Coating apparatus – Immersion or work-confined pool type – Work extending through pool-confining wall area
Patent
1983-11-28
1986-04-01
McIntosh, John P.
Coating apparatus
Immersion or work-confined pool type
Work extending through pool-confining wall area
118420, 118DIG18, B05C 315
Patent
active
045790795
ABSTRACT:
To uniformly coat a fiber, it is fed downwards through a passage filled with a coating fluid. The passage has a downwardly tapering lower zone into which fluid is directed from outside the passage uniformly, radially inwardly and downwardly. The fluid directed into the lower zone suppresses turbulence within the fluid at a bottom outlet aperture within the lower zone. The passage at an upper zone is large enough to allow bubbles to float to the surface of the fluid. The arrangement prevents turbulence and air bubbles from causing thinly coated fiber regions which might adversely affect the fiber integrity. The passage is defined by two relatively moveable bodies so that the rate at which the coating fluid is injected into the lower zone can be varied.
REFERENCES:
patent: 2341731 (1944-02-01), MacGregor et al.
patent: 2360097 (1944-10-01), Balthes et al.
patent: 4409263 (1983-10-01), Aloisio, Jr. et al.
McIntosh John P.
Northern Telecom Limited
Wilkinson Stuart L.
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