Method and apparatus for continuously applying surface treatment

Details Method and apparatus for continuously applying surface treatment Method and apparatus for continuously applying surface treatment

1986-04-04

1989-03-14

Hornsby, Harvey C.

Cleaning and liquid contact with solids

Apparatus

For sheet, web, strand or bar form work, longitudinally...

134198, 134199, B08B 304

Patent

active

048117480

ABSTRACT:
A continuous article has its surface treated twice by first and second jets of fluids as passing though a tunnel provided on a pass line. A fluid flow is supplied through each of first and second introducing ports into the tunnel where it is converted into each of the first and second jets of fluids, one rushing over the article in the same direction as the article and the other rushing over the same in the opposite direction thereto for effecting surface treatments respectively by the first and second jets of fluid. Each of the first and second jets causes a negative pressure to be developed at each inlet and outlet outlet of the tunnel through which the article enters and exits the tunnel. The negative pressure in turn draws in the ambient air through the inlet and the outlet over the article to thereby provide an air seal at each inlet and outlet, preventing the fluids introduced in the tunnel from escaping outwardly thereof. The fluids after rushing over the article advance into an expansion chamber formed within the tunnel midway between the inlet and the outlet and is recovered through a discharge port of the expansion chamber. Accordingly, the surface treatment of the article can be performed in a closed system so as not to worsen the working environment.

REFERENCES:
patent: 2307694 (1943-01-01), Malke
patent: 2509668 (1950-05-01), Berggren
patent: 3204037 (1966-03-01), Bittle et al.
patent: 3623532 (1971-11-01), Cofer
patent: 3927540 (1925-12-01), Tanaka et al.
patent: 4270317 (1981-06-01), Kurie

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