The paper ribbons can be electrostatically blocked by charging bars. The bars are equipped with a quick-connect system for flexible use. An additionally installed discharging system prevents problems during finishing.
Active charging and discharging on an inline finishing system
Inline finishing system in a web offset press.
After the web offset press, the products are transferred to an inline finishing system for the direct mail market.
What are the problems with the paper ribbons at high web speeds?
After the turner bars, the ribbons are guided over the plow fold. The individual ribbons can slip in the system, resulting in inaccurate cutting and waste.
Which Eltex components are used?
The new POWER CHARGER units cover various performance stages and charging applications. They can be operated either with a supply voltage of 24 V DC or a line voltage in the range of 85 V – 264 V AC. The output voltage is 75 or 150 watts. A membrane keyboard or an optionally available, integrated touch panel is used to control the generators. POWER CHARGER units can be operated using analog operation or via digital fieldbus interfaces. At the market launch, a control system that uses CANopen and ModbusTCP are available. The modular system is only prepared for integrating other fieldbus standards. Protocol/device description files of the fieldbus interfaces for integration into the machine control: Information on fieldbus integration
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.
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.
Heavy-duty precision bar for supply voltages up to 60 kV. The charge and field distribution have been substantially improved by the optimized arrangement of the individual bars. Separate current-limited tips prevent an increase in air ionization and high-energy brush discharges.