System for joining covering sheet to stack - sets fold in position by transporting sheet along rotary edge

摘要

The system joins a stack of sheets to a covering sheet, which is glued to the rear side of the stack. The covering sheet is indented where a fold line is later to be formed, folded by transporting along a stationary folding edge, glued along an edge zone, and glued to the stack rear side. After folding along the stationary edge, the fold is set in position by transporting the sheet (4) along a rotary folding edge (56). ADVANTAGE - Precise folding and faster output.