Machine for manugacturing corrugated board
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United States of America Patent
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Mar 31, 1998
Grant Date -
N/A
app pub date -
Jan 24, 1997
filing date -
Jan 24, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A machine for manufacturing corrugated board including one or more flexible, disposable covers for the pressure-applying feet of the machine. The covers prevent wear and tear to the bottoms of the pressure-applying feet and may be easily replaced, as needed. In a belt-driven machine, the disposable covers may be located between the pressure-applying feet and the conveyor belt. In a machine with a beltless hotplate section, the conveyor belt is replaced by a pulling section located downstream from the hotplate section and the disposable covers may be located between the pressure-applying feet and the moving surface. The covers allow the thickness of the corrugated board to be varied while the board is moving through the machine without causing the leading edge of an added layer to catch on the upstream edges of the pressure-applying feet. In addition, the covers and/or the pressure applicators may be moved in the cross-machine direction to minimize waste when manufacturing different widths of corrugated board. For a zone-actuated machine, a separate cover may be provided for each zone of pressure applicators.
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