3m Innovative Properties Company

Richard M Jendrejack

William Blake Kolb

Robert A Yapel

Peter T Benson

Mikhail L Pekurovsky

Matthew S Stay

Raghunath Padiyath

Joan M Noyola

William R Dudley

Mitchelle A F Johnson

Methods of altering charge on a dielectric material involve application of an at least weakly conductive liquid to at least a portion of the dielectric material. The liquid is then at least partially removed from the dielectric material leaving a substantially uniform electrostatic charge on at least the portion of the dielectric material. Some methods provide a dielectric material that is both net neutral and completely neutral. Other methods generate a charge pattern that is used for subsequent processing.

Apparatus and methods for altering charge on a dielectric material

Methods and apparatus () to neutralize the charge on a moving web () by splitting the field present on the web (). One portion of the field is removed by a grounded element () proximate to, and optionally contacting, one side of the web (). Proximate the opposite side of the web, the apparatus includes an ion source (), which provides ions to the web () to neutralize the charge remaining on the web (), and a second grounded element () positioned between the ion source () and the web (). The methods provide a web () that is net neutralized and is also dual-side or bipolar neutralized.

Apparatus and methods for modification of electrostatic charge on a moving web

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Hudson, WI, United States of America

Richard M Jendrejack