Method of and arrangement for coating a fibre
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United States of America Patent
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Nov 3, 1987
Issued Date -
N/A
app pub date -
Apr 17, 1986
filing date -
Apr 19, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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 inlet 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.
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