Advancing material of indeterminate length – By intermittent material-mover – With retrograde movement preventer
Patent
1998-10-28
2000-02-15
Mansen, Michael R.
Advancing material of indeterminate length
By intermittent material-mover
With retrograde movement preventer
226195, 2424196, 2425382, 24261512, B65H 2306, B65H 5914
Patent
active
060242663
ABSTRACT:
One or more porous air film rolls are used, in a system to support a flexible web during movement of the web, and selectively provide either compliant or rigid clamping of the web while performing processing operations on the web at a work station. The present invention is particularly suitable for punching holes on-the-fly, in both "X" and "Y" directions, in a flexible polyamide film. Up to a four-fold increase in punch tool productivity is provided by the present invention.
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Helinski Edward Frank
Henderson Donald Wesley
Houser David Erle
International Business Machines - Corporation
Mansen Michael R.
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