US 10,888,894 B2
Method of applying coating liquid to an optical fiber
Robert Clark Moore, Wilmington, NC (US); Douglas Gregg Neilson, Wilmington, NC (US); and Johnnie Edward Watson, Hampstead, NC (US)
Assigned to Corning Incorporated, Corning, NY (US)
Filed by Corning Incorporated, Corning, NY (US)
Filed on Apr. 11, 2018, as Appl. No. 15/950,243.
Claims priority of provisional application 62/489,123, filed on Apr. 24, 2017.
Claims priority of application No. 2019098 (NL), filed on Jun. 20, 2017.
Prior Publication US 2018/0304304 A1, Oct. 25, 2018
Int. Cl. B05D 1/18 (2006.01); B05D 3/06 (2006.01); G02B 6/02 (2006.01); B05C 11/10 (2006.01); B05C 3/12 (2006.01); C03C 25/106 (2018.01); C03C 25/1065 (2018.01); C03C 25/18 (2006.01); C03C 25/12 (2006.01); B05C 3/172 (2006.01); B05C 3/00 (2006.01); B05D 7/20 (2006.01)
CPC B05D 1/18 (2013.01) [B05C 3/12 (2013.01); B05C 3/172 (2013.01); B05C 11/10 (2013.01); B05D 3/06 (2013.01); C03C 25/106 (2013.01); C03C 25/1065 (2013.01); C03C 25/12 (2013.01); C03C 25/18 (2013.01); G02B 6/02395 (2013.01); B05C 3/005 (2013.01); B05D 7/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of processing an optical fiber, comprising the steps of:
drawing an optical fiber in a drawing direction along a process pathway through a coating chamber, the coating chamber comprising a coating liquid, the coating liquid coating the optical fiber, the optical fiber entering the coating chamber through a guide die and exiting the coating chamber through a sizing die; and
directing a separate flow of the coating liquid through the coating chamber in a direction transverse to the direction of the drawing direction of the optical fiber, the separate transverse flow of the coating liquid sweeping across and through the process pathway of the optical fiber to mix with the coating liquid in the coating chamber;
wherein the separate transverse flow of the coating liquid is flowed in the transverse direction at a rate greater than 0.1 cm3/s; and
wherein the separate transverse flow of the coating liquid is introduced into the coating chamber at an inlet and the separate transverse flow of the coating liquid is removed from the coating chamber at an outlet opposite the inlet.