Glass fiber-forming apparatus
US4343635A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1980 |
| Grant date | Aug 10, 1982 |
| Priority date | — |
| Expiry date | Dec 29, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B37/083
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to apparatus for producing fibers from heat softened mineral material, such as glass. More specifically, this invention relates to an orifice plate for a glass fiber drawing bushing of the type having a flat undersurface and a plurality of orifices formed therethrough with the improvement comprising at least two sets of grooves formed on said undersurface, said grooves extending in intersecting relationship to divide said undersurface into a plurality of sections, said orifices being located within said sections. The grooves can have a width in the range of from aout 0.1 mm to about 1.2 mm and a depth in the range of from about 0.1 mm to about 0.5 mm. The orifice plate can comprise rod members at the intersections of the grooves with said rod members projecting beneath said grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.