Method and device for manufacturing artificial marble having stripe pattern

Patent metadata

Field	Value
Publication number	US-12128588-B2
Application number	US-202318117758-A
Country	US
Kind code	B2
Filing date	Mar 6, 2023
Priority date	Jan 22, 2018
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

The present invention relates to a method and device for manufacturing artificial marble. According to the present invention, artificial marble having a stripe pattern similar to that of natural stone, such as striato, may be provided.

First claim

What is claimed is:

1. A method for manufacturing artificial marble having a stripe pattern, comprising:
providing a plurality of slurries with different colors into a molding box partitioned to have a predetermined height on a belt moving in a first direction; and
compressing and discharging a part of the slurry mixture contained in the molding box at a predetermined height at a lower portion of the molding box at a side of the molding box in the first direction using a roller spaced a predetermined distance from the belt in a vertical direction,
wherein the predetermined height of the molding box is greater than the predetermined distance of the roller from the belt in the vertical direction, and
wherein a surface of the slurry contained in the molding box has the stripe pattern based on a downflow and an upflow of the slurry.

2. The method of claim 1 , wherein the molding box comprises the roller at a side in the first direction, and the roller is rotated in the first direction.

3. The method of claim 2 , which is performed to create a flow of slurries descending along a second direction sidewall by the second direction sidewall of the molding box and the belt moving in the first direction, and
which is performed to create an ascending flow of a part of slurries that are not discharged from the lower portion of the molding box at the first side by the roller which is spaced a predetermined distance apart from the belt and forms a first direction sidewall of the molding box.

4. The method of claim 1 , wherein a slurry supply rate and a belt moving rate are controlled so that a height of the slurry mixture contained in the molding box, is greater than the distance between the roller and the belt, which are spaced apart in the vertical direction.

5. The method of claim 1 , wherein the plurality of slurries with different colors are provided into the molding box parallel to the first direction by means of a plurality of nozzles disposed across the first direction.

6. The method of claim 5 , further comprising:
adding two or more types of slurries with different colors to a line mixer having two or more inlets and one outlet, and distributing the slurries partially mixed in the line mixer to be provided to the plurality of nozzles.

7. The method of claim 1 , wherein one or more slurries of the plurality of slurries provided into the molding box have a viscosity of 10 Ps to 100 Ps.

8. The method of claim 7 , wherein one or more slurries of the plurality of slurries provided into the molding box include an acrylic resin, an unsaturated polyester-based resin or an epoxy-based resin.

9. The method of claim 8 , wherein one or more slurries of the plurality of slurries provided into the molding box further include a crosslinking agent, a curing agent, an inorganic filler or a chip.

10. The method of claim 1 , further comprising:
curing a flat slurry mixture discharged from the molding box and having the stripe pattern.

Assignees

• Lg Hausys Ltd

Inventors

• Lim Jung Min
• Ha Jake
• An Thae Hoon
• Kwak Jin Seok

Classifications

• B29B7/325 Primary

  Static mixers (in general B01F25/42) · CPC title

• B29C31/10

  of several materials · CPC title

• B29K2995/0021

  Multi-coloured · CPC title

• B29K2633/08

  Polymers of acrylic acid esters, e.g. PMA, i.e. polymethylacrylate · CPC title

• B29K2067/00

  Use of polyesters {or derivatives thereof}, as moulding material · CPC title