Patent ID: 11939089
Assignee: PHOENIX WRAPPERS CORP.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 7:
8. A method for securing a palletized load comprising a top section, a bottom section, and a middle section therebetween, the method comprising the steps of:
dispensing a first stretch film having a first upper lateral side edge and a first lower lateral side edge from a first stretch film roll;
dispensing a second stretch film having a second upper lateral side edge and a second lower lateral side edge from a second stretch film roll;
partially overlapping the first stretch film and the second stretch film to form a combined stretch film;
passing the combined stretch film through a pre-stretcher;
wrapping the combined stretch film around the palletized load; and
varying a tension under which the combined stretch film is wrapped along a height of the palletized load as the combined stretch film is being wrapped around the palletized load;
wherein the tension under which the combined stretch film is wrapped around the palletized load is higher in the bottom section or the top section of the palletized load than in the middle section of the palletized load, or the tension under which the combined stretch film is wrapped around the palletized load is lower in the bottom section or the top section of the palletized load than in the middle section of the palletized load.