JPH07275789A - Method for coating decorative sheet - Google Patents

Abstract

PURPOSE:To eliminate the flowing of an excess coating material into a recessed part even if the coated quantity is large and to properly maintain the recessed part to improve cubic effect of a recessed and projection surface by turning the recessed and projection surface of a substrate downwards and bringing a coating roll into press-contact with the downwards turned recessed and projection surface to perform coating. CONSTITUTION:After the surface of a projecting plate 17 which is made a coating surface on which recessed and projection parts 18, 19 are formed is previously subjected to sanding treatment, the projection plate 17 is turned over to turn the recessed and projection surface downwards. A substrate 11 whose recessed and projection surface is turned downwards is fed into between a coating roll 12 and a feeding roll 13. Then, since the coating roll 12 applies a coloring coating material 14 onto the surface of a projecting part 19 only with pressure contact force, the excess coloring coating material does not flow into a recessed part 18 which becomes above the projection part 19 even if the applied quantity is large. After that, the substrate 11 is turned over again to turn the recessed and projection surface upwards to dry the coloring coating material 14, and also a transparent coating material is applied to the whole recessed and projection surface by a flow coater which is a method of upward applying, and is dried to complete a decorated plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for coating a decorative board.

[0002]

2. Description of the Related Art Conventionally, when coating a decorative plate having irregularities on its surface with a roll coater, the irregular surface of the substrate is faced up and the coating roll is pressed against the upward irregular surface to produce a surface. I was painting.

[0003]

By the way, when the coating amount of the coating material is too large, as shown in FIG.
Was accumulated in the concave portion 103 of the substrate 102, and the depth of the concave portion 103 was correspondingly reduced, which impaired the stereoscopic effect. Moreover, the paint 10 that could not be completely accumulated in the recess 103
1 swelled up on both sides of the concave portion 103, and the portions 104 thereof were whitened, and the appearance of the decorative plate was extremely poor.

There is also a method of reducing the coating amount so that the coating material does not flow into the concave portion 103 when the portion other than the concave portion 103 is coated. It will be in a state of. If it is painted normally, a part of the paint 105
Had flowed into the recess 103, and the appearance was poor. As described above, when coating a decorative plate having irregularities formed on its surface, attention is paid to the finishing of the concave portions, and it is difficult to perform a clean painting while maintaining sharp irregularities.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for coating a decorative plate that can cleanly finish the concave portion of the decorative plate having an uneven surface.

[0006]

A method according to the above-mentioned object.
The coating method of the decorative board described is with the uneven surface of the substrate facing downward,
A coating roll is pressed against the downwardly facing uneven surface for coating.

According to a second aspect of the present invention, in the method for coating a decorative plate, after coating the uneven surface of the substrate, it is appropriately dried, and then the substrate is turned upside down and a coating roll is pressed against the uneven surface. It is configured such that it is painted with a paint of a color different from that of the paint at the time of painting.

[0008]

In the method of coating a decorative board according to claims 1 and 2, the coating material is applied to the concave-convex surface of the substrate facing downward by means of a coating roll. Therefore, even if the coating amount increases, extra coating material is applied. Does not flow into the concave portion arranged above the convex portion. As a result, a decorative plate having a beautiful recess can be obtained,
It becomes an uneven surface with excellent three-dimensional effect. Particularly, in the method for coating a decorative plate according to claim 2, an uneven surface of the substrate is faced up, and an undercoat including a concave portion is performed as before, and then,
By drying the undercoat paint and then coating the convex portion with the uneven surface facing downward, the concave portion and the convex portion can be easily made different in color with a beautiful finish.

[0009]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. In addition, here, the manufacturing method of the floor material which is an example of a decorative board is taken as an example. Here, FIG. 1 is a side view of a main part of a decorative plate coating apparatus to which the decorative plate coating method according to the first embodiment of the present invention is applied, and FIG. 2 is manufactured by the coating method of the first embodiment. FIG. 3 is an enlarged cross-sectional view of the main part of the decorative plate, and FIG. 3 is an enlarged cross-sectional view of the main part of the decorative plate manufactured by the coating method for the decorative plate according to the second embodiment of the present invention.

As shown in FIG. 1, a decorative plate coating apparatus 10 to which a decorative plate coating method according to a first embodiment of the present invention is applied is a coating roll arranged below a conveyance path for a substrate 11. 12 and a feed roll 1 arranged above the conveying path
3, and a paint container 15 containing a colored paint 14 in which the lower portion of the coating roll 12 is dipped is disposed below the coating roll 12. In addition, a doctor roll 16 for adjusting the coating amount of the color coating material 14 is arranged on the side of the coating roll 12.

As the coating roll 12, a rubber roll having a smooth finish can be generally adopted, but in addition, an elastic roll whose peripheral surface is coated with an elastic material such as foamed synthetic resin can also be used. Further, the pressing force of the coating roll 12 on the substrate 11 is set to such a pressure that the coating roll 12 can coat the convex portion 19 of the substrate 11 so that the coating material does not adhere to the concave portion 18.

As shown by the arrow in FIG. 1, the coating roll 12 is rotated in the opposite direction to the traveling direction of the substrate 11 fed by the feed roll 13 so that the coloring paint 14 is rubbed on the surface of the substrate 11. However, without being limited to this, it may be rotated in the same direction as the traveling direction.

On the surface of the substrate 11, from the top of the projecting plate 17,
A plurality of V-groove-shaped recesses 18 are formed using a groove processing machine at a predetermined pitch in the outer edge portion and in the short width direction,
With the appearance of the concave portion 18, the convex portion 19 is formed on the surface of the substrate 11.
Is formed. The shape of the recess 18 is not limited to the V groove, and may be any other shape. The fruit is formed around the projecting plate 17. In addition, the veneer 17
It is not always necessary to attach.

Next, the decorative plate coating apparatus 1 according to the first embodiment.
A method of coating a decorative board using 0 will be described. A sanding process is performed in advance by a belt sander on the surface of the projecting plate 17 on which the uneven portions 18 and 19 to be painted surfaces are formed, and this is inverted to make the uneven surface downward.

Thereafter, as shown in FIG. 1, the substrate 11 having the uneven surface facing downward is applied to the coating roll 12 and the feed roll 1.
3 to the coating roll 12 with a pressing force capable of coating only the surface of the convex portion 19 of the substrate 11 on the uneven surface.
Since the coloring paint 14 is applied by the above, even if the application amount is large, the excess coloring paint 14 does not flow into the recesses 18 above the projections 19. Then, as shown in FIG. 2, it is turned over again so that the uneven surface is directed upward, and the colored coating material 14 is dried by a dryer, and then the transparent coating material 20 is entirely covered by the flow coater which is a conventional upward coating method. Then, the transparent coating material 20 is dried by a dryer to produce a floor material which is an example of a decorative board.

As described above, since the coloring paint 14 is applied by using the applying roll 12 with the pressing force capable of applying only the surface of the convex portion 19, even if the application amount is increased, extra coloring is applied. The coating material 14 does not flow into the concave portions 18 above the convex portions 19, and thereby a decorative plate having a beautiful concave portion 18 is obtained, which is an uneven surface having an excellent three-dimensional effect.

Next, with reference to FIG. 3, a method of coating a decorative plate according to the second embodiment of the present invention will be described. Here, as an example of a decorative plate, a method of manufacturing an exterior material made of an inorganic material will be shown. In the second embodiment, as shown in FIG. 3, as a substrate 30, a slurry prepared by mixing a hydraulic inorganic material, a fiber, an additive, and water in a predetermined amount is used as a substrate having an irregular surface on its design surface. A plate having a concave portion 31 having a dish-shaped cross section and a convex portion 32 having a trapezoidal cross-section on the surface of the substrate 30 is adopted, which is press-molded by a pressing board and then dried and cured.

The method for coating a decorative sheet of the second embodiment is as follows. First, for example, a flow coater adopted for applying the transparent coating material 20 in the first embodiment is used to apply a colored undercoat to the entire surface of the uneven surface facing upward. The paint 33 is applied and dried by a dryer, and then the substrate 30 is inverted to make the uneven surface face downward. Instead of coating the entire surface as described above, a colorant may be mixed into the material forming the substrate 30 to form a colored substrate. Then, the convex portion 3 of the colored undercoat paint 33 is applied by the decorative plate coating apparatus 10 of the first embodiment.
The second portion is painted with a coloring paint 34 having a color different from that of the paint 33, and then it is inverted again to dry the applied coloring paint 34 to manufacture an exterior material which is another example of the decorative board. The exterior material produced in this way is
No. 1 had no adhesion of the colored paint 34, and it was a very beautiful two-color brick tone.

In this way, with the uneven surface of the substrate 30 facing upward, the conventional undercoating including the concave portion 31 is performed, then the colored undercoat paint 33 is dried, and then the uneven surface is directed downward. With the decorative board coating device 10 of the first embodiment,
If the convex portion 32 is coated with a different color coloring paint 34,
The concave portion 31 and the convex portion 32 can easily be made different colors with a beautiful finish.

The present invention has been described above with reference to the drawings. However, the present invention is not limited to this embodiment, and even if there are design changes and the like without departing from the scope of the invention, the present invention is included.

[0021]

According to the method of coating a decorative board according to the first and second aspects of the present invention, the uneven surface of the substrate is faced downward and the coating material is applied to the uneven surface by a coating roll. However, even if the amount becomes large, excess paint does not flow into the recesses, whereby a decorative plate having beautiful recesses can be obtained, and the uneven surface has an excellent three-dimensional effect.

Particularly, in the method for coating a decorative plate according to the second aspect of the present invention, the undercoating including the recesses is performed as in the conventional method with the uneven surface of the substrate facing upward, and then the undercoating paint is dried. , If you paint the convex part with the uneven surface facing down,
The concave and convex portions can be easily made different colors with a beautiful finish.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a decorative plate coating apparatus to which a decorative plate coating method according to a first embodiment of the present invention is applied.

FIG. 2 is an enlarged cross-sectional view of a main part of a decorative board manufactured by the coating method according to the first embodiment.

FIG. 3 is an enlarged cross-sectional view of a main part of a decorative plate manufactured by a method for coating a decorative plate according to a second embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional view of a main part of a decorative plate manufactured by a conventional decorative plate coating method.

FIG. 5 is an enlarged cross-sectional view of a main part of another decorative plate manufactured by the conventional decorative plate coating method.

[Explanation of symbols]

 10 Decorative Plate Coating Equipment 11 Substrate 12 Coating Roll 13 Feeding Roll 14 Coloring Paint 15 Paint Container 16 Doctor Roll 17 Veneer 18 Recess 19 Convex 20 Transparent Paint 30 Substrate 31 Recess 32 Convex 33 Colored Undercoat 34 Colored Paint

Claims (2)

[Claims] 1. A method for coating a decorative plate, which comprises coating a substrate with the uneven surface facing downward and pressing the application roll against the downwardly facing uneven surface. 2. After coating the uneven surface of the substrate, it is appropriately dried, and then the substrate is turned upside down to press the application roll against the uneven surface, and a paint different in color from the paint at the time of coating is used. A method for painting a decorative board, which is characterized by painting.