KR20030067600A - Method for manufacturing artificial marble board and artificial marble board thereby - Google Patents

Abstract

PURPOSE: A method for manufacturing artificial marble board is provided to reduce manufacturing cost by reproducing particular multicolor patterns of natural marble using an ordinary printing ink used in fabric screen printing, and an artificial marble board manufactured by the method is provided. CONSTITUTION: In an artificial marble board manufacturing method for reproducing multicolor patterns of natural marble by repeating a plural times the processes of forming a printing layer by screen printing paint of a color on one side of glass board(20) and hardening the printing layer with color of the paint used being changed, the method for manufacturing artificial marble board comprises the process of hardening the printing layer by heating the printing layer of the final screen printing to a temperature of 150 to 200 deg.C for 15 to 30 minutes after forming the printing layer by final screen printing, wherein paint used in the screen printing comprises 10 to 20 wt.% of solvent for the total paint, wherein the paint used in the screen printing has a viscosity of 10 to 200 g/ms, wherein reflecting body powder(19) is added to the paint used in the screen printing, wherein third printing layer(16) is additionally formed by third printing a paint on one side of the glass board on which first printing layer(12) and second printing layer(14) are formed, and wherein the artificial marble board completed through the hardening process is adhered to the floor(40) of indoor or outdoor as a decorative material for building.

Description

Method for manufacturing artificial marble and artificial marble manufactured by the same {Method for manufacturing artificial marble board and artificial marble board thereby}

The present invention relates to a method of manufacturing artificial marble, and to the artificial marble produced by the present invention, and more particularly, to a method of manufacturing artificial marble by printing a multicolored pattern of natural marble on a glass plate, and to the artificial marble produced thereby.

Natural marble, which is formed by recrystallization after lime or dolomite is subjected to contact or wide-area metamorphism, has a unique multicolored pattern and gloss when polished, and is used as interior and exterior materials of buildings. However, the building material made of natural marble has a problem that its thickness is usually 10 mm or more, its volume and weight are large, and its price is expensive.

Thus, although the price is cheaper than natural marble, much effort has been made to manufacture artificial marble that can give a feeling like natural marble, and Korean Patent Publication No. 10-0316825 discloses an example of artificial marble. The artificial marble disclosed in the domestic registered patent is a coating layer containing a component similar to the components constituting the glass, such as silica, lead oxide, boron oxide, and alkali metal oxide (hereinafter referred to as 'glass component') on the printing layer on the glass plate. It is produced by heating at 400 to 900 degrees Celsius to allow the glass component to be fused with the glass plate is to be prepared by fixing the paint to the glass plate. By the way, the artificial marble prepared by the above method, because the use of a special ink mixed with a large amount of glass components is not only increased in cost, there is a problem that it is difficult to form a variety of precise multi-colored pattern due to the glass component. In addition, the process of heating to a high temperature is required, there is a problem that the manufacturing cost increases.

The present invention is to solve the above problems, by using a common printing ink used for screen printing, such as fabrics by reproducing a multicolored pattern unique to natural marble, artificial marble manufacturing method that can reduce the manufacturing cost and It aims at providing the artificial marble manufactured by this.

1 is a cross-sectional view schematically showing an example of a process of forming a printing layer on a glass plate in the artificial marble manufacturing method according to the present invention.

Figure 2 is a plan view showing an example of a view of the glass plate formed with a first printing layer on one surface, the other surface of the glass plate in the method of manufacturing artificial marble according to the present invention.

3 is a plan view illustrating an example of a state in which a second printing layer is formed on one surface of the glass plate of FIG. 2 and the glass plate is viewed through the other surface.

4 is a plan view illustrating an example of a third printing layer formed on one surface of the glass plate of FIG. 3 and the glass plate seen through the other surface.

FIG. 5 is a cutaway perspective view illustrating a state in which artificial marble made by curing the glass plate of FIG. 4 is attached to a floor; FIG.

<Description of the symbols for the main parts of the drawings>

10 ... Artificial Marble 12 ... First Printing Layer

14 ... Second Printing Layer 16 ... Third Printing Layer

19 ... reflector powder 20 ... glass plate

30 ... double-sided tape 40 ... bottom

In order to achieve the above object, the present invention, screen printing one color of paint on one surface of the glass plate to form a printing layer, and the process of curing the printing layer, changing the color (color) of the paint used In the method of manufacturing artificial marble which repeats a plurality of times and reproduces the multicolored pattern of natural marble,

After forming a printed layer by screen printing of the last time, it is characterized in that the last printing layer is cured by heating at a temperature of 150 to 200 degrees Celsius for 15 to 30 minutes.

According to a preferred embodiment of the present invention, the paint used in the screen printing may have a weight ratio of 10% to 20% of the solvent relative to the entire paint.

According to a preferred embodiment of the present invention, the paint used for the screen printing may have a viscosity of 10 to 200 g / ms.

According to a preferred embodiment of the present invention, a reflector powder may be added to the paint used for screen printing.

In the aspect of the article, the artificial marble according to the present invention is characterized in that it is manufactured by any one of the above-described artificial marble manufacturing method.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view schematically showing an example of a process of forming a printing layer on a glass plate in the artificial marble manufacturing method according to the present invention.

Referring to the drawings, in order to form an irregularly visible multicolored printed layer unique to natural marble on one surface of the glass plate 5, a so-called screen printing method is used. In order to perform screen printing on the glass plate 5, a screen 1, a stencil 2, a paint 3, and a squeegee 4 are required. However, the tools 1, 2, 3, and 4 described above are merely examples of the simplest tools for performing screen printing, and screen printing can also be performed by an automated printing press.

The process of forming the printed layer 7 by screen printing on one surface of the glass plate 5 using the tools 1, 2, 3, and 4 described above will be described below. First, the screen 1 is covered on one surface of the glass plate 5. The screen 1 is made by tensioning a fabric made of silk or chemical fiber, and has a large number of fine meshes, and a stencil 2 formed in a predetermined pattern is attached to the bottom thereof. The stencil 2 may be formed by cutting a lacquer film or a thin fat or oil in a predetermined pattern. However, unlike shown, without using the stencil 2, it is also possible to directly block specific meshes of the screen 1 with glue or glue. Next, the paint 3 is poured onto the screen 1 and then pushed onto the squeegee 5 so that the paint 3 spreads over the screen 1 and penetrates into the screen 1 at the same time. Then, the paint 3 passes through the mesh of the screen 1 through a portion other than the portion to which the stencil 2 is attached, so that a printed pattern 7 of desired pattern is formed on the glass plate 5. do.

The coating material used to form the printing layer 7 in the glass plate 5 as mentioned above is made by mixing a solvent with the normal printing ink used for screen printing, such as textiles. Specifically, the printing ink is a mixture of pigments, such as polyvinyl chloride (PVC) resin, acrylic resin, polypropylene (PP) resin, polyester (PE) resin, epoxy resin, polyurethane (PU) resin Can be made. In addition, as the solvent, so-called slow-drying solvents such as butanol, butyl cellosolve, and cyclohexanone, which have relatively low volatility, may be used. In contrast to the slow-drying solvent, there are fast-drying solvents such as xylene, isopropyl alcohol (IPA), acetone (Ecetone), ethanol (methanol), methyl ethyl ketone (MEK). The quick-drying solvent is mainly mixed with a spray paint that requires rapid curing at room temperature, and has a relatively high volatility, which may cause air pollution and deterioration of the working environment. The paint for forming the print layer 7 is difficult to stick on the glass plate 5 when the viscosity is too low, so that a specific printed pattern is difficult to be maintained, and when the viscosity is too high, the paint passes through the mesh of the screen 1. It is preferable to have a viscosity between 10 g / ms and 200 g / ms since it is difficult to follow. For this purpose, the weight ratio of the solvent mixed in the paint is preferably 10 to 20% of the total weight of the paint.

FIG. 2 is a plan view showing an example of a glass plate having a first printing layer formed on one surface of the artificial marble manufacturing method according to the present invention seen through the other surface of the glass plate, and FIG. A second printed layer is formed on one surface, and a plan view showing an example of a state in which the glass plate is seen through the other surface, and FIG. 4 is a third printed layer formed on one surface of the glass plate of FIG. A plan view showing an example of the appearance seen from the other surface. On the other hand, Figure 5 is a perspective view showing the appearance of the artificial marble made by curing the glass plate of Figure 4 attached to the floor.

Referring to FIG. 2, the first printing layer 12 is formed by performing primary printing on one surface of the glass plate 20 in a process similar to the printing layer forming process illustrated in FIG. 1. The paint used to form the first printed layer 12 is similar to that described with reference to FIG. The first printed layer 12 shown is preferably left to stand at room temperature for 3 to 4 hours, or cured by heating at a temperature of 120 to 180 degrees for 2 to 5 minutes. This is because curing of the first printed layer 12 is sufficient if the first printed layer 12 does not fall or smear from the glass plate 20 during successive secondary and tertiary printing processes. This is because there is a fear that the manufacturing cost will increase if curing at a higher temperature or for a longer time.

Referring to FIG. 3, as shown in FIG. 2, secondary printing is performed on one surface of the glass plate 20 on which the first printing layer 12 is formed, and the second printing layer 14 is additionally formed. Since the process of forming the second printed layer 14 is also similar to the process of forming the printed layer illustrated in FIG. 1, a detailed description thereof will be omitted. However, the paint used to form the second printed layer 14 has a difference in properties such as color, lightness, or saturation from the paint used to form the first printed layer 12. Are distinguished from each other. In a preferred embodiment, the reflector powder 19 may be further mixed with the paint used to form the second printed layer 14. Then, as shown in FIG. 3, the reflector powder 19 is evenly distributed on the second printed layer 14. The reflector powder 19 is called so-called glitter powder or pearl, and is generally made by coating a high gloss color on a thin polyester film or aluminum foil and cutting it into fine particles. In the illustrated embodiment, the size of the reflector powder 45 is exaggerated for easy identification, but in a commercial embodiment, a smaller reflector powder may be used. The curing of the second printed layer 14 shown is also left for 3 to 4 hours at room temperature, as in the curing of the first printing layer 12 described above, or heated for 2 to 5 minutes at a temperature of 120 to 180 degrees Celsius It is preferable to carry out.

Referring to FIG. 4, as shown in FIG. 3, third printing is performed on one surface of the glass plate 20 on which the first printed layer 12 and the second printed layer 14 are formed. This part is formed. Since the process of forming the third printed layer 16 is also similar to the process of forming the printed layer illustrated in FIG. 1, a detailed description thereof will be omitted. However, the paint used to form the third printed layer 16 is different from the paint used to form the first printed layer 12 and the second printed layer 14, such as color, lightness, or saturation, respectively. , The colors are distinguished from each other. The reflector powder 19 may be further mixed in the paint used to form the third printed layer 16, so that the reflector powder 19 is evenly distributed on the third printed layer 16 as shown in FIG. 4. Is dispersed. Since the reflector powder 19 is similar to that mixed in the second printed layer 14, description thereof will be omitted. When the third printed layer 16 is viewed through the other side of the glass plate 20, an area not occupied by the first printed layer 12 and the second printed layer 14 as shown in FIG. 4. Occupies the so-called background area. As shown, in order to allow the third printed layer 16 to occupy the base area, the third printing is preferably performed on the entire surface of the glass plate 20 without using the stencil 2 (see FIG. 1). . Then, as shown in FIG. 5, the third printed layer 16 overlaps the first printed layer 12 and the second printed layer 14. However, by a method of accurately blocking the area occupied by the first printed layer 12 and the second printed layer 14 with a stencil 2 (see FIG. 1) and performing tertiary printing on one surface of the glass plate 20. The third printed layer 16 may occupy the base area.

The third printed layer 16 is a final printed layer formed on one surface of the glass plate 20 to manufacture artificial marble in the illustrated embodiment, and is cured by heating at a temperature of 150 to 200 degrees Celsius for 15 to 30 minutes. Let's do it. In order to cure the third printed layer 16, the glass plate 20 on which the first, second, and third printed layers 12, 14, and 16 are formed is placed on a heater, and thus, the first and second prints. The layers 12 and 14 are also cured once more under the same conditions as the third printed layer 16. When the printed layers 12, 14, and 16 are heat-cured for a short time to a temperature lower than the temperature of 150 to 200 degrees Celsius, the printed layers 12, 14, and 16 are not sufficiently adhered to the glass plate 20, and thus completed. When the artificial marble 10 (see FIG. 5) is used, the printed layers 12, 14, and 16 may bleed or fall off due to an impact. On the other hand, when heat-hardened for too long at a temperature higher than the temperature range, the glass plate 20 may be weakened or melted, and manufacturing costs may be increased, which is not preferable.

The artificial marble 10 completed through the curing process, as shown in Figure 5 may be attached to the floor 40 of the indoor or outdoor as a decorative material of the building. When the artificial marble 10 is attached to the bottom 40, one surface on which the print layers 12, 14, and 16 are formed faces the bottom 40. In addition, in order to prevent the printed layers 12, 14, and 16 from being damaged, it is preferable to bond the double-sided tape 50 between the printed layers 12, 14, and 16 and the bottom 40. Do. However, FIG. 5 is only an example of installing the artificial marble 10, and may be attached by an adhesive or the like, and the attachment place may be a wall or an outer surface of a home appliance.

As the glass plate 20 for the artificial marble 10, it is preferable to use a tempered glass plate that has been heat-treated appropriately to withstand impact, and thus, the artificial marble 10 made of the tempered glass plate has a thickness of the glass plate. Only about 5 to 6mm may exhibit the same strength as that of natural marble of 10 to 12mm thickness.

The artificial marble 10 installed as described above has a multicolored pattern peculiar to the print layers 12, 14, and 16 formed on the bottom surface opposite to the upper surface of the glass plate 20 facing upward. The multicolored pattern is shown on the upper surface of the glass plate 20. Since the light reflected by the printed layers 12, 14, and 16 on which the multicolored patterns are printed enters the viewer's field of view through the glass plate 20, the viewer can feel a soft luster. In addition, when the reflector powder 19 is distributed in some of the printed layers 14 and 16 as shown in the illustrated embodiment, a more brilliant luster may be felt. If the glass plate 20 is a 5 to 6mm thick tempered glass plate as described above, since most of the ultraviolet rays contained in the sunlight do not pass through the tempered glass plate, the printed layers 12, the multicolored pattern is printed 14 and 16) are not feared to be discolored by ultraviolet light, and thus long-lasting durability of the product can be ensured.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. For example, unlike the description with reference to FIGS. 2 to 4, in the manufacture of artificial marble, multicolored patterns may be reproduced by screen printing of 4 or more orders, or multicolored patterns may be reproduced by secondary screen printing. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

The above-described artificial marble manufacturing method of the present invention can accurately reproduce the multicolored pattern peculiar to natural marble using ordinary printing inks used for screen printing such as fabrics, and can also reduce the cost of manufacturing artificial marble.

The artificial marble of the present invention produced by the above method is cheaper than natural marble while giving the same feeling as natural marble. In addition, when using the tempered glass plate as in the preferred embodiment, it is possible to maintain the same strength in a thinner thickness to increase the space utilization of the place or product employing artificial marble, and durability is improved without fear of discoloration by ultraviolet rays Can be.

Claims (5)

Screen printing of one color of paint on one surface of the glass plate to form a printing layer, and the process of curing the printing layer is repeated a plurality of times while changing the color of the paint used, and the multicolored pattern of natural marble In the artificial marble manufacturing method to reproduce, After forming a printed layer by screen printing of the last time, the last time the printed layer is hardened by heating for 15 to 30 minutes at a temperature of 150 to 200 degrees Celsius. According to claim 1, The paint used for the screen printing, artificial marble manufacturing method, characterized in that the weight ratio of the solvent to the entire paint is 10 to 20%. According to claim 1, The paint used for the screen printing, the artificial marble manufacturing method characterized in that the viscosity is 10 to 200 g / ms. According to claim 1, A method of manufacturing artificial marble, characterized in that the reflector powder is added to the paint used for the screen printing. Artificial marble prepared by any one of claims 1 to 4.