JPH0347164B2 - - Google Patents

Description

[Detailed description of the invention]

[Technical Field] The present invention relates to a method for manufacturing artificial marble having a three-dimensional flow pattern. [Background Art] Conventionally, in manufacturing artificial marble, as shown in FIG. 4, after pouring a base resin composition 2 colored white or the like into a container 1, this base resin composition is An appropriate amount of the patterned resin composition 3 colored in a color different from the base resin composition 2, such as red or black, is dispersed in the object 2 (Fig. 4a), and then this object is molded. It was manufactured by casting into a mold 4 and curing it (Fig. 4b,
c). However, this method has the disadvantage that the veins of the artificial marble cannot be made to appear in multiple layers in the thickness direction, resulting in a monotonous pattern. [Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to provide a method for manufacturing artificial marble that can exhibit a deep flowing pattern. [Disclosure of the invention] That is, the method for manufacturing artificial marble of the present invention includes:
After pouring the base resin composition 2 into the container 1, a plurality of handle-attaching resin compositions 3 are applied in stripes on top of the base resin composition 2, and then the base resin composition 3 is applied on top of the base resin composition 2. While pouring in item 2 again,
Resin composition 3 for patterning on top of resin composition 2 for base
The resin compositions 2 and 3 in the container 1 are then poured into a mold 4 and cured.The resin composition 2 for the base and the resin composition 3 for the handle are The above object was achieved by casting and curing the multi-layered structure. The present invention will be described in detail below based on illustrated embodiments. As the base resin composition 2, for example, those having the formulations shown in Table 1 can be used.

Use a transparent table.
The base resin composition 2 needs to have a light color tone and transparency as in the above formulation. In addition, the viscosity of the base resin composition 2 is determined in order to create a pattern.
500 to 5000 poise is preferred. As shown in FIG. 1, the base resin composition 2 with the above formulation is poured into a container 1 without a top lid, and then the base resin composition 2 is poured onto the base resin composition 2 in a color different from that of the base resin composition 2. The colored resin compositions 3A and 3B for patterning are applied in a plurality of stripes using a spatula or the like. This patterned resin composition 3A,
As the formulation of 3B, for example, those shown in Table 2 below can be used.

[Table] Resin compositions 3A and 3B for patterning are both based on resin composition 2 for base with appropriate colors such as red, blue, and black.
are colored differently. Next, as shown in FIG. 1b, after pouring the base resin composition 2 again onto the resin compositions 2 and 3, the base resin composition 2
A plurality of resin compositions 3 for handles are applied in a striped manner on the upper surface, and then the plural layers of resin compositions 2 for bases and resin compositions 3 for handles are poured into a mold 4 in a laminated state. . At that time, as shown in FIG. 2, the mold 4 or the container 1 is moved in the direction of the streaks of the resin composition 3 for handle, and the resin compositions 2 and 3 are cast onto the mold 4. Further, as shown in FIG. 3, the resin compositions 2 and 3 are placed on the mold 4 so that the direction of the handles is alternately reversed, such as from one side of the mold 4 to the other and from the other side to one side. It should be run 2 to 5 times. Next, the base resin composition 2 is applied to the mold 4 by heating or natural curing.
Then, the patterned resin composition 3 is cured and then released from the mold to obtain an artificial marble. In this way, a plurality of layers of the base resin composition 2 and the handle resin composition 3 are applied in stripes on top of the base resin composition 2 are laminated in the container 1, and the handle resin is poured onto the mold 4. Composition 3 is cured in a state in which a plurality of upper and lower stages are formed, thereby making it possible to obtain deep artificial marble. Furthermore, by alternately flowing the resin compositions 2 and 3 in the container 1 into the mold 4 in opposite directions, the density and thickness of the pattern attached to both ends of the mold 4 can be made approximately uniform. This makes it possible to prevent differences in coloring, especially at the ends of the mold 4. This is because if the resin compositions 2 and 3 were poured into the mold 4 from only one direction, the darkness and thickness of the pattern would be different at the beginning and end of the patterning process, especially the length of the artificial marble ( The longer the length (length in the patterning direction), the more significant the problem becomes, but by pouring the resin compositions 2 and 3 into the mold 4 so that the patterning directions are alternately opposite as described above, the molding There is no difference in the thickness or density of one end of the mold 4 compared to the other end. [Effects of the Invention] As described above, the present invention involves pouring a base resin composition into a container, and then applying a plurality of handle-forming resin compositions in streaks on top of the base-forming resin composition. ,
Next, the resin composition for the base is again poured on top of this, and the resin composition for the handle is applied in streaks on the resin composition for the base, and then each resin composition in the container is poured into the mold and cured. Therefore, the resin composition for patterning is cured in a state where it is formed in a plurality of vertically striated stripes, making it possible to produce an artificial marble with a three-dimensional effect. In addition, by dividing the pattern attachment process into 2 to 5 times and applying the pattern from opposite directions alternately, there is no difference in the shade or thickness of the pattern at both ends in the pattern attachment direction, and the quality of the artificial marble is improved. It is something that can be improved.

[Brief explanation of drawings]

FIGS. 1a and 1b are explanatory diagrams showing the manufacturing method of one embodiment of the present invention, FIG. 2 is an explanatory diagram of the same, and FIG.
The figure is a top view showing a state in which the resin composition is poured into the same mold as above, and FIGS. 4a, 4b, and 4c are explanatory views of conventional examples, respectively. 1 is a container, 2 is a base resin composition, 3 is a handle resin composition, and 4 is a mold.

Claims (1)

[Scope of Claims] 1. After pouring a base resin composition into a container, a plurality of handle-forming resin compositions are applied in stripes on top of the base resin composition, and then a base resin composition is applied on top of the base resin composition. The resin composition for the handle is poured again, and the resin composition for the handle is applied in streaks on the resin composition for the base, and then each resin composition in the container is poured into the mold and cured. Method of manufacturing artificial marble. 2. Claims characterized in that the resin composition for handle is poured into the mold from one side to the other and from the other side to one side so that the handle direction of the resin composition for handle is alternately reversed. The method for producing artificial marble according to item 1.