as shown in FIG. Can be stopped. The masking material (316) of the present embodiment is a polyphenylene oxide.
Sid - a polyamide port Rimaaroi the material.

FIGS. 41 to 43 show a seventeenth embodiment of the present invention. The masking material (317) of this embodiment also protects the bumper (13). That is, the bumper (13) is provided with a pair of left and right air intakes (24), (24), and inside the air intakes (24), (24), the vertical rails (24) B, (24) ) B and crossbars (24) C, (24) C are provided, and the air intakes (24),
As shown in FIG. 42, grooves (24) A and (24) A are formed on the upper edge of (24), and steps (24) D and (24) D are formed on the lower edge. I have. The masking material (317) is used for the bumper (13).
The masking material (317) has a pair of left and right air fittings (24), (24) fitted to the bumper (13). (317) A, (31
7) A is formed, fitting flanges (317) B, (317) B are formed on the upper edge of the fitting portions (317) A, (317) A, and the lower edge has a U-shaped cross section. The bent portions (317) C and (317) C are formed, and the horizontal beam fitting portions (317) D and (317) D and the vertical beam fitting portions (317) E and (317) E
Are formed. The masking material (317) is a bumper
(13) is fitted to the air inlets (24), (24) through the fitting portions (317) A, (317) A, and the horizontal rail (24) of the air inlets (24), (24) is ) C, (2
4) C and the vertical bars (24) B, (24) B are connected to the horizontal bar fitting portions (317) D, (317) D of the masking material (317) and the vertical bar fitting portions (31).
7) Bumper (13)
At this time, as shown in FIG. 43, the fitting flanges (317) B, (317) B of the upper edges of the fitting portions (317) A, (317) A of the masking material (317) are attached. Bumper (13) air inlet (2
4) Fit the upper edge grooves (24) A, (24) A of (24) to hold the upper edge without using an adhesive tape. In addition, the fitting part (31
7) The lower edges of A and (317) A are reinforced by the bent portions (317) C and (317) C to prevent deformation, so that the fitting operation is easy. Then, in this state, the surfaces of the bent portions (317) C, (317) C and the steps (24) D, (2) of the air intakes (24), (24) of the bumper (13).
4) Since D is on the substantially same plane as shown in FIG. 43, it can be easily fixed from above with an adhesive tape (317) F. The masking material (317) of this embodiment is made of the same polymer alloy as the masking material of the sixteenth embodiment.

FIGS. 44 and 45 show an eighteenth embodiment of the present invention.
An example is shown. The masking material (318) of this embodiment is used for protecting a plurality of convex portions of the member. The masking material (318) is a vacuum molded product of a laminated sheet similar to the masking material B, and a main body (318) A, and fitting portions (318) B, (318) protruding from the main body (318) A. B As shown in FIG. 45, the masking material (318) has a plurality of projections (25) to which the surface treatment of the member (1) is not to be subjected, and the fitting portions (318) B, (31)
8) Protect the convex portion (25) by attaching it via B. And and readily vacuum forming as well as between <br/> Sukingu material B are reusable.

FIGS. 46 to 48 show a nineteenth embodiment of the present invention. The masking material (319) of the present embodiment is used to protect the planar portion of the member. The masking material
(319) is a main body (319) A made of the same laminated sheet as the masking material B, and an adhesive layer (31) formed on the back surface of the main body (319) A.
9) B, the adhesive layer (319) B is a release sheet (319) C
Covered by The masking material (319) is removed from the automobile (1) as shown in FIG.
It is attached to the periphery (27) of the window (14) of 3) via the adhesive layer (319) B. Thereafter, the automobile (13) is coated and heated to form a coating (4). After painting, apply the masking material (319) around the window (14).
When peeled from (27), the periphery (27) of the window (14) was protected by the masking material (319) during painting, so that the coating (4) was not formed on the periphery (27) as shown in FIG. The masking material (319) can be easily vacuum formed and can be reused without being deformed by heating after coating.

In addition to the above embodiment, in the fifteenth embodiment, in order to fix the masking material (315) inside the air inlet (24), the masking material (315) is attached to the outer periphery of the main body (315) A of the masking material (315). The adhesive layer (315) B was formed, but instead of the adhesive layer (315) B, an adhesive tape (315C) was applied over the masking material (315) and the periphery of the air inlet (24) as shown in FIG. It may be fixed by wearing. The adhesive tape (315) C may be attached over the entire circumference of the masking material (315) or may be attached partially. Further, as shown in FIG. 50, an adhesive tape (315) D for clearly separating the painted portion and the unpainted portion may be attached from above the adhesive tape (315) C. The adhesive tape (315) D for such a purpose is called a parting tape, and the parting tape is used as needed even when the masking material (315) is fixed by the adhesive layer (315) B.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment.

FIG. 2 is a sectional view of a masking state of the first embodiment.

FIG. 3 is a cross-sectional view of a peeled state of the first embodiment.

FIG. 4 is a perspective view of a second embodiment.

FIG. 5 is a perspective view of a third embodiment.

FIG. 6 is a sectional view of a masking state according to a third embodiment.

FIG. 7 is a perspective view of the third embodiment when integrally molded.

FIG. 8 is a perspective view of a fourth embodiment.

FIG. 9 is a perspective view of a fifth embodiment.

FIG. 10 is a sectional view of a masking state according to a fifth embodiment.

FIG. 11 is a sectional view showing another masking state of the fifth embodiment.

FIG. 12 is a perspective view of the fifth embodiment when integrally molded.

FIG. 13 is a perspective view of a sixth embodiment.

FIG. 14 is a sectional view of a masking state according to a sixth embodiment.

FIG. 15 is a perspective view of a seventh embodiment.

FIG. 16 is a sectional view of a masking state according to a seventh embodiment.

FIG. 17 is a perspective view of an eighth embodiment.

FIG. 18 is a perspective view of a ninth embodiment.

FIG. 19 is a sectional view of a masking state according to a ninth embodiment.

FIG. 20 is a perspective view of a tenth embodiment.

FIG. 21 is a perspective view of an eleventh embodiment.

FIG. 22 is a sectional view of a masking state according to an eleventh embodiment.

FIG. 23 is a perspective view of a twelfth embodiment.

FIG. 24 is a sectional view showing a masking state of the twelfth embodiment.

FIG. 25 is a perspective view of a thirteenth embodiment.

FIG. 26 is a sectional view of a masking state according to a thirteenth embodiment.

FIG. 27 is a perspective view of a fourteenth embodiment. FIGS. 28 to 33 show application examples of the present invention.

FIG. 28 is a perspective view of an automobile body.

FIG. 29 is an explanatory view of part A.

FIG. 30 is an explanatory view of part B.

FIG. 31 is an explanatory view of a part C.

FIG. 32 is an explanatory view of a portion D.

FIG. 33 is an explanatory view of a portion E.

FIG. 34 is a perspective view of the back side of the masking material of the fifteenth embodiment.

35 is a sectional view taken along line AA in FIG.

FIG. 36 is a partial perspective view around the air inlet of the bumper.

FIG. 37 is an explanatory view of a coating state of the fifteenth embodiment.

FIG. 38 is an explanatory diagram of a masking material peeling state according to a fifteenth embodiment.

FIG. 39 is a perspective view of a sixteenth embodiment before a masking material is attached.

FIG. 40 is a sectional view of a sixteenth embodiment in a state where a masking material is attached.

FIG. 41 is a perspective view of a seventeenth embodiment before a masking material is attached.

FIG. 42 shows a state before a masking material is attached in the seventeenth embodiment.
AA sectional view in FIG.

FIG. 43 is a view A- of the masking material mounted state of the seventeenth embodiment.
A sectional view

FIG. 44 is a perspective view of an eighteenth embodiment.

FIG. 45 is a sectional view showing a masking state of the eighteenth embodiment.

FIG. 46 is a perspective view of a nineteenth embodiment.

FIG. 47 is an explanatory view of a coating state of a nineteenth embodiment.

FIG. 48 is an explanatory view of a masking material peeling state according to a nineteenth embodiment.

FIG. 49 is an explanatory view of a state in which a masking material is fixed with an adhesive tape.

FIG. 50 is an explanatory view showing a state in which a parting tape is further attached.

[Explanation of symbols]

 31-319 Masking material 31A-319A Main body

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-31862 (JP, A) JP-A-2-126966 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B05B 15/04 B05C 17/06 B05D 1/32

Claims (1)

(57) [Claims] 1. A methylpentene copolymer, polysulfo
, Polyether sulfone, polyphenylene sulphie
, Polyphenylene oxide, polyamide imide, poly
Consists of ether imide and polyether ether ketone
One type of engineering plastic selected from the group
Or two or more, and polyamide and / or polystyrene
Material made of a polymer alloy