Glass manufacturing – Processes – Fining or homogenizing molten glass
Reexamination Certificate
2006-03-28
2006-03-28
Hug, Eric (Department: 1731)
Glass manufacturing
Processes
Fining or homogenizing molten glass
C065S135600, C065S347000, C065S374120, C065S098000, C065S029210
Reexamination Certificate
active
07017372
ABSTRACT:
A molten glass supply device is provided, which can solve unavoidable problems for high viscosity characteristics in connection with the conventional molten glass supply device for high viscosity glass. Such problems include improperly high heating cost caused by excessive heat radiation in a melting furnace, reduction in the grade of products deriving from an excess amount of an erosion foreign material and reduction in the product yield. High viscosity molten glass having a property in which a temperature at which the molten glass exhibits a viscosity of 1000 poise is 1350° C. or higher is supplied to a forming device through a melting furnace, a distribution portion in communication with the outlet of the melting furnace, and a plurality of branch paths branching from the distribution portion. In the branch paths, distribution resistance providing portions that provide distribution resistance to molten glass passed through the branch paths are provided. The supply pressure of the molten glass is equalized when molten glass is distributed from the distribution portion to the branch paths. The distribution portion has a shallower bottom than the melting furnace.
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Aoki Shigeaki
Takaya Tatsuya
Tomamoto Masahiro
Hug Eric
J.C. Patents
Nippon Electric Glass Co. Ltd.
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