JPH0341224B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of masking a vehicle body. More specifically, the present invention relates to a method of masking a portion where a bolt or the like is to be attached from the opposite side of the portion where a vinyl chloride resin sol for undercoat is applied.

[Prior Art] Conventionally, a vinyl chloride resin sol for undercoating has been applied to the underside of a car body for the purpose of providing rust prevention, chipping resistance, and soundproofing. In that case, it is necessary to mask the bolt holes etc. in advance to prevent the undercoat vinyl chloride resin sol from scattering to other parts of the differential. At that time, the conventional method has been to use an FRP molding jig, iron plate jig, paper pattern, pattern tape, etc. as a masking material, and to remove the masking material after applying a vinyl chloride resin sol for undercoat.

[Problems to be Solved by the Invention] However, the method requires a step of removing the masking material, which increases the number of man-hours.
Also, there is a problem that a portion 5 (see FIG. 2) where the vinyl chloride resin sol for undercoating is not applied is formed.

In view of the above points, an object of the present invention is to provide a masking method that does not require removing the masking material after applying a vinyl chloride resin sol for undercoating and can eliminate uncoated areas.

[Means for Solving the Problems] The masking method when applying the vinyl chloride resin sol for undercoating of the present invention is to apply a plastisol of vinyl chloride resin as the main resin component to a car body in which holes for mounting parts are formed. In a masking method performed when applying a vinyl chloride resin sol for undercoating, a tape material made of a vinyl chloride resin of the same type as the vinyl chloride resin, which is the main resin component of the vinyl chloride resin sol for undercoating, is used as a masking material. After covering the holes for mounting the parts with the tape, apply the undercoat vinyl chloride resin sol to the car body, and when baking the undercoat vinyl chloride resin sol, the tape material will not peel off from the car body. It is characterized by being cured integrally with the applied vinyl chloride resin sol for undercoat.

[Example] Next, the masking method of the present invention will be explained based on the drawings.

1a to 1c are explanatory views showing the masking method of the present invention.

In FIGS. 1a to 1c, 1 is a tape used in the masking method of the present invention, 2 is a vinyl chloride resin sol for undercoat whose main resin component is plastisol of vinyl chloride resin, 3 is a bolt hole, and 4 is an undercoat. Vinyl chloride resin sol 2
This is the car body that is coated with.

The tape 1 is made of the same type of vinyl chloride resin as the vinyl chloride resin that is the main resin component of the undercoat vinyl chloride resin sol 2 so that it is integrally cured with the undercoat vinyl chloride resin sol 2 during baking. ing.

Masking is performed as follows. That is, as shown in FIG. 1a, tape 1 is first
The undercoating vinyl chloride resin sol 2 is applied onto the vehicle body 4 so as to cover the bolt hole 3 to be masked. Next, the first
As shown in Figure b, baking is performed to harden the applied vinyl chloride resin sol 2 for undercoating. In that case, tape 1 is the masking material.
There is no need to remove it. Since the tape 1 is made of vinyl chloride resin which is the main resin component of the vinyl chloride resin sol 2 for undercoating, it is cured integrally with the vinyl chloride resin sol 2 for undercoating.
As is clear from FIG. 1b, according to the masking method of the present invention, there is no uncoated area with the vinyl chloride resin sol for undercoating, which could not be avoided with the conventional masking method. After curing is completed, a bolt is attached from the opposite side of the undercoat vinyl chloride resin sol application area, as shown in FIG. 1c. In this case, as a result of masking with the tape 1, the vinyl chloride resin sol for undercoat does not enter the bolt hole 3, so there is no problem in attaching the bolt.

[Effects] As explained above, the present invention uses a tape that can be cured integrally with the vinyl chloride resin sol for undercoat as a masking material when baking the vinyl chloride resin sol for undercoat, so it is easy to control the application of the vinyl chloride resin sol for undercoat. There is no need to remove the masking material at the same time, and costs can be reduced by reducing man-hours. Furthermore, since there are no unapplied areas of the undercoat vinyl chloride resin sol on the vehicle body due to masking, a reliable rust prevention effect can be obtained.

[Brief explanation of the drawing]

FIGS. 1a to 1c are explanatory views showing the masking method of the present invention, and FIG. 2 is an explanatory view showing uncoated areas caused by the conventional masking method. (Brief explanation of the drawings), 1: Tape, 2: Vinyl chloride resin sol for undercoat.

Claims (1)

[Claims] 1. In the masking method used when applying a vinyl chloride resin sol for undercoat, which has vinyl chloride resin plastisol as the main resin component, to a vehicle body with holes for mounting parts, the undercoat resin sol is used as a masking material. A tape material made of the same kind of vinyl chloride resin as the main resin component of the vinyl chloride resin sol is used, and after covering the holes for attaching the parts with the tape material, the vinyl chloride resin sol for undercoat is applied. A chloride for undercoat which is applied to a car body, and when the vinyl chloride resin sol for undercoat is baked, the tape material is cured integrally with the applied vinyl chloride resin sol for undercoat without peeling from the car body. Masking method when applying vinyl resin sol.