Apparatus for perforation of a sheet material
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United States of America Patent
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Jan 11, 1994
Grant Date -
N/A
app pub date -
Jul 17, 1992
filing date -
Jul 17, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for perforating a sheet material provides for a perforating die located intermediate two orbital rollers. The two orbital rollers move in orbital paths in the same orbital direction at the same speed and in positions which are 180 degrees apart. Each roller acts as a temporary storage input and output in opposite phase from each other so that incoming sheet material is alternately stored and dispensed as a loop on the orbital roller. Since the rollers are out of phase, this permits a segment of the sheet material to be stopped intermediate the orbital rollers so that the perforating die can act on the stopped segment.
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