Agfa-gevaert Ag

Basf Magnetics Gmbh

Joachim Mittmeyer

Johann Baarfusser

Lothar Langer

Siegfried Rieger

Reinhard Kratschmer

Reinhold Nentwich

Rainer Rohling

Waldemar Urschel

A suction roller arrangement for transporting web-form material consisting of a roller body in the form of a hollow cylinder of porous sintered metal, the inner space beneath the looping angle of the web being under reduced pressure. The problem of converting the torque required to transport the web with minimal reduced pressure while, at the same time, protecting the surface of the web is solved by making the pore diameter in the middle cylindrical zone of the roller larger than in the two peripheral zones and by giving the outer cylinder surface of the roller a smooth surface finish by lathe-turning, grinding and polishing. The stator in the inner space of the rotatable roller is polygonal in shape in the region of the looping angle and has different distances from the rotor.

Suction roller arrangement for transporting web-form material

An apparatus by which layer thickenings formed transversely to the direction of movement of a coated web are removed after the continuously moving web has been coated with liquids or dispersions, for example a web of photographic film or paper or magnetic recording carrier, are described. A deflecting roller (4) over which the web travels with its coated side facing the roller is situated downstream of the coating and drying devices. When a layer thickening approaches, a cleaning roller (2) covered with a fleece is swung into contact with the web, whereupon the web travels only over the cleaning roller.

Apparatus for the removal of thickenings formed in coatings transversely

Growing community of inventors

Neuried, Germany

Joachim Mittmeyer