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US 11,384,007 B2Granted
Bushing for producing glass fibers
AssigneeTanaka Kikinzoku Kogyo K.K.
InventorsTomoyuki Tada, Toshihiro Osawa, Naoya Nagao, Atsushi Nakaoka
Life of this patent
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Abstract
A bushing for producing glass fibers, including: a base plate; and multiple nozzles from which molten glass is discharged, in which a nozzle group formed with the alignment of the multiple nozzles is joined to the base plate. A coating layer made of ceramics is formed on each of the nozzles forming at least a row of the outermost layer of the nozzle group, but the coating layer does not cover the entire nozzle, that is, the nozzle is covered so as to be in a state of no coating layer in the vicinity of the nozzle tip.
Claims11
A bushing for producing glass fibers, comprising:
- a base plate;
- and
- a plurality of nozzles from which molten glass is discharged, wherein
- a nozzle group formed with alignment of the plurality of nozzles is joined to the base plate,
- a coating layer made of ceramics is formed on each of the plurality of nozzles forming at least a row of an outermost layer of the nozzle group,
- each of the plurality of nozzles on which the coating layer is formed has an end face with no coating layer and a nozzle tip part with no coating layer on a side of glass discharge, and
- each of the plurality of nozzles on which the coating layer is formed has a length of the coating layer that is 50% or more and 90% or less with respect to an entire length of the nozzle, wherein the base plate and each of the plurality of nozzles are made of platinum or a platinum alloy.
4 more elements
Dependencies are inferred from the claim text.