Method of and arrangement for coating a fibre

Details Method of and arrangement for coating a fibre Method of and arrangement for coating a fibre

B - Operations, Transporting

29

C

18/752

B29C 47/02 (2006.01) B05C 3/12 (2006.01) C03C 25/18 (2006.01) H01B 13/14 (2006.01) H01P 3/00 (2006.01)

Patent

CA 1281521

ABSTRACT: "Method of and apparatus for coating a fibre". A method of and an apparatus for providing a bubble-free coating on a fibre, more particularly on an optical fibre. A fibre to be coated is fed into a pressure chamber (61) via an inlet duct (56) with a restricted in- let opening (57) and leaves the pressure chamber (61) through an outlet opening (41) of a nozzle (40). Liquid coating material is supplied to the pressure chamber (61) at such a pressure that the coating material rises in the inlet duct (56) up to a certain level to form a convex meniscus (D). By flushing the surroundings of the inlet opening (57) with a gas having a kinematic viscosity which is lower than that of air, the drawing speed at which the applied coating is still bubble-free can be considerably increased. (Fig. 2).

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