JP3675495B2 - Surface coating material - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a masking material used when a surface treatment such as painting or plating is applied to an article, and a surface covering material such as a packaging material used when transporting and storing the article.
[0002]
[Prior art]
In the case where there is a portion that should not be subjected to surface treatment such as painting or plating on the surface of the article, the surface is protected with a masking material during the surface treatment. When transporting or storing the article, the article surface is covered with a packaging material so that the article surface is not damaged. Such a surface covering is usually attached to a predetermined surface of an article by an adhesive layer.
Conventionally, a material made of polystyrene foam has been used as such a surface coating material (for example, Japanese Patent Application Laid-Open No. Sho 62-289276), but the polystyrene foam is poor in heat resistance and solvent resistance and can be used repeatedly. Since this is impossible, a material using a polyolefin mixed with an inorganic filler as a surface coating material for improving this is provided (Japanese Patent Laid-Open No. 2-126966 or Japanese Patent Laid-Open No. 5-7807).
The polyolefin is excellent in solvent resistance, and is excellent in heat resistance up to 150 ° C. by mixing an inorganic filler.
[0003]
[Problems to be solved by the invention]
However, even in the surface coating material made of polyolefin mixed with the above inorganic filler, if it exceeds 150 ° C., it cannot be said that the heat resistance is sufficient, especially in vacuum molding, blow molding, press molding, etc. When a surface coating material is produced by stretch molding, there is residual stress inside the surface coating material, and when the surface coating material is subjected to a high temperature of 150 ° C. or more in a drying process or a curing process after painting. The surface coating material tends to shrink and deform due to the residual stress, and the adhesive layer partially cross-links to lose the adhesive property, or the adhesive layer does not stick to the article surface. For this reason, repeated use of the surface coating material has been virtually impossible.
[0004]
[Means for Solving the Problems]
The present invention is a means for solving the above conventional problems.DMainly made of polymer alloy of engineering ring plastic and other thermoplasticsManufactured by stretch moldingAn adhesive layer is formed on part or all of the surface of the surface covering material body, and the adhesive layer provides a surface covering material that is heat-treated at a temperature range of 60 to 200 ° C. during or after the formation of the adhesive layer. The engineering plastic used for the polymer alloy provides a surface coating material that is one or more selected from the group consisting of polyphenylene oxide, polycarbonate, polyester, and polyamide.
[0005]
In the present invention, surface coatingFor materialEngineering plasticAs a polymer alloy with other thermoplastics,Polyamide (PA), polyester (PE), polyacetal (POM), polycarbonate (PC), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polysulfone (PSF), polyethersulfone (PES), polyphenylene oxide (PPO) , Polyphenylene sulfide (PPS), polyarylate (PAR), polyetheretherketone (PEEK), polyamideimide (PARI), polyimide (PI), polyetherimide (PEI), polyaminobismaleimide, methylpentene copolymer (TPX), Thermoplastic type such as cellulose acetate (CA), liquid crystal type such as polyallyl ether, compression molding type such as fluororesin such as polytetrafluoroethylene (PTFE), amorphous Rimmer, polyaminobismaleimide, bismaleimide - triazine thermosetting aromatic engineering plus nitride such as polyimideAnd othersPolymer alloys with other thermoplasticsFor example, PPO-high impact polystyrene polymer alloy, PPO-polyamide polymer alloy, PE-high impact polystyrene polymer alloy, PE-polyamide polymer alloy, nylon-modified polyolefin polymer alloy, nylon-acrylonitrile / styrene / butadiene copolymer (ABS) polymer alloy , Nylon-PPO polymer alloy, POM-thermoplastic polyurethane polymer alloy, PBT-acrylic rubber polymer alloy, PBT-ABS polymer alloy, PBT-polyester ether elastomer polymer alloy, PBT-PET polymer alloy, PBT-PC polymer alloy, PPO- PTFE polymer alloy, PBT-PTFE polymer alloy, PET-PTFE polymer alloy, PET-PAR polymer alloy , PC-PTFE polymer alloy, PAR-PTFE polymer alloy, a nylon -PTFE polymer alloy or the like, the polymer alloy may be may be mixed using two or more addition foam.
[0006]
Above engineering plasticAnd other thermoplastics polymer alloysFor example, calcium carbonate, magnesium carbonate, barium sulfate, calcium sulfate, calcium sulfite, calcium phosphate, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, magnesium oxide, titanium oxide, iron oxide, zinc oxide, alumina, Silica, diatomaceous earth, dolomite, gypsum, talc, clay, asbestos, mica, glass fiber, calcium silicate, bennite, white carbon, carbon black, iron powder, aluminum powder, stone powder, blast furnace slag, fly ash, cement, zirconia Inorganic fillers such as powder, natural fibers such as cotton, hemp and wool, polyamide fibers, polyester fibers, acrylic fibers, viscose fibers, acetate fibers, vinyl chloride fibers, vinylidene chloride fibers, etc., asbestos fibers, glass fiber, Shape retention by adding reinforcing materials such as inorganic fibers such as elementary fibers, ceramic fibers, metal fibers, whiskers, linter, linen, sisal, wood flour, palm flour, walnut flour, starch, wheat flour, etc. Dimensional stability, compression and tensile strength may be improved, and flame retardants, antioxidants, UV absorbers, antistatic agents, crystallization accelerators, foaming agents, colorants such as dyes and pigments, DOP A plasticizer such as DBP may be added.
[0007]
Furthermore, the above engineering plasticsAnd other thermoplastics polymer alloysFor example, polyolefin resin such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl chloride copolymer, vinyl chloride resin, vinylidene chloride resin, styrene resin, Thermoplastics such as acrylic resin, methacrylate resin, vinyl propionate resin, vinyl acetate-maleic acid resin, vinyl chloride-vinyl acetate resin, polyvinyl ether resin, polyester resin, polyamide resin or the above heat Plastic plastic foam and polyurethane foam, acrylic rubber, butyl rubber, silicon rubber, urethane rubber, fluoride rubber, polysulfide rubber, graft rubber, butadiene rubber, isoprene rubber, chloroprene rubber, polyisobutylene rubber, polybutyl rubber Rubber, isobutene-isoprene rubber, acrylate-butadiene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, pyridine-butadiene rubber, styrene-isoprene rubber, acrylonitrile-chloroprene rubber, styrene-chloroprene rubber, styrene-butadiene-styrene (SBS) Styrenic thermoplastic elastomers such as copolymers, styrene-isoprene-styrene (SIS) copolymers, styrene-hydrogenated polyolefin-styrene (SEBS) copolymers, butadiene-styrene block copolymers, styrene-rubber intermediate blocks -Natural rubber such as block rubber such as styrene copolymer, natural rubber, rosin, petroleum resin, coumarone resin, phenol resin, alkylphenol resin, terpene resin, etc. Other synthetic resins, non-woven, fiber knitted fabrics, one or more kinds may be mixed or laminated in such felt.
[0008]
An adhesive layer is formed on part or all of the surface of the main body of the surface treatment material. The pressure-sensitive adhesive layer is usually formed by applying a pressure-sensitive adhesive on the surface of the main body and drying it, or by sticking a so-called double-sided pressure-sensitive adhesive tape having a pressure-sensitive adhesive layer on both sides to a predetermined position on the surface of the main body. The The pressure-sensitive adhesive used for forming the pressure-sensitive adhesive layer is a pressure-sensitive pressure-sensitive adhesive and is usually provided in the form of water or an organic solvent solution, an emulsion, or a latex.
Examples of the pressure-sensitive adhesive include natural rubber, styrene-butadiene rubber, styrene-butadiene block copolymer, styrene-isoprene block copolymer, acrylonitrile-butadiene rubber, isoprene rubber, chloroprene rubber, butyl rubber, polyisobutylene rubber, polybutene. Natural rubber or synthetic rubber such as rubber, graft rubber, acrylic resin, methacrylic resin, vinyl acetate resin, vinyl propionate resin, ethylene-vinyl acetate copolymer resin, vinyl acetate-maleic acid copolymer resin, Styrenic resins, vinyl chloride resins, vinyl chloride-ethylene copolymer resins, vinyl chloride-vinyl acetate copolymer resins, vinylidene chloride resins, polyvinyl ether resins, and the like. Two or more rubbers or synthetic resins may be mixed.
Furthermore, plasticizers or softeners such as DBP, DOP, TCP, and terpene dimer may be added to the rubber or synthetic resin.
Furthermore, rosin, petroleum resin, coumarone resin, rosin resin, terpene resin, phenol resin, alkylphenol resin and other tackifiers, calcium carbonate, talc, gypsum, etc. may be added to the adhesive of the present invention. Good.
[0009]
In addition, the pressure-sensitive adhesive of the present invention is improved in the cohesive force of the pressure-sensitive adhesive, improves the releasability of the surface coating material from the attached member, and is water-soluble to moderately control the softening at high temperatures. It is desirable to add a functional polymer. Such a water-soluble polymer is usually advantageously added to an adhesive emulsion or latex.
Examples of the water-soluble polymer include glue, gelatin, casein, starch, modified starch, starch derivatives, dextrin, gum arabic, sodium alginate, polyvinyl alcohol, carboxymethylcellulose, methylcellulose, hydroxyethylcellulose, polyacrylic acid soda, Polymethacrylic acid soda, polyacrylamide, polymethacrylamide, polyvinyl methyl ether, vinyl acetate-maleic acid copolymer, styrene-maleic acid copolymer, isobutylene-maleic acid copolymer, polyvinylpyrrolidone, polyacrylic ester partial saponification Or a mixture of two or more of polymethacrylic acid ester partially saponified products.
The amount of the water-soluble polymer added to the pressure-sensitive adhesive is usually 0.05 to 20% by weight (hereinafter simply referred to as%), preferably 0.1 to 10%. When the amount of the water-soluble polymer added exceeds 20%, the tackiness tends to decrease. However, in the case of a pressure-sensitive adhesive having sufficient tackiness, even when the amount of the water-soluble polymer added exceeds 20%, the tackiness is reduced. May not decrease, and the above numerical values do not limit the present invention. On the other hand, when the amount of the water-soluble polymer added is 0.05% or less, the effect of preventing the adhesive layer from remaining on the member decreases. The water-soluble polymer is usually added later to the adhesive emulsion or latex, but may be added to the aqueous phase in advance during the production of the adhesive emulsion or latex (emulsion polymerization or emulsification of resin, etc.). . The water-soluble polymer is added in the form of a solid such as a powder or a solution such as an aqueous solution or an organic solvent solution.
When heat treatment is usually carried out in the temperature range of 60 to 200 ° C. for 0.5 to 30 minutes after application of the pressure-sensitive adhesive, the adhesive force between the pressure-sensitive adhesive layer and the surface covering material main body surface increases, and the pressure-sensitive adhesive layer becomes difficult to peel off from the surface covering material main body.
[0010]
A part or all of the surface of the surface covering material main body may be subjected to a treatment such as a corona discharge treatment or a primer treatment to enhance the affinity for a paint or an adhesive. Primers used in the above primer treatment include chlorinated polypropylene, modified polyolefin or olefin copolymer such as ethylene-vinyl acetate copolymer, styrene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber, and synthetic rubber such as polybutadiene. , Acrylic synthetic resins, vinyl synthetic resins, acrylic synthetic resins containing amino groups, amide groups, etc., vinyl synthetic resins, synthetic rubbers such as amino synthetic resins and epoxy resins, or primers of synthetic resins, or aluminum Aluminum alcoholates or aluminum chelate compounds such as isopropylate, aluminum trisacetylacetonate, alkyl metals such as 2-ethylhexyl lead, 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 acetylacetone lithium and acetylacetone beryllium, organotitanium compounds such as tetrabutyltitanate, triborate -Boric acid compounds such as n-butyl and triphenyl borate, phosphoric acid esters such as trioleyl phosphate and tridecyl phosphate, carboxylic acid metal salts such as magnesium stearate and cobalt naphthenate, and n-dodecyl mercapto potassium salt Thiodicarboxylates such as zinc 2-ethylhexanedithioate, dithiocarbamate metal salts such as nickel dimethyldithiocarbamate and copper dimethyldithiocarbamate, sulfonate metal salts such as nickel benzenesulfonate, dibuty 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. The primer is a synthetic resin or rubber having good adhesion to both a paint vehicle of an engineering plastic used as the main body of the surface coating material or a synthetic resin other than the engineering plastic generally used as an adhesive, or the above various primers. Is used. Particularly desirable as the primer is an acrylic synthetic resin or amino synthetic resin containing a quaternary ammonium salt.
In order to perform primer treatment using one kind or a mixture of two or more kinds of the above-mentioned various primers, a solution or emulsion (latex) of one kind or a mixture of two or more kinds of the above-mentioned various primers is applied to the surface of the surface coating material. And dry.
Prior to the primer treatment, an affinity treatment may be applied to the surface of the surface covering material body. Examples of the affinity treatment applied to the engineering plastic surface include a flame treatment for slightly carbonizing the surface to give affinity, a sulfuric acid treatment, and a corona discharge treatment for roughening and slightly carbonizing the surface.
[0011]
[Action]
The operation of the present invention is as follows.
Engineering plastic which is the main material of the surface coating material body of the present inventionAs a polymer alloy with other thermoplasticsParticularly desirable is a polymer alloy of polyphenylene oxide and / or polyester and high impact polystyrene and / or polyamide, the engineering plasticAnd other thermoplastics polymer alloysIs excellent in heat resistance, and heat treatment is performed in the temperature range of 60 to 200 ° C. during or after the formation of the adhesive layer. Deformation and destruction do not occur even if the heat treatment is repeated a plurality of times. Further, the main body has good adhesion to the paint, and even if the main body is cracked, there is no possibility that the paint piece will fall off from the coating film formed on the main body. Furthermore, the adhesion between the main body and the pressure-sensitive adhesive layer becomes very good by the heat treatment, and when the surface coating material is removed from the member after the high-temperature heat treatment, there is no possibility that the pressure-sensitive adhesive layer migrates to the member surface and remains.
[0012]
【Example】
1 to 3 show a first embodiment of the present invention. The main body (2) of the masking material (1) of this embodiment is made of a polymer alloy made of PPO and high impact polystyrene and is manufactured by vacuum forming to protect the bumper (5) of the automobile. The main body (2) of the masking material (1) has a fitting portion (2A) that fits into the air intake port (5A) of the bumper (5), and is formed at the lower edge of the fitting portion (2A). Is formed with a U-shaped flange (2B), horizontal ribs (2C, 2D) and vertical ribs (2E, 2F), and the inner side of the upper edge of the main body (2) and the flange (2 B) An adhesive layer (3,4) is formed on the lower surface. The adhesive layer (3,4) is formed by applying 50% solid acrylic resin emulsion adhesive containing 10% polyvinyl alcohol, heating to 120 ° C. and drying.
The masking material (1) is attached to the bumper (5) by being fitted to the air intake (5A) of the bumper (5) via the fitting portion (2A). The fitting portion (2A) of the main body (2) is reinforced by the flange (2B) and deformation is prevented, so that the fitting operation is easy. In this state, the upper and lower edges of the masking material (1) are fixed to the bumper (5) side by an adhesive layer (3,4).
After the masking material (1) is attached to the bumper (5) in this way, the automobile body is coated with the masking material (1) with a thermosetting melamine-acrylic resin paint. The bumper (5) is protected by the masking material (1) and is not painted, and the paint does not enter the air intake (5A) of the bumper (5). After coating, curing is performed at 120 ° C. for 40 minutes. The masking material (1) is covered and reinforced by the paint film (6) as shown in FIG. Absent.
After painting, the masking material (1) is removed from the bumper (5), but the adhesive layer (3,4) of the masking material (1) is in close contact with the main body (2) by the heat treatment. There is no risk of transfer to the bumper (5) when removing. Further, since the masking material (1) is coated with a cured coating film, it is extremely excellent in heat resistance and can endure repeated use 10 times or more.
[0013]
4 to 7 show a second embodiment of the present invention. The main body (12) of the masking material (11) of this embodiment is made of PPO-polyamide polymer alloy and protects the bumper (15). That is, the bumper (15) is provided with a pair of left and right air intakes (15A, 15A). Inside the air intake (15A, 15A), a vertical beam (15C, 15C) and a horizontal beam (15D) , 15D), and grooves (15B, 15B) are formed on the upper edge of the air intakes (15A, 15A) as shown in FIG. 5, and a step (15E, 15B) is formed on the lower edge. 15E) is formedHaveThe
The masking material (11) protects the air intakes (15A, 15A) of the bumper (15) from painting, and the body (12) of the masking material (11) is provided with the air of the bumper (15). A pair of left and right fitting parts (12A, 12A) that fits into the intake port (15A, 15A) is formed, and a fitting flange (12B, 12B) is formed on the upper edge of the fitting part (12A, 12A) The lower edge is formed with a U-shaped bent section (12C, 12C), and a horizontal beam fitting part (12D, 12D) and a vertical beam fitting part (12E, 12E) are formed. Furthermore, adhesive layers (13, 14) are formed on the inner side of the upper edge fitting flanges (12B, 12B) of the main body (12) and on the lower surface of the lower edge bent portions (12C, 12C). The adhesive layer (13, 14) is formed by applying a butyl rubber organic solvent solution adhesive having a solid content of 30%, heating to 80 ° C. and drying.
The masking material (11) is fitted to the air intake (15A, 15A) of the bumper (15) via the fitting portion (12A, 12A) of the main body (12), and the air intake (15A, 15A) The horizontal beam (15D, 15D) and the vertical beam (15C, 15C) of the masking material (11) of the main body (12) of the horizontal beam fitting part (12D, 12D) and the vertical beam fitting part (12E, 12E) are respectively attached to the bumper (15) by being fitted to each other. At this time, as shown in FIG. 6, the upper edge of the fitting portion (12A, 12A) of the main body (12) of the masking material (11) The fitting flange (12B, 12B) is fitted into the groove (15B, 15B) on the upper edge of the air intake port (15A, 15A) of the bumper (15) and the adhesive layer (13) is fixed to the bumper (15). Further, the lower edge of the fitting portion (12A, 12A) is reinforced by the bent portion (12C, 12C), and deformation is prevented, so that the fitting operation is easy. In this state, it is fixed to the bumper (15) via the adhesive layer (14) on the lower surface of the bent portion (12C, 12C).
After the masking material (11) is attached to the bumper (15) in this way, the automobile body is coated with the masking material (11) with a thermosetting melamine-alkyd resin paint. The bumper (15) is protected by the masking material (11) and is not painted, and the paint does not enter the air intakes (15A, 15A) of the bumper (15). After coating, curing is performed at 120 ° C. for 40 minutes, but the masking material (11) is covered and reinforced by the paint film (16) as shown in FIG. Absent.
After painting, the masking material (11) is removed from the bumper (15), but the adhesive layer (13, 14) of the masking material (11) is strongly adhered to the main body (12) by the heat treatment. There is no risk of transfer to the bumper (15) when removing. Further, since the masking material (11) is coated with the cured coating film (16), it is extremely excellent in heat resistance and can endure repeated use 10 times or more.
[0014]
8 to 10 show a third embodiment of the present invention. (25) is an oil filling port of a gasoline tank of an automobile, and includes a hole (25A), an inner flange (25B) formed around the hole (25A), and an outer side of the inner flange (25B). The outer flange portion (25C) is formed through a packing groove (25D), and the inner flange portion (25B) slightly protrudes from the outer flange portion (25C).
The main body (22) of the masking material (21) includes a disc-shaped central portion (22A) and an outer peripheral portion (22C) formed on the outer side of the disc-shaped central portion (22A) via a positioning groove (22B). The center portion (22A) and a knob (22D) protruding from the surface, and the outer peripheral portion (22C) is formed with an adhesive layer (23) on the back surface, and the main body (22) is 30% by weight of talc. It is manufactured by vacuum molding using PE-high impact polystyrene polymer alloy mixed with 5% by weight of carbon fiber and the adhesive layer (23) is coated with 20% organic solvent solution adhesive of styrene-butadiene copolymer. And formed by heating and drying at 90 ° C.
The masking material (21) is positioned by fitting the positioning groove (22B) to the inner flange portion (25B) of the oil filler port (25) as shown in FIG. 9, and the outer peripheral portion (22C) is adhered to the back surface. The layer (23) is attached to the lubrication port (25) by adhering it to the outer surface of the outer flange portion (25C). During painting, the paint is prevented from entering the gasoline tank from the oil filler (25).
On the back surface of the main body (22) of the masking material (21), there is no portion protruding beyond the outer peripheral portion (22C). Therefore, as shown in FIG. An adhesive layer can be formed by applying an adhesive.
After the masking material (21) is attached to the oil filling port (25) in this way, the oil filling port (25) is coated with a polyvinyl chloride paint. The oil inlet (25) is protected by the masking material (21) and is not painted, and the paint does not enter the hole (25A) of the oil inlet (25).
After painting, the masking material (21) is removed from the oil inlet (25). However, the adhesive layer (23) of the masking material (21) is made of a styrene-butadiene block copolymer having a high cohesive force. There is no metastasis to the mouth (25) side.
[0015]
11 to 15 show a fourth embodiment of the present invention. The main body (32) of the masking material (31) includes a frame (32A) in which a fitting portion (32B) of the columnar main body (35A) of the columnar body (35) is formed, and both sides of the frame (32A). A flange fitting portion (32D, 32D) that fits the flange (35D, 35D) of the columnar body (35) formed along the lower edge of the wall (32C, 32C), and the frame body (32A) Reinforcing ribs (32E) are formed around the body, and the main body (32) is made of a polymer alloy composed of PE and polyamide mixed with 15% by weight of calcium carbonate, and the inside of the frame (32A) is adhesive. A layer (33) is formed, and the body (32) is manufactured in the same manner as in the third embodiment. The adhesive layer (33) is formed in the same manner as in the first embodiment.
As shown in FIG. 12, the masking material (31) is attached to a center pillar (35) of an automobile (36) which is a columnar body, for example. As shown in FIG. 13, the center pillar (35) is a columnar body. A flange (35D, 35D) formed by a certain outer panel (35A) and an inner panel (35B) formed along the lower edges of the columnar body (35A) and both side walls (35C, 35C) of the columnar body (35A). )
The masking material (31) fits the outer panel (35A) of the center pillar (35) to the fitting portion (32B) of the main body (32) of the masking material (31), and the center pillar (35) The flange (35D, 35D) is fitted to the flange fitting portion (32D, 32D) of the main body (32) of the masking material (31) and fixed by the adhesive layer (33) to the center pillar (35). Mounted.
After the masking material (31) is attached in this manner, it is coated with a thermosetting benzoguanamine-alkyd resin paint. The center pillar (35) is protected by the masking material (31) and is not painted. After coating, curing is carried out at 180 ° C. for 40 minutes. Since the masking material (31) is made of a polymer alloy composed of PE and polyamide, there is no deformation in the curing. After painting, the masking material (31) is removed from the pillar (35), but the adhesive layer (33) of the masking material (31) does not transfer to the center pillar (35) side.
In order to manufacture the main body (32) of the masking material (31), for example, a thermoplastic sheet is formed by vacuum molding or press molding or the like, and a large number of masking materials (32F) are inserted through the connecting portions (32F) as shown in FIG. A masking material main body connection (32G) to which the main body (32) of (31) is connected is prepared, and the masking material connection (32G) is cut off from the connection portion (32F) by the cutting jig (34) to obtain FIG. In the state shown in FIG. 15, the dotted line in FIG. 15 is cut off with a cutter or scissors. In this way, the main body (32) of the masking material (31) is obtained.
[0016]
16 and 17 show a fifth embodiment of the present invention. The main body (42) of the masking material (41) of the present embodiment has a frame (42A) in which a fitting portion (42B) of the columnar main body (35A) of the columnar body (35) is formed, and the frame ( 42A) and a protrusion (42F) provided on the inner side of the lower wall (42E) formed along the lower edge of the both side walls (42C, 42C) via the stepped portion (42H). 42F) is formed with a flange fitting portion (42D, 42D) to be fitted on the upper side, and a reinforcing rib (42G) is formed around the frame (42A), and the same material as in the first embodiment. Is manufactured by press molding. An adhesive layer (43) is formed on the inner side of the frame (42A) of the main body (42) in the same manner as in the second embodiment.
As shown in FIG. 17, the masking material (41) fits the outer panel (35A) of the center pillar (35) of the automobile to the fitting portion (42B) of the main body (42) of the masking material (41). The flange (35D, 35D) of the center pillar (35) is fitted to the flange fitting portion (42D, 42D) of the main body (42) of the masking material (41) and fixed by the adhesive layer (43). Mounted on the center pillar (35).
After the masking material (41) is attached in this way, it is painted with a thermosetting melamine-acrylic resin paint. The center pillar (35) is protected by the masking material (41) and is not painted. After coating, curing is performed at 180 ° C. for 40 minutes, but the main body (42) of the masking material (41) is made of PPO and high-impact polystyrene polymer alloy, so that deformation does not occur in the curing. After painting, the masking material (41) is removed from the center pillar (35), but the adhesive layer (43) of the masking material (41) does not transfer to the center pillar (35) side.
[0017]
18 to 21 show a sixth embodiment of the present invention. The main body (52) of the masking material (51) of the present embodiment includes a frame (52A) in which a fitting portion (52B) of the columnar main body (35A) of the columnar body (35) is formed, and the frame (52A). ) Flange fitting portions (52D, 52D) for fitting the flanges (35D, 35D) of the columnar body (35) formed along the lower edges of the both side walls (52C, 52C), and the flange fitting Part (52D, 52D) and a backing part (52E, 52E) extended from the upper part (52F) extended from the upper part, around the frame (52A) there is a reinforcing rib ( 52G) is formed. The masking material (51) is manufactured by vacuum forming using a PPO-polyamide polymer alloy mixed with 30% by weight of glass powder. An adhesive layer (53) is formed on the inner side of the frame (52A) of the main body (52) as in the third embodiment.
As in the fourth embodiment, the masking material (51) has a columnar body (35A) of a center pillar (35) of an automobile as shown in FIG. 19 and a fitting portion (52) of the body (52) of the masking material (51). 52B), the flange (35D, 35D) of the center pillar (35) is fitted to the flange fitting portion (52D, 52D) of the main body (52) of the masking material (51), and the adhesive layer ( Secure it by 53) and fix it temporarily.
After the temporary fixing, as shown in FIG. 20, the backing portion (52E, 52E) of the main body (52) of the masking material (51) is folded and applied to the back surface of the center pillar (35), and the backing portion ( 52E, 52E) is fastened with adhesive tape (54) or tucker.
After the masking material (51) is attached to the center pillar (35) as shown in FIG. 21, it is coated with a thermosetting melamine-alkyd resin paint. Since the center pillar (35) is protected to the back surface by the backing portions (52E, 52E) of the main body (52) of the masking material (51), the paint does not go around the back surface. After coating, curing is performed at 180 ° C. for 40 minutes, but the main body (52) of the masking material (51) is made of PPO-polyamide polymer alloy mixed with 5% by weight of SBS, so there is no deformation in the curing. . After painting, the adhesive tape (54) is peeled off and the masking material (51) is peeled off from the center pillar (35). The adhesive layer (53) of the masking material (51) does not transfer to the center pillar (35) side.
[0018]
【The invention's effect】
Therefore, in the present invention, the surface covering material can be securely fixed and can be used repeatedly even when the surface covering material is exposed to high temperature. The
[Brief description of the drawings]
FIG. 1 is a perspective view of a first embodiment before mounting a masking material.
FIG. 2 is a sectional view showing a masking mounting state of the first embodiment.
FIG. 3 is a cross-sectional view of a masking material in which the surface of the first embodiment is coated with a coating film.
FIG. 4 is a perspective view before attaching a masking material of the second embodiment.
FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4 before attaching the masking material of the second embodiment.
FIG. 6 is a cross-sectional view taken along line AA in the masking mounting state of the second embodiment.
FIG. 7 is a cross-sectional view of a masking material in which the surface of the second embodiment is coated with a coating film.
FIG. 8 is a perspective view of a third embodiment.
FIG. 9 is a partial cross-sectional view of an oil filler opening in a masking state according to a third embodiment
FIG. 10 is an explanatory diagram of adhesive application in the third embodiment.
FIG. 11 is a perspective view of a fourth embodiment.
FIG. 12 is a side view of the masking attachment state of the fourth embodiment.
FIG. 13 is a sectional view showing a masking mounting state of the fourth embodiment.
FIG. 14 is a front view of a connected masking material according to a fourth embodiment.
FIG. 15 is a front view of the fourth embodiment of the masking material joint according to the present embodiment.
FIG. 16 is a perspective view of a fifth embodiment.
FIG. 17 is a sectional view of the mounting state of the fifth embodiment.
FIG. 18 is a perspective view of a sixth embodiment.
FIG. 19 is a sectional view of the sixth embodiment in a temporarily fixed state.
FIG. 20 is a sectional view of the sixth embodiment in a mounted state.
FIG. 21 is a front view of the mounting state of the sixth embodiment.
[Explanation of symbols]
1,11,21,31,41,51          Masking material
2,12,22,32,42,52          Body
3,4,13,14,23,33,43,53    Adhesive layer

Claims (2)

An adhesive layer is formed on a part or all of the surface of the surface covering material body produced by stretch molding using a polymer alloy of an engineering plastic and another thermoplastic as a main material. Or a surface coating material that is heat-treated in a temperature range of 60 to 200 ° C. after the formation. The surface coating material according to claim 2, wherein the engineering plastic is one or more engineering plastics selected from the group consisting of polyphenylene oxide, polycarbonate, polyester, and polyamide.

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