Search International and National Patent Collections

1. (WO2018200229) METHOD OF APPLYING COATING LIQUID TO AN OPTICAL FIBER

Pub. No.:    WO/2018/200229    International Application No.:    PCT/US2018/027709
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Tue Apr 17 01:59:59 CEST 2018
IPC: C03C 25/10
C03C 25/12
C03C 25/18
Applicants: CORNING INCORPORATED
Inventors: MOORE, Robert Clark
NEILSON, Douglas Gregg
WATSON, Johnnie Edward
Title: METHOD OF APPLYING COATING LIQUID TO AN OPTICAL FIBER
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.