Patent ID: 7014181
Filing Date: 2006-03-21
Classification: B65H

Abstract:
1. A foldover apparatus for use downstream of an interfolding apparatus to receive a stack of interfolded sheets, the foldover apparatus comprising: a conveyor adapted to support the stack and move the stack of interfolded sheets in the downstream direction through a stack path; a forming plow fixed relative to the conveyor, the forming plow being curved in the downstream direction along the stack path; and a vacuum assembly adapted to separate at least a portion of at least one top sheet of the interfolded stack from the remaining portion of the stack, and adapted to release the portion of the at least one top sheet into contact with the forming plow, the portion of the at least one top sheet being folded over by the forming plow as the stack moves in the downstream direction; wherein the vacuum assembly has a first vacuum strength that is greater than zero, and a second vacuum strength that is greater than the first vacuum strength such that the vacuum strength of the vacuum assembly is adjustable to one of the first and second vacuum strengths.