JPH08257491A - Two-tone color coating method - Google Patents

Abstract

PURPOSE: To remarkably reduce the total coating time by sticking a solid sticking stripe printed with the unicolor paint of a two-tone color on a substrate and then coating the substrate with a body color as another color paint of the two-tone color. CONSTITUTION: A solid sticking stripe 2 printed with a two-tone color printed part 5 and with a masking application tape 7 stuck to the upper face is stuck to the surface of a pretreated synthetic-resin substrate 1, a primer 8 is applied on the substrate 1 surface, and a body color 9 as another part of the two-tone color is applied on the primer 8. The tape 7 on the stripe 2 is released, a clear overcoat is applied on the stripe 2 and the entire surface of the body color 9 while the applied body color 9 is still wet, and the coated surface is finished, cured and dried. Consequently, the coating of the two-tone color part and the application of the clear overcoat are respectively omitted, and only one finish- drying is needed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-tone color coating method applied to a synthetic resin base material such as a motorcycle part by overcoat clear specification.

[0002]

2. Description of the Related Art Generally, as an accent on outer surfaces of components such as motorcycle side covers and fuel tanks,
Or, two-tone color coating is applied to enhance the design effect, and in order to further improve quality, reminding a high-class feeling, and to enhance the appearance, an overcoat clear coating is applied on the two-tone color coating. , Two-tone color coating with overcoat clear specifications is used.

By the way, the conventional two-tone color coating method according to the overcoat clear specification generally includes the following steps, which will be described with reference to FIGS.

FIG. 9 is a block diagram showing the steps of a conventional method,
9 to 13 are cross-sectional views of the coating section showing the order of the steps.

.. The pretreatment line is pretreated in the pretreatment line, the drained and dried synthetic resin base material 01 is transferred to a coating line, where it is cleaned, and then a primer (undercoat paint) 08 is applied to the surface of the base material 01 ( After the first painting)
Two-tone color part 05 on the entire surface of the primer 08
Is coated, and clear 012 is further coated on the upper surface thereof (second and third coatings), followed by curing and drying (first drying) (see FIG. 10).

[0006] Then the two-tone color part 05
A pin stripe 02 is attached to the upper part to form a parting line. The pin stripe 02 is formed by printing the pin stripe print portion 06 on the upper surface of the film 03 and applying the adhesive 04 on the lower surface thereof.
Is attached to the two-tone color portion 05 via the clear 012. A masking application tape 07, which is slightly wider than the width of the pin stripe 02, is attached to the upper surface of the pin stripe 02, and the masking paper 0 covering the two-tone color portion 05 is further applied thereon.
13 is attached. (See Figure 11).

[0007]. Then, after cleaning the coated surface, a body color 09, which is another portion of the two-tone color, is spray-coated (fourth coating) on the two-tone color portion 05 via the clear 012, and the masking application tape 07 and Peel off the masking paper 013. Thereafter, if necessary, curing and drying are performed (see FIG. 12).

[0008] Finally overcoat clear 0 on the entire surface
After 10 is coated (fifth coating), finish curing drying (third drying) is performed (see FIG. 13) and the product is discharged from the coating line.

Above. ~. Will complete the whole process of two-tone color coating with overcoat clear specifications.

[0010]

By the way, according to the above-mentioned conventional coating method, five coatings and at least two drying treatments are required, and the entire coating time becomes long, resulting in a large increase in production cost. In addition, since two two-tone colors are coated together, there is a problem in that the amount of VOC (volatile organic solvent) used increases and environmental hygiene is not preferable.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a novel two-tone color coating method capable of solving the above-mentioned problems.

[0012]

To achieve the above object, the present invention is characterized in that the two-tone color coating of the overcoat clear specification is applied on a synthetic resin substrate. On the surface of the synthetic resin base material after the treatment, the step of sticking the solid stripe with the masking application tape stuck on the upper surface, where the two-tone color printing part is printed, and the surface of the base material A step of applying a primer, a step of applying a body color which is the other part of the two-tone color on the primer, and a step of masking the solid applying stripe while the body color after the application is in a wet state. Overcoat clear is applied to the entire surface of the application tape peeling process and the solid stripe and body color. And that step is to include a step of drying finish the painted surface.

In order to achieve the above-mentioned object, the invention according to claim 2 is characterized in that the solid-adhesive stripe has a lower surface of the film coated with an adhesive having an adhesive force set for the base material. A two-tone color printed portion is printed on the upper surface thereof, and a pin stripe printed portion serving as a parting line is printed along the outer edge of the printed portion, and a masking application tape is attached on the printed surface.

[0014]

[Function] A solid sticking stripe having a two-tone color printed portion is adhered on a synthetic resin base material, and then a body color to be the other part of the two-tone color is applied on the base material. Peel off the masking application tape on the stripe, paint the overcoat clear, and finish cure and dry.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view of a motorcycle side cover which has been subjected to two-tone color painting by the method of the present invention, FIG. 2 is a block diagram showing steps by the method of the present invention, and FIGS. It is sectional drawing of a coating part which shows the order of the coating process of this invention.

In this embodiment, when the method of the present invention is applied to the side cover S for a motorcycle, as shown in FIG. 1, the side cover S, which is a synthetic resin part, has an overcoat clear specification. Two-tone color painting is applied.

Next, this coating method will be described in detail with reference to FIGS.

The outer surface of the hard synthetic resin substrate 1 constituting the side cover S is subjected to two-tone color coating according to the overcoat clear specification.

(1) First, in the pretreatment line, the synthetic resin substrate 1 is subjected to ordinary pretreatment, drained and dried, and then the substrate 1 is transferred from the pretreatment line to the coating line.

(2). In the coating line, the solid sticking stripes 2 are stuck on the surface of the base material 1 at appropriate places. This solid-adhesive stripe 2 has a base material adhesive 4 applied to the lower surface of a film 3, a two-tone color printed portion 5 is printed in the central portion of the upper surface thereof, and a peripheral parting pin. The striped print portion 6 is printed. Further, a transparent masking application tape 7 is attached to the upper surface of the solid attachment stripe 2. Then, with the masking application tape 7 left, the solid-adhesion stripe 2 is adhered to the base material 1 by the adhesive 4 (see FIG. 3).

As will be described later, the masking application tape 7 is shown in FIGS. 7 and 8 so that it can be easily peeled from the solid stripe 2 without damaging the body collar 9 applied in a wet state. As shown, a tab piece 7 ₁ is integrally extended to a part of the outer edge thereof, and a perforation 7 ₂ is provided at the base of the tab piece 7 ₁ so as to follow the contour line of the masking application tape 7. When the tab piece 7 ₁ is folded inward, it is sharply folded linearly at the perforation 7 ₂ . Then, the tab piece 7 ₁ is overlapped on the solid bonding stripe 2 while being folded inward as shown in FIG.

(3). After sticking the solid striping stripe 2, the coated surface is cleaned, a primer (undercoat) 8 is spray-painted on the surface of the base material 1, and a two-tone coating is applied on the primer 8. Body color, which is the other part of the color 9
Spray coating (see FIG. 4).

(4) Next, the masking application tape 7 is peeled off in a wet state in which the body collar 9 is not yet dried (see FIG. 5).

By the way, when the masking application tape 7 is peeled off, the tab strip 7 ₁ previously folded inward along the perforations 7 ₂ is picked up to stand up, and then the tape 7 is peeled off to remove the pin stripe. The parting line of the printed portion 6 is made sharp and there is no fear of damaging the body color 9 in a wet state.

(5). Finally, the two-tone color printed portion 5
And, the overcoat clear 10 is spray-painted on both surfaces of the solid stripe 2 printed with the pin stripe printing part 6 and the body color 9 which is the other part of the two-tone color, and then finish curing and drying are performed,
Pay out from the painting line.

As described above, according to the steps (1) to (5),
By coating three times and curing and drying once, that is, the conventional two-tone color partial coating and clear coating can be omitted, and the drying step in the middle can be omitted, resulting in overcoating. The clear two-tone color painting process can be greatly simplified.
Further, by omitting the coating process, the amount of harmful VOCs generated can be reduced.

Although one embodiment of the present invention has been described above, the present invention is not limited to that embodiment, and various embodiments are possible within the scope of the present invention. For example, in the above-mentioned embodiment, the case where the method of the present invention is applied to the synthetic resin side cover for a motorcycle has been described, but it is needless to say that this can be applied to other synthetic resin base materials such as a synthetic resin fuel tank. .

[0029]

As described above, according to the invention described in each claim of the present invention, it is possible to omit the two-tone color coating process and the clear coating process in the conventional two-tone color coating method. By finishing drying once,
Since two-tone color coating with overcoat clear specifications can be performed, the overall coating time is significantly shortened, and as a result, the coating cost can be significantly reduced.

Further, by omitting the coating step, the amount of volatile organic solvent used can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a side cover for a motorcycle, which is subjected to a two-tone color coating with an overcoat clear specification by the method of the present invention.

FIG. 2 is a block diagram showing a coating process according to the method of the present invention.

FIG. 3 is a sectional view of a coating section showing the sequence of coating steps according to the present invention.

FIG. 4 is a sectional view of a coating section showing the sequence of the coating process according to the present invention.

FIG. 5 is a sectional view of a coating section showing the sequence of coating steps according to the present invention.

FIG. 6 is a sectional view of a coating section showing the sequence of coating steps according to the present invention.

FIG. 7 is an enlarged partial plan view taken along arrow 7 of FIG.

FIG. 8 is a partial perspective view of a masking application tape.

FIG. 9 is a block diagram showing a coating process by a conventional method.

FIG. 10 is a sectional view of a coating section showing the sequence of coating steps according to the conventional method.

FIG. 11 is a cross-sectional view of a coating section showing the sequence of coating steps according to the conventional method.

FIG. 12 is a cross-sectional view of a coating section showing the sequence of coating steps according to the conventional method.

FIG. 13 is a cross-sectional view of a coating section showing the sequence of coating steps according to the conventional method.

[Explanation of symbols]

 1 ... Base material 2 ... Solid stripe 3 ... Film 4 ... Adhesive 5 ... Two-tone・ Color printed area 6 ・ ・ ・ ・ Pin stripe printed area 7 ・ ・ ・ ・ Masking application tape 8 ・ ・ ・ ・ ・ ・ Primer 9 ・ ・ ・ ・ ・ ・ ・ Body color 10 ・ ・.... Overcoat clear

Claims (2)

[Claims] 1. When applying a two-tone color coating of an overcoat clear specification on a synthetic resin substrate (1), a two-tone coating is applied to the surface of the synthetic resin substrate (1) after pretreatment.
A step of sticking a solid stripe (2) on which a masking application tape (7) is stuck on the upper surface, on which a color printing part (5) is printed, and a primer ( 8), a step of applying a body color (9) which is the other part of the two-tone color on the primer (8), and a step of applying the body color (9) after the application in a wet state. Then, a step of peeling off the masking application tape (7) on the solid stripe (2), and coating the overcoat clear (10) on the entire surface of the solid stripe (2) and the body color (9). A two-tone color coating method comprising at least a step and a step of finishing and drying the coated surface. 2. The solid sticking stripe (2) has a lower surface of a film (3) coated with an adhesive agent (4) having an adhesive force set for the base material (1), and an upper surface thereof having a two-tone structure. A pin-striped printed part (6) which is a parting line along the outer edge of the printed part (5) of color
The two-tone color coating method according to claim 1, wherein the masking application tapes (7) are applied to the printed surfaces of the printed products.