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Dynamic adjustment of wrap force parameter responsive to monitored wrap force and/or for film break reduction

  • US 10,227,152 B2
  • Filed: 01/14/2015
  • Issued: 03/12/2019
  • Est. Priority Date: 01/14/2014
  • Status: Active Grant
First Claim
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1. A method of controlling a load wrapping apparatus of the type to wrap a load on a load support with packaging material dispensed from a packaging material dispenser through relative rotation between the packaging material dispenser and the load support, the method comprising:

  • determining a containment force parameter related to a desired containment force to be applied to the load during at least a portion of a wrap cycle;

    initiating the wrap cycle to wrap the load with packaging material dispensed from the packaging material dispenser during relative rotation between the packaging material dispenser and the load support; and

    during the initiated wrap cycle;

    monitoring a wrap force applied to the load by the packaging material during the relative rotation;

    performing a comparison between the monitored wrap force and the containment force parameter after a conversion between wrap force and containment force is performed for the monitored wrap force or the containment force parameter; and

    dynamically controlling a dispense rate of the packaging material dispenser during the wrap cycle based on the comparison between the monitored wrap force and the containment force parameter.

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