Invention Grant
- Patent Title: Method of manufacturing translucent ceramic and orthodontic member
- Patent Title (中): 制造半透明陶瓷和正畸构件的方法
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Application No.: US12397516Application Date: 2009-03-04
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Publication No.: US08420006B2Publication Date: 2013-04-16
- Inventor: Masaaki Sakata , Junichi Hayashi , Hideki Ishigami
- Applicant: Masaaki Sakata , Junichi Hayashi , Hideki Ishigami
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Priority: JP2008-055520 20080305
- Main IPC: B28B1/24
- IPC: B28B1/24 ; C04B33/32 ; A61C13/20

Abstract:
A method of manufacturing a translucent ceramic is provided. The method comprises: mixing a raw powder and an organic binder and kneading them to obtain a compound, the raw powder containing an aluminum oxide powder and a magnesium oxide powder, and the organic binder containing a first organic component and a second organic component; molding the compound in a predetermined shape by an injection molding method to obtain a green body; debinding the organic binder contained in the green body to obtain a brown body; and sintering the brown body to obtain a sintered body of the translucent ceramic. When the softening point of the first organic component is defined as “T1” (° C.) and the softening point of the second organic component is defined as “T2” (° C.), the kneading step is carried out at a temperature in the range of T2 or higher but lower than T1 after the raw powder and the organic binder are preheated at a temperature in the range of T1 to T1+100(° C.). An orthodontic member is also provided.
Public/Granted literature
- US20090224442A1 METHOD OF MANUFACTURING TRANSLUCENT CERAMIC AND ORTHODONTIC MEMBER Public/Granted day:2009-09-10
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