1990-12-28
1992-12-15
Mathews, Alan A.
354298, 354324, G03D 306
Patent
active
051721538
ABSTRACT:
A web treatment apparatus comprises a means defining a channel through which the web is transported. Treatment fluid is injected into the channel on opposite sides of the web at spaced injection sites and evacuated from the channel on opposite sides of the web at spaced evacuation sites. The injection sites and evacuation sites alternate so that injected fluid is evacuated from adjacent evacuation sites. The streams of evacuated fluid are combined such that streams varying in flow path length and chemical depletion are sequentially mixed together in an ordered sequence prior to reinjection into the chemicals. In one embodiment means are also provided for sequentially dividing the fluid flow from a recirculation pump into fluid streams that are supplied to the injection sites.
REFERENCES:
patent: 3372630 (1968-03-01), Schmidt
patent: 3635144 (1972-01-01), Beck
patent: 4081816 (1978-03-01), Geyken et al.
patent: 4719173 (1988-01-01), Hahm
patent: 4804990 (1989-02-01), Jessop
patent: 4922277 (1990-05-01), Carlson et al.
Frank Lee F.
Helfer Jeffrey L.
Kocher Haribhajan S.
Wagner Paul W.
Eastman Kodak Company
Mathews Alan A.
Pincelli Frank
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