CPC B65B 57/02 (2013.01) [B65B 11/02 (2013.01); B65B 2011/002 (2013.01)] | 17 Claims |
7. A pallet wrapping system, comprising:
a pre-stretch carriage configured to pre-stretch stretch film, the pre-stretch carriage having:
at least one stretch roller including a first stretch roller with an outer surface configured to move at a first speed; and
a door configured to provide access to the at least one stretch roller when in an open position, and, when in a closed position, enclose the at least one stretch roller within the pre-stretch carriage and entrap the stretch film between the at least one stretch roller and the door; and
at least one encoder including a first encoder mounted on the door, wherein the first encoder is configured to measure a length of the stretch film passing over the first stretch roller while the door is in the closed position;
wherein each of the at least one encoder is movable towards and away from the door and is biased away from the door.
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