JPH0570666U - Masking material - Google Patents

Abstract

(57) [Summary] [Objective] The object of the present invention is to facilitate the attachment of the masking material. [Structure] A masking material divided into a plurality of units (11A) by forming folding grooves (11B) along the lateral direction on the upper surface and / or the lower surface of the main body having a U-shaped cross section.
Provide (11).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a masking material that temporarily protects a part of a surface to be treated during surface treatment such as painting and plating.

[0002]

[Prior Art]

 For example, polyvinyl chloride (PVC) sol is applied to the underside of automobiles to prevent rust and noise. There are parts such as drain holes and brackets on the floor of the automobile where PVC sol must be prevented from entering or adhering. Conventionally, therefore, as shown in FIG. 5, for example, a bracket (2) is covered with a masking material (1) made of polystyrene foam and having a U-shaped cross section before the PVC sol coating, and the bracket (2) is covered with PVC. A method of masking so that the sol does not adhere has been proposed (JP-A-62-289276).

[0003]

[Problems to be solved by the device]

 However, if there are more than 100 masking locations such as under the floor of an automobile, the task of picking up masking materials one by one from the masking material mounting base and mounting them at the prescribed locations is extremely laborious and time consuming. It was a thing.

[0004]

[Means for Solving the Problems]

 As a means for solving the above conventional problems, the present invention provides a plurality of folding grooves (11B) along the lateral direction on the upper surface and / or the lower surface of the main body having a U-shaped cross section. It provides a masking material (11) divided into units (11A).

[0005]

[Action]

 The masking material (11) of the present invention is composed of a plurality of units (11A) which are divided by folding grooves (11B). Then, the unit (11A) at the end of the masking material (11) is attached to the masking portion (2), and the unit (11A) is broken through the folding groove (11B).

[0006]

【Example】

 The present invention will be described with reference to an embodiment shown in FIGS. 1 and 2. The masking material (11) has a U-shaped cross section and is provided with an insertion groove (11C). Folding grooves (11B, 11B) are formed along the masking material (11) and the masking material (11) is divided into a plurality of units (11A) by the folding grooves (11B, 11B).

In the masking material (11), the endmost unit (11A) is attached to the bracket (2) on the floor of the automobile via the insertion groove (11C) as shown in FIG. 2, and the folding groove (11B) is attached. ) Fold off the unit (11A) from the point. The unit (11A) is broken off at the same time as it is attached to the bracket (2) or before it is attached.

In this way, the unit (11A) of the masking material (11) is attached to the bracket (2), and then PVC sol is painted on the floor of the automobile. Since the bracket (2) is masked by the unit (11A) of the masking material (11) as described above, adhesion of the PVC zone is prevented. After painting PVC sol, remove the unit (11A) from the bracket (2).

FIG. 3 shows another embodiment of the present invention. The masking material (21) of the present embodiment has a U-shaped cross section and is provided with an insertion groove (21C) .Folding grooves (21B, 21B) are formed on the upper surface and the lower surface along the lateral direction. Although the plurality of units (21A) are divided by the folding grooves (21B, 21B), a protrusion (21D) is formed on the upper side or the lower side of the masking material (21). The unit (21A) of the masking material (21) of the present embodiment is attached to the bracket or the like through the insertion groove (21C), but the protrusion (21D) guides the bracket or the like into the insertion groove (21C). To facilitate installation.

FIG. 4 shows still another embodiment of the present invention. The masking material (31) of the present embodiment has a U-shaped cross section and an insertion groove (31C) is formed, and folding grooves (31B, 31B) are formed on the upper surface and the lower surface along the lateral direction. A plurality of units (31A) are divided by the folding grooves (31B, 31B), but ribs (31D) are formed along the lateral direction on the upper and lower walls of the insertion groove (31C) of the masking material (31). Is provided. The unit (31A) of the masking material (31) of the present invention is attached to a bracket or the like through the insertion groove (31C), and the presence of the rib (31D) improves the attachment strength.

The masking material of the present invention is a thermoplastic sheet such as polystyrene, polyethylene, polypropylene, ethylene-propylene copolymer, polyvinyl chloride, vinylidene chloride copolymer, ethylene-vinyl acetate copolymer, or the like. Thermoplastic foam sheet, thermosetting plastic sheet of polyurethane, melamine resin, urea resin, phenol resin, epoxy resin or the like, or thermosetting plastic sheet, paper, cardboard, wood A plywood, a hardboard or the like is an impregnated sheet in which a binder such as polyurethane, melamine resin, urea resin or phenol resin is impregnated, or a molded product made of a laminate of two or more of the above materials.

The masking material of the present invention includes 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, stone powder, blast furnace slag , Inorganic fillers such as fly ashes, wood flour, coconut powder, walnut flour, starch, cotton fiber powder, fillers such as wheat flour, colorants such as dyes and pigments, plasticizers such as DOP and DBP, or the like. Two or more kinds may be mixed.

Among the above materials, the polystyrene foam is a desirable material in view of the ease of breaking. In the case of polystyrene foam, it is desirable that the density is about 10 to 100 g / l, and in this case, the depth of the folding groove is preferably about 5 to 80% of the thickness of the masking material. Further, the folding groove may be formed only on one side of the masking material.

[0014]

[Effect of the device]

 Therefore, in the present invention, the labor required for mounting the masking material is reduced, and the time required for mounting is greatly shortened.

[0015]

[Brief description of drawings]

 1 and 2 show an embodiment of the present invention.

1 is a perspective view

[Fig. 2] Illustration of mounting state

FIG. 3 is a partial perspective view of another embodiment.

FIG. 4 is a partial perspective view of still another embodiment.

FIG. 5 is an explanatory view of a conventional mounting state.

[Explanation of symbols]

 11,21,31 Masking material 11A, 21A, 31A Unit 11B, 21B, 31B Fold groove

Claims (1)

[Scope of utility model registration request] 1. A masking material characterized by being divided into a plurality of units by forming a folding groove along the lateral direction on the upper surface and / or the lower surface of a main body having a U-shaped cross section.