KR20010002054A - Production Method of Glass Panel of Miscellaneous Patterns - Google Patents

Abstract

PURPOSE: A manufacturing method of colorful patterned glass panel for the interior and exterior materials of construction is provided to substitute for natural stones such as marble and granite. The resultant glass panel has characteristics of unchanged color, high adhesive strength between print and glass and binding to a building wall with a mortar. CONSTITUTION: The manufacturing method comprises the steps of: taking a photograph of the surface of natural stone and analysing into basic colors such as red, blue, yellow and black; printing frit containing Se for red color, Co for blue color, Cd for yellow color and Cr and Cu for black color on a surface of glass(11) by silk screen, based on a color-analyzed film; coating a printed surface(12) with an opaque white frit containing TiO2; sintering at 450-800°C for 3-30min. and then cooling.

Description

Production Method of Glass Panel of Miscellaneous Patterns

The present invention relates to a method for producing a colorful patterned glass panel for stone substitute mainly used as interior and exterior materials of buildings.

As the building is advanced, natural stone panels are used as interior and exterior materials of buildings in addition to traditional tiles and glass. In addition, the natural stone panel has been expanded to a variety of uses, such as dining table, conference table top plate, because it is inherently natural, it is difficult to control the quality, and most of all, the development of alternatives is very expensive.

The development of substitutes for natural stone panels is divided into two directions, namely, a method of attaching a film on which natural stone patterns are printed on a transparent plate of glass or synthetic resin (film adhesive type) and a method of directly printing on a transparent plate (direct printing method). Has been studied.

Film bonding, for example, in order to manufacture a panel having a pattern of natural marble, the marble patterned synthetic resin film is bonded to the back of transparent glass or plastic by adhesive or heat fusion, so that the marble pattern through the transparent glass when viewed from the front To make it appear. However, the panel manufactured by this method is difficult to maintain the color as long as the life of the building (20 to 50 years) because the printed layer is discolored or discolored by ultraviolet rays when used as the exterior material of the building. In addition, since the plastic film has a low critical surface tension, when the cement film is bonded to the wall using cement mortar on the building wall, there is a problem in its adhesive strength.

Direct printing is a method of printing a marble pattern on the back of a transparent plate by using a printing ink in which a pigment is dispersed in an organic solvent by silk screen or the like, and then contacting the glass or plastic panel by heat treatment. However, when glass is used as a substrate, the printing ink is not absorbed into the glass, so printed dots are spread around before being cured and mixed with other nearby colors, so that the vividness of the pattern becomes low, making it difficult to reproduce the pattern of natural stone. In addition, the print layer is peeled off when exposed to water or discolored or discolored when exposed to sunlight (ultraviolet rays).

According to Patent Application No. 99-10164, which is a prior application of the inventor of the present invention, discoloration of the pattern layer can be prevented by first coating a sunscreen before printing the pattern on a transparent plate of glass or plastic. However, this method only prevents discoloration by ultraviolet rays, and since the print insects have essentially the same properties as synthetic resins, defects that are difficult to adhere to the wall using mortar remain.

An object of the present invention is a natural stone that is not discolored or discolored by ultraviolet light, the adhesive strength between the printing layer and glass is high, and the printing layer does not peel off even when exposed to water, and can be bonded only with mortar when applied to a building wall. It is to provide a method for producing a glass panel that reproduces the pattern.

1 is a cross-sectional perspective view of a colorful patterned glass panel of the present invention.

** Explanation of symbols for main parts of drawings **

11: substrate (glass) 12: printing layer

13: white opaque glaze layer

The present invention for achieving the above object is the first to photograph the surface of the natural stone to be reproduced, such as marble or granite color separation to the primary colors of red (magenta), blue (cyan), yellow (yellow), black (black) Steps;

A second screen in which a glaze of four colors, red, blue, yellow, and black, is printed on a silk screen based on a color-decomposed film, and a white opaque glaze is applied to the printing surface as a whole. Steps;

This is fired in a kiln at a temperature of 450 to 800 ° C. for 3 to 30 minutes, followed by a third step of cooling.

Referring to the configuration of the present invention in more detail as follows.

The color separation process by photographing the surface of the natural stone to be reproduced in the first step is the same as the color separation method in the printing of ordinary paper.

Normally, it is enough to decompose it into four basic colors of magenta, cyan, yellow, and black, but it is possible to change the basic colors, and to prepare a special color more clearly, if you want to prepare a special glaze of that color separately You can also treat the color as a spot color. In this case, color separation becomes 5 degrees or more.

Computer graphics can also be used to reproduce not only natural stone such as marble, but also the surface of gems such as narrow jade or tiger stone.

Glaze used in the second stage silkscreen printing process is sufficient to use a glaze printed on ceramics. That is, after firing, glazes that are colored in magenta, cyan, yellow, and black, respectively, are mainly composed of frits and coloring components, and there may be various combinations of coloring components for each color.

For example, glazes containing selenium (Se), cobalt (Co) and cadmium (Cd) are used as magenta, and chromium (Cr) and copper (Cu) as black. Glazes contained together can be used, but commercially available low-temperature firing glazes may be used. However, it is preferable to use after glazing by applying the glaze to be used on the specimen to check the color development.

In addition, since the glaze component is not exposed to the surface as a feature of the present invention, glaze containing heavy metals harmful to the human body, such as lead (Pb) or cadmium (Cd), may be used.

Glaze must be mixed with a medium to be printed on silk screen, but the admixture does not have a coloring component, burns off during firing, and can be used as long as it has an appropriate viscosity. For example, terpene oil is suitable and may be used with a low boiling point organic solvent to adjust the viscosity.

White opaque glazes may be sprayed by spraying them evenly on the printed surface after application of the color glaze. This acts like paper in paper printing.

The white opaque glaze is made of titanium dioxide (TiO ₂ ) and frit, for example, and can be made translucent by lowering the content of the opaque titanium dioxide or thinning the coating thickness. Semi-transparent glass panel can be utilized as a plane light source by mounting a light source on the back. In addition, the glass used as a board | substrate can use not only completely transparent glass but also matte-treated glass or colored glass.

The firing process of the third step is performed for 3 to 30 minutes at a temperature of 450 ~ 800 ℃, the higher the firing temperature, the shorter the firing time.

The kiln may be either a batch type or a continuous type, and the atmosphere of the kiln may be either oxidation or reduction.

When the cooling process after firing is controlled in the same manner as the tempered glass manufacturing process (quenching), the strength is increased.

The construction of the present invention will be further clarified by the following examples.

<Example 1>

In the first step, the polished surface of Indian granite with red feldspar crystals and black mica crystals was photographed with a slide film, followed by 4 degree color separation into magenta, cyan, yellow and black. Ready.

In the second step, four colors of glaze were mixed with terpene oil by using the silkscreen prepared in the first step, printed on the glass surface in turn, and finally, white glaze was applied to the entire surface with a thickness of 1 mm. The glaze used here is a product of commercially available Cerdec AG (Germany), and the CAS-No. And common names are listed in Table 1 below.

In the third step, the glaze-coated glass sheet was calcined at a temperature of 700 ° C. for 10 minutes and then quenched according to a conventional tempered glass manufacturing process.

The colorful patterned glass panel manufactured through the above three-step process reproduced all parts of the granite except for the shiny crystals clearly and perfectly without color mixing. As a result of bending test according to KSL 2002-97, the degree of curvature was measured as 0.02%. As a result of measuring impact resistance and debris condition according to KSL 2002-97, impact resistance was in accordance with the requirements of general tempered glass, and KSM 5000 Accelerated weathering test by -95 (sunshine carbon arc × 300 hours) did not discolor or discolor.

First of all, the critical surface tension (γ _c ) of the glaze coated surface is measured at 78.0 mN / m, which is higher than that of the conventional colorful patterned glass panel bonded with a synthetic resin film having a critical surface tension (γ _c ) of 25 to 45 mN / m. It has been found that it can be used on walls.

<Example 2>

In the first step, after photographing the polished surface of Italian marble with white stripes in ocher (yellow ocher) with a slide film, four silkscreens were prepared as in Example 1.

In the second step, the same glaze as in Example 1 was used, the white glaze was applied to a thickness of 0.5mm, the firing process of the third step was the same as in Example 1.

The colorful patterned glass panel manufactured through the above three-step process was reproduced clearly and perfectly to the defects of the marble surface, and after installing a fluorescent lamp on the back and examining the light transmittance, approximately 10% (dark printed part) to 25% (white) Stripes).

According to the present invention can be made thinner than natural stone when manufactured with tempered glass can reduce the weight of the building.

In addition, the surface of the gemstone may be reproduced as well as the pattern of the natural stone, or in the case of producing translucent, it may be used as a plane light source by mounting the light emitter inside.

Claims (4)

Photographing the surface of the natural stone to be reproduced and performing color separation into primary colors of magenta (red), cyan (blue), yellow (yellow), and black; A second screen in which a glaze of four colors of magenta, cyan, yellow, and black is printed on the surface of the glass, respectively, using a silk screen, and a white opaque glaze is applied on the printing surface as a whole. Steps; The method of manufacturing a multi-colored glass panel comprising a third step of baking this for 3 to 30 minutes at a temperature of 450 ~ 800 ℃ in a kiln. The method of manufacturing a colorful patterned glass panel according to claim 1, wherein the white opaque glaze of the second step is applied thinly to make it translucent. The method of manufacturing a colorful patterned glass panel according to claim 1, wherein the glass serving as the substrate is strengthened by quenching the temperature in the cooling step after the third step. The method according to claim 2, wherein the light source is mounted inside the translucent glass panel to be used as a planar light source.