Zellweger Luwa Ag

Werner Arb

Christoph F&auml;rber

The invention relates to a process and device for monitoring the quality of yarns. In order to differentiate extraneous materials in a yarn section front the yarn itself and from other extraneous materials more effectively, a signal (,) derived from the yarn (,) must be classified in a classification field (,). On the basis of that classification, the extraneous materials contained in the yarn and their types can be determined.

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Uster, Switzerland

Werner Arb