KR100562634B1 - Artificial marble using striped chip and method for preparing the same - Google Patents

Abstract

The present invention is an artificial marble using a chip having a stripe shape among the chips applied to artificial marble, specifically, a stripe chip having two or more different colors in one chip and having a stripe distinguished by a straight or curved boundary between the colors; It relates to a manufacturing method thereof.

In the present invention, by applying a chip having a new pattern to the artificial marble in addition to the existing monochromatic chip, it is possible to diversify the appearance form such as the pattern and color of the artificial marble from the existing monotonous appearance.

Artificial Marble, Striped Chip

Description

Artificial marble using striped chip and method for preparing the same

1 is a perspective view of a striped chip according to an embodiment of the present invention.

2 is a perspective view of a striped chip according to another embodiment of the present invention.

3 is a cross-sectional view of the artificial marble having a continuous stripe is applied to the stripe chip according to the present invention.

Figure 4 is a cross-sectional view of the artificial marble having a striped chip is applied to the striped chip according to the present invention.

The present invention relates to an artificial marble prepared using a chip having a stripe of various colors made of an acrylic resin or an unsaturated polyester resin as a base resin, and more particularly, to an existing acrylic or unsaturated polyester-based artificial In addition to the shape and pattern of the chip used for marble, a chip having a new pattern (stripes of various colors) may be added to diversify the pattern of the artificial marble, and the artificial marble having a more three-dimensional effect and a manufacturing method thereof.

Artificial marble is a synthetic synthetic material that combines natural stone powder and minerals with resin components (acrylic, unsaturated polyester, epoxy, etc.) and cement, and adds various pigments and additives to realize the texture of natural stone. Artificial marble, unsaturated polyester artificial marble, etc. are mentioned.

The acrylic artificial marble and the unsaturated polyester artificial marble have unique strength and color tone of a solid material, and in particular, the acrylic artificial marble has excellent processability and weather resistance. Acrylic artificial marble is lighter and more non-porous than natural marble, has an elegant hue that is inferior to natural marble, excellent strength and weather resistance, and can be distinguished from natural marble because of its excellent workability comparable to wood.

On the other hand, unsaturated polyester artificial marble has a disadvantage in that weatherability and heat resistance are worse than acrylic artificial marble and are difficult to thermoform.However, since the refractive index is similar to that of aluminum hydroxide, which is used as a filler, the transparency of the polymer is more natural and deeper. There is an advantage that can realize a sense of appearance. Such artificial marble is recently used in various applications such as various top plate materials, dressing tables, wash basins, tables, wall materials, flooring materials, furniture, interior materials, indirect lighting panels, interior accessories.

Pigments and chips are mostly used as raw materials that represent the color and shape of artificial marble, and the components of the chips are manufactured using the same or different raw materials as artificial marble, and have various colors and particle sizes. The existing chip is mainly a monochromatic chip, and its size is from differential to 2.5 mesh. However, even if they use different kinds of chips for each color and vary the size, they show a lot of difference from the pattern of natural marble. That is, due to the heterogeneous color difference between the base color of the artificial marble and the monochromatic chip, there is a limit in expressing the texture of natural color.

The present inventors have developed the shape of a chip having two or more stripes and used it in the manufacture of artificial marble to express an image closer to natural stone.

Accordingly, an object of the present invention is to provide an artificial marble exhibiting a texture closer to natural stone and a method of manufacturing the same by using a chip having a stripe of a new shape in addition to the chip used in the existing artificial marble.

In order to achieve the above object, the present invention provides an artificial marble manufactured using a stripe chip having two or more different colors and having stripes that are distinguished by an interface between each color.

The two or more different colors preferably have a color difference value of 0.9 or more as a color difference ΔE according to the Commission International de l'Eclairage (CIE) tonality system so that the colors may be distinctly distinguished from each other. In the present invention, if ΔE is less than 0.9, it is divided into the same color (the same color), and if ΔE is more than 0.9, it is divided into different colors (dicolor).

The stripe chip comprises one or more stripes having a background color and a color distinct therefrom. At this time, the appropriate width of the stripe is about 0.1 to 10 mm, for example, if there is a narrow stripe on the ground, or if the width of the stripe is not distinguished from the ground can be made only of a similar width stripe without the ground. If the stripe width is too small, the stripe effect cannot be expected. If the stripe width is too large, when the chip is later crushed and manufactured into chips, only the large width of the chip appears and the stripe itself may disappear.

In addition, the stripes may be continuous or discontinuous straight lines or curves in cross section, and when two or more stripes are present, each of the stripes may be parallel or partially overlapped. Suitable sizes of striped chips are 100-2.5 Mesh (0.14-9.1 mm).

If the size of the stripe chip is larger than 2.5 Mesh, it is difficult to use because it is too large, because the product is usually made with a plate of 14 mm thickness, which causes problems in thickness and cracks between the chip and the base. This is because there is a risk of being caught in the impeller of the arrangement. It also affects the flow of raw materials. For this reason, chips larger than 2.5 mesh cannot be used.

Even chips smaller than 2.5 mesh are better to use than small chips in many ways, but large chips are better for product pattern. Therefore, it is preferable to use a mixture of them in the manufacture of artificial marble after the production of striped chips by various sizes, for example, 2.5 to 3.5 Mesh, 3.5 to 6 Mesh, 6 to 10 Mesh, 10 to 16 Mesh, 16 to 30 Mesh, 30 to 40 Mesh, 40 to 100 After the selective screening can be used to mix them during artificial marble molding.

In the present invention, the background color refers to a color that occupies the largest portion of the chip, and the thickness of the stripe is thickened on the cross section of the chip so that the background color disappears and thus the stripe and the stripe may directly form an interface.

In the present invention, the term "continuous" means that the stripe continues continuously or lasts from the end of the chip to the end of the chip in the cross section of the chip, and the term "discontinuity" means that the stripe is cut in the middle but the remaining portion is continuous except for the broken part. Say that.

In the present invention, the parallel means that two or more stripes present in the background color do not meet each other in the chip, and the overlap means that the two stripes meet each other on the cross-section of the chip and overlap or cross each other.

The artificial marble of the present invention is 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, 0.1 to 10 parts by weight of polymerization initiator based on 100 parts by weight of at least one resin syrup selected from acrylic, unsaturated polyester and epoxy resins. It is made of a raw material composition containing 5 to 40 parts by weight of the striped chip.

The stripe chip includes 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, and 0.1 to 10 parts by weight of polymerization initiator based on 100 parts by weight of at least one resin syrup selected from acrylic, unsaturated polyester and epoxy resins. It is manufactured from a raw material composition.

The color of the stripe chip is implemented using an organic or inorganic pigment or dye, or using a monochromatic chip having a size of 30 Mesh (0.535 mm) or less.

The artificial marble of the present invention is 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, and polymerization initiator 0.1 to 100 parts by weight of at least one resin syrup selected from acrylic, unsaturated polyester, and epoxy, in addition to striped chips. The monochromatic chip made of a slurry containing 10 parts by weight to 4 parts by weight may further include 4 to 40 parts by weight based on 100 parts by weight of at least one resin syrup selected from acrylic, unsaturated polyester, and epoxy.

In addition, the present invention includes 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, and 0.1 to 10 parts by weight of polymerization initiator based on 100 parts by weight of at least one resin syrup selected from acrylic, unsaturated polyester and epoxy resins. Preparing a base slurry of stripe chips; Preparing a striped slurry or a monochromatic chip having the same composition as the base slurry but adding 0.01 to 10 parts by weight of a pigment; Spraying and curing one or more stripe slurry or monochromatic chips using a nozzle to the base slurry, and then crushing the base slurry to prepare a stripe chip having a size of 100 to 2.5 Mesh (0.14 to 9.1 mm); 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, 0.1 to 10 parts by weight of polymerization initiator, 5 to 40 stripe chips based on 100 parts by weight of at least one resin syrup selected from acrylic, unsaturated polyester and epoxy resins It provides a method for producing artificial marble comprising the step of curing the weight part in the mold.

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

1 is an embodiment of a stripe chip shape according to the present invention. As shown in the figure, the stripe chip of the present invention has two or more colors, and the pattern is formed in a stripe shape. In the case of Figure 1 is a chip consisting of only three stripes each having a different color of a, b, c without distinguishing the background color. In this case, as shown in (a) of FIG. 1, stripes having the same width may be continuously extended in parallel to form a stripe chip. However, as shown in (b) of FIG. 1, the widths of the stripes may be different from each other and may not be parallel to each other. have.

At this time, the colors of a, b, and c are different colors in which ΔE of the CIE toning system is one or more. The colorimetric system developed by the Commission International de l'Eclairage or International Commission on Illumination (CIE) is a colorimetric system that quantifies color and displays it numerically. The CIE colorimeter was first developed in 1931 and standardized information about light sources and observers and quantified the colors observed by standard observers in standard light sources.

In the present invention, for example, the standard color difference CIE L * a * b recommended by the CIE in 1976 may be used as in the following equation.

ΔE * ab = [(△ L *) ² + (△ a *) ² + (△ b *) ² ] ^½

Here, ΔE is the color difference, and ΔL *, Δa *, and Δb * represent lightness differences between two samples according to the CIE Lab formula, respectively.

The ΔE value can be measured by color measuring instruments such as Tristimulus Colorimeter, Spectroradiometer and Spectrophotometer.

2 is a perspective view of a stripe chip according to another embodiment of the present invention, the stripe of the stripe chip may be similar to the width of each stripe as shown in Figure 1, it may be formed as a thin line drawn on one ground. A, b, and c of FIG. 2 each represent a different color, where the c color is based and the relatively narrow a and b colors form a stripe.

When such a striped chip is used as a chip in the manufacture of artificial marble, its cross section appears on the surface of the artificial marble, and the stripe has a continuous straight or curved shape as shown in FIG. It may be lost or in a straight line.

Referring to the manufacturing process of artificial marble using a striped chip according to the present invention.

First, striped chips are manufactured.

In the present invention, the stripe chip is a chip made by curing after forming the stripe through the process of forming a stripe in the slurry using a slurry containing an unsaturated polyester resin syrup, an inorganic filler, a crosslinking agent, a polymerization initiator as a raw material composition, It is a chip made by hardening after forming streaks through the process of forming streaks in this slurry using the slurry containing an acrylic resin syrup, an inorganic filler, a crosslinking agent, and a polymerization initiator as a raw material composition.

Specifically, the stripe chip is an acrylic resin in a base slurry containing 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, and 0.1 to 10 parts by weight of polymerization initiator, based on 100 parts by weight of acrylic resin syrup or unsaturated polyester resin syrup. 100 to 200 parts by weight of a syrup or an unsaturated polyester resin syrup, 100 to 200 parts by weight of an inorganic filler, 0.1 to 10 parts by weight of a crosslinking agent, and 0.1 to 10 parts by weight of a polymerization initiator, by spraying a stripe slurry to form and harden the stripes to 100 to 100 Manufactured by crushing to 2.5 Mesh size.

Looking specifically at the formation of the streaks, by spraying the slurry to be used as a stripe into the base slurry through a nozzle at a predetermined interval, to make a marble plate having a predetermined interval of stripes, and then cured in an oven using a crusher 100 to A stripe chip is manufactured by crushing to a diameter of 2.5 mesh. In the present invention, the size of the stripe chip is produced in various sizes within the range of 100 to 2.5 Mesh, and selected by size using a mesh network.

When acrylic resin syrup is used as a raw material, the color becomes turbid, but the distinction of color is apparent, so that a clear and colorful pattern can be expressed, and when the unsaturated polyester is used as a raw material, the color of the unsaturated polyester is inherent in transparency. It has a shining effect, and when used as a chip of artificial marble, the three-dimensional feeling is more excellent than when using a monochromatic unsaturated polyester chip.

The color of the stripe chip can be represented in various ways for each stripe, organic or inorganic pigments or dyes can be used to represent the color, and also the size of 30 mesh or less based on acrylic resin syrup or unsaturated polyester resin as a base material Chips can also be used.

In particular, in the case where the striped chip uses unsaturated polyester resin as its raw material, when a chip having a size of 30 Mesh or less is used as a means for making the color of the striped, the effect of further increasing the three-dimensional effect can be obtained.

Next, the artificial marble is manufactured using striped chips.

Looking at the manufacturing process of the artificial marble according to the present invention in detail, 100 parts by weight of acrylic, unsaturated polyester or epoxy resin syrup, 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, 0.1 to 10 weight of polymerization initiator Artificial marble slurry is prepared by mixing 5 to 40 parts by weight of the part and stripe chips, which is poured into a molding mold and placed in a hot air oven to cure. After curing is completed, the upper and lower surfaces are polished to a certain thickness to prepare artificial marble having a natural stone texture. Make.

Unsaturated polyesters usable in the present invention are not particularly limited, and any general unsaturated polyester may be used. For example, α, β-unsaturated dibasic acids or a mixture of diunsaturated dibasic acids and saturated dibasic acids are mixed in a ratio of 0.8 to 1,2 as the molar ratio of polyhydric alcohols and alcoholic hydroxyl groups / carboxyl groups, and carbon dioxide gas, nitrogen Condensation reaction at a temperature of 140 to 250 ℃ in an inert gas stream such as gas, and the acid value obtained by the method of gradually raising the temperature depending on the progress of the reaction while removing the generated water, the range of about 5 to 40, molecular weight 1,000 to 5,000 Unsaturated polyester which has can be used.

The α, β-unsaturated dibasic acid and saturated dibasic acid used herein include maleic anhydride, citraconic acid, fumaric acid, itaconic acid, phthalic acid, and phthalic acid. Phthalic acid, isophthalic acid, terephthalic acid, terephthalic acid, succinic acid, adipic acid, sebacic acid, tetrahydrophthalic acid, and the like.

If necessary, polybasic acids such as monobasic acids such as acrylic acid, propionic acid and benzoic acid, and trimellitic acid and tetracarboxylic acid of benzol can also be used.

Examples of the polyhydric alcohols include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, 1,3-butylene glycol, hydrogenated bisphenol A, trimethylolpropane monoaryl ether, and neopentyl. Glycol, 2,2,4-trimethyl-1,3-pentanediol, glycerin and the like can be used.

Acrylic monomers may be used as the polymerizable monomer of the acrylic resin syrup used in the preparation of artificial marble. Specifically, the acrylic resin syrup is a methacrylate monomer selected from methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, benzyl methacrylate and glycidyl methacrylate alone or It is also a mixture of two or more kinds, and a mixture of a polymer in which a methacrylate monomer and a portion thereof are polymerized may be used. Of these, methyl methacrylate is particularly preferred. The content of the polymer in the syrup is preferably 10 to 50% by weight.

The crosslinking agent used in the present invention is a polyfunctional acrylic monomer which crosslinks with the acrylic resin syrup including an intramolecular copolymerizable double bond, and is ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimetha Single or a mixture of two or more selected from methacrylate, tetraethylene glycol dimethacrylate, 1,6-hexane diol dimethacrylate, polybutylene glycol dimethacrylate and neopentyl glycol dimethacrylate, these Ethylene glycol dimethacrylate is especially preferable.

If the crosslinking agents are not used or are used too little, unevenness of the surface is generated, bubbles are generated in the upper and lower portions of the artificial marble, and thus the bonding strength between the raw materials is reduced, and the heat resistance and heat discoloration resistance are deteriorated. If too much crosslinking agent is used, phase separation of chips occurs, which causes many problems in artificial marble pattern. Therefore, the amount of the crosslinking agent is preferably 0.1 to 10 parts by weight based on 100 parts by weight of the acrylic resin syrup.

The inorganic filler used in the present invention is aluminum hydroxide, magnesium hydroxide, calcium aluminate, etc., the refractive index is preferably 1.57 to 1.62, can be used alone or in combination of two or more. The inorganic filler preferably has a surface treated with a silane coupling agent, titanate coupling agent or stearic acid for dispersibility with the resin, improvement of mechanical strength of the product and prevention of precipitation.

The preferred content of the inorganic filler is 100 to 200 parts by weight based on 100 parts by weight of the acrylic syrup.

The polymerization initiator used in the present invention serves as a curing agent, and as organic peroxide, benzoyl peroxide, diacyl peroxide such as dicumyl peroxide, butylhydro peroxide, hydroperoxide such as cumylhydro peroxide, t -Butyl peroxy maleic acid, t-butylhydro peroxide, acetyl peroxide, lauroyl peroxide, azobisisobutyronitrile, azobisdimethylvaleronitrile, t-butyl peroxy neodecanoate ( Neodecanoate), t-amyl peroxy 2-ethyl hexanoate, or a mixture of two or more thereof. In addition, a mixture of peroxides and sulfonic acids of amines or mixtures of peroxides and cobalt compounds can be used to allow polymerization and curing to be carried out at room temperature.

The content of the polymerization initiator is preferably 0.1 to 10 parts by weight based on 100 parts by weight of the acrylic resin syrup, and is generally used together with the polymerization accelerator.

Moreover, radical carriers, such as mercaptan compounds, such as a normal dodecyl mercaptan, a tertiary dodecyl mercaptan, a benzyl mercaptan, and a trimethyl benzyl mercaptan, can be used. The content of the radical carrier is preferably 0.1 to 5 parts by weight based on 100 parts by weight of the acrylic syrup.

In addition, the composition is conventionally known as an additive component of artificial marble, a silicone-based or non-silicone-based antifoaming agent; Silane-based, acid-based, or titanate-based coupling agents mainly composed of trimethoxysilane; Organic or inorganic pigments or dyes; Phenyl salicylate-based, benzophenone-based, benzotriazole-based, nickel derivative-based or radical scavenger-based ultraviolet absorbers; Halogen-based, phosphorus- or inorganic metal-based flame retardants; Stearic acid type or silicone type release agent; Catechol-based or hydroquinone-based polymerization inhibitors; It may further include one or more additives selected from phenolic, amine, quinone, sulfur or phosphorus antioxidants.

Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited to this.

Example 1

1. Manufacturing of Striped Chips

1) Manufacture of raw materials

100 parts by weight of methyl methacrylate syrup consisting of a mixture of 30% by weight of polymethyl methacrylate and 70% by weight of methyl methacrylate, 180 parts by weight of aluminum hydroxide, 0.2 parts by weight of t-butyl peroxy neodecanoate, 0.3 parts by weight of t-amyl peroxy 2-ethyl hexanoate, 3 parts by weight of ethylene glycol dimethacrylate, 0.2 parts by weight of normaldodecyl mercaptan, 0.2 part by weight of BYK 555 (BYK-Chemie, Germany) as an antifoaming agent, 0.75 parts by weight of BYK 900 (BYK-Chemie, Germany) as a coupling agent and 0.2 parts by weight of Hisorp-P (LG Chem) as a UV stabilizer (absorption) were prepared to prepare a slurry to be used as a base material for flat plates. It was. In addition, by mixing 0.3 parts by weight of the pigment having the same composition as the base slurry to represent the color to prepare a slurry to be used as a stripe in two colors.

2) chip manufacturing

Two colored slurries are sprayed into the base slurry through nozzles at regular intervals to make a marble plate with stripes at regular intervals, and then cured in an oven at 80 ° C. It was crushed so as to prepare a striped chip of the form as shown in FIG.

Meanwhile, an organic or inorganic pigment was added to the base slurry, and only this was cured alone, followed by pulverization to prepare a monochromatic general chip.

2. Manufacture of artificial marble

100 parts by weight of methyl methacrylate syrup consisting of a mixture of 28% by weight of polymethyl methacrylate and 72% by weight of methyl methacrylate, 160 parts by weight of aluminum hydroxide, 0.2 parts by weight of t-butyl peroxy neodecanoate, 0.3 parts by weight of t-amyl peroxy 2-ethyl hexanoate, 3 parts by weight of ethylene glycol dimethacrylate, 0.2 parts by weight of normaldodecyl mercaptan, 0.2 part by weight of BYK 555 (BYK-Chemie, Germany) as an antifoaming agent, 0.75 parts by weight of BYK 900 (BYK-Chemie Co., Germany) as a coupling agent, 0.2 parts by weight of Hisorp-P (LG Chem.) As a UV stabilizer (absorption), 25 parts by weight of a monochromic chip prepared in advance, and 15 parts by weight of a striped chip The artificial marble slurry was prepared by mixing, poured into a 14 mm thick mold, and placed in an 80 ° C. hot air oven to cure. After curing was completed, the upper surface was polished to a thickness of 1 mm, the lower surface to 2 mm thickness to make artificial marble of natural stone texture.

Example 2

Manufactured in the same manner as in Example 1, 30 parts by weight of the striped chip, 10 parts by weight of the solid color solid chip was used in the manufacture of artificial marble.

In general, artificial marble made of acrylic resin is used in various applications as kitchen tops and various interior materials due to the advantages such as lightness, weather resistance and thermal properties as well as excellent processability. However, compared to natural marble, they could not express all kinds of patterns and colors. In particular, the pattern of the color that can be continued by a combination of chips consisting of a single color gives a monotonous feeling, there was a limit to the color and pattern of the common natural stone texture.

Therefore, the present invention improves this problem, and by using a stripe chip composed of two or more colors, it is possible to obtain an artificial marble having a remarkable appearance differentiation and realism of the existing artificial marble.

Claims (12)

delete It is manufactured by using a striped chip having two or more different colors and having stripes distinguished by the interface between each color. And wherein the two or more different colors have a color difference value of 0.9 or more as a color difference ΔE according to the Commission International de l'Eclairage (CIE) tonal system. 3. The artificial marble of claim 2 wherein the striped chip comprises one or more stripes having a background color and a color distinct therefrom. The artificial marble according to claim 3, wherein the stripe has a width of 0.1 to 10 mm. The artificial marble according to claim 3, wherein the stripes are straight or curved continuous or discontinuous in cross section. 4. The artificial marble of claim 3 wherein at least two stripes are parallel or partially overlapping. The artificial marble according to claim 2, wherein the stripe chip has a size of 100 to 2.5 Mesh (0.14 to 9.1 mm). The raw material of artificial marble is 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, and polymerization initiator based on 100 parts by weight of at least one resin syrup selected from acrylic, unsaturated polyester and epoxy. Artificial marble characterized in that it comprises 0.1 to 10 parts by weight, 5 to 40 parts by weight of the striped chip. The method of claim 8, wherein the raw material of the stripe chip is 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, and polymerization based on 100 parts by weight of at least one resin syrup selected from acrylic, unsaturated polyester and epoxy resins. Artificial marble comprising 0.1 to 10 parts by weight of the initiator. 10. The artificial marble according to claim 9, wherein the color of the striped chip is implemented using an organic or inorganic pigment or dye, or a monochromatic chip having a size of 30 Mesh (0.535 mm) or less. According to claim 8, 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, 0.1 to 10 parts by weight of polymerization initiator based on 100 parts by weight of at least one resin syrup selected from acrylic, unsaturated polyester and epoxy The artificial marble, characterized in that it further comprises 4 to 40 parts by weight based on 100 parts by weight of the at least one resin syrup selected from the group consisting of acrylic, unsaturated polyester and epoxy based slurry containing slurry. Base of the stripe chip comprising 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, and 0.1 to 10 parts by weight of polymerization initiator based on 100 parts by weight of at least one resin syrup selected from acrylic, unsaturated polyester and epoxy resins. Preparing a slurry; Preparing a striped slurry or a monochromatic chip having the same composition as the base slurry but adding 0.01 to 10 parts by weight of a pigment; Spraying and curing one or more stripe slurry or monochromatic chips using a nozzle to the base slurry, and then crushing the base slurry to prepare a stripe chip having a size of 100 to 2.5 Mesh (0.14 to 9.1 mm); And 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, 0.1 to 10 parts by weight of polymerization initiator, 5 to 40 stripe chips based on 100 parts by weight of at least one resin syrup selected from acrylic, unsaturated polyester and epoxy resins Putting the weight part into a mold to cure, The stripe chip has two or more different colors and has stripes that are distinguished by the interface between each color, and the two or more different colors are the color difference (ΔE) according to the Commission International de l'Eclairage (CIE) tonal system. A method for producing artificial marble, characterized in that it has a color difference value of 0.9 or more.

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