Apparatus for electrical perforation of webs

A web is electrically perforated at high hole density by applying alternating-current voltage across an electrode pair facing the web while pressurized gas is supplied to the electrode gap. Voltage amplitude level and gas flow and direction thereof are selected to provide for the striking of multipl...

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Bibliographische Detailangaben
Hauptverfasser:	LANZILLOTTI, HARRY V, CLAFLIN, WARREN E, SCOTT, GEORGE R, HOPKINS, ROGER L, HARDESTY, WILLIAM R, LILLY, A CLIFTON JR
Format:	Patent
Sprache:	eng
Schlagworte:	CIGARETTES CIGARS CUTTING CUTTING-OUT HAND CUTTING TOOLS HUMAN NECESSITIES MACHINES FOR MAKING CIGARS OR CIGARETTES PERFORATING PERFORMING OPERATIONS PUNCHING SEVERING SEVERING BY MEANS OTHER THAN CUTTING SMOKERS' REQUISITES STAMPING-OUT TOBACCO TRANSPORTING
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