Method of applying coating liquid to an optical fiber
US10888894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2018 |
| Grant date | Jan 12, 2021 |
| Priority date | — |
| Expiry date | Apr 21, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D7/20
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of applying a coating liquid to an optical fiber is described. An optical fiber is drawn through a guide die into a pressurized coating chamber and through the pressurized coating chamber to a sizing die. The pressurized coating chamber contains a coating liquid. The method includes directing coating liquid in a direction transverse to the processing pathway of the optical fiber in the pressurized coating chamber. The transverse flow of coating liquid counteracts detrimental effects associated with gyres that form in the pressurized coating chamber during the draw process. Benefits of the transverse flow include removal of bubbles, reduction in the temperature of the gyre, improved wetting, homogenization of the properties of the coating liquid in the pressurized coating chamber, and stabilization of the meniscus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.