Discharging a film on an unwinder with different discharging bars

Printed or unprinted plastic films must first be unwound from a reel for further processing.

On a film stamping machine, a plastic film is unwound at two unwinding stations and then passes on to the stamping unit. The film can be unwound at both unwinding stations from the top or bottom side.

Our solution

Two different electrode types with different operating principles were used in order to be able to discharge ideally with all unwinding variants.

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Which Eltex components are used?

The following Eltex products have been installed and tested on site by our experts. If you would like to learn more or have any questions, please do not hesitate to contact us.


The robust all-rounder with a large power input The VARIO IONIZER ES51 has 5 connections and works with proven Eltex technology. On the top side there is a LED display for the function and fault message. The device also has an analog interface. For a good ion balance, the device is available with and without parameter diode.


blueBAR R50

The robust all-rounder bar The VARIO discharge bar blueBAR R50 creates a significantly higher active discharge capacity than most discharge techniques. The isolated ground conductor enhances the E-field at the active tips, contributing to increased production and velocity of charge carriers. Thus, significantly more positive ions and free negative electrons are available than with conventional bars. At the same time, the bars have a high passive discharge capacity. The resistance-decoupled tips ensure good discharge performance and make the bar absolutely short-circuit and touch-proof.  



Safe discharge at large and changing distances The intelligent sensor technology of the SINGLE ionSTAR RX3 discharging bar continuously detects the distance and existing charge of the object to be discharged and automatically adjusts the output power to the conditions currently present. The system brings excellent discharging capabilities to winder systems. The powerful high-voltage generator is integrated into the bar and is capable of compensating for high charges in the shortest possible time. Wear-free emission tips and a robust, easy-to-clean geometry ensure minimal maintenance.


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