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US 3,973,062 AGranted
Coating device
AssigneeCiba-Geigy Corporation
InventorFritz Fahrni
Life of this patent
Estimating the term…
Abstract
Apparatus is provided for the simultaneous application of a plurality of layers of liquid coating compounds to an article. The apparatus and method of use thereof is, in one aspect, intended for coating a film with photographic emulsions.
Claims18
Apparatus for the simultaneous application of at least two layers of liquid coating compounds to an article, comprising a pair of slides that extend downwardly from spaced-apart locations to define a closely spaced combining slot between their lower ends;
- means for supplying a layer of liquid onto each slide at the upper end whereby each layer may flow down its slide through the combining slot, the layers being combined at the combining slot;
- and
- means for conveying articles to be coated beneath the combining slot.
A method for the simultaneous application of at least two layers of liquid coating compounds to an article, comprising the steps of:
- supplying a layer of liquid to the upper end of a pair of slides that extend downwardly from spaced-apart locations to define a closely-spaced combining slot at their lower ends;
- allowing the layers to flow down the slides and through the slot;
- combining the layers as they flow through the combining slot;
- and
- conveying articles to be coated along a path beneath the combining slot.
2 more elements
Dependencies are inferred from the claim text.