Title:
MOLD AND METHOD FOR MANUFACTURING QUARTZ GLASS CRUCIBLE
Document Type and Number:
WIPO Patent Application WO/2019/116972
Kind Code:
A1
Abstract:
The present invention provides a mold for manufacturing a quartz glass crucible by a rotary molding method, wherein a plurality of grooves that are concentric with respect to a mold rotation axis are provided in at least a straight body section of the inner surface of the mold, the plurality of concentric grooves being non-penetrating grooves which do not pass through the mold. Thus, the mold for manufacturing a quartz glass crucible by a rotary molding method is provided, the mold having the inner surface that is configured to make it difficult for quartz powder to slide off when forming a quartz powder mold body.
Inventors:
SAWAZAKI JIRO (JP)
OHAMA YASUO (JP)
TANIGUCHI KATSUMI (JP)
OHAMA YASUO (JP)
TANIGUCHI KATSUMI (JP)
Application Number:
PCT/JP2018/044626
Publication Date:
June 20, 2019
Filing Date:
December 04, 2018
Export Citation:
Assignee:
SHIN ETSU QUARTZ PROD CO LTD (JP)
International Classes:
C03B20/00
Domestic Patent References:
| WO2015001593A1 | 2015-01-08 |
Foreign References:
| JP2004026609A | 2004-01-29 | |||
| JP2008273788A | 2008-11-13 | |||
| JP2012017239A | 2012-01-26 | |||
| JP2005298288A | 2005-10-27 | |||
| JP2004026609A | 2004-01-29 |
Other References:
See also references of EP 3725749A4
Attorney, Agent or Firm:
YOSHIMIYA Mikio et al. (JP)
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