Bushing for producing glass fibers and method for producing glass fibers
US12054417B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2022 |
| Grant date | Aug 6, 2024 |
| Priority date | — |
| Expiry date | Mar 10, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B37/095
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A bushing for producing glass fibers, including: a plurality of nozzles made of platinum or the like to discharge molten glass; and a base plate made of platinum or the like. A coating layer is preferentially formed on an outer circumferential face on a tip part on the side of glass discharge of the nozzle, and a width of the coating layer is 5% or more and 95% or less with respect to the entire length of the nozzle. The base plate includes a non-coating area. Areas of the nozzles and the base plate not provided with the coating layer act as a sacrificial metal for protecting the nozzle tip parts. In consideration of the sacrificial metal, a coverage rate P of the coating layer on the nozzle tip parts calculated with a prescribed equation is preferably 5% or more and 350% or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.