Windmoller Holscher

Helmut Helbig

Hartmut Upmeier

Gerhard Winkler

Werner Josef Zimmermann

Manfred Verlemann

Ferdinand Loning

In the drying of printed or coated webs of moving material with the aid of heated air, the air is cycled through drying chambers or hoods until it is laden with solvents up to a predetermined value of saturation such as 50% of the lower explosion limit, whereafter it is extracted.

Apparatus for drying printed or coated webs

In a film blowing plant comprising an extruder for the melt, a film blowhead, calibrating means for the blown tubular film, oscillatory take-off means for the film and a coiler for the flattened film, the output of the plant is set to an optimum figure by a process computer controlling the width and thickness of the film. The height of the line of solidification of the film above the blowhead is measured and, in response to a departure of this height from a given desired value, the output of the extruder is increased or reduced as the case may be.

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Lengerich, Germany

Helmut Helbig