JPH05261323A - Masking material - Google Patents

Abstract

PURPOSE:To make it possible to use a masking material repeatedly even in a surface treatment including a high-temperature heating process by manufacturing the masking material using an engineering plastics. CONSTITUTION:A masking material 31 is manufactured using an engineering plastics as a raw material. When manufacturing the masking material 31 based on the engineering plastics the material is made into an ordinary film or sheet form and then is vacuum-molded into a specified form as an optimal mass- production method. As an alternative method, blow-molding or injection molding is applicable. The engineering plastics is highly resistant against heat, so that the masking material 31 based on the engineering plastics is mechanically strong and does not become soft and deformed even at higher than 150 deg..

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 so that the predetermined position of the member is not coated with the coating.

[0002]

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

As described above, as the masking material, there has been conventionally provided a material made of a thermoplastic resin mixed with an inorganic filler (Japanese Patent Laid-Open No. 126966/1990).
Among the thermoplastic materials, polyolefin is particularly excellent in solvent resistance, and by mixing an inorganic filler, the polyolefin is mechanically reinforced, and further has high thermal conductivity and improved heat resistance. The masking material can be reused.

[0004]

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

[0005]

The present invention provides a masking material made of engineering plastic (hereinafter referred to as engineering plastic) as a means for solving the above-mentioned conventional problems.

The engineering plastics used in the present invention include, for example, methylpentene copolymer (TPX), polyethylene terephthalate (PET), polyamide (PA), polycarbonate (PC), cellulose acetate (CA), polysulfone (PSF), polyether sulfone ( PE
S), polyphenylene sulfide (PPS), polyphenylene oxide (PPO), polyamide imide (PA
I), polyether imide (PEI), polyether ether ketone (PEEK), polyimide (PI), etc., thermoplastic type, polyallyl ether, etc., liquid crystal type, fluororesin, etc., compression molding type, amorphous polymer, aminobimaleimide. , Bimaleimido azine-based thermosetting aromatic polyimide, and the like. The engineering plastic may be a foam, or two or more kinds may be mixed or laminated.

The 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, bentonite, white carbon, carbon black, iron powder, aluminum powder, stone powder, blast furnace slag, fly ash, synthetic fiber,
Fillers such as vegetable fibers, glass fibers, carbon fibers, ceramic fibers, whiskers may be mixed. The above filler is usually added in an amount of about 10 to 200% by weight based on the engineering plastic.

Further, the engineering plastics include polyolefins such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, polyvinyl chloride, polystyrene, polymethacrylate, polyvinylidene chloride, styrene-butadiene copolymer, One or more of thermoplastics such as polyester and polyamide, foams of the above thermoplastics, polyurethane foams, etc. may be mixed or laminated.

On the surface of the engineering plastic, for example, a treatment such as corona discharge treatment or a primer treatment is performed to increase the affinity for the paint or the adhesive, or a mold release treatment is performed for decreasing the affinity for the paint or the adhesive. You may. As the primer used in the above-mentioned primer treatment, chlorinated polypropylene, modified polyolefin or olefin copolymer such as ethylene-vinyl acetate copolymer, styrene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber, synthetic rubber such as polybutadiene. , Acrylic synthetic resin, vinyl synthetic resin, synthetic rubber or synthetic resin based primer such as acrylic synthetic resin, vinyl synthetic resin, amino synthetic resin or epoxy resin containing amino group, amide group, etc., or aluminum Aluminum alcoholate or aluminum chelate compound such as isopropylate and 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 tetrabutyl titanate, triborate -N
-Borate compounds such as butyl and triphenyl borate, phosphate esters such as trioleyl phosphate and tridecyl phosphate, metal carboxylates such as magnesium stearate and cobalt naphthenate, and metals such as n-dodecyl mercapto potassium salt Thiocarboxylate, thiodicarboxylate such as zinc 2-ethylhexanedithioate, nickel dimethyldithiocarbamate, metal dithiocarbamate such as copper dimethyldithiocarbamate, metal sulfonate such as nickel benzenesulfonate, organic such as vanadium dibutyl phosphate There are low molecular weight primers such as metal phosphates,
The above-mentioned primers are used alone or as a mixture of two or more kinds. As the above-mentioned primer, a synthetic resin or rubber having a good adhesiveness to both a paint vehicle of the engineering plastic or a synthetic resin other than engineering plastic generally used as an adhesive, or the above-mentioned various primers is used. Particularly desirable as the primer are acrylic synthetic resins and amino synthetic resins containing a quaternary ammonium salt. To apply a primer treatment using one kind or a mixture of two or more kinds of the above various primers,
A solution or emulsion (latex) of one kind or a mixture of two or more kinds of the above-mentioned various kinds of primers is applied to the engineering plastic surface as a material of the masking material and dried.
Prior to the primer treatment, the engineering plastic surface may be subjected to an affinity treatment. Examples of the affinity treatment applied to the engineering plastic surface include a flame treatment and a sulfuric acid treatment that slightly carbonize the surface to give an affinity, and a corona discharge treatment that roughens and slightly carbonizes the surface.

Further, as the release agent used for the surface treatment of the engineering plastic, a silicone type release agent, a fluorine type release agent,
There are fatty acid salt-based release agents, paraffin-based release agents, wax-based release agents and the like. In order to perform mold release treatment using one or a mixture of two or more of the above various release agents, the solution or emulsion (latex) or melt of the mixture of one or two or more of the above various primers is masked with the mask. It is applied to the engineering plastic surface as a material of the material and dried.

The engineering plastics may also be colored by coloring with pigments or dyes for identifying the masking site, and further flame retardants, flame retardants, insect repellents, preservatives, anti-aging agents, ultraviolet absorbers, A third component such as a foaming agent such as a chemical foaming agent or a capsule-type foaming agent may be added. These third components may be added alone or as a mixture of two or more kinds.

In order to manufacture a masking material by the above-mentioned engineering plastics, a method of forming a film or sheet into a predetermined shape by vacuum forming is usually the most suitable method for mass production. Molding, injection molding or the like may be applied. The engineering plastic film or sheet may be either a non-stretched type or a stretched type.

[0013]

The engineering plastic has excellent heat resistance, and the masking material made of this material has high mechanical strength and does not soften and deform even at a temperature of 150 ° C. or higher.

[0014]

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

[0015]

【Example】

Masking Material A The masking material A is applied to the flat portion of the member that should not be coated.

1 to 3 show a first embodiment of the present invention. In the figure, the masking material (31) is a rectangular box-shaped body (31).
A and a pressure-sensitive adhesive layer (31) B formed on the lower surface of the main body (31) A, made of phenylene sulfide mixed with 50% by weight of calcium carbonate, and manufactured by vacuum forming.
The adhesive layer (31) B is covered with a releasable sheet (31) C such as polyethylene film, polypropylene film or release paper. Thus, the masking material (31) has an adhesive layer (3
Since 1) B is protected by the release sheet (31) C, it can be stacked and is convenient for transportation and storage.

As shown in FIG. 2, the masking material (31) is adhered to the portion (2) of the member (1) which should not be coated with a flat plate after the release sheet (31) C is peeled off. Protect. Then, the paint is spray-painted 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 way, the masking material (31) is peeled off by a worker's hand before or after the heat treatment as shown in FIG. 3, for example.
The masking material (31) of the present embodiment is made of the sheet as described above, and therefore can be easily vacuum-formed and can be reused without being deformed even after the heat treatment. Further, the surface of the masking material (31) treated with silicon has a low affinity with the coating material and facilitates the peeling of the coating material, which is more convenient when the coating material is peeled and the masking material is reused. Is.

FIG. 4 shows a second embodiment of the present invention.
In the masking material (32) of the present embodiment, the main body (32) A has a cylindrical container shape and is manufactured by injection molding using polyether ether ketone mixed with 40% by weight of calcium carbonate as a 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 plate-like 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, the masking material (33) is a rectangular box-shaped body.
(33) A, a collar portion (33) B provided around the upper edge of the main body (33) A, and an adhesive layer (33) C formed on the lower surface of the main body (33) A. It is manufactured by vacuum forming using mixed polyethylene terephthalate as a material. The adhesive layer (3
3) C is covered with a release sheet (33) D. The masking material (33) is also applied to the flat plate-shaped portion (2) of the member (1) as in the masking material (31) of the first embodiment.
As shown in Fig. 6, the coating film (4) is cut by the collar portion (33) B of the masking material (33), so that the masking material (33) is
It can be easily detached by the operator's hand without being obstructed by (4). And like the masking material of the first embodiment, vacuum forming is easy and reusable. The masking material (3
As for 3), as shown in FIG. 7, it is desirable that a plurality of masking materials (33) are arranged vertically and horizontally from the above sheet and integrally vacuum-formed. In this case, the brim portion (33) B of the masking material (33) is provided with a groove or a groove (33) E on one side or both sides thereof so that the individual masking materials (33) can be easily torn off by hand. The collar part (3
3) The notch or groove (33) E of B may be integrally formed at the time of vacuum forming the masking material (33), or may be separately formed after the vacuum forming.

FIG. 8 shows a fourth embodiment of the present invention. The masking material (34) of this embodiment is a box-shaped main body (a box-shaped main body (34) D in which a box-shaped handle (34) D is erected from the bottom. 34) A and the main body (3
4) A pressure-sensitive adhesive layer (34) B formed on the lower surface of A, and is manufactured by vacuum forming using polyamide as a material mixed with 40% by weight of calcium carbonate. The adhesive layer (34) B is covered with a release sheet (34) C. The masking material (3
4) is used in the same manner as in the first embodiment, but since it has the grip portion (34) D, it is extremely easy to attach and detach. 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 the flat portions and convex portions of the member which should not be coated. The masking material B is manufactured by vacuum forming a two-layer sheet of polyester imide mixed with 30% by weight of glass fiber and polypropylene sheet mixed with 15% by weight of calcium carbonate and 5% by weight of styrene-butadiene elastomer. It

9 and 10 show a fifth embodiment of the present invention. In the figure, the masking material (35) is formed on the main body (35) A in the shape of a rectangular container, the flange (35) B formed on the outer periphery of the upper edge of the main body (35) A, and the upper surface of the flange (35) B. Adhesive Layer (35)
The adhesive layer (35) C comprises a release sheet (35) D
Are coated. As shown in FIG. 10, the masking material (35) is formed into a flat plate shape of the member (1) by peeling the release sheet (35) D and interposing the adhesive layer (35) C on the upper surface of the collar portion (35) B. Stick it on the part that should not be painted (2). And paint the film (4)
After the formation of the mask, the operator removes the masking material (35). A hole may be provided in the portion (2). Further, the masking material (35) of this embodiment may be attached to the convex portion (21) of the surface of the member (1) to protect the convex portion (21) as shown in FIG. The masking material (3
5) is easy to vacuum-form, does not deform even by heat during surface treatment, and can be reused after removal.

In the method of manufacturing the masking material (35) of this embodiment, what is particularly admired is that a plurality of masking materials (35) are arranged vertically and horizontally from the two-layer sheet as shown in FIG. Vacuum forming is desirable. In this case, make a notch (35) E in the release sheet (35) D and, correspondingly, make a notch or groove (35) F on one or both sides of the collar (35) B of the masking material (35). Provide individual masking material
Make it easy to tear (35) by hand. The notch or groove (35) F of the collar portion (35) B may be integrally formed during vacuum forming of the masking material (35), or may be separately formed after vacuum forming.

13 and 14 show a sixth embodiment of the present invention. In the figure, a masking material (36) is 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 an outer periphery of the flange (36) B. And the adhesive layer formed on the upper surface of the flange (36) B.
A release sheet (36) consisting of (36) C and the adhesive layer (36) C.
D is coated. The masking material (36) is a release sheet (3
6) D is peeled off and, for example, attached to the part (2) having the hole (22) of the member (1) through the adhesive layer (36) C on the upper surface of the collar (36) B, and then to FIG. As shown in the drawing, the coating film (4) is formed, but the coating film (4) is formed on the brim (3) of the masking material (36).
6) Since it is cut by the bent portion (36) E of B, the masking material (36) can be easily detached by hand without being disturbed by the coating film (4). 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 manufactured by vacuum forming using a sheet of methylpentene copolymer as a material.

15 and 16 show a seventh embodiment of the present invention. The masking material (37) of the present embodiment comprises 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. As shown in FIG. 16, the masking material (37) protects the inside of the hole (22) by inserting it into the hole (22) of the member (1) via the insertion part (37) A. Further, the periphery of the hole (22) is protected by the collar (37) B. The masking material (37) is inserted into the hole (22) and then coated to form a coating film (4) as shown in FIG. 16. The inside of the hole (22) and the periphery of the hole (22) are formed. The coating film (4) is not formed on the film. Then, the masking material (37) is usually removed by the hand of the 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, a fourth layer is formed on the surface of the masking material (37).
A primer treated with an acrylic synthetic resin containing a graded ammonium salt has good adhesiveness to the paint, and the paint does not peel off from the surface of the masking material even after heat treatment. Without
Further, it is more convenient when the masking material is reused.

FIG. 17 shows an eighth embodiment of the present invention. The masking material (38) of this embodiment has a handle (38) from the bottom.
C-shaped container-like insertion part (38) A and the insertion part (38) A
And a collar portion (38) B formed on the outer periphery of the upper edge of the upper part. The masking material (38) is used in the same manner as in the seventh embodiment, but since it has the grip portion (38) C, it can be attached and detached extremely easily to the hole portion. And like the masking material of the seventh embodiment, vacuum forming is easy and reusable.

18 and 19 show the 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 the flange portion (39) B. It consists of a rising part (39) C which is erected from the outer circumference. 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 collar portion (39) B. Rise (3
9) The coating film (4) is cut by C as shown in FIG.
Thus, the masking material (39) can be removed smoothly.
And like the masking material of the seventh embodiment, vacuum forming is easy and reusable.

FIG. 20 shows a tenth embodiment of the present invention. The masking material (310) of this embodiment includes a cross-shaped container-shaped insertion portion (310) A and a collar portion (3) formed on the upper edge of the insertion portion (310) A.
10) B and a peripheral wall portion (310) C standing upright from the outer periphery of the collar portion (310) B
Consists of. The masking material (310) is used in the same manner as in the ninth embodiment, but since the insertion part (310) A has a cross shape, the insertion part (3
10) Since the outer periphery of A only partially contacts the inner wall of the hole, it is easy to attach and detach, and the material is saved as compared with the cylindrical container. And like the masking material of the seventh embodiment, vacuum forming is easy and reusable.

21 and 22 show the eleventh embodiment of the present invention. The masking material (311) of the present embodiment is a container-shaped insertion portion (311) A, an upper collar portion (311) B formed on the upper edge of the insertion portion (311) A, and the upper collar portion (311). B peripheral wall portion (311) C that hangs from the peripheral edge of B, and a lower collar portion that extends from the lower edge of the peripheral wall portion (311) C
(311) D, a grip portion (311) E protruding from the center of the bottom surface of the main body (311) A, and ribs formed on the bottom surface of the main body (311) A and the upper flange portion (311) B, respectively. 8th consisting of (311) F and (311) G
It is used in the same manner as in the example, but as shown in FIG.
The lower brim portion (311) D extended from the lower edge more completely performs the removal of the masking material (311) from the hole portion (22). The masking material (31
1) is the rib (311) on the bottom of the insert (311) A and the upper collar (311) B
Since it is reinforced by F and (311) G, it is difficult to be crushed or destroyed. And like the masking material of the seventh embodiment, vacuum forming is easy and reusable.

23 and 24 show a twelfth embodiment of the present invention. The masking material (312) of the present embodiment is a cylindrical container-shaped insertion portion (312) A having vertical ribs (312) C formed on the outer periphery,
The insertion portion (312) A and the flange portion (312) B formed on the upper edge of the insertion portion (312) A. The masking material (312) is the same as in the seventh embodiment shown in FIG.
As shown in Fig. 5, the vertical ribs (312) C of the masking material (312) are elastically pressed against the inner wall of the hole (22). Further, the vertical ribs (312) C reinforce the masking material (312) without dropping off before or during coating due to vibration or the like. And like the masking material of the seventh embodiment, vacuum forming is easy and reusable.

Masking Material D The masking material D is applied to the eave-shaped portion of the member which is not to be surface-treated, is made of polycarbonate mixed with 50% by weight of calcium carbonate, and is manufactured by vacuum forming.

A thirteenth embodiment of the present invention is shown in FIGS. The masking material (313) of this embodiment comprises a cylindrical container-shaped main body (313) A and a fitting groove (313) B provided from the open end of the main body (313) A. The above masking material (313)
26 through the fitting groove (313) B as shown in FIG.
It is fitted to the eaves-like portion (23) of the above to protect the portion (23) from painting, and the coating film (4) is not formed on the portion (23). After the treatment, the masking material (313) is manually separated from the portion (23). And vacuum forming is easy and reusable.

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

28 to 33, the masking material A,
An example is shown in which B, C, and D are applied to the rust-proof, sound-proof and vibration-proof treatment of the underfloor (12) of the automobile body (11). In FIG. 28, the masking material of the present invention is A, B, C of the underfloor (12) of the vehicle body (11),
Used for each part of D and E. That is, in FIG. 29, the hole (22) A in the portion A is a hole for inserting the spring shaft of the front wheel. Since the periphery of the hole (22) A is the seat of the spring, it belongs to the masking material C, for example, No. 7 The inside of and around the hole (22) A is protected by using the masking material (37) of the embodiment, and the component mounting bolt (21) A at the portion B in FIG. 30 belongs to the masking material B, for example, the sixth embodiment. The bolt (21) A is protected by using the masking material (36) of the example, and the draining hole (22) C of the portion C in FIG. 31 belongs to the masking material C, for example, the masking material (38) of the eighth embodiment. ) Using the drainage hole
(22) The inside of the C is protected, and in FIG. 32, the bracket for mounting parts (23) D in FIG.
13) to protect the bracket (23) D, and in FIG. 33, the component mounting screw hole (22) E in FIG. 33 is provided with the masking material (31) of the first embodiment belonging to the masking material A, for example. Is used to protect the inside of the screw hole (22) E.

A fifteenth embodiment of the present invention is shown in FIGS. The masking material (315) of this embodiment is used to protect the concave portion of the member. The 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. Consists of. The recess to which the masking material (315) is applied is shown in FIG. In the figure, (24) is an air intake under the bumper (13). Inside the air intake (24), a pair of columns (24) A, (24) A and a vertical bar (2
4) B and cross rail (24) C are provided. In order to fit the masking material (315) to such an inner shape of the air intake (24), the pillar fitting grooves (315) C, (315) C, and the vertical rail fitting groove (31)
5) D and a horizontal rail fitting groove (315) E are provided. The adhesive layer (315) B may be covered with a release sheet or a protective film. When the masking material (315) is used, the release sheet is peeled off and used. The above masking material
As shown in FIG. 37, the (315) is fitted inside the air intake (24), but at this time, the strut fitting groove (3) of the masking material (315) is fitted.
15) C and (315) C have columns (24) A and (24) A of the air intake (24)
Vertical rail and horizontal rail fitting grooves (315) D and (315) E, and vertical rail (24) B and horizontal rail (24) C are fitted, and the adhesive layer (315) B
The main surface of the masking material (315) A through the air intake
Stick it to (24). In this way, masking material (315) A
Fits closely to the inner shape of the air intake port (24) and is in close contact with it.
After fitting the masking material (315) on the inside of the air intake (24), spray paint (5) to coat the periphery of the air intake (24) as shown in FIG. (4) is formed, but the coating film (4) is not formed inside the air intake port (24) protected by the masking material (315). After coating, the masking material (315) is peeled from the inside of the air intake port (24) by the operator's hand as shown in FIG. The masking material (315) is easy to vacuum form and can be reused without being deformed by heating after coating.

39 and 40 show a sixteenth embodiment of the present invention. The masking material 316 of this embodiment is used to protect a plurality of convex portions of the member. The masking material (316) is a main body (316) A which is a vacuum formed product of a laminated sheet similar to that of the fifteenth embodiment, and fitting portions (316) B, (316) protruding from the main body (316) A. ) B and. The masking material (3
16) is the fitting portion (316) B, (316) B on the plurality of convex portions (25) which should not be surface-treated on the member (1) as shown in FIG.
To protect the convex portion (25). And the fifteenth
Like the masking material of the example, it can be easily vacuum-formed and can be reused.

41 to 43 show a seventeenth embodiment of the present invention. The masking material (317) of this embodiment is used to protect the flat portion of the member. The masking material (3
17) is a main body (31
7) A and an adhesive layer (317) B formed on the back surface of the main body (317) A, and the adhesive layer (317) B is covered with a release sheet (317) C. As shown in FIG. 42, the masking material (317) is used to remove the release sheet (317) C from the window of the automobile (13).
(14) Attached to the peripheral edge (27) via the adhesive layer (317) B. Thereafter, the automobile (13) is painted and heated to form the coating film (4). After coating, the masking material (317) is peeled off from the peripheral edge (27) of the window (14).
Since it was protected by 17), the coating film (4) was not formed on the peripheral edge (27) as shown in FIG.
(317) is easy to vacuum form and can be reused without being deformed by heating after painting.

In addition to the above-mentioned embodiment, in the fifteenth embodiment, in order to fix the masking material (315) to the inside of the air inlet (24), the masking material (315) is provided on the outer peripheral edge of the main body (315) A. An adhesive layer (315) B was formed, but instead of the adhesive layer (315) B, a masking material (315) and an air intake were provided as shown in FIG.
You may fix by sticking an adhesive tape (315C) to the periphery of (24). The adhesive tape (315C) may be attached over the entire circumference of the masking material (315) or may be attached partially. Further, as shown in FIG. 45, an adhesive tape (315D) may be attached on the adhesive tape (315C) to clearly separate the painted part and the unpainted part. The adhesive tape (315D) for such a purpose is called a parting tape, but the parting tape is used as necessary even when the masking material (315) is fixed by the adhesive layer (315) B.

[0040]

[Brief description of 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 sectional view showing 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 of the 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 fifth embodiment in a masking state.

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

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

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

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

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

FIG. 16 is a sectional view of the masking state of the 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 the masking state of the 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 showing the masking state of the eleventh embodiment.

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

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

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

FIG. 26 is a sectional view of the thirteenth embodiment in a masking state.

FIG. 27 is a perspective view of a fourteenth embodiment FIGS. 28 to 33 show an application example 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 diagram of section B

FIG. 31 is an explanatory diagram of part C

FIG. 32 is an explanatory diagram of section D

FIG. 33 is an explanatory diagram of part E

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

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

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

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

FIG. 38 is an explanatory view of the masking material peeling state of the fifteenth embodiment.

FIG. 39 is a perspective view of the 16th embodiment.

FIG. 40 is a sectional view of the 16th embodiment in a masking state.

FIG. 41 is a perspective view of a seventeenth embodiment.

FIG. 42 is a drawing for explaining the coating state of the seventeenth embodiment.

FIG. 43 is an explanatory diagram of a peeling state of the masking material according to the 17th embodiment.

FIG. 44 is an explanatory view showing a state in which the masking material is fixed with an adhesive tape.

FIG. 45 is an explanatory diagram of a state in which a parting tape is further attached.

[Explanation of symbols]

 31-317 Masking material 31A-317A Main body

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 30, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Item name to be corrected] 0040

[Correction method] Delete

Claims (1)

[Claims] 1. A masking material comprising engineering plastic as a material.