Unit load wrapping with controlled wrap tensioning

Details Unit load wrapping with controlled wrap tensioning Unit load wrapping with controlled wrap tensioning

B - Operations, Transporting

65

B

156/32

B65B 11/08 (2006.01) B65B 9/02 (2006.01)

Patent

CA 1251720

UNIT LOAD WRAPPING WITH CONTROLLED WRAP TENSIONING Abstract of the Disclosure Apparatus and method for wrapping a resiliently stretchable film wrap around a group of articles stacked on a pallet, with the film wrap tensioned to a desired tension, by feeding the film wrap along a feed path from supply rolls to a wrapping station, with tension rollers placed serially along the feed path such that the film wrap is coupled for movement with the surface of each tension roller, the tension rollers being driven so that the surface speeds of the serially located roller sur- faces differ from one another in order to stretch and tension the film wrap to a given tension, and the stretched and tensioned film wrap being applied to the stacked articles at a rate rela- tive to the advancement of the film wrap from the tension rollers so as to attain the desired tension in the applied film wrap while limiting the magnitude of forces exerted upon the unit load by the tensioned film wrap.

423903

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