KR20000073530A - The manufacturing method for a specially-coated marble - Google Patents

Abstract

PURPOSE: A manufacturing method of artificial marble is provided, which has pearl pattern with a good quality and improves brightness and durability by special coating. CONSTITUTION: The pearl-coated artificial marble is manufactured by the following steps: (i) coating a surface by pouring 95-99% of unsaturated polyester resin and 1-4% of transparent resin to a mold, followed by hardening at 65-70°C for 30min; (ii) special coating in case of marble ruby star by coating the transparent coated surface(step i) with a mixture of 0.5-1% of pearl, 80-82% of CaCO3 and 17.0-19.5% of polyester resin, in case of marble ceramics by coating the transparent coated surface(step i) with a mixture of 0.2-0.5% of resin selected from white or colored gels and CaCO3 resin; (iii) forming marble body by coating the coated surface(step ii) with a mixture of 75-80% of CaCO3, 17-19% of unsaturated polyester resin and 0.5-1% of pigment, followed by vibrating for removing bubbles and having a shape; (iv) forming the product by hardening at 65-75°C for 1hr.

Description

Manufacturing method of specially coated artificial marble {THE MANUFACTURING METHOD FOR A SPECIALLY-COATED MARBLE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the manufacture of a marble product comprising a marble rubista and a marble ceramic manufactured to form a natural pearl pattern and high-quality texture and greatly improve durability and gloss. .

Natural marble has been widely used in the past as a major building material, but its handling and processing is not easy and it has a relatively expensive disadvantage. Therefore, artificial marble has been produced and used early to meet the public's demand for marble used as a building material.

Artificial marble is used as a major building material today because it has the advantages of being able to form various colors and shapes, light weight, easy processing, and excellent durability and gloss compared with natural marble, As pottery, the demand is increasing.

The artificial marble includes generalized marble products, onyx products, and granite stone. The marble product is a product of a mixture of a marble resin and calcium carbonate (CaCO3). The onyx product is a product formed by mixing aluminum hydroxide with a transparent resin and an onyx resin. It is a product that shows the texture of natural stone by adding patterned stone powder chips.

Conventional marble products are strong but heavy and have a risk of breakage, and only the surface is colored, so that the back and the interior have no sense of unity in color and texture and have poor transparency; Onyx products are complementary to the shortcomings of the marble product, and the transparency, texture, color, etc. have been improved, but aluminum hydroxide used as stone powder causes the price of the marble product to be more than doubled, and for a long time It has a disadvantage of discoloration and repairing.

Specially coated marble product, which is a kind of synthetic resin artificial marble according to the present invention, is a completely new marble product developed to compensate for the shortcomings of the general marble product and onyx product. Marble ruby star, which makes the marble product according to the present invention exhibit a natural ruby form by coating with a pearl pattern; and a white pigment when mixing the marble body to improve gloss and durability. Alternatively, by adding pigments selected from pigmented pigments, high-quality textures are applied, and the surface is treated with special ceramic coatings, which combines the advantages of ceramics with marble products to preserve high gloss for a long time and have excellent surface damage. The goal is to provide a product called marble ceramic.

1 is a process diagram according to an embodiment of the present invention.

Figure 2 is a surface view of a marble product according to the present invention.

3 is a cross-sectional view of a marble product according to the present invention.

* Explanation of symbols for the main parts of the drawings

1: Marble body

2: Special coating layer

3: transparent coating layer

In order to achieve the above object, the present invention comprises the steps of coating the surface; Mixing a resin for marble, calcium carbonate (CaCO 3), and a pigment to apply, vibrate, and harden the surface to form a marble body; In the manufacturing method of the marble product (marble) consisting of the step of curing the product at high temperature, after the initial surface coating step of marble synthetic marble-based marble (marble), characterized in that a special coating is added, and the like Provided is a method of manufacturing a marble ceramic.

Hereinafter, the present invention will be described in more detail according to each process. However, the transparent gel coat resin, colored gel coat resin and the like used in the present invention include those commonly used in the art, and% is defined as weight percent.

1st process

Surface coating process

In order to form a surface layer for a marble product, 95-99% of a liquid unsaturated polyester resin and 1-4% of a transparent gel coat resin were added to a mold and cured at a temperature of 65-70 ° C for about 30 minutes.

2nd process

Surface Special Coating Process

In manufacturing Mablu Vista products, as a step of forming a silver pearl coating layer, a surface layer coated with a transparent mixture of 0.5-1% silver powder, 80-82% stone powder, and 17.0-19.5% unsaturated polyester resin in the first step Transparent coating on In preparing a marble ceramic product, a mixture of 0.2-0.5% of a transparent gel coat resin, 0.2-0.5% of a resin selected from a white or colored gel resin, and a powder of stone powder is coated on a transparent coating surface layer in the first step.

3rd process

Marble body forming step

As a step of forming a marble body, 75-80% of stone powder, 17-19% of unsaturated polyester resin, and 0.5-1% of pigment are mixed and coated on the coating surface according to the second process and vibrated. The vibration is to spread the applied mixed resin evenly, to remove bubbles formed in the mixed resin, and to make the marble body have a certain shape. The pigments include pigments commonly used.

4th process

Product completion stage

The product according to the third step is cured at a temperature of 65-75 ° C. for 1 hour to form a product and then demolded to complete the present invention.

Hereinafter, the present invention will be described in more detail with reference to Examples and Experimental Examples. The following examples should not be construed as limiting the scope of the invention, but of course, ordinary changes can be made by those skilled in the art within the scope of the invention.

Example 1

Preparation of Marble Ruvista

99% of the liquid unsaturated polyester resin and 1% of the transparent gel coat resin were added to the mold and cured at a temperature of 65 ° C. for about 30 minutes, followed by 1% of silver powder pearl, 82% of calcium powder (CaCO3), and 17% of unsaturated polyester resin. The mixture containing% was transparently coated on the transparent coated surface layer. 80% of stone powder (CaCO3), 19% of unsaturated polyester resin and 1% of pigment are mixed and applied on the mixture, and then vibrated and cured at 65 ° C. for 1 hour to form a product and then demolded. Complete the star.

Preferred raw material composition ratio in the Ma Blue Vista produced according to the present invention is shown in Table 1.

Table 1

division Clear gel coat resin Silver pearl Unsaturated Polyester Resin Stone powder (CaCO3) Pigment content(%) 2.90 0.70 22.20 73.50 Balance

Example 2

Manufacture of Marble Ceramics

A marble ceramic was obtained in the same manner as in Example 1 except for mixing and coating 0.5% of a transparent resin and 0.5% of a colored coating resin including white instead of silver powder pearl coating.

The preferred raw material composition ratio in the marble ceramic prepared according to the present invention is shown in Table 2 below.

Table 2

division Clear gel coat resin Colored gel coat resin Unsaturated Polyester Resin Stone powder (CaCO3) Pigment content(%) 2.90 0.70 24.60 71.10 Balance

Experimental Example 1

Deformation, water resistance, etc. were measured by the method of KS F 4806-97 for a bath (170 × 75 mm) manufactured using a marble rubista according to Example 1, and the results are shown in Table 3. .

Table 3

division Test Items unit result How to use Deformation Measurement at Full Water Top edge Long edge (left) Upper edge Long side (right) Upper edge Short side (left) Upper edge Short side (right) Mmmmmmmm 0.81.11.01.10.9 KS F 4806-97 Impact test Sandbag Clapper Falling Ball Impact Resistance No abnormality No abnormality No abnormality No abnormality Pollution resistance % 99.0 Bacol Hardness 60

Experimental Example 2

The bath (170 × 75 mm) manufactured using a marble ceramic according to Example 2 was measured by deformation of KS F 4806-97, and water resistance was measured. The results are shown in Table 4 below.

Table 4

division Test Items unit result Test Methods Deformation Measurement at Full Water Top edge Long edge (left) Upper edge Long side (right) Upper edge Short side (left) Upper edge Short side (right) Mmmmmmmm 0.60.90.81.00.9 KS F 4806-97 Impact test Sandbag Clapper Falling Ball Impact Resistance No abnormality No abnormality No abnormality No abnormality Pollution resistance % 98.6 Bacol Hardness 55

Experimental Example 3

The color change was measured in the bath resistance test for the bath (170 × 75 mm) manufactured using the marble rubista according to Example 1, and the results are shown in Table 5. Color change was measured using a CIE XYZ (Yxy) colorimeter and a CIE L * a * b * colorimeter after heating the bath filled with water at least 80% of the total volume for about 8hr / 1 day every cycle. It was.

Table 5

division CIE XYZ (Yxy) Colorimeter CIE L * a * b * colorimeter Measures Measures Before experiment Y 70.07 x .3107 y.3163 L 87.05 a + 0.27 b + 0.13 1 cycle Y 69.37 x .3102 y.3159 L 87.31 a + 0.36 b-0.02 2 cycles Y 69.60 x .3107 y.3162 L 86.92 a + 0.31 b + 0.11 3 cycles Y 69.11 x .3108 y.3163 L 85.28 a + 0.37 b + 0.13 4 cycles Y 69.93 x .3106 y.3161 L 87.04 a + 0.27 b + 0.05 5 cycles Y 70.57 x .3102 y.3159 L 87.27 a + 0.26 b-0.10 6 cycles Y 69.06 x .3100 y.3164 L 86.48 a + 0.23 b + 0.21 7 cycles Y 69.21 x .3103 y.3159 L 87.18 a + 0.19 b-0.03 8 cycles Y 69.23 x .3103 y.3161 L 86.38 a + 0.20 b + 0.03

Experimental Example 4

In the bath resistance test for a bath (170 × 75 mm) manufactured using a marble ceramic according to Example 2, the color change was measured and the results are shown in Table 6. Color change was measured using a CIE XYZ (Yxy) colorimeter and a CIE L * a * b * colorimeter after heating the bath filled with water at least 80% of the total volume for about 8hr / 1 day every cycle. It was.

Table 6

division CIE XYZ (Yxy) Colorimeter CIE L * a * b * colorimeter Measures Measures Before experiment Y 76.94 x .3107 y.3183 L 90.28 a-0.67 b + 0.89 1 cycle Y 77.87 x .3105 y.3182 L 90.71 a-0.77 b + 0.83 2 cycles Y 77.34 x .3104 y.3181 L 90.51 a-0.74 b + 0.76 3 cycles Y 78.15 x .3103 y.3180 L 90.85 a-0.74 b + 0.69 4 cycles Y 78.25 x .3103 y.3179 L 90.90 a-0.76 b + 0.66 5 cycles Y 77.99 x .3103 y.3181 L 90.77 a-0.79 b + 0.75 6 cycles Y 77.15 x .3106 y.3184 L 90.38 a-0.79 b + 0.88 7 cycles Y 76.96 x .3106 y.3184 L 90.35 a-0.84 b + 0.87 8 cycles Y 74.35 x .3105 y.3184 L 89.05 a-0.86 b + 0.85

The marble product of the present invention completed by the above process constitutes a ruby form of natural and luxurious pearl pattern, and the existing marble product in terms of product appearance, physical and chemical properties such as texture and color of the product. Compared to other products, it is an excellent material that is only 60% of conventional Onyx products in terms of production price. Therefore, as can be seen from the above examples and experimental examples, the marble product according to the present invention is particularly suitable for use in bathtubs, sinks, and the like.

Claims (3)

A marble product prepared by mixing a transparent gel coat resin and an unsaturated polyester resin and forming a main body mixed with stone powder and an unsaturated polyester, the method comprising: coating the surface after coating again Method of manufacturing a marble product. The method of claim 1, wherein the re-coating step comprises 0.5-1% silver powder, 80-82% stone powder (CaCO3), unsaturated polyester resin 17.0-19.5, to give a natural, high-grade ruby in a pearl pattern on the surface. A method of manufacturing a marble rubista comprising the step of coating with a mixture containing a blend. The method of claim 1, wherein the re-coating step is performed by coating the surface with 0.2-0.5% of a transparent resin, 0.2-0.5% of a resin selected from white or colored resins, 80-82% of fine powder (CaCO3), and unsaturated polyester resins 17.0-19.5. A method of manufacturing a marble ceramic comprising the step of coating the mixture with a blended%.