Method of manufacturing molded body, slurry for molding, core for molding, method of manufacturing core for molding, hollow ceramic molded body, and light emitting container

A slurry for molding to be used in a method of producing a molded article in which a ceramic powder, a metal powder, or a mixture powder of these two powders is put in a dispersed state into a forming mold and cured in the forming mold to form a molded article, and at least a part of the forming mold is degraded or dissolved in releasing the formed molded article from the forming mold, characterized in that the slurry for molding contains the ceramic powder, the metal powder, or the mixture powder of these two powders together with a dispersion medium and a gellifying agent as major constituent components;

• the dispersion medium and the gellifying agent contain organic compounds having a reactive functional group;
• and the slurry for molding is cured by reaction between the organic compound in the dispersion medium and the organic compound in the gellifying agent.

A slurry for molding to be used in a method of producing a molded article in which a ceramic powder, a metal powder, or a mixture powder of these two powders is put in a dispersed state into a forming mold and cured in the forming mold to form a molded article, and at least a part of the forming mold is degraded or dissolved in releasing the formed molded article from the forming mold, characterized in that the slurry for molding contains the ceramic powder, the metal powder, or the mixture powder of these two powders together with a dispersion medium, a gellifying agent, and a dispersing agent as major constituent components;

• the gellifying agent and the dispersing agent contain organic compounds having a reactive functional group;
• and the slurry for molding is cured by reaction between the organic compound in the gellifying agent and the organic compound in the dispersing agent.

A core for molding constituting a forming mold to be used for molding a hollow ceramic molded article integrally having a hollow body part and a narrow pipe part, characterized in that the core for molding includes a wax molded article or molded article made of waxy substance having an outer shape corresponding to an inner shape of the body part and a pin having an outer shape corresponding to an inner shape of the narrow pipe part and joined to the wax molded article or molded article made of waxy substance to protrude from the molded article.

A core for molding to be used for simultaneously molding a plurality of hollow ceramic molded articles integrally having a hollow body part and a narrow pipe part, characterized in that the core for molding includes a plurality of wax molded articles or molded articles made of waxy substance having an outer shape corresponding to an inner shape of the body part and a long pin having an outer shape corresponding to an inner shape of the narrow pipe part and serially piercing through the wax molded articles or molded articles made of waxy substance for joining;

• and the pin is a pipe-shaped hollow pin and includes ejection outlets of the wax or waxy substance at portions corresponding to joining portions of the wax molded articles or molded articles made of waxy substance.

A method of producing a core for molding to be used for molding a hollow ceramic molded article integrally having a hollow body part and a narrow pipe part, the core including a wax molded article or molded article made of waxy substance having an outer shape corresponding to an inner shape of the body part and a molding pin having an outer shape corresponding to an inner shape of the narrow pipe part and joined to the wax molded article or molded article made of waxy substance to protrude from the molded article, characterized in that a pin without having an ejection outlet of the wax or waxy substance is adopted as the molding pin;

• a mold having a cavity corresponding to an outer shape of the wax molded article or molded article made of waxy substance and having a space part being in communication with the cavity for housing the molding pin is adopted as a forming mold;
• and the wax or waxy substance in a molten state is supplied to the cavity through an injection passageway of the wax or waxy substance disposed in the forming mold in a state in which the molding pin is housed in the forming mold.

A method of producing a core for molding to be used for molding a hollow ceramic molded article integrally having a hollow body part and a narrow pipe part, the core including a wax molded article or molded article made of waxy substance having an outer shape corresponding to an inner shape of the body part and a molding pin having an outer shape corresponding to an inner shape of the narrow pipe part and joined to the wax molded article or molded article made of waxy substance to protrude from the molded article, characterized in that a pin having an ejection outlet of the wax or waxy substance is adopted as the molding pin;

• a mold having a cavity corresponding to an outer shape of the wax molded article or molded article made of waxy substance and having a space part being in communication with the cavity for housing the molding pin is adopted as a forming mold;
• and the wax or waxy substance in a molten state is injected through an inner hole of the molding pin and supplied from the ejection outlet disposed in the molding pin to the cavity in a state in which the molding pin is housed in the forming mold.

A method of producing a core for molding to be used for simultaneously molding a plurality of hollow ceramic molded articles integrally having a hollow body part and a narrow pipe part, the core including a plurality of wax molded articles or molded articles made of waxy substance having an outer shape corresponding to an inner shape of the body part and a long pin having an outer shape corresponding to an inner shape of the narrow pipe part and serially piercing through the wax molded articles or molded articles made of waxy substance for joining, the long pin being a pipe-shaped hollow pin and including ejection outlets of the wax or waxy substance at portions corresponding to joining portions of the wax molded articles or molded articles made of waxy substance, characterized in that a mold serially having a plurality of cavities corresponding to an outer shape of the wax molded articles or molded articles made of waxy substance and having a space part being in communication with these cavities for housing the long pin is adopted as a forming mold;

• and the wax or waxy substance in a molten state is injected through an inner hole of the long pin and supplied from the ejection outlets disposed in the long pin to the cavities in a state in which the long pin is housed in the forming mold.

A hollow ceramic molded article integrally having a hollow body part and a narrow pipe part and molded with the use of a core for molding, characterized in that the body part has a smooth circumferential surface shape controlled by a wax molded article or molded article made of waxy substance that the core for molding has;

• and the narrow pipe part has a smooth circumferential surface shape controlled by a pin that the core for molding has.