Glass manufacturing – Processes – Utilizing parting or lubricating layer
Patent
1997-01-24
1998-06-09
Chin, Peter
Glass manufacturing
Processes
Utilizing parting or lubricating layer
65 63, 65 64, 65 66, 65 84, 65122, 65127, 651822, C03B 3500, C03B 2100, C03B 900, C03B 1100
Patent
active
057626731
ABSTRACT:
In a method of manufacturing glass optical elements at high operational efficiency, a mass of molten glass which is dropped down is cut at a first step by a wind blast into a sequence of glass gobs each of which is received by a gas stream spouted from a lower portion. Each glass gob is kept afloat with a gas stream spouted to be adjusted to a temperature corresponding to a glass viscosity between 10.sup.5.5 and 10.sup.9 poises. Thereafter, the glass gob is pressed in a third step by the use of a pair of forming dies kept at a temperature which corresponds to a glass viscosity between 10.sup.8 and 10.sup.12 poises and which is lower than the temperature of the glass gob. During the third step, the forming dies are cooled to a temperature lower than the temperature corresponding to a glass viscosity of 10.sup.13.4 poises with the glass gob kept within the forming dies and are thereafter opened to release a shaped article from the forming dies. A plurality of the glass gobs may be simultaneously processed in parallel through the second and the third steps so that a gob supply pace at the first step is matched with each pace of the second and the third steps.
REFERENCES:
patent: 1739519 (1929-12-01), Peiler
patent: 3961927 (1976-06-01), Alderson et al.
patent: 4734118 (1988-03-01), Marechal et al.
patent: 5322541 (1994-06-01), Shimizu et al.
patent: 5340374 (1994-08-01), Komiyama et al.
patent: 5344476 (1994-09-01), Tomida
Fujimoto Tadayuki
Hirota Shin-ichiro
Takahara Hiroaki
Chin Peter
Hoya Corporation
Hoya Precision Inc.
Ruller Jacqueline A.
LandOfFree
Method of manufacturing glass optical elements does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing glass optical elements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing glass optical elements will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2194373