KR101136650B1 - Method for preparing ceramic accessary and ceramic accessary prepared by the same - Google Patents

Abstract

The present invention relates to a method for producing porcelain ornaments and porcelain ornaments produced thereby. The method of manufacturing ceramics ornaments according to the present invention facilitates molding and demoulding of delicate design forms by freezing the body using a silicone mold. Therefore, the manufacturing method according to the present invention can be usefully applied not only to porcelain ornaments, but also to products, electronic parts, decorative tiles, tableware decorations, etc., which were not formed by gypsum mold or metal mold.

Description

Method for preparing porcelain ornaments and porcelain ornaments produced thereby {Method for preparing ceramic accessary and ceramic accessary prepared by the same}

The present invention relates to a method for producing porcelain ornaments and porcelain ornaments produced thereby.

Jewelry is a generic term for accessories to embellish the human body and clothing, and has been used in various forms for a long time regardless of race or region, so that their origins and types are incalculable. Especially in the modern society where civilization is developed and the trend of fashion is increasing, the necessity of such accessories is increasing. Among them, jewelry such as rings, necklaces, earrings, brooches, bracelets, hats, and head ornaments are widely used. Accessories such as cell phone rings, key chains, and bag rings are also used in everyday life.

Jewelry materials are very diverse, such as precious metals, shells, animal bones, wood, jewelry, semi-precious stones, pearls, etc. In addition, all materials used in real life are being steadily developed to use as accessories for jewelry. Among the above materials, precious metals such as gold, silver and platinum having properties suitable for making jewelry are most frequently used.

On the other hand, pottery refers to a bowl or a decoration that is made of clay and baked in a high temperature fire, and can be divided into ceramics baked at a temperature of 1,200 ° C or lower and ceramics baked at 1,300 ~ 1,350 ° C. "Stoneware" collectively. Pottery, which is a raw material of ceramics, has a high absorption rate, so when you tap it, it emits a muddy sound and is baked at a low temperature below 1,200 ℃, and its durability is relatively weak. The porcelain has almost no water absorption, and when it is beaten, it produces a clear sound like metal and is fired at a high temperature of 1,300 ℃ or higher, unlike pottery, and is highly used for tableware and decoration. Raw materials used in ceramics include inorganic materials such as clay, feldspar, silica, and potter's stone. The ceramics are manufactured by molding them alone or by mixing them and applying heat to cure them.

In recent years, consumer demand for jewelry using ceramics is increasing, and research and development on jewelry using ceramics are actively progressed.

In general, molding methods of ceramics include a hand molding method, a jiggering method using rotational force, a slip casting method in which soil water is poured into a plaster mold, and a compression and extrusion method. The injection molding method of the molding method is due to the advantage of making a large number of porcelain of the same shape or complex shape in a short time, the porcelain produced by such injection molding method is widely used in jewelry.

However, in the case of the gypsum mold or the metal mold used in the injection molding method, it is impossible to produce a fine and thin hollow part or various design shapes, and there is a disadvantage that the molding is not clean after demolding. In addition, in the case of a metal mold, since a mold is used, an expensive mold manufacturing cost is required, which is not economical.

In addition, until now, pottery has been made in accordance with the mold angle in the mold of the porcelain prototype, and made a model (母 型) again and reproduced the mold to produce a very delicate form of porcelain was impossible.

Therefore, there is a need for the development of porcelain ornaments that can facilitate molding of delicate design forms that were not possible to mold with such a gypsum mold or metal mold and can be easily demolded.

The present inventors studied the porcelain ornaments that are easy to mold and demould in a delicate design form, and manufactured the porcelain ornaments by freezing the body using a silicone mold, and thus the porcelain ornaments thus manufactured were in the form of hollow parts with a delicate design. It was confirmed that the molding is stable without being damaged and easy demoulding, and completed the present invention.

The present invention is to provide a method for producing ceramic ornaments that are easy to mold and demould in a delicate design form and ceramic ornaments produced thereby.

The present invention

1) sculpting a circular shape on the surface of the material, pouring the silicone liquid, leaving it at room temperature for one day, and then removing the solid silicone mold from the circular shape to obtain a finished silicone mold,

2) mixing water, body and dispersant to produce a slip in a fluid state,

3) first and second coating and freezing the slip prepared in step 2) to the silicon mold obtained in step 1),

4) demolding the body from the frozen mold attached silicon mold, and

5) It provides a method for producing ceramic ornaments, including the step of natural drying and firing the demolded body.

The present invention also provides ceramic ornaments produced by the above method.

Hereinafter, the present invention will be described in detail step by step.

In the manufacturing method of the present invention , step 1) is a step of obtaining a silicon mold, and the material used at this time may be any material capable of precise engraving such as plastic or metal. The silicone liquid is used by mixing a silicone and a curing agent, the content of the curing agent is preferably about 10% to the total weight of the silicone. As a hardening | curing agent, the hardening | curing agent for mold used normally can be used.

Step 2) is a step of preparing a slip, and mixed with water and the base to make a thick state, by adding a dispersant little by little to prepare a slip (water content 25% and 20%) of the fluid state.

The possession may include stoneware possession, bone ash magnetic possession, white magnetic possession, and the like, but is not limited thereto.

The dispersant includes, but is not limited to, polycarboxylate sodium salt, polycarboxylate ammonium salt, polycarboxylate amine salt, cationic surfactant, and the like. Specific examples include SN-Dispersant 5077, SN-Dispersant 5088, SN-Dispersant 5020, Lomar D, Lomar PW-40, Lomar PWA-40, Cerasperse 44-CF, Cerasperse 5020-CF, Cerasperse 5468-CF, SN-Dispersant 9228, SN-Dispersant 7347, SN-Dispersant 5033 and Tenlo 70. The content of the dispersant is preferably 0.7 to 1.0% based on the total weight of the body.

Step 3) is a step of applying the first and second slip on the silicone mold and freezing. First, the slip (water content 25%) prepared in step 2) is first applied to the silicon mold prepared in step 1) thinly using a brush. Then apply a second coat with a slip (20% moisture content) so that the hollow is locked. The application of the slip into primary and secondary portions can prevent the formation of pores on the surface of the substrate. After application | coating is completed, it freezes for 20 minutes-about 1 hour in the freezing room of minus 15-20 degreeC.

Step 4) is a step of demolding the body from the frozen mold attached silicon mold, demolding the body immediately from the body attached silicon mold taken out of the freezer without delay. If you delay time after removing from the freezer, the body will be partially melted by body temperature, and the surface of the body may become unclean when demolded.

Step 5) is a step of naturally drying and calcining the demolded body, and then naturally dried for about 8 to 15 hours, then calcined for 5 to 10 hours at 1000 ~ 1500 ℃ to obtain a finished ceramic ornaments .

Porcelain ornaments produced by the above method are stably molded without deteriorating the shape of the hollow portion of the delicate design. However, porcelain ornaments made by molding at room temperature using a silicone mold have been impaired in the shape of the hollow part of the delicate design.

The method of manufacturing ceramics ornaments according to the present invention facilitates molding and demoulding of delicate design forms by freezing the body using a silicone mold. Therefore, the manufacturing method according to the present invention can be usefully applied not only to porcelain ornaments, but also to products, electronic parts, decorative tiles, tableware decorations, etc., which were impossible to be molded by gypsum mold or metal mold. In addition, by using the manufacturing method of the ceramic ornaments according to the present invention, it is possible to form a complex, delicate and hollow part of the design form, and it is economical because it does not require expensive molding equipment and does not require expensive cost. It is possible.

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided only for the purpose of easier understanding of the present invention, and the present invention is not limited by the examples.

Example 1  : Manufacture of Porcelain Ornaments

1. Preparation of Silicone Mold

The plastic surface was carved into a prototype using a computer numerical control (CNC) milling machine. The silicone liquid (KE1402, Nippon Shinwol Chemical Co., Ltd.) which mixed the silicone and the hardening | curing agent in the weight ratio 10: 1 was poured on the plastic material in which the round was carved, and it was left to stand at room temperature for one day. The solidified silicone mold was removed from the prototype to obtain a finished silicone mold.

2. Manufacture of slip

Water was added to the stirrer with propeller, and bone china was added little by little to make it thick. To this was added polycarboxylate sodium salt (Cerasperse 44-CF, Sanofco Korea Co., Ltd.) little by little to prepare a slip in the fluid state (water content 25% and 20%). At this time, the dispersant was 0.7 to 1.0% based on the total weight of the body.

3. Manufacture of porcelain ornaments

Slip (water content 25%) prepared in 2 above was firstly applied to the silicon mold prepared in 1 by using a brush. Then, the second application was performed by filling the slip (water content 20%) so that the hollow part was locked. After application | coating was completed, it frozen in 20 minutes-1 hour in the freezing room of minus 15-20 degreeC. Specifically, when the diameter of the silicone mold is 30 to 40 mm and the thickness is 1 to 3 mm, the temperature is frozen for about 30 minutes. When the diameter of the silicone mold is 50 mm or more and the thickness is 5 mm or more, the temperature is frozen for 50 minutes or more. . The body was demolded from the body-attached silicone mold taken out of the freezer and allowed to air dry for about 10 hours. It was then calcined to 1280 ° C. for 8 hours to obtain finished porcelain ornaments.

The manufacturing process of the ceramic ornaments according to the present invention is shown in Figures 1a to 1c.

Comparative Example 1  : Manufacture of Porcelain Ornaments

In the same manner as in Example 1, except that the solidified at room temperature without refrigeration after secondary application of the slip in 3 of Example 1, porcelain ornaments were prepared.

The porcelain ornaments produced in Example 1 and Comparative Example 1 were photographed to compare whether the delicate design form was intact. The results are shown in Fig.

As shown in Figure 2, the ceramic ornaments produced by the manufacturing method according to the present invention is molded in a stable and undamaged form of the hollow portion of the delicate design, while the ceramic ornaments produced in Comparative Example 1 is a hollow portion of the delicate design It is confirmed that the form of is damaged.

The method of manufacturing ceramics ornaments according to the present invention facilitates molding and demoulding of delicate design forms by freezing the body using a silicone mold. Therefore, the manufacturing method according to the present invention can be usefully applied not only to porcelain ornaments, but also to products, electronic parts, decorative tiles, tableware decorations, etc., which were not formed by gypsum mold or metal mold. In addition, by using the manufacturing method of the ceramic ornaments according to the present invention, it is possible to form a complex, delicate and hollow part of the design form, and it is economical because it does not require expensive molding equipment and does not require expensive cost. It is possible.

1A to 1C are views illustrating a process of manufacturing ceramics ornaments according to the present invention.

Figure 2 is a photograph comparing the ceramic ornaments produced by the method according to the invention (Example 1) and the ceramic ornaments prepared in Comparative Example 1 with a photograph.

Claims (8)

1) sculpting a circular shape on the surface of the material, pouring the silicone liquid, leaving it at room temperature for one day, and then removing the solid silicone mold from the circular shape to obtain a finished silicone mold, 2) mixing water, body and dispersant to produce a slip in a fluid state, 3) first and second coating and freezing the slip prepared in step 2) to the silicon mold obtained in step 1), 4) demolding the body from the frozen mold attached silicon mold, and 5) a method of manufacturing ceramics ornaments comprising the step of naturally drying and calcining the demolded body. According to claim 1, wherein in step 1) the material is a method of manufacturing ceramics ornaments, characterized in that the plastic or metal. The method of claim 1, wherein in the step 2) the possession of stoneware, bone ash and white porcelain porcelain jewelry manufacturing method characterized in that at least one member selected from the group consisting of. The method of claim 1, wherein the dispersing agent in step 2) is the production of ceramic ornaments, characterized in that at least one selected from the group consisting of polycarboxylate sodium salt, polycarboxylate ammonium salt, polycarboxylate amine salt and cationic surfactant Way. The method of claim 1, wherein the content of the dispersant in step 2) is a method of producing ceramic ornaments, characterized in that 0.7 to 1.0% based on the total weight of the body. The method of claim 1, wherein the freezing conditions in the step 3) is frozen for 20 minutes to 1 hour at minus 15 ~ 20 ℃. The method of claim 1, wherein the firing conditions in step 5) is a method of manufacturing ceramics ornaments, characterized in that baked for 5 to 10 hours at 1000 ~ 1500 ℃. delete

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