KR100361610B1 - Masking material - Google Patents

Abstract

An object of the present invention is to provide a masking material that can be reused even in the case of a surface treatment that must be heated at a high temperature. In order to achieve the above object, methylpentene copolymer (TPX), polysulfone (PSF), polyether sulfone (PES), polyphenylene sulfide (PPS), polyphenylene ether having high mechanical strength and high thermal resistance ( PPE), polyamideimide (PAI), polyetherimide (PEI), polyether-etherketone (PEEK), one or two or more engineering plastics selected from the group consisting of polyethylene, polypropylene, ethylene-propylene Using a polymer alloy with a thermoplastic resin selected from the group consisting of copolymers, ethylene-vinylacetate copolymers, polyvinyl chloride, polystyrene, polymethacrylate, polyvinyl chloride, styrene-butadiene copolymers, and polyamides, Make a masking material.

Description

Masking material

Industrial use

The present invention relates to a masking material used to protect the coating from affecting a predetermined position of the member when painting.

Conventional technology

The masking material is attached by attaching an adhesive layer to the masking material when the portion to be protected is flat, and by inserting the inserting portion into the masking material by inserting the inserting portion. If the portion to be protected is plate-shaped, a groove is provided in the masking material, and the groove is attached to the panel, and in the case of the protrusion shape, a fitting portion is formed in the masking material to fit the fitting portion to the protrusion. do. After the surface treatment, the masking material is separated and removed from the portion to be protected.

As a material of such a masking material, the thermoplastics which mixed the inorganic filler conventionally were used. (Unexamined-Japanese-Patent No. 2-126966).

Among the thermoplastic plastic materials, in particular, polyolefins have strong solvent resistance and can be mechanically reinforced by mixing inorganic fillers, and thermal conductivity is improved and heat resistance is also improved, so that masking materials can be reused.

However, in the conventional masking material, even when the inorganic filler is mixed with the thermoplastic, the maximum heat resistance temperature is about 150 ° C., so that the masking material is deformed in the surface treatment process requiring more heating.

Disclosure of the Invention

MEANS TO SOLVE THE PROBLEM This invention is a means for solving the said conventional subject, The methyl pentene copolymer (TPX), Polysulfone (PSF), Polyether sulfone (PES), Polyphenylene sulfide (PPS), Polyphenylene ether (PPE) , Polyamideimide (PAI), polyetherimide (PEI), polyether-etherketone (PEEK), engineering plastics composed of one or two or more phases selected from the group consisting of polyethylene, polypropylene, ethylene-propylene copolymers , A predetermined shape using a polymer alloy with a thermoplastic resin selected from the group consisting of ethylene-vinylacetate copolymer, polyvinyl chloride, polystyrene, polymethacrylate, polyvinyl chloride, styrene-butadiene copolymer, and polyamide It is to provide a masking material characterized in that the molded.

1 is a perspective view of a first embodiment.

2 is a partial cross-sectional view of the first embodiment with the masking member attached thereto.

3 is a partial sectional view of the first embodiment with the masking member removed.

4 is a perspective view of a second embodiment.

5 is a partial cross-sectional view of the second embodiment in a state where the masquerade member is attached.

6 is a partial perspective view when a masking member is formed.

7 is a perspective view of a third embodiment of the present invention.

8 is a perspective view of a fourth embodiment.

9 is a partial sectional view of a fourth embodiment in a state in which a masking member is attached.

10 is another partial sectional view of the fourth embodiment when a masking member is attached.

11 is a perspective view of a fifth embodiment.

12 is a partial sectional view of a fifth embodiment in a state in which a masking member is attached.

13 is a perspective view of a sixth embodiment.

14 is a partial sectional view of the sixth embodiment in a state in which a masking member is attached.

15 is a perspective view of a seventh embodiment.

16 is a perspective view of an eighth embodiment.

17 is a perspective view of a ninth embodiment.

18 is a partial sectional view of a ninth embodiment in a state in which a masking member is attached.

19 is a perspective view of a tenth embodiment.

20 is a partial cross-sectional view of the tenth embodiment in a state in which a masking member is attached.

21 is a perspective view when the present invention is applied to an automobile body.

22 is an explanatory diagram of part A of the application example.

23 is an explanatory diagram of part B of the application example.

24 is an explanatory diagram of part C of the application example.

25 is an explanatory diagram of part D of the application example.

Fig. 26 is an explanatory diagram of part E of an application example.

27 is a perspective view of an eleventh embodiment of the present invention.

Fig. 28 is a sectional view of a state in which a masking material is attached in the eleventh embodiment of the present invention.

FIG. 29 shows the mask material before the masking material is attached in the twelfth embodiment of the present invention.

30 is a cross-sectional view taken along line A-A of FIG.

FIG. 31 is a cross-sectional view along the line A-A in the state where the masking material is attached in FIG. 29; FIG.

32 is a perspective view of a thirteenth embodiment;

Fig. 33 is a sectional view of the masking member attached in the thirteenth embodiment;

34 is a perspective view of a fourteenth embodiment.

35 is a partial sectional view of a fuel tank oil inlet in the fourteenth embodiment;

36 is an explanatory diagram when an adhesive layer is used in the fourteenth embodiment.

37 is a perspective view of a fifteenth embodiment.

38 is a sectional view when the masking member is attached in the fifteenth embodiment.

39 is a front view of a masking material connection in a fifteenth embodiment;

40 is a front view of the masking material connection cut and separated in the fifteenth embodiment;

41 is a perspective view of a sixteenth embodiment;

42 is a side view of the masking member in the sixteenth embodiment with the masking member attached thereto.

43 is a perspective view of a seventeenth embodiment;

44 is a cross-sectional view of the masking member temporarily fixed in the seventeenth embodiment;

45 is a sectional view of the masking member attached in the seventeenth embodiment;

Fig. 46 is a front view of a state in which a masking member is attached in the seventeenth embodiment.

-Explanation of symbols for the main parts of the drawing-

(1) ----------------------------- absence,

(11) ----------------------------- Body,

(12) ----------------------------- The back of the bottom,

(13) ----------------------------- bumper,

(14) ----------------------------- Columnar (pillar),

(15) ----------------------------- Filling port of fuel tank,

(2) ------------------------------ Unpainted parts,

(21) ----------------------------- protrusion,

(22) ----------------------------- hole,

(23) ----------------------------- Cover,

(31)-(317) ---------------------- Masking material,

(31A)-(316A) -------------------- Body.

The engineering plastics of the present invention are methylpentene copolymer (TPX), polysulfone (PSF), polyether sulfone (PES), polyphenylene sulfide (PPS), polyphenylene ether (PPE), polyamideimide ( PAI), polyetherimide (PEI), polyether-etherketone (PEEK). The above-mentioned engineering plastics may be foams, or two or more kinds thereof 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, cray, asbestos, mica. Fillers and reinforcing agents such as calcium silicate, bentonite, white carbon, carbon black, iron, aluminum powder, stone powder, blast furnace slag, flyash, synthetic fiber, natural fiber, glass fiber, carbon fiber, ceramic fiber and whisker May be mixed. The filler is usually added in an amount of about 10 to 200% by weight based on the above-mentioned engineering plastics.

In addition, the above-mentioned engineering plastics include polyethylene, polypropylene, ethylene-propylene copolymer, polyolefin such as ethylene-vinyl acetate copolymer, polyvinyl chloride, polystyrene, polymethacrylate, polyvinylidene chloride, styrene-butadiene copolymer, One kind or two or more kinds of thermoplastic plastics such as polyamide, foams of the thermoplastics, polyurethane foams and the like may be mixed or laminated. Preferred engineering plastics include PPE and polymer alloys such as polyamide, high impact polystyrene, polystyrene and the like.

For example, the surface of the engineering plastic may be treated with corona discharge, primer, or the like to improve affinity for the paint or adhesive, or may be released to affinity for the paint or adhesive. You may reduce this.

The primers used in the above primer treatment include modified polyolefins such as chlorinated polypropylene and ethylene-vinyl acetate copolymers or synthetic rubbers such as olefin copolymers, styrene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber, and polybutadiene. Synthetic or acrylic resins such as acrylic synthetic resins, vinyl synthetic resins, acrylic synthetic resins containing amino groups and amide groups, vinyl synthetic resins, amino synthetic resins, epoxy resins, or epoxy resins, or aluminum isopropylate or aluminum trisacetylacetic acid. Aluminum alcoholate, such as an acetate, or alkyl metals, such as an aluminum chelate compound, 2-ethylhexyl salt, and hexadecyl lithium, organotin compounds, such as dibutyl tin diacetate and di-n-butyl tin dioxide, and methyl vinyl dichlorosilane Silane compounds such as acetylacetone lithium, Metal complex salts of 1,3-dicarbonyl such as cetyl acetone beryllium, organic tartan compounds such as tetrabutyl titanate, boric acid compounds such as tri-n-butyl borate, triphenyl borate, trioleyl phosphate, tridecyl phosphate, etc. Metal thioalcohols such as phosphate esters, metal stearates, carboxylic acid metal salts such as cobalt naphthenate, n-dodecyl mercapto potassium salts, and thiodicarbonates such as zinc 2-ethylhexanedithioate, and dimethyldithiocarba Low molecular weight primers such as dithiocarbamate metal salts such as nickel phosphate and copper dimethyldithiocarbamate, sulfonate metal salts such as nickel benzenesulfonate and organophosphate metal salts such as vanadium dibutyl phosphate; Or it is used as a mixture of 2 or more types. As the primer, a synthetic resin, rubber, or the above-described various primers having good adhesion to both the synthetic resins other than the engineering plastics generally used as the coating vehicle or the adhesive of the engineering plastics are used. Particularly preferred as the above primers are acrylic synthetic resins and amino synthetic resins containing quaternary ammonium salts. In order to perform the primer treatment using one or two or more kinds of the above-described various primers, the surface of the engineering plastics as a material of the masking material described above may be a solution of one or two or more of the above-mentioned various primers or an emulsion (latex). It is applied to and dried.

Prior to the above primer treatment, an affinity treatment may be applied to the surface of the engineering plastic. Examples of the affinity treatment performed on the surface of engineering plastics include a flame treatment that slightly carbonizes the surface to give affinity, a sulfuric acid treatment, and a corona discharge treatment that roughens and slightly carbonizes the surface.

Moreover, as a mold release agent used for the surface treatment of engineering plastics mentioned above, a silicone type mold release agent, a fluorine type mold release agent, a fatty acid type mold release agent, a paraffin type mold release agent, a wax type mold release agent, etc. are mentioned.

In order to perform mold release treatment using one kind or a mixture of two or more kinds of the above-mentioned various release agents, a solution or emulsion (latex) or a melt of one or two or more kinds of the above-described various primers may be used as the material of the masking material. Apply on engineering plastic surface and dry.

In addition, the above-mentioned engineering plastics may be color-coded by pigments or dyes for masking part identification, and may be color-recognized, and a flame retardant, a flame retardant, an insect repellent, an antiseptic, an anti-aging agent, an ultraviolet absorber, a chemical foaming agent, or a foaming agent such as a capsule foaming agent. You may add the 3rd component of. These 3rd component may be added 1 type or in mixture of 2 or more types.

In order to manufacture the masking material using the above-mentioned engineering plastics, a method of forming a mask or a sheet into a predetermined shape by vacuum forming is generally the most suitable method for mass production, but in addition, press molding, blow molding, injection molding, etc. Etc. may be applied. The above-described engineering plastic film or sheet may be either an unstretched type or a stretched type.

Engineering plastics have abundant heat resistance, and the masking material which uses this material has high mechanical strength, and does not soften deformation even at the temperature of 150 degreeC or more.

Therefore, in this invention, a masking material can also be used repeatedly in the surface treatment which has a high temperature heating process.

Masking material A

Masking material A is applied to the flat part which cannot apply the member.

1 to 3 show a first embodiment of the present invention. In the figure, the masking material 31 is formed of a box-shaped body 31A and an adhesive layer 31B formed on the lower surface of the main body 31A, and is made of polyphenylene sulfide mixed with 50% by weight of calcium carbonate. By vacuum forming. The adhesive layer 31B is covered with a release sheet 31C such as polyethylene film, polypropylene film, and release paper. In this way, the masking material 31 can be piled up because the adhesive layer 31B is protected by the release sheet 31C, and is convenient for transportation and storage.

As shown in FIG. 2, the masking material 31 peels off the releasable sheet 31C to the part 2 where the flat coating of the member 1 cannot be applied, and then sticks and protects it.

And a coating is sprayed and sprayed on the surface of the said member 1 by spraying. The part 2 may be provided with a hole part. In this case, the inside of the hole is also protected by the masking material 31.

Thus, after forming the coating film 4, the masking material 31 is peeled off by the hand of an operator, for example, before or after heat processing, for example, as shown in FIG.

The masking material 31 of the present embodiment is formed of a sheet as described above, and thus can be easily vacuum formed, and the masking material 31 is not deformed and can be reused even after the heat treatment.

Further, the silicon treatment on the surface of the masking material 31 is more preferable when the affinity with the paint is lowered, so that the paint is easily peeled off and the paint is peeled off and the masking material is reused.

4 and 5 show a second embodiment of the present invention. In the figure, the masking material 32 consists of the box-shaped main body 32A, the flange part 32B provided around the upper edge of the main body 32A, and the adhesion layer 32C formed in the lower surface of the main body 32A. It is made by vacuum molding using polyethylene terephthalate mixed with 30 wt% talc as a material. The adhesive layer 32C is covered with the release sheet 32D.

The masking material 32 is also applied to the plate-shaped portion 2 of the member 1 similarly to the masking material 31 of the first embodiment, but as shown in FIG. 5, the masking material 32 is applied to the flange portion 32B of the masking material 32. Since the coating film 4 is cut by the masking material 32, the masking material 32 can be detached by an operator's hand without disturbing the coating film 4. Like the masking material of the first embodiment, the vacuum molding is easy and can be reused.

As shown in FIG. 6, it is preferable that the masking material 32 arrange | positions several masking materials 32 vertically and horizontally from the said sheet, and is integrally vacuum-molded. In this case, recesses or grooves 32E are provided on one or both sides of the flange portion 32B of the masking material 32 so that the individual masking materials 32 can be easily pulled out by hand. The recessed portions or grooves 32E of the flange portion 32B may be integrally formed during the vacuum molding of the masking material 32, or may be separately formed after the vacuum molding.

7 shows a third embodiment of the present invention, in which the masking material 33 of the present embodiment has a box-shaped body 33A on which a box-shaped handle portion 33D is erected from its bottom, and a main body 33A. It is composed of a pressure-sensitive adhesive layer 33B formed on the lower surface of the substrate and manufactured by vacuum molding using polyamide mixed with 40% by weight of calcium carbonate as a material. The adhesive layer 33B is covered with the releasable sheet 33C.

The masking material 33 is used in the same manner as in the first embodiment, and has a handle portion 33D, so that the masking material 33 is easily detachable. As in the masking material of the first embodiment, vacuum forming is easy and reuse is possible.

Masking material B

Masking material B is applied to the flat part and the convex part which cannot apply | coat the member. Masking material B is made of polypropylene ester imide mixed with 30% by weight of glass fiber, polypropylene sheet mixed with 15% by weight of calcium carbonate and 5% by weight of styrene-butadiene elastomer and its two-layered sheet as a material for vacuum forming. Is manufactured by.

8 and 9 show a fourth embodiment of the present invention. In the figure, the masking material 34 is a rectangular container shape main body 34A, a flange portion 34B formed on the outer periphery of the upper edge of the main body 34A, and an adhesive layer formed on the upper surface of the flange portion 34B ( 34C), and the release layer 34D is coated on the adhesive layer 34C.

The masking material 34 peels off the releasable sheet 34D as shown in FIG. 9 and the unpainted portion 2 of the flat plate-like member 2 is formed through the adhesive layer 34C on the upper surface of the flange portion 34B. Stick to After the coating film 4 is formed by painting, the masking material 34 is removed by a worker's hand. In addition, a hole may be provided in the portion 2. In addition, the masking material 34 of this embodiment may protect the said convex part 21 by adhering to the convex part 21 on the surface of the member 1, as shown in FIG.

The masking material 34 of this embodiment is easy to be vacuum-formed and can be reused after being removed since it is not deformed by heat during surface treatment.

11 and 12 show a fifth embodiment of the present invention. In the figure, the masking material 35 has a cylindrical container-shaped body 35A, a flange portion 35B formed on the outer periphery of the upper edge of the body 35A, and a bending formed on the outer periphery of the flange portion 35B. It consists of the part 35C and the adhesion layer 350 formed in the upper surface of the flange part 35B, and the release layer 35E is coat | covered by the adhesion layer 35D.

The masking material 35 peels off the releasable sheet 35E and holds, for example, the hole 22 of the member 1 through the adhesive layer 35D on the upper surface of the flange portion 35B ( 2), the coating film 4 is formed of paint as shown in FIG. 12, which is cut by the bent part 35C of the flange portion 35B of the masking material 35. Therefore, the masking material 35 can be easily peeled off by hand without being disturbed by the coating film 4. As in the masking material of the fourth embodiment, the vacuum can be easily formed and reused.

Moreover, the hole part 22 does not need to exist in the part 2 of the member 1.

Masking material C

The masking material C is inserted into the hole of the member to protect the hole.

This masking material (C) is manufactured by vacuum molding using the sheet | seat of the methyl pentene copolymer as a material.

13 and 14 show a sixth embodiment of the present invention. The masking material 36 of this embodiment is comprised from the container shape insertion part 36A and the flange part 36B formed in the outer periphery of the upper edge of the insertion part 36A.

As shown in FIG. 14, the masking material 36 is inserted into the hole 22 of the member 1 through the insertion portion 36A to protect the inside of the hole 22, and furthermore, the flange portion ( The periphery of the hole part 22 is protected by 36B).

The masking material 36 is inserted into the hole 22, and then a coating film 4 is formed as shown in FIG. 14 by painting. The coating film is formed inside the hole 22 and around the hole 22. As shown in FIG. (4) is not formed. And, the masking material 36 is usually removed by a worker's hand after the heat treatment of the coating film 4, the masking material 36 is easy to vacuum forming, and is not deformed by the heat treatment and can be reused. .

The surface of the masking material 36 was primed with an acrylic synthetic resin containing a quaternary ammonium salt, so that the adhesion of the paint was good and the paint did not peel off from the surface of the masking material even after the heat treatment. Since there is no pollution around, it is convenient to reuse the masking material as it is.

FIG. 15 shows a seventh embodiment of the present invention. The masking material 37 of this embodiment consists of a container-shaped insertion part 37A in which the handle part 37C stands up from the bottom part, and the flange part 37B formed in the outer periphery of the upper edge of the insertion part 37A. do.

The masking material 37 is used in the same manner as in the sixth embodiment, but since the grip portion 37C is retained, attachment and detachment to the hole portion is extremely easy. As in the masking material of the sixth embodiment, vacuum forming is easy and can be reused.

FIG. 16 shows an eighth embodiment of the present invention. The masking material 38 of this embodiment has a cross-shaped container insert 38A, a flange portion 38B formed at an upper edge of the insert portion 38A, and a circumferential wall provided upright from the outer periphery of the flange portion 38B. It is comprised by the part 38C.

The masking material 38 is attached to the hole 22 of the member 1 through the inserting portion 38A as in the sixth embodiment, but since the inserting portion 38A is cross-shaped, the outer periphery of the inserting portion 38A is provided. Since the abutment only partially touches the inner wall of the hole, the attachment and detachment is easy, and the material is saved as compared with the cylindrical container shape. As in the masking material of the sixth embodiment, the vacuum molding is easy and can be reused.

17 and 18 show a ninth embodiment of the present invention. The masking material 39 of the present embodiment is formed from the upper flange portion 39B formed at the upper edge of the container-shaped insert portion 39A and the insert portion 39A, and from the circumferential edge of the upper flange portion 39B. 39C of hanging-down main wall part, the lower flange part 39D formed in the lower edge of the main wall part 39C, the handle part 39E protruding from the center part of the bottom face of the main body 39A, and its It is composed of ribs 39F and 39G respectively formed on the bottom surface of the main body 39A and the upper flange portion 39B, and is used in the same manner as in the sixth embodiment, but as shown in FIG. 18, for example, the member 1 ) Is more completely cut by the lower flange 39D formed at the lower edge of the main wall portion 39C, and the peeling of the masking material 39 from the hole portion 22 It is carried out more completely. Moreover, since the masking material 39 is reinforced by the bottom face of the insertion portion 39A and the ribs 39F and 39G of the upper flange portion 39B, the masking material 39 is not crushed or destroyed. As in the masking material of the sixth embodiment, the vacuum molding is easy and can be reused.

Masking material D

The masking material D is applied to the lid portion where the surface treatment of the member is not performed, and is produced by vacuum molding using polycarbonate mixed with 50% by weight of calcium carbonate as a material.

19 and 20, a tenth embodiment of the present invention is shown. The masking material 310 of the present invention is composed of a cylindrical container-shaped main body 310A and a fitting groove 310B provided at an opening end of the main body 310A.

The masking material 310 is fitted to the cover 23 of the member 1 as shown in FIG. 20 through the fitting groove 310B to protect the portion 23 from painting. The coating film 4 is not formed in the part 23. After the treatment, the masking material 310 is peeled off from the portion 23 by hand. Vacuum forming is easy and reusable.

21 to 26 show examples in which the above-mentioned masking materials A, B, C, and D are applied to the rust prevention, sound insulation, and discharge treatment of the rear surface 12 of the bottom of the vehicle body 11. In FIG. 21, the masking material of this invention is used in each part of A, B, C, D, and E of the bottom back surface 12 of the vehicle body 11. In FIG.

That is, in Fig. 22, the hole 22A in the part A is a hole for inserting the spring shaft of the front wheel into the masking material C because the periphery of the hole 22A is the seat of the spring. For example, the masking material 36 of the sixth embodiment is used to protect the inside and the periphery of the hole 22A. In FIG. 23, it belongs to the masking material B to 21 A of component attachment bolts of B part. For example, the masking material 35 of the fifth embodiment is used to protect the bolt 21A. In FIG. 24, the inside of the water drain hole 22B is protected by using the masking material 37 belonging to the masking material C, for example, in the water drain hole 22B of the C portion. In the D part fitting bracket 23A, the bracket 23A is protected by using the masking material 310 of the tenth embodiment, and in FIG. 26, the part mounting screw hole 22C of the part E belongs to the masking material A. For example, the masking material 31 of the first embodiment is used to protect the inside of the screw hole 22C.

27 and 28 show an eleventh embodiment of the present invention. The masking material 311 of this embodiment protects the bumper 13, and the masking material 311 is provided with a fitting portion 311A fitted to the air inlet 13A of the bumper 13, The lower edge of the fitting portion 311A is formed with a c-shaped flange 311B in cross section, and horizontal ribs 311C, 311D, vertical ribs 311E, and 311F are formed for reinforcement. .

The masking material 311 is attached to the bumper 13 by fitting through the fitting part 311A to the air inlet 13A of the bumper 13, but at this time, the fitting part of the masking material 311 is fitted. 311A is reinforced by the flange 311B, and since the deformation | transformation is prevented, the fitting operation is easy. In this state, the surface of the flange 311B and the lower edge of the air inlet 13A of the bumper 13 are approximately in the same plane as shown in FIG. 28, and thus can be easily fixed thereon with the adhesive tape 311G. have.

The masking material 311 of this embodiment mentioned above uses the engineering plastics which mixed polyamide with PPE.

29 to 31 show a twelfth embodiment of the present invention. The masking material 312 of this embodiment is also for protecting the bumper 13. That is, the bumper 13 is provided with a pair of left and right air inlets 13A and 13A, and inside the air inlets 13A and 13A, the length 13C and 13C are transverse to each other. The ribs 13D and 13D are provided, and grooves 13B and 13B are formed in the upper edges of the air inlets 13A and 13A, as shown in FIG. 30. At the lower edge, ends 13E and 13E are formed.

The masking material 312 protects the above air inlets 13A, 13A of the bumper 13 from painting, and the masking material 312 has an air inlet 13A, (of the bumper 13). A pair of left and right fitting portions 312A and 312A fitted to 13A) are formed, and fitting flanges 312B and 312B are formed at upper edges of the fitting portions 312A and 312A. The lower edge has a cross section The female bent portions 312C and 312C are formed, and the horizontal fitting portions 312D, 312D and the vertical fitting portions 312E and 312E are formed.

The masking material 312 is fitted to the air inlets 13A and 13A of the bumper 13 through fitting portions 312A and 312A, and the air inlets 13A and 13A The ribs 13D, 13D and the ribs 13C and 13C are formed by the rib fitting portions 312D, 312D and the longitudinal fitting portions 312E of the masking material 312. It is attached to the bumper 13 by fitting to 312E, respectively, but at this time, the fitting flanges of the upper edges of the fitting portions 312A and 312A of the masking material 312 as shown in FIG. 312B) and 312B are fitted into the grooves 13B and 13B of the upper edges of the air inlets 13A and 13A of the bumper 13, and the upper edge is pressed without using the adhesive tape. Further, the lower edges of the fitting portions 312A and 312A are reinforced by the bent portions 312C and 312C and are prevented from deformation so that the fitting action is easy. In this state, the surfaces of the bent portions 312C and 312C and the air inlets 13A and 13A of the bumper 13 are approximately the same as shown in FIG. 31. Since it is flat, the adhesive tape 312F can be easily stopped thereon.

The masking material 312 of this embodiment is made of the same engineering plastics as the masking material of the eleventh embodiment.

32 and 33 show a thirteenth embodiment of the present invention. The masking material 313 of this embodiment is used to protect the plurality of convex portions of the member. The masking material 313 is manufactured by vacuum forming the same two-layer sheet as in the fourth embodiment. It consists of a main body 313A and fitting parts 313B and 313B which protrude from the main body 313A.

The masking material 313 is coated onto the plurality of convex portions 21, which should not be subjected to the surface treatment of the member 1, through the fitting portions 313B and 313B, as shown in FIG. (21) to protect. The masking material 313 can be easily vacuum-formed and reused like the fourth embodiment.

34 to 36 show a fourteenth embodiment of the present invention. Reference numeral 14 denotes an oil filling port of a gasoline tank of an automobile, and an inner flange portion 14B formed around the hole portion 14A and the hole portion 14A and a packing groove 14D outside the inner flange portion 14B. It consists of the outer flange part 14C formed through, and the inner flange part 14B protrudes slightly more than the outer flange part 14C.

The masking material 314 protrudes from the surface of the central portion 314A and the outer peripheral portion 314C formed through the positioning groove 314B on the outer side of the disk-shaped central portion 314A and the central portion 314A. It is composed of a pressure-sensitive adhesive layer 314E provided on the back surface of the handle portion 314D and its outer peripheral portion 314C, and vacuum is made of engineering plastics in which polyamide is mixed with PPE mixed with 30% by weight of calcium carbonate. It is manufactured by molding.

The masking material 314 is positioned by fitting the positioning groove 314B to the inner flange portion 14B of the oil inlet 14, as shown in FIG. 35, and adheres to the back surface of the outer peripheral portion 314C. The layer 314E is attached to the oil inlet 14 by adhering to the outer surface of the outer flange portion 14C. In addition, the coating material is prevented from infiltrating into the gasoline tank from the oil filling port 14 during painting.

Since no part protrudes from the outer peripheral portion 314C on the back surface of the masking material 314, an adhesive is applied to the back surface of the outer peripheral portion 314C with a roll coater 5 or the like as shown in FIG. Thus, the adhesive layer 314E can be formed.

37 to 40 show a fifteenth embodiment of the present invention. The masking material 315 has a main body 315A in which the fitting portion 315B of the columnar main body 15A of the columnar body 15 is formed inside, and both side walls 315C of the main body 315A, ( It consists of flange fitting parts 315D and 315D which fit the flange 15D, 15D of the columnar body 15 formed along the lower edge of 315C, and are reinforced around the main body 315A. Ribs 315E are formed and manufactured similarly using the materials of the fourteenth embodiment.

The masking material 315 is attached to a pillar 15 which is a columnar body, and the pillar 15 is constituted by an outer panel 15A and an inner panel 15B, which are columnar bodies, and has a columnar body ( 15A) and flanges 15D and 15D formed along the lower edges of both side walls 15C and 15C of the columnar body 15A.

As shown in FIG. 38, the masking material 315 first fits the pillar-shaped main body 15A of the filler 15 to the main body fitting portion 315B of the masking material 315, and the filler ( The flanges 15D and 15D of the 15 are fitted to the pillars 15 by fitting the flange fitting portions 315D and 315D of the masking material 315.

In this manner, the masking material 315 is attached to the filler 15, and then the surface treatment such as painting or plating is performed. After the surface treatment, the masking material 315 is peeled from the filler 15.

The masking material 315 may be manufactured by, for example, forming a thermoplastic sheet by vacuum molding or press molding, and masking the plurality of masking materials 315 connected to each other through the connecting portion 315F as shown in FIG. The reconnecting material 315G is produced, the masking material connecting material 315G is cut out from the connecting part 315F by the cutting jig 6, and the state shown in FIG. 40 is shown, and the dotted line of FIG. The points are cut with a cutter or scissors. In this way, the above-mentioned masking material 315 is obtained.

41 and 42 show a sixteenth embodiment of the present invention. The masking material 316 of this embodiment has a main body 316A having a fitting portion 316B of the columnar body 15A of the columnar body 15 formed therein, and both side walls 316C of the body 316A. It consists of the projection 316F provided in the inner side of the lower side wall 316E formed through the edge part 316H along the lower edge of 316C, and the flange fitting part 316D on the upper side of the projection 316F, ( 316D) is formed, and a reinforcing rib 316G is formed around the main body 316A, and manufactured by vacuum molding using an engineering plastic made of polystyrene mixed with PPE mixed with 30% by weight of calcium carbonate. do.

As shown in FIG. 42, the masking material 316 fits the pillar-shaped main body 15A of the filler 15 to the main body fitting part 316B of the masking material 316, and the filler 15 Is fitted to the filler 15 by fitting the flanges 15D and 15D to the flange fitting portions 316D and 316D of the masking material 316.

43 to 46 show a seventeenth embodiment of the present invention. The masking material 317 shown in FIG. 43 is the main body 317A in which the fitting part 317B of the columnar main body 15A of the columnar body 15 was formed inside, and both side walls of the main body 317A. Flange fitting portions 317D, 317D and the flange fitting portion for fitting the flanges 15D, 15D of the columnar body 15 formed along the lower edges of the 317C and 317C. It consists of the back contact part 317E and 317E provided in succession from 317D and 317D, and the upper contact part 317F provided in series, and the reinforcement rib 317G is formed around the main body 317A. And the same production using the material of the sixteenth embodiment.

The masking material 317 is fitted with the columnar body 15A of the filler 15 shown in FIG. 44 similarly to the fourteenth embodiment to the main body fitting portion 317B of the masking material 317. The flanges 15D and 15D of the filler 15 are fitted to the flange fitting portions 317D and 317D of the masking material 317 to be temporarily fixed.

After the temporary fixing described above, as shown in FIG. 45, the back contact portions 317E and 317E of the masking material 317 are folded back to face the back surface of the filler 15, and the back contact portion ( The polymerized portions of 317E and 317E are fixed with an adhesive tape 317H or a tacker.

Thus, as shown in FIG. 46, the masking material 317 is affixed to the filler 15, and surface treatment, such as painting and plating, is performed. Since the filler 15 is protected to the back surface by the back contact part 317E, 317E of the masking material 317, surface treatment does not penetrate into the back surface. After the surface treatment, the adhesive tape 317H is peeled off and the masking material 317 is peeled off from the filler 15.

Claims (1)

Methylpentene copolymer (TPX), polysulfone (PSF), polyethersulfone (PES), polyphenylene sulfide (PPS), polyphenylene ether (PPE), polyamideimide (PAI), polyetherimide (PEI) And one or two or more thermoplastic resins selected from the group consisting of one or two or more phases selected from the group consisting of polyether-etherketone (PEEK), and the engineering plastics and polypropylene, polystyrene, and polyamides; A masking material, characterized in that it is molded into a predetermined shape by vacuum molding using a polymer alloy as a material.