Coating apparatus – Immersion or work-confined pool type – Work-confined pool
Patent
1988-10-20
1990-12-18
Beck, Shrive P.
Coating apparatus
Immersion or work-confined pool type
Work-confined pool
427414, 427420, 118410, B05C 318, B05C 502
Patent
active
049778528
ABSTRACT:
A device for simultaneous multilayer application in which discrete liquid substances are applied as at least two mutually-overlaid layers to a continuously moving web comprises a web, a backup roller around which the web moves and a hopper for simultaneously applying upper and lower layers to the web. The hopper includes first and second guide surfaces along which the liquid substances flow onto the web, and first and second slots for individually supplying the liquid substances to each of the guide surfaces. The slots are designed such that the length of the slot for supplying the lower layer is longer than the length of slot for supplying the upper layer and the width of the slot for supplying the lower layer is smaller than the width of the slot for supplying the upper layer. In this manner, the edges of the applied liquid substances are continuous along the length of the web and streaks are prevented from forming along the applied surfaces.
REFERENCES:
patent: 3005440 (1961-10-01), Padday
patent: 4060649 (1977-11-01), Coleman
patent: 4135477 (1979-01-01), Ridley
patent: 4154879 (1979-05-01), Choinski
patent: 4233346 (1980-11-01), Kerkhofs
patent: 4313980 (1982-02-01), Willemsens
Beck Shrive P.
Fuji Photo Film Co. , Ltd.
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