JP2007217225A - Method for manufacturing ceramic heat-insulated container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for a ceramic heat-insulated container excellent in heat-retention and heat-insulation, and without being restricted to a ceramic ware having various shapes, using an biscuit substrate and a great-fired substrate of a ceramic ware for general home use. <P>SOLUTION: The ceramic heat-insulated container is provided by forming a vacant part 5 between an outer vessel 2 and an inner vessel 3 using a material to be burned by heating, and integrating at circumferential rim parts of upper openings through the vacant part. The ceramic heat-insulated container is characterized by exhausting a smoke generated from the material burned, cinders, hot air, and the like by heating when firing the unglazed substrate through a hole 6 by providing the hole communicating with at least one part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

A method for producing a ceramic insulated container having a heat insulation space between a partition wall of an outer container and an inner container in a double-structured ceramic container, with regard to a ceramic container such as a cup or a bowl made by the method of the present invention.

The conventional double-layer structure disclosed in Japanese Patent Application Laid-Open No. 2002-345616 relates to a conventional insulated ceramic container. An outer container and an inner container slightly smaller than the outer container are made as an unglazed body, and a vitreous layer is disposed on the outer container. Create a void by integrating them.

As another method of the heat insulating container, a core material is formed through a gypsum mold disclosed in [Patent Document] JP 2002-255628, covered with mud, and the core material is burned off by unbaking to form a void.
JP 2002-345616 A JP 2002-255628 A

The manufacturing method of the heat insulating container is a manufacturing method in which several parts are combined. For a ceramic container having many forms, a lot of labor is required for manufacturing. I am not satisfied with the production and it is not satisfactory. The present invention provides a method for producing a ceramic heat insulating container that is excellent in heat insulation and heat insulation by reducing the production cost and increasing the rate by measuring the number of layers using a ceramic clay base used in general households.

A method for manufacturing a ceramic heat insulating container made by the method of the present invention is a paper, wood chips, tea leaves, etc., of a raw material that is burned by heating inside an outer container 2 made of clay and an after-fired substrate. The material 4 is made by applying a material including a powdery material, and further, a clay, which is a ceramic raw material, is formed inside the material 4 to form a third-layer inner container 3. The inner container 3 is integrated with the outer container 2 and the material 4 sandwiched between the inner containers 3 at the peripheral edge of the upper end opening. Further, the ceramics formed in these three layers is burnt and baked, whereby the material 4 is burned down by heating to form a void 5 therein.

By taking such a process, the raw material 4 sandwiched between the outer container 2 and the inner container 3 is burned out by baking, and then a void is formed, and a multi-layer structure sandwiching the void is formed, and heat insulation and heat insulation are excellent. Ceramic insulated container is manufactured. By using this manufacturing method, it becomes possible to easily manufacture heat-insulating containers that form a multi-layer structure in ceramic containers having various shapes.

A ceramic container made by the method of the present invention is formed of a multi-layer structure, at least a part of which sandwiches a gap, and is provided with an opening that communicates with the gap at the bottom of an outer container so that it is burned off by heating during baking. This is a method of manufacturing a ceramic insulated container, characterized in that smoke, burning dust, hot air, etc. are discharged outside through the opening 6.

1-3 is sectional drawing which shows each process of the manufacturing method of this invention, FIG. 4 shows sectional drawing of the container produced by this method. This heat insulating container includes an unfired body and an unfired body, an outer container 2, an inner container 3 formed of clay slurry, which is a ceramic material, and a gap 5 sandwiched between these two layers. The outer side of the inner container 3 and the inner side of the outer container 2 are integrally formed at the peripheral edge of the upper end opening. In addition, an opening 6 for discharging smoke, burning residue, and high-temperature air of a material that is burned down by heating during baking is formed in the center of the outer bottom of the bottom portion of the outer container 2.

The outer container contains an unglazed body made of clay as a main material and an after-fired body. The material 4 formed by partitioning the outer container 2 and the inner container 3 includes a material that burns away at a raw baking temperature of 600 ° C. to 900 ° C., including powdered materials such as paper, wood chips, and tea leaves.

The size of the opening 6 formed inside the bottom hill of the outer container 2 is preferably a round hole shape with a diameter of 2.23 mm to 8 mm, and the opening 6 can be closed after firing the main body of the ceramic. It is possible to seal with an adhesive or the like in order to prevent water during dishwashing from entering the gap 5, and sealing may not be performed depending on the size of the opening diameter.

A method for producing the above-mentioned ceramic insulated container will be described. In FIG. 1 to FIG. 4, the outer container 2 already uses the unglazed substrate and the substrate after the main baking as the outer container 2.

An opening 6 is formed in the bottom of the outer container 2, and a material that is burned off when heated inside the outer container 2 is mudded and filled. Immerse the upper edge of the upper edge slightly below. The material 4 is coated on the inner side surface of the outer container 2 when the fluidized muddy material is discharged after the material is allowed to stand for the thickness of the material. Dry until material 4 hardens.

The inner container 3 that becomes the container of the third layer is made inside this material 4. The raw materials of ceramics, silicic acid, quartzite, and feldspar, are mixed to make clay, and further mud is poured into the raw material 4 and filled to the periphery of the upper end opening. After allowing the slurry to stand for a period of time until the thickness is reached, the inner container 3 covered with the slurry is formed inside the material 4 when the fluid slurry is discharged.

The ceramics used as the base of the heat insulation container which consists of three layers are formed in said process. The mud solidified, dried and shrunk, and the ceramics before unglazed were formed.

The raw material 4 is burned off by the unbaking and baking, and a gap portion 5 is formed between the partition walls of the outer container 2 and the inner container 3. Integration is formed as shown in FIG.

In the above manufacturing method, the thickness of the inner container 3 may be selected according to the size of the container and the purpose of use, and is preferably selected from the viewpoint of stress. In addition, baking and baking can be performed by applying decoration and glaze.

By providing the gap 5 in this manufacturing method, the heat insulating performance of this heat insulating container is 90 ° C hot water and when left for 2 minutes, while the surface temperature of the ceramic container is 79.7 ° C in the conventional type, this time It has been proved by thermography that a performance of 41.4 ° C., which has a very high thermal insulation effect, has been developed.

The heat insulating container made of ceramics of the present invention is an outer container 2 which is an outer container 2 which is an outer container 2 manufactured by the conventional manufacturing method and a method of using the substrate after the main baking as it is. To form the inner container 3. By using the material 4 that is burned down by heating between the two layers, the void portion 5 is formed to make a ceramic insulated container excellent in heat insulation and heat insulation that is simple in structure and simplified in manufacturing process. done.

Sectional drawing of the outer side container 2 which shows each process of a manufacturing method with the manufacturing method of this invention.・ Sectional drawing with which the raw material 4 burned down by heating was apply | coated to the outer side container 2 which shows each process of a manufacturing method with the manufacturing method of this invention. Sectional drawing of the outer container 2 which shows each process of a manufacturing method by the manufacturing method of this invention, the raw material 4 burned down by heating, and the inner container 3. FIG. Sectional drawing made by the manufacturing method of this invention. The enlarged view of the FIG. 4A part of the ceramic heat insulation container manufactured by the manufacturing method of this invention. The perspective view of the opening part seen from the bottom face of the ceramic heat insulation container manufactured by the manufacturing method of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Thermal insulation container 2 ... Outer container 3 ... Inner container 4 ... Material burnt down by heating 5 ... Gap 6 ... Opening

Claims (4)

Apply the ceramic base made from clay and the base after the main firing as the base of the outer container, including paper, wood chips, tea leaves, and other powdered materials that burn out when heated inside. Further, an inner container having no ridge portion similar to the outer container is formed on the inner side thereof, and the inner side of the outer container and the outer side of the inner container are integrated at the peripheral edge of the upper end opening of the inner container. A method for manufacturing a ceramic insulated container, characterized in that there is an opening communicating with the material to be burned. The inner container is formed inside a layer containing a powdery material such as paper, wood chips, tea leaves, etc., which is mud using clay, which is a ceramic raw material, and burned when heated. Method of ceramic insulated container. 2. The method for producing a ceramic heat insulating container according to claim 1, wherein the material applied between the outer container and the inner container is burned off by heating to form a void. 4. The method for manufacturing a ceramic heat insulating container according to claim 3, wherein an opening communicating with the gap is provided inside the bottom outer plateau of the outer container.

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