Method and apparatus for optical fiber coloring
US9181125B2 · kind B2 · utility
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4References
3Claims
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Key dates
| Filing date | Mar 24, 2014 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Mar 24, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C25/475
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of coloring optical fibers during the optical fiber drawing that includes the steps of feeding a natural fiber coating material and a colorant to a mixer; mixing the natural fiber coating material and the colorant in the mixer to obtain a colored coating material; and supplying the colored coating material to a coating die. The feeding step includes exerting on the natural fiber coating a first gas pressure variable with at least one fiber drawing parameter; and exerting on the colorant a second gas pressure variable with at least one fiber drawing parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.