Gema Switzerland Gmbh

Eltex-electrostatik-gmbh

Klaus Domschat

Christian W Trimborn

Armin Goepfrich

Armin GÖPFRICH

A winding machine for web-type materials, in particular film materials, comprises a feeding device and at least one winding shaft which is capable of being driven and designed to receive a winding core for the winding of the web-type film material, wherein the winding machine is allocated a system for regulating and/or reducing an electrostatic charge of the web-type material during the winding process.

Winding machine for web-type materials and method for operating such a winding machine

An antistatic device for reducing electrostatic charges on moving material webs may include an active positive electrode assembly having a plurality of active individual positive electrodes electrically connected to a positive high voltage source. The device may include an active negative electrode assembly having a plurality of active negative electrodes electrically connected to a negative high voltage source. A sensor system may be included for detecting a polarity of a neutralizing current between the material web and the antistatic device during operation of the antistatic device, and a controller for controlling the high voltage sources. The controller may be coupled to the sensor system and may be at least one of programmed and configured to one of active or leave activated the high voltage source required in each case and one of deactivate and leave deactivated the high voltage source not required in each case in response to the detected polarity of the neutralizing current.

Antistatic device and associated operating method

An antistatic device for reducing electrostatic charges on moving material webs may include at least one active electrode assembly. The electrode assembly may include a plurality of active individual needle-shaped electrodes, which during operation may be electrically connected to an associated high voltage source. A controller may be included for controller the voltage source. The at least one active electrode assembly and the controller may be arranged in a housing. A signal device may be arranged at least one of in and on the housing. The signal device may include an optical indicator for outputting a signal to a user. The signal may correlate with at least one parameter of the material web. The at least one parameter may include a polarity of the material web.

The invention relates to a high-voltage electrode with a plurality of individual electrodes arranged mutually in parallel, these electrodes being electrically connected in groups or all of them together and being characterized in that the high-voltage electrode exhibits an elongated, elastically deformable strip of an electrically insulating material; that the individual electrodes are arranged perpendicularly to the longitudinal extension of the strip and project past one of the longitudinal edges of the strip with their tips; and that an electric conductor is mounted in the longitudinal extension to at least one flat side of the strip.

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Loerrach, Germany

Klaus Domschat