Windmöller & Hölscher Kg

David Finnemore

Torsten Schmitz

Frank Hoffmann

Waldemar Colell

Daniel Faustmann

Bernd-Alexander Gröpper

Alexander Wulfert

A method of monitoring stretchability of stretch films in a cast film method includes determining a position of a frost line of a film material, which is solidifying to form a film web, on a casting roller of a film machine, ascertaining a correlation of the determined position of the frost line with at least one target position, and comparing the ascertained correlation to at least one stretchability of the film material, which is assigned to the at least one target position.

Method and measurement device for monitoring stretchability in the production of stretch films in a cast film method

The invention describes contact rolls for pressing at least one web of material, preferably a web of plastic film, against at least one rotating winding device, the contact roll comprising a surface layer. At least two segments are provided which are spaced axially apart and which extend around, in which segments the quality of the surface layer differs from the quality of the other areas of the surface layer, at least some portions of said segments being in contact with the edges of the at least one web of material.

Contact roll

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Elvaston, United Kingdom

David Finnemore