Title:
ガラス製造における厚さ制御区域での圧力制御方法および装置
Document Type and Number:
Japanese Patent JP5758614
Kind Code:
B2
Abstract:
Managing pressure within a thickness-control-zone (muffle door) housing relative to pressures in a glass-making machine enclosure and an upper chamber that is disposed outside the enclosure so as to minimize or control undesired airflows that would adversely affect thickness of glass ribbon. According to one pressure management technique, the pressure at a location in the housing is managed so as to be less than the pressure at a location that is within the enclosure as well as both outside and adjacent to the housing. In the event of a leak, as by a crack or unintended opening in the housing, for example, this pressure difference reduces or prevents airflow toward the ribbon and, thereby, undesired thickness variation in the ribbon. According to a second pressure-management technique, the pressure at the location is managed so as to be greater than the pressure in the upper chamber.
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Inventors:
Paul Gregory Chalk
Ardy elker roht
Sean Rachel Markham
Ardy elker roht
Sean Rachel Markham
Application Number:
JP2010266496A
Publication Date:
August 05, 2015
Filing Date:
November 30, 2010
Export Citation:
Assignee:
CORNING INCORPORATED
International Classes:
C03B17/06
Domestic Patent References:
| JP54040566B1 | ||||
| JP2009519884A |
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma
Kaori Kono
Hiroshi Higuchi
Go Sakuma
Kaori Kono
Hiroshi Higuchi