JPS5915103B2 - Method for manufacturing decorative glass plates - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a tile-shaped decorative glass plate having a colored opaque pattern on one side of a flat, smooth glass plate such as a plain glass plate, a float glass plate, or a flat glass plate.

Tile-shaped decorative glass plates with a uniform opaque colored coating formed on one side of the glass plate or tile-shaped glass plates with a synthetic resin film printed with a marble pattern pasted are known, and like ceramic tiles, these can be used on wall surfaces. It is especially used for decorating interior walls.

The object of the present invention is to provide a new process for producing tiled decorative glass sheets, which consists in forming an opaque colored coating with a unique thread-like colored pattern.

According to the present invention, when producing a decorative glass plate in which a colored opaque coating layer is formed on one surface of a flat glass plate, a colored opaque paint for scattering is spray-coated on the surface of the glass plate, and A step of forming a colored opaque base coat having a pattern, and then uniformly coating the base coat with a colored opaque paint having a color different from that of the base coat, and drying to form a uniform colored opaque coat. Provided is a method for manufacturing a decorative glass plate, which comprises the steps of: forming a decorative glass plate;

In one embodiment of the present invention, prior to applying the scattering paint, a colored transparent paint is first applied uniformly over the entire surface of the glass to form a colored transparent base coat in advance. .

Next, a colored opaque coating film with a irregular thread-like pattern and a uniform colored opaque coating film are sequentially formed.

A softer appearance can thus be imparted to the decorative board.

FIG. 1 schematically shows a plan view of the surface side on which no coating film is formed of a tile-shaped decorative board manufactured by the method of the present invention, and FIG. 2 schematically shows a cross section thereof.

Reference numeral 1 indicates a glass plate, 2 indicates a colored opaque coating film having a thread-like pattern directly applied to the surface of the glass plate, and 3 indicates a colored opaque coating film having a different color formed covering this coating film.

As shown in FIG. 1, when viewed from the surface on which no coating film is formed, a colored opaque coating film 2 having a large number of disordered thread-like patterns is observed.

FIG. 3 shows a cross section of a decorative board according to another embodiment, in which a thread-like patterned coating film 2 is formed on a colored transparent base coating film 4.

Next, embodiments of the present invention will be described.

The paint used for thread coating (also called string painting) in the present invention is generally referred to as a thread coating, which contains a melamine resin as a main agent (coating film forming element) and is used to impart desired coloration. It is a paint made by dissolving or dispersing pigments, additives such as vinyl acetate resin to form a disordered thread pattern, other additives to improve adhesion to glass, dispersants, etc. .

When this paint is sprayed onto the surface of a glass plate with a spray gun, it ejects in the form of fluff, and when it settles on the surface, it creates a thread-like pattern.

When applying the scattering paint, 4 to 2 parts by volume of thinner are mixed with 6 to 8 parts by volume of the mother liquor, and the viscosity is adjusted to be suitable for spraying.

The viscosity is preferably 50 to 100 Cst at room temperature.

The spray amount is preferably 50-150 gr 7m2.

Next, opaque colored paints of different colors are applied over the thread-like pattern coating.

The opaque colored paint used for this purpose usually contains a melamine resin as the main ingredient, that is, as a film-forming element.
It may also contain other synthetic resins such as acrylic resins as a main ingredient.

In addition to the main agent, the paint contains 1 to 30% by weight of pigment, additives to increase adhesion to the glass surface, such as silicone resin, and dispersants, if necessary, up to 5%. It is dissolved or dispersed in a suitable solvent such as a xylene isobutal mixed solvent.

Pigments that give the desired color to paint include, but are not limited to, carbon (black), lead chromate (vermilion or yellow), titanium white (white), red organic pigments, and green organic pigments. isn't it.

The viscosity of paint for spray painting is 60-150Cs at room temperature.
For example, it is preferably adjusted by mixing 4 to 1 volume part of thinner to 6 to 9 volume parts of the thick paint (mother liquor).

When painting, use a spray pressure of 2 to 4 Kp/d.
Spray evenly on the painted surface.

The spray amount is preferably 50 to 150 gr/m2.

After painting, the paint is dried and baked by heating at 100 to 200°C for 10 to 20 minutes.

The above uniform coating process can be performed two or more times to increase the shading power of the coating film.

As shown in FIG. 3, when a colored transparent base coat is first formed, a transparent or colored transparent quick-drying or dry-baking paint called clear lacquer is usually used.

This type of paint is made by dissolving or dispersing organic dyes, organic pigments, or inorganic transparent pigments in a quick-drying solvent using melamine resin, cellulose derivative, acrylic resin, etc. as the main ingredient, and this paint has a viscosity of 30 to 70 Cst. After adjusting it, spray it evenly onto the surface of the glass plate.

The spray amount is preferably 40 to 70 g/m2.

By forming a colored transparent base coat, a softer appearance can be given to the thread-like pattern.

The decorative glass plate obtained as described above can be used as an interior or exterior material having a different appearance from conventional ceramic tiles or colored glass plate tiles by applying the painted surface of the glass plate toward the wall surface. I can do it.

[Brief explanation of the drawing]

FIG. 1 schematically shows a plan view of a decorative glass plate according to the present invention, and FIGS. 2 and 3 schematically show a cross section of the decorative glass plate. 1...Glass plate, 2...Colored opaque coating film with irregular thread-like pattern, 3...Uniform colored opaque coating film, 4...Uniform coloring Transparent coating.

Claims (1)

[Scope of Claims] 1. In manufacturing a decorative glass plate in which a colored opaque coating layer is formed on one surface of a flat glass plate, a colored opaque coating for scattering is spray-coated on the surface of the glass plate, forming a colored opaque paint film having a thread-like pattern, and then uniformly coating the base paint film with a colored opaque paint having a color different from that of the paint film, and drying to form a uniform colored opaque paint film. A method for manufacturing a decorative glass plate comprising the steps of: 2. The method according to claim 1, wherein a colored transparent paint is first applied uniformly over the entire surface of the glass surface to form a colored transparent base coat layer in advance.