J. M. Voith Gmbh

Albert Woehrle, Deceased

Hans-Peter Sollinger

Hans-Joachim Fissmann

Franz Krautzberger, Deceased

Hans Weisz

Apparatus for applying a liquid coating onto a moving web has one or preferably two rotatable rollers. In the two roller embodiment both rollers lie on the same plane which is at or near the horizontal. The two roller embodiment positions the rollers adjacent each so as to form a press nip between them. The moving web makes contact with one of the rollers, or the single roller along an extended circumferential arc of the roller. Adjacent each roller is a supply apparatus for depositing a liquid on to a portion of the roller jacket not in contact with the web. Wiper rods are associated with each supply apparatus and are biased against the jacket of the roller to make the coating of liquid uniform. Surplus liquid is used to wash the rollers to remove web fibers and glue and pigment particulate to avoid contamination thereby of the supply apparatus and wiper rods. The surplus liquid and fibers and particulate are collected in sumps.

Apparatus and method for applying a liquid to a moving web

A coating device where the pressurized coating space formed between the doctor element and the material web and/or the counter roll carrying it is defined by a regulating plate on the inlet side relative to the material web. A guide device is so arranged in the coating space that coating mixture will circulate around it on all sides in one direction of rotation. The guide device generally leaves only relatively narrow flow channels open in the coating chamber so that harmful turbulent flows are extensively avoided which through pulsating air inclusions might lead to defects in the applied coating.

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Heidenheim, Germany

Albert Woehrle, Deceased