Stretchable film web pretensioner

Details Stretchable film web pretensioner Stretchable film web pretensioner

B - Operations, Transporting

65

H

156/58, 242/9

B65H 23/00 (2006.01) B65B 11/04 (2006.01)

Patent

CA 1175027

"PRETENSIONER FOR STRETCHABLE FILM WEB" ABSTRACT OF THE DISCLOSURE A tensioner assembly pre-stretches a film web prior to unitizing a pallet load. The braking energy applied to the web feed- stock roll is detected as the web is dispensed. A control circuit varies the rotational speed of a pretensioner drive roller as a function of the braking energy to obtain uniform stretching of the web. The film web is pre-stretched to a uniform tension in two stages before being wrapped around the palletized load.

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