WO2009014393A1

WO2009014393A1 - Nacre pattern making method using laser

Info

Publication number: WO2009014393A1
Application number: PCT/KR2008/004343
Authority: WO
Inventors: Jun Hyeong Yang
Original assignee: Jun Hyeong Yang
Priority date: 2007-07-26
Filing date: 2008-07-24
Publication date: 2009-01-29
Also published as: KR100851606B1

Abstract

A nacre pattern forming method using laser is provided. The nacre pattern forming method using laser includes attaching a nacre base material plate on which a nacre pattern is to be formed to a surface of a substrate, forming a protective layer by coating a coating agent on the nacre base material, patterning by etching a region ranging from the protective layer to the inside of the nacre base material plate using a laser processor for emitting laser, filling an etched groove of the nacre base material plate formed by laser processing with a background material whose color is different from that of the nacre base material plate, and finishing a surface treatment by coating a finishing material on the surfaces of the substrate and the nacre base material plate.

Description

NACRE PATTERN MAKING METHOD USING LASER

Technical Field

[1] The present invention relates to a nacre pattern forming method using laser, and more particularly, to a nacre pattern forming method using laser that can form a pattern by three-dimensionally processing or cutting nacre attached to a product using laser. Background Art

[2] In general, nacre patterns are formed through an inlay technique. The inlay technique is used to form a pattern by attaching a bivalve shell lined with nacre to a base material surface of metal, porcelain, or wood to be carved into the pattern.

[3] However, since a nacre pattern forming method using the inlay technique involves forming a pattern through a manual operation by cutting nacre and individually attaching a plurality of separate nacre elements to the base material surface of metal, porcelain, or wood, the work is time-consuming and the pattern cannot be precisely formed.

[4] To address this problem, a method has been developed to form the pattern by precisely cutting the nacre using laser and attaching the cut nacre to the base material surface of metal, porcelain, or wood.

[5] A conventional nacre pattern forming method using laser is disclosed in Korean

Utility Model Publication No. 20-0296927.

[6] The conventional nacre pattern forming method using laser includes the steps of forming a pattern on a base material using the laser, cutting nacre to be attached to the base material in the same pattern as that formed on the base material using the laser, and attaching the cut nacre to the base material.

[7] Since the conventional nacre pattern forming method using the laser processes the base material and the nacre using the laser without any manual operation, a processing time may be shortened and a processing operation may be precisely performed.

[8] However, since the conventional nacre pattern forming method involves forming the pattern by cutting the nacre to be attached to the base material into the pattern to be formed using the laser and attaching the cut nacre to the base material, there is a problem in that the nacre may be broken in a process of attaching the nacre cut into the pattern to the base material.

[9] When multiple patterns are formed on the base material, a worker must manually attach the multiple patterns cut by the laser to the base material. Disclosure of Invention Technical Problem [10] The present invention is directed to a nacre pattern forming method using laser that may form a nacre pattern on a substrate with high precision in a short time. Technical Solution

[11] According to an exemplary embodiment of the present invention, a nacre pattern forming method using laser includes: attaching a nacre base material plate on which a nacre pattern is to be formed to a surface of a substrate; forming a protective layer by coating a coating agent on the nacre base material; patterning by etching a region ranging from the protective layer to the inside of the nacre base material plate using a laser processor for emitting laser; filling an etched groove of the nacre base material plate formed by laser processing with a background material whose color is different from that of the nacre base material plate; and finishing a surface treatment by coating a finishing material on the surfaces of the substrate and the nacre base material plate.

[12] Preferably, the attaching of the nacre base material plate includes: printing the nacre pattern on the surface of the substrate on which the nacre pattern is to be formed using a screen print method; and attaching the nacre base material plate to the substrate to cover the printed pattern.

[13] Preferably, the filling of the etched groove of the nacre base material plate includes: coating a black paint as the background material on the surfaces of the substrate and the nacre base material plate such that the etched groove formed by the laser processing is filled; and polishing by removing the black paint coated on the surface of the nacre base material plate such that the nacre base material plate is exposed, and wherein the finishing of the surface treatment includes: coating the coating agent on the surface of the substrate and the surface of the nacre base material plate from which the black paint has been removed; and smoothly polishing the surfaces of the substrate and the nacre base material plate after coating.

[14] Preferably, the filling of the etched groove of the nacre base material plate includes: coating a lacquer liquid as the background material on the surfaces of the substrate and the nacre base material plate such that the etched groove formed by the laser processing is filled; and polishing by removing the lacquer liquid coated on the surface of the nacre base material plate such that the nacre base material plate is exposed, and wherein the finishing of the surface treatment includes: brightening the surface of the substrate and the surface of the nacre base material plate from which the lacquer liquid has been removed using a brightener and drying the surfaces; and additionally lacquering by coating a raw lacquer mixed liquid on the surfaces of the substrate and the nacre base material plate using a cloth and drying the surfaces.

[15] Preferably, the lacquer liquid is a mixture of 30 percent by weight raw lacquer, 67 percent by weight soil, and 3 percent by weight water. [16] Preferably, the lacquer liquid is a mixture of 30 percent by weight raw lacquer, 67 percent by weight ceramic powder, and 3 percent by weight water.

Advantageous Effects

[17] The nacre base material is first attached to the substrate on which the nacre pattern is to be formed and then the pattern is formed on the nacre base material plate by the etching process using the laser, thereby addressing a problem in which a worker must manually attach patterned nacre to the substrate. Thus, products may be mass-produced in a short time.

Brief Description of the Drawings [18] Exemplary embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It should be understood that various aspects of the drawings may have been exaggerated for clarity: [19] FIG. 1 is a flowchart showing a work process of a nacre pattern forming method using laser according to an exemplary embodiment of the present invention; [20] FIG. 2 is a schematic diagram of a laser processor to be used at work in the nacre pattern forming method using laser of FIG. 1 ; [21] FIG. 3 is a block diagram showing a control structure of the laser processor of FIG.

2; [22] FIG. 4 shows a pattern printing step in the work process of the nacre pattern forming method using laser of FIG. 1 ; [23] FIG. 5 shows a nacre material plate attaching step in the work process of the nacre pattern forming method using laser of FIG. 1 ; [24] FIG. 6 is a cross-sectional view showing a protective layer forming step in the work process of the nacre pattern forming method using laser of FIG. 1; [25] FIG. 7 is a cross-sectional view showing a laser processing step in the work process of the nacre pattern forming method using laser of FIG. 1 ; [26] FIG. 8 is a cross-sectional view showing a filling step in the work process of the nacre pattern forming method using laser of FIG. 1 ; and [27] FIG. 9 is a cross-sectional view showing a finishing step in the work process of the nacre pattern forming method using laser of FIG. 1.

Best Mode for Carrying Out the Invention [28] Various exemplary embodiments will now be described more fully with reference to the accompanying drawings in which some exemplary embodiments are shown. In the drawings, the thicknesses of layers and regions may be exaggerated for clarity. [29] FIGS. 1 and FIGS. 4 to 9 show a sequence and example of a nacre pattern forming method using laser according to an exemplary embodiment of the present invention. [30] Referring to FIG. 1, the nacre pattern forming method using laser includes the steps of: attaching a nacre base material plate 20 on which a nacre pattern is to be formed to a surface of a substrate 10; forming a protective layer by coating a coating agent 30 on the nacre base material plate 20; patterning by etching a region ranging from the protective layer to the inside of the nacre base material plate using a laser processor 40 for emitting laser; filling an etched groove of the nacre base material plate formed by laser processing with a background material 50 whose color is different from that of the nacre base material plate; and finishing a surface treatment by coating the coating agent 30, a brightener 60, and a raw lacquer mixed liquid 70 as finishing materials on the surfaces of the substrate and the nacre base material plate.

[31] In the attaching step, the nacre base material plate 20 is attached to the surface of the substrate 10 on which the nacre pattern is formed with an adhesive 80 (see FIG. 5).

[32] The nacre base material plate 20 uses a thin plate shell on which the nacre pattern is not formed and is attached to the entire surface of the substrate 10 or its partial surface (on which the nacre pattern is to be formed) by the adhesive 80.

[33] The adhesive 80 uses an epoxy adhesive, but is not limited thereto. The adhesive 80 may use any adhesive capable of securely fixing the nacre base material plate 20.

[34] On the other hand, in the attaching step, the pattern may be first printed on the surface of the substrate 10 by a screen print method (see FIG. 4) and then the nacre base material plate 20 may be attached to the substrate surface to cover the printed pattern (see FIG. 5).

[35] Since the screen print method is widely used as disclosed in Korean Patent Application Publication No. 2003-0080996, its description will be omitted.

[36] The protective layer forming step protects the nacre base material plate 20 in order to prevent an edge of an etched groove from being broken when the surface of the nacre base material plate 20 is coated by the coating agent 30 and etched by laser processing as described below (see FIG. 6).

[37] The coating agent 30 uses two-pack acrylic urethane paint, but is not limited thereto.

The coating agent 30 may use any paint that has high adhesive strength, high impact resistance, and high durability and must not be chemically varied by the laser during the laser processing as described below.

[38] In the laser processing step, the laser processor 40 for emitting the laser etches the surface of the nacre base material plate 20 on which the protective layer is formed according to the pattern (see FIG. 7).

[39] FIGS. 2 and 3 show a schematic configuration of the laser processor for etching the surface of the nacre base material plate and a control block diagram of the laser processor.

[40] Referring to FIGS. 2 and 3, the laser processor includes a main body 41 and a table

42 for seating the substrate 10 on which the pattern is formed. A beam focusing unit 43 for focusing the laser on the nacre base material plate 20 is provided on the table 42 and a laser conveyer 44 configured with a conveying means for vertically or horizontally conveying the beam focusing unit 43 is provided on the main body 41.

[41] The main body 41 includes a laser generator 45 for generating the laser. A processing controller 46 for controlling the laser conveyer 44 and the laser generator 45 is installed in the main body 41. The processing controller 46 may communicate with a computer 47, such that the processing controller 46 receives data of the pattern to be processed from the computer 47.

[42] In general, techniques of vertically or horizontally conveying the beam focusing unit using the conveying means and receiving the pattern data from the computer are widely used. Since these techniques are disclosed in detail in Korean Utility Model Publication No. 20-0279581 and Korean Patent Publication No. 1989-003651, their detailed descriptions will be omitted.

[43] As described above, the surface of the nacre base material plate 20 may be etched by predefined pattern data input to the computer 47 using the laser processor 40.

[44] In the filling step, an etched groove 21 formed by etching the surface of the substrate

10 by the laser processing is filled with the background material 50 and the surface of the substrate 10 and the surface of the nacre base material plate 20 are smoothed (see FIG. 8).

[45] Black paint and lacquer liquid may be used for the background material 50.

[46] Cashew paint obtained by refining liquid contained in a cashew shell found in a cashew tree that is an evergreen tree of the lacquer tree family may be used as the black paint.

[47] Black dye may be used as the black paint.

[48] The lacquer liquid may be a mixture of 30 percent by weight raw lacquer, 67 percent by weight soil, and 3 percent by weight water or a mixture of 30 percent by weight raw lacquer, 67 percent by weight ceramic powder, and 3 percent by weight water.

[49] The ceramic powder is obtained by grinding a tile having a main component of clay or porcelain clay. The tile is obtained by baking at a temperature of 900 ~ 1100 C for 10 - 13 hours and has a stronger hardness than the soil.

[50] In the finishing step, a surface treatment is performed by coating the coating agent

30, the brightener 60, and the raw lacquer mixed liquid 70 as the finishing materials on the surfaces of the substrate 10 and the nacre base material plate 20 and smoothly sandpapering the surfaces of the substrate 10 and the nacre base material plate 20 with No. 1000 to 2000 sandpaper.

[51] The finishing step is iterated about four or five times.

[52] On the other hand, the black paint and the lacquer liquid may be selectively used as the background material 50. [53] When the black paint is used as the background material 50, the filling step includes a coating step of coating the surface of the substrate 10 and the surface of the nacre base material plate 20 with the black paint as the background material 50 such that the etched groove 21 of the nacre base material plate 20 is filled, and a polishing step of removing the black paint coated on the surface of the nacre base material plate 20 such that the nacre base material 20 is exposed.

[54] In the polishing step, the black paint coated on the surface of the nacre base material plate 20 is removed by sandpapering the surface of the nacre base material 20 with No. 400 sandpaper.

[55] The finishing step includes the step of coating the surface of the substrate 10 and the surface of the nacre base material plate 20 from which the black paint has been removed with the coating agent 30, and the step of smoothly polishing the surfaces of the substrate 10 and the nacre base material plate 20 after the coating step.

[56] The coating step is performed by repeatedly coating the two-pack acrylic urethane paint as the coating agent 30 three or four times.

[57] The polishing step is performed by smoothly sandpapering the coated surfaces of the substrate 10 and the nacre base material plate 20 with No. 1000 sandpaper.

[58] When the polishing step is finished, a process of forming the nacre pattern on the substrate 10 is completed.

[59] When the lacquer liquid is used as the background material 50, the filling step includes a lacquering step of coating the surfaces of the substrate 10 and the nacre base material plate 20 with the lacquer liquid as the background material 50 such that the etched groove 21 of the nacre base material plate 20 formed by the laser processing is filled and a polishing step of removing the lacquer liquid coated on the surface of the nacre base material plate 20 such that the nacre base material plate 20 is exposed.

[60] The lacquering step is the step of coating the lacquer liquid on the surfaces of the substrate 10 and the nacre base material plate 20. In the lacquering step, soil or ceramic powder contained in the lacquer liquid fills the etched groove 21 of the nacre base material plate 20.

[61] The polishing step is the step of removing the lacquer liquid coated on the surface of the nacre base material plate 20 by sandpapering the surface of the nacre base material plate 20 with No. 400 sandpaper.

[62] The finishing step includes a brightening step of brightening the surface of the substrate 10 and the surface of the nacre base material plate 20 from which the lacquer liquid has been removed using a brightener 60 and drying the surfaces, and an additional lacquering step of coating the raw lacquer mixed liquid 70 on the surfaces of the substrate 10 and the nacre base material plate 20 using a cloth and drying the surfaces. [63] The brightening step is the step of brightening the surfaces of the substrate 10 and the nacre base material plate 20 using the brightener 60.

[64] The brightener 60 uses a metal polish in which chrome oxide is mixed with fatty oil.

[65] The additional lacquering step is the step of coating the raw lacquer mixed liquid 70 on the surfaces of the substrate 10 and the nacre base material plate 20 after the brightening step. The raw lacquer mixed liquid 70 is coated on the surfaces of the substrate 10 and the nacre base material plate 20 while rubbing to avoid a stain.

[66] The raw lacquer mixed liquid 70 is a mixture of 40 percent by weight raw lacquer and 60 percent by weight turpentine oil as a light oil.

[67] The brightening step and the additional lacquering step may be iterated four or five times.

[68] When the brightening step and the additional lacquering step are completely iterated, the process of forming the nacre pattern on the substrate ends.

[69] According to an exemplary embodiment of the present invention, the nacre base material is first attached to the substrate on which the nacre pattern is to be formed and then the pattern is formed on the nacre base material plate by the etching process using the laser, thereby addressing a problem that a worker should manually attach patterned nacre to the substrate. Thereby, products may be mass-produced in a short time.

[70] While exemplary embodiments have been disclosed herein, it should be understood that other variations may be possible. Such variations are not to be regarded as a departure from the spirit and scope of exemplary embodiments of the present application, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.

Claims

[1] A nacre pattern forming method using laser, comprising: attaching a nacre base material plate on which a nacre pattern is to be formed to a surface of a substrate; forming a protective layer by coating a coating agent on the nacre base material; patterning by etching a region ranging from the protective layer to the inside of the nacre base material plate using a laser processor for emitting laser; filling an etched groove of the nacre base material plate formed by laser processing with a background material whose color is different from that of the nacre base material plate; and finishing a surface treatment by coating a finishing material on the surfaces of the substrate and the nacre base material plate.

[2] The nacre pattern forming method of claim 1, wherein the attaching of the nacre base material plate includes: printing the nacre pattern on the surface of the substrate on which the nacre pattern is to be formed using a screen print method; and attaching the nacre base material plate to the substrate to cover the printed pattern.

[3] The nacre pattern forming method of claim 1 or 2, wherein the filling of the etched groove of the nacre base material plate includes: coating a black paint as the background material on the surfaces of the substrate and the nacre base material plate such that the etched groove formed by the laser processing is filled; and polishing by removing the black paint coated on the surface of the nacre base material plate such that the nacre base material plate is exposed, and wherein the finishing of the surface treatment includes: coating the coating agent on the surface of the substrate and the surface of the nacre base material plate from which the black paint has been removed; and smoothly polishing the surfaces of the substrate and the nacre base material plate after coating.

[4] The nacre pattern forming method of claim 1 or 2, wherein the filling of the etched groove of the nacre base material plate includes: coating a lacquer liquid as the background material on the surfaces of the substrate and the nacre base material plate such that the etched groove formed by the laser processing is filled; and polishing by removing the lacquer liquid coated on the surface of the nacre base material plate such that the nacre base material plate is exposed, and wherein the finishing of the surface treatment includes: brightening the surface of the substrate and the surface of the nacre base material plate from which the lacquer liquid has been removed using a brightener and drying the surfaces; and additionally lacquering by coating a raw lacquer mixed liquid on the surfaces of the substrate and the nacre base material plate using a cloth and drying the surfaces. [5] The nacre pattern forming method of claim 4, wherein the lacquer liquid is a mixture of 30 percent by weight raw lacquer, 67 percent by weight soil, and 3 percent by weight water. [6] The nacre pattern forming method of claim 4, wherein the lacquer liquid is a mixture of 30 percent by weight raw lacquer, 67 percent by weight ceramic powder, and 3 percent by weight water.