Ceramics manufacturing method capable of forming various shapes on the surface using mother-of-pearl

Abstract

A method for manufacturing ceramics capable of forming various shapes on the surface using mother-of-pearl is disclosed. The method for manufacturing ceramics according to the present invention comprises: a first step of molding the ceramics and then bisque-firing them; a second step of masking the area where mother-of-pearl is to be formed on the surface of the ceramics after the first step; a third step of applying a glaze to the ceramics after the second step; a fourth step of re-firing the ceramics after the third step; a fifth step of removing the masking from the surface of the ceramics after the fourth step and applying an adhesive thereon; a sixth step of attaching mother-of-pearl to the area where the adhesive was applied after the fifth step; and a seventh step of applying a coating liquid and drying after the sixth step; wherein the area where mother-of-pearl is to be attached is formed in an intaglio through the step difference between the glaze and the ceramic object during the glazing process of the third step.

Description

Technology Field

[0001] The present invention relates to a method for manufacturing ceramics, and more specifically, to a method for manufacturing ceramics that simplifies the manufacturing process compared to existing production processes by utilizing an inlay technique to increase work efficiency, and can also enhance the quality of the ceramics by attaching mother-of-pearl in various shapes to the surface of the ceramics. Background Technology

[0002] Ceramics are one of the earliest artifacts invented when humans began cultural life, and they have evolved into various forms over the ages.

[0003] Generally, while ceramics often express elaborate techniques and diverse colors with a focus on the functions necessary for daily life, they also possess unique characteristics where beauty can be found in simple color tones and bold forms, requiring more time and effort.

[0004] Various attempts are being made to create a unique and noble image for the purpose of commerciality or artistic value in these ceramic products, and methods are mainly used in which various patterns are drawn directly on the surface of bisque-fired ceramics, incised on the ceramics before bisque firing, or filled in the incised areas with other colors or materials.

[0005] Meanwhile, the term "sangam" refers to a craft technique in which various patterns are carved into the surface of metal, ceramics, wood, etc., and gold, silver, gemstones, bone, mother-of-pearl, etc., of the same shape are inlaid into them, or to a work created using such a technique.

[0006] It has been widely used in both the East and West since ancient times, and in Korea, it developed significantly in inlaid celadon and mother-of-pearl lacquerware; even today, it is used in mother-of-pearl lacquerware, mother-of-pearl chests, ceramics, and the like.

[0007] Furthermore, Najeon refers to a decorative lacquer craft technique involving cutting lustrous mother-of-pearl pieces into patterns and inlaying or attaching them; this process is primarily carried out on wood or lacquerware. In other words, Najeon is typically performed after the lacquer coating has been applied to objects such as wood or lacquerware; consequently, its application to ceramics is limited due to the difficulty of the process.

[0008] In the case of forming mother-of-pearl on ceramics, the current practice is to manufacture ceramics primarily by attaching the mother-of-pearl directly to the surface of the pottery.

[0009] More specifically, several methods have been proposed as follows for manufacturing ceramics that form mother-of-pearl:

[0010] Published Patent No. 10-2010-0138230 (December 31, 2010) describes a process comprising: a shaping process of ceramics; a first firing process in which the ceramics formed through the said shaping process are placed in a kiln and fired at a temperature of 1250–1320°C for 24–36 hours; a glazing process in which glaze is applied to the ceramics after the said first firing process; a second firing process in which the glazed ceramics from the said glazing process are placed in a kiln and fired a second time at a temperature of 1050–1120°C for 12–34 hours; a decal application process in which decals are attached to the ceramics after the said second firing process to decorate the product; a third firing process in which the ceramics after the decal application process are placed in a kiln and heated at a temperature of 790–880°C for 50 minutes to 2 hours; and, after the third firing process, an adhesive is applied to the surface of the ceramics and mother-of-pearl is attached to the location where the adhesive was applied. The method is characterized by comprising a mother-of-pearl attachment process, a first heat treatment process in which the ceramic is placed in a kiln after the mother-of-pearl attachment process and heated at a temperature of 160 to 200°C for 1 hour, a process of coating the surface of the ceramic with the mother-of-pearl attached after the first heat treatment process, and a second heat treatment process in which the ceramic is placed in a kiln after the coating process and heated at a temperature of 60 to 120°C for 15 to 40 minutes.

[0011] Meanwhile, considering the concern that attaching mother-of-pearl to the surface of ceramics using an adhesive, as in Public Patent No. 10-2010-0138230 (December 31, 2010), may cause the attached mother-of-pearl to fall off and damage marketability, Registered Patent No. 10-1500989 (March 4, 2015) proposed a method for forming ceramic patterns on ceramics.

[0012] Registered Patent No. 10-1500989 is characterized by manufacturing by including the following steps: Step 1-1, forming a ceramic and bisque firing; Step 1-2, applying a glaze to the ceramic and re-firing it; Step 1-3, preparing a design on the surface of the ceramic; Step 1-4, coloring the design using a ceramic overglaze technique and firing it; Step 1-5, drawing a mother-of-pearl pattern on the surface of the ceramic using a masking liquid; Step 1-6, applying gold or silver for ceramics to the surface of the ceramic; Step 1-7, removing the masking liquid and firing it; Step 1-8, applying a luster pigment to the surface of the ceramic and firing it; and Step 1-9, coloring the surface of the ceramic using a ceramic overglaze technique and firing it.

[0013] Registered Patent No. 10-1500989 is characterized by the ability to express the iridescent colors of mother-of-pearl by directly coloring the ceramics; however, as seen in the process mentioned above, it has the disadvantage that the overall process is complex and requires skilled techniques, such as the need to draw in the mother-of-pearl.

[0014] In addition, registered patent No. 10-0384476 (May 6, 2003) also proposes a technology for manufacturing ceramics with mother-of-pearl and lacquer patterns,

[0015] Registered Patent No. 10-0384476 comprises the steps of wet-sanding a ceramic base fired at a temperature of approximately 1000–1050°C and drying it for a certain period of time, repeating the process of applying black lacquer to the completely dried ceramic base and drying it for 2–3 days at least twice, and applying glue to the mother-of-pearl attachment site of the ceramic that has completely dried after the black lacquer, followed by drying at 85–90°C The method is characterized by comprising the steps of: applying heat to attach mother-of-pearl and removing glue around the mother-of-pearl with water and a brush; applying a lacquer material made by mixing cashew and petroleum with a predetermined color and transparent kerosene and petroleum evenly to the ceramic with the mother-of-pearl attached; and applying a protective film material made by mixing petroleum and kerosene to the ceramic after the lacquering process is finished, heating it under a temperature condition of about 600 to 700°C, and then drying it for about 2 to 3 days.

[0016] However, Registered Patent No. 10-0384476 also employs a process of directly attaching mother-of-pearl to the surface of ceramics, just like Published Patent No. 10-2010-0138230, and thus the same problems associated with this are anticipated. The problem to be solved

[0017] The present invention was devised to solve the aforementioned problems and aims to provide a method for manufacturing ceramics that simplifies the production process compared to existing manufacturing processes by utilizing an inlay technique, thereby increasing work efficiency, and enhances the quality of the ceramics by attaching mother-of-pearl in various shapes to the surface of the ceramics. means of solving the problem

[0018] A method for manufacturing ceramics that forms mother-of-pearl according to the present invention for achieving the above-mentioned purpose comprises: a first step of molding the ceramics and then bisque-firing them; a second step of masking the area where mother-of-pearl is to be formed on the surface of the ceramics that have undergone the first step; a third step of applying a glaze to the ceramics that have undergone the second step; a fourth step of re-firing the ceramics that have undergone the third step; a fifth step of removing the masking from the surface of the ceramics that has undergone the fourth step and applying an adhesive thereto; a sixth step of attaching mother-of-pearl to the area where the adhesive was applied after the fifth step; and a seventh step of applying a coating liquid to the area where the mother-of-pearl is attached and drying it after the sixth step. Effects of the invention

[0019] The present invention has the effect of obtaining a ceramic product with a smooth surface by masking the area to be attached, applying glaze, and then removing the masking, as described above, the glazing process, which is essential in the ceramic manufacturing process, creates an incised area for the mother-of-pearl attachment through the difference in height between the glaze and the ceramic object, thereby eliminating the need for a separate inlay (incised) process for the mother-of-pearl attachment area, and subsequently attaching the mother-of-pearl to the area and applying a coating.

[0020] Of course, compared to existing known manufacturing processes for forming mother-of-pearl, the process is simpler, allowing for the expectation of obtaining ceramics with excellent workability and marketability. Brief explanation of the drawing

[0021] FIG. 1 is a process diagram briefly illustrating a ceramic manufacturing process according to the present invention. FIG. 2 is a simplified diagram illustrating the process for attaching mother-of-pearl in a ceramic manufacturing process according to the present invention. FIG. 3 is a drawing of a ceramic product with mother-of-pearl formed thereon, completed through a ceramic manufacturing process according to the present invention. Specific details for implementing the invention

[0022] Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. In labeling the components of each drawing with reference numerals, the same components are indicated by the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted.

[0023] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments of the present invention. These terms are intended merely to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by these terms. Where it is stated that a component is "connected," "combined," or "connected" to another component, it should be understood that the component may be directly connected, combined, or connected to the other component, but that another component may also be "connected," "combined," or "connected" between the component and the other component.

[0024] As illustrated in FIG. 1, the method for manufacturing a ceramic according to the present invention comprises the following steps: a first step of molding the ceramic and then bisque-firing it; a second step of masking the area where mother-of-pearl is to be formed on the surface of the ceramic that has undergone the first step; a third step of applying a glaze to the ceramic that has undergone the second step; a fourth step of re-firing the ceramic that has undergone the third step; a fifth step of removing the masking from the surface of the ceramic that has undergone the fourth step and applying an adhesive thereon; a sixth step of attaching mother-of-pearl to the area where the adhesive was applied after the fifth step; and a seventh step of applying a coating liquid to the area where the mother-of-pearl is attached and drying it after the sixth step.

[0025] First, after shaping the ceramic into the desired form, the bisque firing, or first firing process (Stage 1), is carried out, in which the completely dried ceramic vessel is fired in a kiln at a temperature of 800 to 1000°C for 8 to 12 hours. The firing temperature and time may vary depending on the type of clay, the minerals contained therein, and the type of kiln, and are not limited to a firing temperature of 800 to 1000°C and a firing time of 8 to 12 hours.

[0026] Next, referring particularly to FIG. 2, a step (step 2) is performed to mask the area where mother-of-pearl is to be formed on the ceramic vessel after the first firing is completed. After preparing a design for the mother-of-pearl to be formed on the surface of the ceramic vessel, the area is masked.

[0027] The material used for masking is characterized as adhesive paper, such as masking liquid or masking tape. Since the masking must be removed after glazing, it is desirable to use a material that is easy to remove (although the term "adhesiveness" was used here, "tackiness" may be a more appropriate expression than "adhesiveness" as it must also be easy to remove later).

[0028] Next, the step of applying glaze to the ceramic vessel with the formed masking (step 3) is performed, and after firing the glazed ceramic vessel again (step 4), the masking formed on the surface of the ceramic is removed (step 5).

[0029] In step 3, the glazing may be performed excluding the masked area, or it may be performed including the masked area for convenience of work. Since the masking attached after glazing is removed, the glaze is ultimately not applied to the area where the mother-of-pearl will be attached.

[0030] Through the above process, a step difference is formed between the ceramic vessel and the glaze, and this part constitutes a technical feature unique to the present invention that differentiates it from existing processes.

[0031] The generally known inlay technique consists of a process in which an incise is first made on the surface of an unfired object—that is, an object that has not undergone the first firing (bisque firing)—and then the bisque firing is carried out.

[0032] In the case of the present invention, a specific area (where mother-of-pearl will be attached later) of a first-fired (bisque) vessel is masked and then glazed, and after the second-fire (re-fire), the masking is removed, thereby obtaining an effect similar to the inlay technique through the step difference caused by the glazing.

[0033] In other words, glazing is an essential process in pottery manufacturing; in the case of the present invention, the necessary process is carried out as is without adding specific processes or materials, while forming a step with the pottery object to prepare a space for the subsequent attachment of mother-of-pearl.

[0034] For reference, the fourth stage, or final firing, is usually carried out at a temperature of 800 to 1270°C for 8 to 12 hours, but like the first firing, the final firing can vary depending on the working environment.

[0035] Once the second firing is complete, the ceramic object has a completely vitreous surface, and then the masking formed on the ceramic surface is removed and adhesive is applied to the removed area (Step 5).

[0036] Various adhesives can be used, such as pigments, resins, instant adhesives, lacquer, two-component adhesives (epoxy), and pressure-sensitive adhesives.

[0037] Then, mother-of-pearl is attached to the area where the adhesive has been applied (Step 6), and then the area where the mother-of-pearl is attached is coated with a coating solution and dried (Step 7).

[0038] For step 7, a coating solution used for varnish, mother-of-pearl, and lacquer is applied once or several times depending on the drying state, and then finished.

[0039] This process is designed to add thickness or a vivid gloss to the surface of the ceramic and the mother-of-pearl attachment area so that there is no tactile difference.

[0040] Although embodiments according to the present invention have been described above, they are merely illustrative and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom. Accordingly, the scope of protection of the present invention should be defined by the following claims as well as their equivalents.

Claims

Claim 1 A method for manufacturing ceramics comprising: a first step of molding and bisque-firing the ceramic; a second step of masking the area where mother-of-pearl is to be formed on the surface of the ceramic that has undergone the first step; a third step of applying glaze to the ceramic that has undergone the second step; a fourth step of re-firing the ceramic that has undergone the third step; a fifth step of removing the masking from the surface of the ceramic that has undergone the fourth step and applying an adhesive thereon; a sixth step of attaching mother-of-pearl to the area where the adhesive was applied after the fifth step; and a seventh step of applying a coating liquid and drying after the sixth step; wherein, through the glaze application process of the third step, the area where mother-of-pearl is to be attached is formed as an intaglio through the step difference between the glaze and the ceramic object, and the material used for masking in the second step is adhesive paper such as masking tape.

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