JPS59145071A - Decorative coating method for rugged surface - Google Patents

Abstract

PURPOSE:To enable to express the touch feeling peculiar to manual coating even in automatic massive coating, by applying paint A as a homogeneous coating film onto the entire surface of a workpiece to be coated having a decorative rugged surface and then paint B onto said surface by a curtain flow type. CONSTITUTION:Complex ruggedness comprising angular cavities 2 similar to the surface of piled-up stones and differences 3 in level expressing gaps caused by roughly piling is applied onto a decorative outer wall plate 1 as a workpiece to be coated. Paint A is applied as a homogeneous coating film onto the rugged surface of said decorative plate 1 by a roll coater or the like, and then paint B is let flow down on the coating film A while forming the curtain-shaped stream of a paint film over the width of the plate 1 by a curtain flow coater or the like. Hereon, an angular parting phenomenon is brought about by the correlative action of the viscosity of the paint B and air because of the presence of the cavities 2 and the differences 3 in level. Thus, the graceful decorative outer wall plate 1 having the parts where the paint A is exposed is obtained.

Description

[Detailed description of the invention] 1: Concerning decorative coating methods for painted objects.

Recently, decorative boards such as calcium silicate (calcium silicate, slay), hard FJ wood chip cement boards, etc. have been attached to the exterior walls of buildings for exterior finishing. Techniques have been used to create a wall-like texture by adding unevenness to the surface.However, if the uneven surface is painted with a homogeneous entire surface, most of the charm of the uneven surface that has been painstakingly applied will be lost. I'll get lost.

The present invention addresses the above-mentioned situation and aims to provide a coating method that can perform beautiful and tasteful coating that takes advantage of decorative uneven surfaces, and is also suitable for large-volume processing through automation. It is something.

The present invention will now be described in detail with reference to the drawings. ] is an exterior wall decoration board with unevenness on the surface that reflects the feel of stone masonry. It is attached. 4 is a roll-type coating machine with coating rolls 41, 4.
No. 2 has solvent resistance, elasticity that allows uniform coating by contacting uneven surfaces evenly, and toughness that can withstand contact with uneven surfaces.

43 is a supply port for paint A, and 44 is a feed port through which the decorative plate 1, which is an example of the object to be painted, passes in the direction of the arrow, thereby uniformly coating the entire surface on the uneven surface. Of course, coating with paint A may be done by other methods without using the roll coater 4.

5; In the curtain flow coater, paint B flows down from the head 51 over the middle or more of the decorative board 1 while forming a paint film flow 6 in a curtain shape, and is circulated from the receiving tank 52 to the head 51. When the decorative board 1 that has been primarily coated with paint A is moved in the direction of the arrow by the conveyors 53 and 54, a paint film flow 6 is applied to the decorative board 1 and scattered on the surface of paint A, but when Because of the presence of the step 3, the interaction between the viscosity of the B paint and the air causes a parallax phenomenon, trapping air in the recessed area and creating a break-through area where the B paint is not applied, exposing the A paint only in that area. This allows the natural stone wall joints to appear exposed to the elements. The appearance of the breakthrough part in B is determined by adjusting the activity and color of paints A and B, the unevenness of the painted object, the speed of the flow coater's conveyor, and the passage of the paint film taking into account the situation of the direction of the unevenness. Depending on the direction of the painting, it changes slightly, giving it a texture that is as good as hand-painted.

If you paint with B paint before A paint dries, a mixture of A paint and B paint will ooze out mainly in the breakthrough area, and you can also do decorative painting (looking for interest). can. Since the present invention is configured as described above, it is possible to automatically apply large quantities of coating to objects with uneven surfaces using a special sponge roll flow coater, and it is also possible to apply a coating that has been conventionally used exclusively for homogeneous coating on flat surfaces. Curtain flow coater can be applied to painted objects with uneven surfaces to adjust the activity of the paint used.
By adjusting the thickness of the falling paint film, the breakthrough part due to the illusion phenomenon is revealed, giving a nuance and giving the hand-painted texture 1 and L.
1j It is an invention with a wide range of applications that allows whiteness to be expressed by automatic mass painting.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention. Figure 1 is an enlarged perspective view of an object to be coated with decorative irregularities (a decorative board imitating masonry), and Figure 2 is a roll-type coating machine! An explanatory diagram of the coating, Figure @3 is a curtain flow coater (Explanatory diagram of Koyoru painting, No. 4)
The figure is an explanatory diagram of the appearance of a torn part due to the illusion phenomenon. 1~N! Decorative board for the exterior wall of the property 2 ~ Hollow 3 ~ Step 41.4
2 ~ Special sponge roll 43 ~ A paint supply port 44
~Feed roller 5~Curtain flow coater 51~
Head tank 52 ~ Receiving tank 53. 54 ~ Conveyor 6 ~ Paint film X ~ Torn area A-A paint B-B paint patent applicant Narashino Kako Co., Ltd.

Claims (2)

[Claims] (1) After uniformly applying paint A to the uneven surface of the object to be painted, which has decorative irregularities, paint B is flowed down in a film form over the width of the object at a constant speed. Decorative coating method for uneven surfaces characterized by performing secondary coating by moving and passing (2) In the decorative coating method for an uneven surface described in claim (1), if the second coating with the B coating is performed before the coating with the A coating dries.