METHOD AND MEASUREMENT DEVICE FOR MONITORING DUCTILITY IN THE PRODUCTION OF STRETCH FILMS IN A CAST FILM METHOD

摘要

The invention relates to a method for monitoring ductility in the production of stretch films in a cast film method, comprising the following steps: - identifying the position of a frost line (FL) of a film material (100), which solidifies to form a film web (110), on a casting roller (30) of a film machine (10), - determining the correlation (KO) of the identified frost line (FL) position to at least one target position (SP), and - comparing this determined correlation (KO) with a film material (100) ductility that is associated with said at least one target position (SP).