JPH09285750A - Masking material for coating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the penetration of a surface treating agent into a fitting part of a part to be protected by mounting a cushion sheet on all of the fitting part of the part to be protected or a prescribed place. SOLUTION: A columnar main body 11A of a pillar 11 is fitted to a fitting part 12B of a masking material 12, and flanges 11C and 11C of the pillar 11 are fitted to flange fitting parts 12D and 12D and temporarily fixed. At this time, a cushion sheet 12I as a cushion material of the masking material 12 is press-fixed to an outer periphery of the pillar 11, and also the cushion sheet 12I is press-fixed to an outer surface of both sides of an edge of the pillar 11 to secure the fixed temporary fixing. Lining parts 12E and 12E of the masking material 12 are bent and abutted to a back surface 11B of the pillar 11, and a lapping part of the lining parts 12E and 12E is stuck with an adhesive tape 13, etc. Then, after mounting the masking material 12 to the pillar 11, a surface treatment such as coating are applied. A coating material does not infiltrate to the back surface because the pillar 11 is protected with the lining parts 12E and 12E of the masking material 12 till the back surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to prevent a surface treatment such as coating from reaching a predetermined portion of a member.

[0002]

2. Description of the Related Art For example, when a vehicle body of an automobile is painted in two colors, when a paint of one color is applied, a portion where the paint of another color is applied is protected by a masking material. Conventionally, FIG.
As shown in FIG. 2, for example, in order to protect the pillars of an automobile, a masking material (2) consisting of a main body (2A) having a pillar fitting portion (2B) formed on the inside is provided (actual flat 6-57454).
issue).

[0003]

However, when the conventional masking material (2) is used, as shown in FIG. 11, the masking material (2) is inserted through the gap S between the pillar (1) and the masking material (2). ), The paint has entered the pillar fitting part (2B),
There are problems that (1) is not completely protected from coating and that the mounting position of the masking material (2) on the pillar (1) is easily displaced.

[0004]

As a means for solving the above-mentioned problems of the prior art, the present invention provides a protected part fitting portion inside.
(12B) formed body (12A) and the protected part fitting part (1
2B) To provide a masking material (12) for painting in which a cushion sheet (12I) is attached to the whole or a predetermined place to prevent the surface treatment from entering the protected portion fitting portion (12B).

Examples of the material of the masking material used in the present invention include polyamide (PA) and polyester (P
E), 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 (P
AI), polyimide (PI), polyetherimide (P
EI), polyamino bismaleimide, methylpentene copolymer (TPX), thermoplastic type such as cellulose acetate (CA), liquid crystal type such as polyallyl ether,
There are compression molding types such as fluororesins such as polytetrafluoroethylene (PTFE), amorphous polymers, polyamino bismaleimide, bismaleimide-triazine type thermosetting aromatic polyimide, and the like, but the above engineering plastics and other thermoplastics The polymer alloy of is a more preferable material for the present invention.
Such polymer alloys include 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 (A
BS) polymer alloy, nylon-PPO polymer alloy, POM-thermoplastic polyurethane polymer alloy, P
BT-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 alloys, nylon-PTFE polymer alloys and the like, and the above polymer alloys may be used alone or in combination of two or more, or may be a foam. Furthermore, for example, polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyvinyl acetate, fluororesin, thermoplastic acrylic resin, thermoplastic polyester, thermoplastic polyamide , A thermoplastic urethane resin, an acrylonitrile-butadiene copolymer, a styrene-butadiene copolymer, an acrylonitrile-butadiene-styrene copolymer, the above-mentioned thermoplastics, or a foam of the above-mentioned thermoplastics is also used. Furthermore, examples of the material of the masking material include acrylic rubber, butyl rubber, silicon rubber, urethane rubber, fluoride rubber, polysulfide rubber, graft rubber, butadiene rubber, isoprene rubber, chloroprene rubber, polyisobutylene rubber, polybutene. 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) copolymer, styrene-isoprene-styrene (SIS) Styrene-based thermoplastic elastomers such as copolymers, styrene-hydrogenated polyolefin-styrene (SEBS) copolymers, butadiene-styrene block copolymers, block copolymers such as styrene-rubber intermediate blocks-styrene copolymers, etc. Synthetic rubber and natural rubber,
Rosin, petroleum resin, coumarone resin, phenolic resin,
Examples include natural or synthetic resins such as alkylphenol-based resins and terpene-based resins, non-woven fabrics, fiber knitted fabrics, and felts. Two or more kinds of the above-mentioned engineering plastics, polymer alloys, thermoplastics or rubbers, and elastomers may be mixed or laminated. The masking material is formed by subjecting the engineering plastic, polymer alloy, and thermoplastic plastic sheets to vacuum forming, press forming, or the like. The above examples do not limit the invention.

Furthermore, examples of the material of the masking material include 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, carbon fiber, calcium silicate, bentonite, white carbon, carbon black, iron powder, aluminum powder, stone powder, blast furnace slag, fly ash, cement,
Inorganic fillers such as zirconia powder, cotton, hemp, natural fibers such as 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 fiber, carbon fiber, ceramic fiber, metal fiber, inorganic fiber such as whiskers, linters, linen, sisal, wood powder, coconut powder, walnut powder, starch, organic fillers such as wheat flour, etc. Retention, dimensional stability, compression and tensile strength may be improved. The filler is usually added in an amount of about 0.5 to 200% by weight based on the plastic material of the masking material. Further, it may be colored by coloring with a pigment or a dye for identifying the masking site, and further, a plasticizer such as DOP or DBP, an antioxidant, an antistatic agent, a crystallization accelerator, a flame retardant,
Flameproofing agents, insecticides, preservatives, waxes, lubricants, antioxidants, ultraviolet absorbers, chemical foaming agents or foaming agents such as capsule foaming agents may be added. These components may be added alone or in combination of two or more.

[0007]

1 to 5 show one embodiment of the present invention. The masking material (12) shown in FIG. 1 is a body in which a fitting portion (12B) of a columnar body (11A) of a columnar body (11) is formed inside.
(12A) and the flange fitting part (12D) for fitting the flange (11C, 11C) of the columnar body (11) formed along the lower edges of both side walls (12C, 12C) of the body (12A). , 12D) and the flange fitting part
It consists of a backing part (12E, 12E) extended from (12D, 12D) and an upper part (12F) extended to the upper part, and a reinforcing lateral rib (12G) around the main body (12A). And reinforcing vertical ribs (12H) are formed, and cushion sheets (12I, 12J) are bonded inside the reinforcing horizontal ribs (12G) at both ends and inside both ends of the upper pad (12F) as shown in Fig. 2. It is attached by the agent. In the case of the cushion sheet (12I), the cushion sheet (12I) is slightly protruded to the outside while being fitted in the inner groove of the reinforcing lateral rib (12G).

The material of the cushion sheet (12I, 12J) is, for example, plastic foam such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyurethane, polyester fiber, polyethylene fiber, polypropylene fiber, polyamide fiber, acrylic fiber, urethane. Non-woven fabric of synthetic or natural fiber such as fiber, polyvinyl chloride fiber, polyvinylidene chloride fiber, acetate fiber, pulp, cotton, wool, and palm fiber, felt, fiber knitted fabric, acrylic rubber, butyl rubber, silicon rubber, urethane rubber , Fluoride rubber, polysulfide rubber, silicone rubber, graft rubber, butadiene rubber, isoprene rubber, chloroprene rubber, polyisobutylene rubber, polybutene rubber, isobutene-isoprene rubber, acrylate-butadiene rubber, styrene -Butadiene rubber, acrylonitrile-butadiene rubber, styrene-isoprene rubber, acrylonitrile-chloroprene rubber, styrene-
Rubber such as chloroprene rubber and natural rubber, styrene-styrene-butadiene-styrene (SBS) copolymer, styrene-isoprene-styrene (SIS) copolymer, styrene-hydrogenated polyolefin-styrene (SEBS) copolymer, etc. Thermoplastic elastomer, butadiene-styrene block copolymer, styrene-rubber intermediate block-
A rubber such as a block copolymer such as a styrene copolymer, an elastomer, or the like is used.

As shown in FIG. 3, the masking material (12) is formed by fitting a pillar-shaped main body (11A) of a pillar (11), which is a pillar-shaped body, into a body fitting portion (12B) of the masking material (12). The flanges (11C, 11C) of the pillar (11) are fitted to the flange fitting portions (12D, 12D) of the masking material (12) to temporarily fix them. At this time, the cushion sheet (12I) of the masking material (12) is pressure-bonded to the outer periphery of the pillar (11), and the cushion sheet (12J) is attached to the pillar.
(11) Press on the outside of the window frame (11D) on both sides of the root end to secure the temporary fixing. Since the cushion sheet (12I) is fitted in the inner groove of the reinforcing lateral rib (12G) as described above, the cushion sheet (12I) is prevented from being displaced by the inner groove of the reinforcing lateral rib (12G). And the cushion sheet (12
Even if (I) is pressed by the outer circumference of the pillar (11) and compressed, the cushion seat (12I) is prevented from being deformed in the width direction by the inner groove of the reinforcing lateral rib (12G), so that the cushion seat (12I) is compressed. The reaction force effectively acts on the outer periphery of the pillar (11), and the cushion sheet (12I) is strongly pressed against the outer periphery of the pillar (11). After the temporary fixing, the backing portions (12E, 12E) of the masking material (12) are folded back as shown in FIG.
It is applied to the back surface (11B) of 1), and the overlapped portion of the back contact portion (12E, 12E) is fixed by an adhesive tape (13) or a tacker.

Thus, as shown in FIG. 5, the pillar (1
After attaching the masking material (12) to 1), apply surface treatment such as painting. The pillar (11) is a backing part (1) of the masking material (12).
2E, 12E) protects the back side (11B),
The paint does not get around the back surface (11B). Further, the cushion sheet (12I) inside both ends of the main body (12A) of the masking material (12) and the cushion sheet (12J) inside both ends of the upper contact part (12F) are the pillar (11) outer periphery and the pillar (11). Paint adheres to the window frame (11D) on both sides of the root end
(12B) is also prevented from entering. After the surface treatment, the adhesive tape (13) is peeled off and the masking material (12) is pillared (11).
Peel off from.

Other than this embodiment, the upper pad portion (12F) of the masking material (12) may be omitted, and the masking material (1)
A lower pad portion similar to the upper pad portion (12F) may be provided at the bottom of the body (12A) of 2).

6 and 7 show another embodiment of the present invention. The masking material (22) of this example is a cylindrical body (22A) having a protected part fitting portion (22B) formed therein, and a concave ring groove (22A) formed at the tip of the cylindrical body (22A). 22C),
The cylindrical body (22A) Double-sided adhesive tape (22D) inside the tip
The cushioning sheet (22E) attached to the masking material (22) is a round bar or a tubular protected portion.
(21) is fitted to the masking material (22) as shown in FIG.
The cushion sheet (22E) of is crimped to the outer periphery of the protected part (21).

8 and 9 show another embodiment of the present invention. In the masking material (32) of this specific example, a flange fitting portion (32B) is provided on the peripheral edge of the disc-shaped main body (32A), and a knob (32C) is formed at the central portion. A cushion sheet (32D) is fitted to the joint portion (32B), and the masking material (32) is, for example, the flange fitting portion (31A) at the periphery of the fuel filler port (31) of a gasoline tank of an automobile. 32B) by fitting the filler port (31)
In this state, as shown in FIG. 9, the cushion sheet (32D) of the masking material (32) is pressure-bonded to the upper edge of the flange (31A) of the oil supply port (31).

The masking material of the present invention can be applied to a portion other than the covered portion of the above specific example. Further, for example, when the cushion sheet is a soft polyurethane foam, the soft polyurethane foam raw material may be applied to a predetermined portion of the masking material and heat-foamed and cured.

[0015]

According to the present invention, therefore, the masking material can be very easily attached to and detached from the protected portion of the member, and it is possible to prevent the masking material from being displaced from the mounting position. It is extremely useful for mass production processes such as the automobile industry and the electronics industry.

[Brief description of drawings]

 1 to 5 show a specific example of the present invention.

FIG. 1 is a perspective view

[Figure 2] Side cutaway side view

FIG. 3 is a sectional view showing a temporarily fixed state.

[Fig. 4] Cross-sectional view of the mounting state

FIG. 5 is a front view of a mounting state. FIGS. 6 and 7 show another specific example of the present invention.

FIG. 6 is a perspective view.

FIG. 7 is a sectional view showing still another embodiment of the present invention.

FIG. 8 is a perspective view.

FIG. 9 is a sectional view

FIG. 10 is a perspective view of a conventional example.

FIG. 11 is a partial perspective view of a conventional state of use.

[Explanation of symbols]

 11 Pillar (protected part) 21 Protected part (protected part) 31 Oil inlet (protected part) 12,22,32 Masking material 12A, 22A, 32A Main body 12B, 22B, 23B Mating part 12I, 12J, 22E , 32D cushion seat

Claims (1)

[Claims] 1. A main body having a protected portion fitting portion formed inside, and a cushion sheet mounted on the entire protected portion fitting portion or at a predetermined position to invade surface treatment into the protected portion fitting portion. Masking material for painting characterized by preventing