JPH07228845A - Surface-covering material - Google Patents

Abstract

PURPOSE:To provide the subject covering material capable of being surely fixed, capable of being repeatedly used even when the covering material is exposed to a high temperature, and useful as a masking material, etc., by forming an adhesive layer on the main body of the surface-covering material and subsequently thermally treating the adhesive layer. CONSTITUTION:This covering material is produced by forming an adhesive layer 3 on a part or all parts of the surface of a surface-covering material main body 2 comprising an engineering plastic as a main material and subsequently thermally treating the layer 3 in the temperature range of 60-200 deg.C, when or after the layer 3 is formed. The main material is preferably a plastic such as a polyphenylene oxide, a polycarbonate, a polyester or a polyamide, or its polymer alloy with one or more of other thermoplastic resins.

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 subjecting an article to surface treatment such as painting or plating, and a surface coating material such as a packaging material used for transporting and storing an article.

[0002]

2. Description of the Related Art When a surface of an article is not to be subjected to surface treatment such as painting or plating, it is protected by a masking material during the surface treatment before painting. Also, when transporting or storing the article, the article is covered with a wrapping material so as not to damage the surface. Such surface coatings are usually attached to a given surface of the article by an adhesive layer. Conventionally, a material made of polystyrene foam has been used as such a surface coating material (for example, JP-A-62-289276), but the polystyrene foam is poor in heat resistance and solvent resistance and should be used repeatedly. Since it is impossible, as a surface coating material for improving this, there is provided a material which is made of a polyolefin mixed with an inorganic filler (Japanese Patent Laid-Open No. 2-126966 or Japanese Patent Laid-Open No. 5-126966).
-7807) The above polyolefin is excellent in solvent resistance and also excellent in heat resistance up to 150 ° C by mixing an inorganic filler.

[0003]

However, even a surface coating material made of a polyolefin mixed with the above-mentioned inorganic filler cannot be said to have sufficient heat resistance when it exceeds 150 ° C., and particularly, vacuum forming. In the case where the surface coating material is produced by stretch molding such as blow molding or press molding, residual stress exists inside the surface coating material, and the surface coating material is dried at a temperature of 150 ° C. or a curing step after coating.
When the above high temperature is applied, the residual stress is likely to cause shrinkage deformation of the surface coating material, and the adhesive layer is partially crosslinked to lose the adhesiveness, or the adhesive layer is attached to the surface of the article. The seizure did not occur, which made it virtually impossible to use the surface coating material repeatedly.

[0004]

As a means for solving the above-mentioned conventional problems, the present invention is directed to a main body of a surface coating material containing an engineering plastic or a polymer alloy of the engineering plastic and another thermoplastic as a main material. A pressure-sensitive adhesive layer is formed on a part or all of the surface, and the pressure-sensitive adhesive layer has 60 to 60% during or after formation of the pressure-sensitive adhesive layer.
Provided is a surface coating material which is heat-treated in a temperature range of 200 ° C., and the engineering plastic used for the polymer alloy is one or more selected from the group consisting of polyphenylene oxide, polycarbonate, polyester and polyamide. A coating material is provided.

In the present invention, the engineering plastic used as the main material of the surface coating material is
Polyamide (PA), polyester (PE), polyacetal (POM), polycarbonate (PC), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polysulfone (PSF), polyether sulfone (PES), polyphenylene oxide (PPO) , Polyphenylene sulfide (PPS), polyarylate (PAR), polyetheretherketone (PEEK), polyamideimide (PAI), polyimide (PI), polyetherimide (PEI), polyaminobismaleimide, methylpentene copolymer (TP)
X), 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 polymer, polyamino bismaleimide, bismaleimide-triazine Although there are thermosetting aromatic polyimides and the like, polymer alloys of the above engineering plastics and other thermoplastics are preferable materials for the present invention. Such polymer alloys include PPO-high impact polystyrene polymer alloy, PPO-polyamide polymer alloy,
PE-High Impact Polystyrene Polymer Alloy, P
E-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, P
BT-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-PTF
E polymer alloy, PAR-PTFE polymer alloy,
Nylon-PTFE polymer alloy and the like, and two or more kinds of the above polymer alloys may be mixed and used, or may be a foam.

For the above engineering plastics, if desired, for 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, bentonite, white carbon, carbon black, iron powder, aluminum powder,
Inorganic fillers such as stone powder, blast furnace slag, fly ash, cement, zirconia 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 and other organic synthetic fibers, asbestos fibers, glass fibers, carbon fibers, ceramic fibers, metal fibers, inorganic fibers such as whiskers, Linters, linens, sisal, wood flour, coconut flour, walnut flour, starch, reinforcing agents such as organic fillers such as wheat flour may be added to improve shape retention, dimensional stability, compression and tensile strength, etc. In addition, flame retardant,
Antioxidants, ultraviolet absorbers, antistatic agents, crystallization accelerators, foaming agents, coloring agents such as dyes and pigments, plasticizers such as DOP and DBP may be added.

Further, the above engineering plastics include, for example, polyethylene, polypropylene, ethylene-
Propylene copolymer, ethylene-vinyl acetate copolymer,
Polyolefin resin such as ethylene-vinyl chloride copolymer, or vinyl chloride resin, vinylidene chloride resin, styrene resin, acrylic resin, methacrylate resin, vinyl propionate resin, vinyl acetate-maleic acid resin, chloride Thermoplastics such as vinyl-vinyl acetate-based resins, polyvinyl ether-based resins, polyester-based resins, polyamide-based resins, etc., or foams or polyurethane foams of the above-mentioned thermoplastics, acrylic rubber, butyl rubber, silicon rubber, urethane rubber, fluorides Rubber, polysulfide rubber, graft rubber, butadiene rubber, isoprene rubber, chloroprene rubber, polyisobutylene rubber, polybutene rubber, isobutene-isoprene rubber, acrylate-butadiene rubber, styrene-butadiene rubber, acrylo Tolyl - Butadiene Rubber, pyridine - butadiene rubbers, styrene - isoprene rubber, acrylonitrile - chloroprene rubber, styrene - chloroprene rubber, styrene - butadiene - styrene (SB
S) copolymer, styrene-isoprene-styrene (SI
S) copolymers, styrene-based thermoplastic elastomers such as styrene-hydrogenated polyolefin-styrene (SEBS) copolymers and butadiene-styrene block copolymers,
Styrene-rubber intermediate block-synthetic rubber or natural rubber such as block copolymers such as styrene copolymer, rosin, petroleum resin, coumarone resin, phenol resin, alkylphenol resin, natural or synthetic resin such as terpene resin, One kind or two or more kinds of non-woven fabric, fiber knitted fabric, felt and the like may be mixed or laminated.

An adhesive layer is formed on a 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 to the surface of the main body and drying it, or by applying a so-called double-sided pressure-sensitive adhesive tape having a pressure-sensitive adhesive layer on both sides to a predetermined portion of the surface of the main body. It 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, emulsion, or latex. Examples of the 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 and graft rubber, acrylic resin, methacrylic resin, vinyl acetate resin, vinyl propionate resin, ethylene-vinyl acetate copolymer resin, vinyl acetate-maleic acid copolymer resin, Examples thereof include styrene resin, vinyl chloride resin, vinyl chloride-ethylene copolymer resin, vinyl chloride-vinyl acetate copolymer resin, vinylidene chloride resin, polyvinyl ether resin and the like. Two or more kinds of the above rubbers or synthetic resins may be mixed. Further, a plasticizer or softener such as DBP, DOP, TCP, terpene dimer may be added to the rubber or synthetic resin. Furthermore, the tackifier of the present invention includes a tackifier such as rosin, petroleum resin, coumarone resin, rosin resin, terpene resin, phenol resin, alkylphenol resin, calcium carbonate,
Talc, gypsum, etc. may be added.

Further, the pressure-sensitive adhesive of the present invention improves the cohesive force of the pressure-sensitive adhesive, improves the releasability of the surface coating material from the member to which it is attached, and appropriately controls the softening at high temperature. Therefore, it is desirable to add a water-soluble polymer. It is advantageous to add such a water-soluble polymer to the emulsion or latex of the pressure-sensitive adhesive. Examples of the water-soluble polymer include glue, gelatin, casein, starch, modified starch, starch derivative, dextrin, gum arabic, sodium alginate, polyvinyl alcohol, carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose, sodium polyacrylate, Sodium polymethacrylate, polyacrylamide, polymethacrylamide,
Polyvinyl methyl ether, vinyl acetate-maleic acid copolymer, styrene-maleic acid copolymer, isobutylene-maleic acid copolymer, polyvinylpyrrolidone, partially saponified polyacrylic acid ester, partially saponified polymethacrylic acid ester, etc. Alternatively, a mixture of two or more kinds can be used. 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%. If the amount of the water-soluble polymer added exceeds 20%, the tackiness tends to decrease,
In a pressure-sensitive adhesive having sufficient tackiness, the tackiness may not decrease even if the amount of the water-soluble polymer added exceeds 20%, and the above numerical values do not limit the present invention. If the amount of the water-soluble polymer added is less than 0.05%, the effect of preventing the adhesive layer from remaining on the member will decrease. The water-soluble polymer is usually added later to the emulsion or latex of the pressure-sensitive adhesive, but it may be added to the aqueous phase in advance during the production of the pressure-sensitive adhesive emulsion or latex (emulsion polymerization or emulsification of resin). . The water-soluble polymer is added in the form of a solid such as powder or an aqueous solution, or a solution such as an organic solvent solution. When heat treatment is carried out in the temperature range of 60 to 200 ° C. for 0.5 to 30 minutes after the pressure-sensitive adhesive is applied, the adhesive force between the pressure-sensitive adhesive layer and the surface of the surface-coating material body is increased, and the pressure-sensitive adhesive layer is hardly peeled from the surface-coating material body.

A part or the whole of the surface of the surface coating material body may be subjected to a treatment such as a corona discharge treatment or a primer treatment so as to increase the affinity for the paint or the adhesive. 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 primer such as acrylic synthetic resin, vinyl synthetic resin, amino synthetic resin or epoxy resin containing amino group, amide group, etc., or aluminum Aluminum alkoxides or aluminum chelate compounds such as isopropylate and aluminum trisacetylacetonate, 2-ethylhexyl lead, alkyl metals 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 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 Metal thioalcoholate, thiodicarboxylate such as zinc 2-ethylhexanedithioate, nickel dimethyldithiocarbamate, metal dithiocarbamate such as copper dimethyldithiocarbamate, metal sulfonate such as nickel benzenesulfonate, dibutyrate There are primers low molecular weight such as organic phosphoric acid metal salts such as vanadium phosphate, the primer is used as one or a mixture of two or more. The primer is a synthetic resin or rubber having good adhesion to both a paint vehicle of an engineering plastic used as the surface coating material body or a synthetic resin other than the engineering plastic generally used as an adhesive, or the above-mentioned various primers. Is used. Particularly desirable as the primer is an acrylic synthetic resin or an amino synthetic resin containing a quaternary ammonium salt. In order to apply a primer treatment using one or a mixture of two or more of the above various primers, a solution or emulsion (latex) of one or a mixture of two or more of the above various primers is applied to the surface of the surface coating material. And dry. Prior to the primer treatment, the surface of the surface covering material body may be subjected to an affinity treatment. Examples of the affinity treatment applied to the engineering plastic surface include flame treatment and sulfuric acid treatment for slightly carbonizing the surface to give affinity, and corona discharge treatment for roughening and slightly carbonizing the surface.

[0011]

The operation of the present invention is as follows. Engineering plastics as the main material of the main body of the surface coating material of the present invention, particularly desirable is a polymer alloy of polyphenylene oxide and / or polyester and high-impact polystyrene and / or polyamide, the engineering plastic having excellent heat resistance,
Moreover, since the heat treatment is performed in the temperature range of 60 to 200 ° C. during or after the formation of the adhesive layer, the internal residual stress generated during the body forming step is relaxed by the heat treatment.
No deformation or destruction occurs even if the heat treatment at 0 ° C. or more is repeated a plurality of times. Further, the main body has good adhesiveness to the paint, and even if the main body breaks, there is no fear that the paint pieces will fall off from the coating film formed on the main body. Further, the heat treatment makes the adhesion between the main body and the adhesive layer extremely good, and there is no risk that the adhesive layer will migrate and remain on the surface of the member when the surface coating material is removed from the member after the high temperature heat treatment.

[0012]

1 to 3, there is shown 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 composed of PPO and high-impact polystyrene, is manufactured by vacuum molding, and protects the automobile bumper (5). The main body (2) of the masking material (1) is formed with a fitting portion (2A) which fits into the air intake (5A) of the bumper (5), and the lower edge of the fitting portion (2A) is formed. Has a U-shaped cross-section flange (2B) and lateral ribs (2C, 2
D), vertical ribs (2E, 2F) are formed, and further the main body (2)
Adhesive layers (3, 4) are formed on the inner side of the upper edge and the lower surface of the flange (2B). The pressure-sensitive adhesive layer (3, 4) is formed by applying an acrylic resin emulsion pressure-sensitive adhesive having a solid content of 50% and containing 10% of polyvinyl alcohol, and heating at 120 ° C. and drying. The masking material (1) is attached to the bumper (5) by fitting it into the air intake (5A) of the bumper (5) via the fitting part (2A). The fitting portion (2A) of the body (2) of () is reinforced by the flange (2B) and deformation is prevented, so that the fitting operation is easy. In this state, the upper edge and the lower edge of the masking material (1) are fixed to the bumper (5) side by the adhesive layers (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 penetrate into the air intake port (5A) of the bumper (5). After coating, curing is carried out at 120 ° C. for 40 minutes, but since the masking material (1) is covered and reinforced by the coating film (6) of the coating as shown in FIG. 3, deformation also occurs during curing. Absent. After coating, the masking material (1) is removed from the bumper (5), but since the adhesive layers (3, 4) of the masking material (1) are strongly adhered to the main body (2) by the heat treatment, There is no risk of transfer to the bumper (5) side when removing. Since the masking material (1) is covered with a cured coating film, it has excellent heat resistance and can withstand repeated use of 10 times or more.

A second embodiment of the present invention is shown in FIGS. The body (12) of the masking material (11) of this embodiment is PPO.
-Bumper made of polyamide polymer alloy (15)
Is to protect. That is, the bumper (15) is provided with a pair of left and right air intakes (15A, 15A), and inside the air intakes (15A, 15A) are vertical rails (15C, 15C) and horizontal rails (1C).
5D, 15D) are provided, and a groove (15B, 15B) is formed on the upper edge of the air intake (15A, 15A) as shown in FIG. 5, and a step (15E) is formed on the lower edge. , 15E) has been formed. 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) has air in the bumper (15). Intake
A pair of left and right fitting parts (12A, 12A) that fit with (15A, 15A) are formed, and a fitting flange (1
2B, 12B) is formed and the bent portion with a U-shaped cross section is formed at the lower edge.
(12C, 12C) is formed, and the horizontal crosspiece fitting part (12D, 12D) and the vertical crosspiece fitting part (12E, 12E) are formed.
(12) Inside of the upper edge mating flange (12B, 12B) and lower edge bent part
Adhesive layers (13, 14) are formed on the lower surface of (12C, 12C).
The pressure-sensitive adhesive layers (13, 14) are formed by applying a butyl rubber organic solvent solution pressure-sensitive adhesive having a solid content of 30%, heating to 80 ° C. and drying. The masking material (11) is attached to the air intake (15A, 15A) of the bumper (15) at the fitting part (12
(A, 12A), and the horizontal rails (15D, 15D) and vertical rails (15C, 15C) of the air intake (15A, 15A) are connected to the masking material (1
Horizontal beam fitting part (12D, 12D) and vertical beam fitting part of body (12) of 1)
It is attached to the bumper (15) by fitting with (12E, 12E) respectively. At this time, as shown in FIG. 6, the fitting portion (12A, 12A) of the body (12) of the masking material (11) is attached. Install the mating flanges (12B, 12B) on the upper edge of the bumper (15) to the air intake (15A, 15B).
(A) Fit the groove (15B, 15B) on the upper edge and fix the adhesive layer (13) to the bumper (15), and the lower edge of the fitting part (12A, 12A) is the bent part (12C, 12C). The fitting work is easy because it is reinforced by and is prevented from being deformed. Then, in this state, the bumper is inserted through the adhesive layer (14) on the lower surface of the bent portion (12C, 12C).
Fix to (15). In this way the masking material (11)
After mounting on the bumper (15), a masking material (11) for the car body with a thermosetting melamine-alkyd resin coating
Paint with. The bumper (15) is the masking material (11)
Protected by and unpainted, the bumper (1
Paint does not enter into the air intake (15A, 15A) of 5). After coating, curing is performed at 120 ° C. for 40 minutes. Since the masking material (11) is covered and reinforced by the coating film (16) of the coating as shown in FIG. 7, deformation occurs during curing. Absent. After painting, apply the masking material (11) to the bumper.
Removed from (15), the adhesive layer (13,
Since 14) adheres strongly to the main body 12 due to the above heat treatment, there is no risk of transfer to the bumper 15 side during removal. Further, since the masking material (11) is covered with the cured coating film (16), it has excellent heat resistance and can be used repeatedly 10 times or more.

A third embodiment of the present invention is shown in FIGS. (25) is an oil filling port of an automobile gasoline tank, and includes a hole portion (25A), an inner flange portion (25B) formed around the hole portion (25A), and an outer side of the inner flange portion (25B). And an outer flange portion (25C) formed through a packing groove (25D), and the inner flange portion (25B) slightly projects from the outer flange portion (25C). The body (22) of the masking material (21) has a disc-shaped central portion (22A) and an outer peripheral portion (22C) formed outside the disc-shaped central portion (22A) via a positioning groove (22B). , A knob (22D) protruding from the surface of the central portion (22A), an adhesive layer (23) is formed on the back surface of the outer peripheral portion (22C), and the main body (22) is made of talc 30.
20% organic solvent solution adhesive of styrene-butadiene copolymer prepared by vacuum molding using PE-high impact polystyrene polymer alloy, which is a mixture of 5% by weight of carbon fiber and 5% by weight of carbon fiber. Apply 9
It is formed by heating and drying at 0 ° C. The masking material (21)
Is the inner flange (25B) of the oil inlet (25) as shown in Fig. 9.
Positioning is performed by fitting the positioning groove (22B) to the outer peripheral portion (22C) and the adhesive layer (23) on the back surface is adhered to the outer surface of the outer flange portion (25C) to make the lubricating port.
Mounted on (25). When painting, the paint is filled with oil (25)
Prevent from entering into the gasoline tank. On the back surface of the body (22) of the masking material (21), an outer peripheral portion (22C)
Since there is no protruding portion, the adhesive layer (23) can be formed by applying an adhesive to the back surface of the outer peripheral portion (22C) with a roll coater (26) or the like as shown in FIG. After the masking material (21) is attached to the oil filling port (25) in this way, the oil filling port (25) is coated with polyvinyl chloride paint. The lubrication port (25) is protected by the masking material (21) and is not coated, and the hole portion (25A) of the lubrication port (25)
The paint does not enter inside. After painting the masking material (21)
Is removed from the oil inlet (25), but the adhesive layer (23) of the masking material (21) is composed of a styrene-butadiene block copolymer having a large cohesive force, so transfer to the oil inlet (25) side. There is no.

11 to 15 show a fourth embodiment of the present invention. The body (32) of the masking material (31) has a columnar body inside
(35) Columnar body (35A) Fitting part (32B) Frame body (3
2A) and a flange fitting part (32D) for fitting the flanges (35D, 35D) of the columnar body (35) formed along the lower edges of both side walls (32C, 32C) of the frame body (32A). , 32D) and frame (32A)
Reinforcing ribs (32E) are formed around the main body (32), 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 adhered. A layer (33) is formed, the body (32) being a third
It is manufactured in the same manner as in the example. The adhesive layer 33 is formed in the same manner as in the first embodiment. Masking material (3
1) is an automobile (36) which is, for example, a columnar body as shown in FIG.
As shown in FIG. 13, the center pillar (35) is composed of an outer panel (35A) and an inner panel (35B) which are columnar main bodies, and the center pillars (35) are It is composed of flanges (35D, 35D) formed along the lower edges of 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 part (32B) of the body (32) of the masking material (31), and the flange of the center pillar (35).
(35D, 35D) is attached to the center pillar (35) by fitting it to the flange fitting part (32D, 32D) of the body (32) of the masking material (31) and fixing it with an adhesive layer (33). To be
After the masking material (31) is attached in this manner, it is coated with a thermosetting benzoguanamine-alkyd resin coating. The center pillar (35) is protected by the masking material (31) and is not painted. 180 after painting
Cure at 40 ° C for 40 minutes, using the masking material (3
In 1), a polymer alloy composed of PE and polyamide is used as a material, so that no deformation occurs during curing. After painting, remove the masking material (31) from the pillar (35),
The adhesive layer (33) of the masking material (31) is the center pillar (3
It does not transfer to the 5) side. Body (32) of the masking material (31)
For manufacturing, for example, a thermoplastic sheet is formed by vacuum forming or press forming, and as shown in FIG. 14, a main body (32) of a large number of masking materials (31) via a connecting portion (32F).
We made a masking material main body connected object (32G) in which
The masking material connected product (32G) is cut off from the connecting portion (32F) by the cutting jig (34) to obtain the state shown in FIG.
Cut off the dotted line with a cutter or scissors. In this way, the main body (32) of the masking material (31) is obtained.

A fifth embodiment of the present invention is shown in FIGS. Body (42) of the masking material (41) of the present embodiment
Is a frame body (42A) in which the fitting portion (42B) of the columnar body (35A) of the columnar body (35) is formed, and both side walls (42C, 42C) of the frame body (42A).
C) Lower side wall formed along the lower edge via a step (42H)
(42E) is formed with a protrusion (42F) provided inside, and a flange fitting portion (42D, 42D) that is fitted to the upper side of the protrusion (42F) is formed, and the frame (42A) is also formed. Reinforcing ribs (4
2G) is formed and manufactured by press molding using the same material as the first embodiment. And the frame body (4) of the main body (42)
An adhesive layer (43) is formed on the inner side of 2A) as in the second embodiment. The masking material (41) is the outer panel (35A) of the automobile center pillar (35) as shown in FIG.
Is fitted to the fitting portion (42B) of the body (42) of the masking material (41), and the flanges (35D, 35D) of the center pillar (35) are fitted to the body (42) of the masking material (41). Flange fitting (42D, 42D)
It is attached to the center pillar (35) by fitting it to and fixing it by the adhesive layer (43). After attaching the masking material (41) in this manner, a thermosetting melamine-
Paint with 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 since the main body (42) of the masking material (41) is made of PPO and high impact polystyrene polymer alloy, no deformation occurs during curing. After painting, remove the masking material (41) from the center pillar (35),
The adhesive layer (43) of the masking material (41) is the center pillar (3
It does not transfer to the 5) side.

18 to 21 show a sixth embodiment of the present invention. The main body (52) of the masking material (51) of the present embodiment is a frame body (52A) in which a fitting portion (52B) of the columnar main body (35A) of the columnar body (35) is formed, and the frame body (52A). ) Flanges (35D, 3D) formed along the lower edges of both side walls (52C, 52C) of the columnar body (35)
5D) flange fitting parts (52D, 52D) and backing parts (52E, 52E) extended from the flange fitting parts (52D, 52D)
And the upper pad (52F) extended to the top,
A reinforcing rib (52G) is formed around (52A). The masking material (51) is PP mixed with 30% by weight of glass powder.
It is manufactured by vacuum forming using an O-polyamide polymer alloy as a material. An adhesive layer (53) is formed inside the frame body (52A) of the main body (52) in the same manner as in the third embodiment. The masking material (51) is the same as in the fourth embodiment shown in FIG.
The pillar body (3) of the center pillar (35) of the automobile is
5A) is fitted to the fitting portion (52B) of the body (52) of the masking material (51), and the flanges (35D, 35D) of the center pillar (35) are fitted to the body (52) of the masking material (51). ) Flange fitting (52D, 5
2D) is fitted and fixed by the adhesive layer (53) and temporarily fixed. After the temporary fixing, as shown in FIG. 20, the backing parts (52E, 52E) of the main body (52) of the masking material (51) are folded back and applied to the back surface of the center pillar (35), and the backing part ( (52E, 52E)
Secure the polymerized part of the tape with an adhesive tape (54) or a tacker.
After the masking material (51) is thus attached to the center pillar (35) as shown in FIG. 21, it is coated with a thermosetting melamine-alkyd resin paint. The center pillar (35) is a backing part (5) of the body (52) of the masking material (51).
The back side is protected by 2E, 52E), so the paint does not get around the back side. After coating, cure at 180 ° C for 40 minutes. The main body (5) of the masking material (51)
Since 2) uses a PPO-polyamide polymer alloy mixed with 5% by weight of SBS as a material, it does not deform even during curing. After coating, 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.

22 and 23 show a seventh embodiment of the present invention. The masking material (61) of the present embodiment comprises a frame-shaped main body (62) and an adhesive layer (63) formed on the back surface of the main body (62), and the main body (62) is made of polyamide-imide. ,
An adhesive layer (63) is formed in the same manner as in the first embodiment. As shown in FIG. 23, the masking material (61) is attached to the periphery of the rear window (65) of the automobile (66) via an adhesive layer (63). Thereafter, the body of the automobile (66) is painted with a thermosetting benzoguanamine-acrylic resin paint. 180 ° C after painting.
Curing is performed for 40 minutes, and then the masking material (6
1) Remove. The masking material (61) can be reused because it does not deform even by heating during curing, and the adhesive layer (63) does not transfer to the vehicle body side.

An eighth embodiment of the present invention is shown in FIGS. 24 and 25. The masking material (71) of this embodiment comprises a step-shaped body (72) and an adhesive layer (7) formed on the back surface of the body (72).
3) and the main body (72) is made of polyphenylene sulfide as a material, and the adhesive layer (73) is formed in the same manner as in the second embodiment. As shown in FIG. 25, the masking material (71) is attached to the step (75) of the automobile (76) through the adhesive layer (73) to protect the step (75) from painting. After the coating, the masking material (71) is removed from the step (75), but the masking material (71) is not deformed by the curing at the time of coating, and the adhesive layer (73) is in the step (75). Does not transfer.

[0020]

According to the present invention, therefore, the surface coating material can be reliably fixed and can be repeatedly used even when the surface coating material is exposed to high temperatures.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment before mounting a masking material.

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

FIG. 3 is a cross-sectional view of a masking material whose surface is coated with a coating film according to the first embodiment.

FIG. 4 is a perspective view of the second embodiment before mounting the masking material.

5 is a sectional view taken along line AA in FIG. 4 before attaching a masking material according to a second embodiment.

FIG. 6 is a cross-sectional view taken along the line AA in the masking attached state of the second embodiment.

FIG. 7 is a cross-sectional view of a masking material having a surface coated with a coating film according to a second embodiment.

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

FIG. 9 is a partial cross-sectional view of an oil filler port in a masking state according to a third embodiment.

FIG. 10 is an explanatory diagram of adhesive application of 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 of a masking attachment state of the fourth embodiment.

FIG. 14 is a front view of the masking material joint according to the fourth embodiment.

FIG. 15 is a front view of a masking material connected product according to a fourth embodiment in a separated state.

FIG. 16 is a perspective view of a fifth embodiment.

FIG. 17 is a sectional view of the fifth embodiment in a mounted state.

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 showing a mounting state of the sixth embodiment.

FIG. 21 is a front view of the mounting state of the sixth embodiment.

FIG. 22 is a perspective view of a masking material of the seventh embodiment.

FIG. 23 is a perspective view of the masking material mounting portion of the seventh embodiment.

FIG. 24 is a perspective view of a masking material according to an eighth embodiment.

FIG. 25 is a perspective view of the masking material mounting portion of the eighth embodiment.

[Explanation of symbols]

 1,11,21,31,41,51,61,71 Masking material 2,12,22,32,42,52,62,72 Main body 3,4,13,14,23,33,43,53,63 , 73 Adhesive layer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B32B 27/00 M 8413-4F

Claims (3)

[Claims] 1. A pressure-sensitive adhesive layer is formed on a part or all of the surface of a main body of a surface coating material, which is mainly composed of engineering plastic, and the pressure-sensitive adhesive layer is formed during or after the formation of the pressure-sensitive adhesive layer.
Surface coating material characterized by being heat-treated in a temperature range of 0 to 200 ° C. 2. An adhesive layer is formed on a part or all of the surface of a surface coating material main body mainly composed of a polymer alloy of engineering plastics and other thermoplastics, and the adhesive layer is formed when the adhesive layer is formed. Or 60 to after formation
Surface coating material characterized by being heat-treated in a temperature range of 200 ° C 3. The engineering plastic is one or more engineering plastics selected from the group consisting of polyphenylene oxide, polycarbonate, polyester and polyamide.
Surface coating material described in