Method for determining the winding quality of a film roll

  • US 9,731,929 B2
  • Filed: 09/26/2013
  • Issued: 08/15/2017
  • Est. Priority Date: 11/09/2012
  • Status: Expired due to Fees
First Claim
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1. A method for the determination of the winder quality of a film roll of a film on a winder roller comprising:

  • determination of the roll hardness of the film roll during the winding on of the film on the winder roller as a measure for the size of air spaces between film layers of the film in a direct manner at the film roll,determination of a variation from the determined roll hardness of the film roll from at least one standard value for the roll hardness of the film roll,determination of the film roll using the determined variation;

    wherein only for the two outermost layers the determination of the roll hardness occurs.

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