Electrostatic discharge of printed products in front of the shingle
Transport of printed products in the shingle
Printed sheets always have a larger volume at the waistband than at the open side due to the fold. In order to deliver a stable package of printed sheets from the presses, the sheets must be interleaved crosswise. The sheets run in a shingled manner or individually into the receiving shaft of the compensating stacker. Depending on the thickness of the printed product, a certain number of sheets are piled one on top of the other, then the pile is rotated by 180°.
Can there be transport problems in the shingle?
In front of the compensating stacker in the shingled stream, two copies repeatedly adhere to each other, especially with lightweight papers. This leads to transport problems in the shingled stream, especially with 90° curves.
By using special discharging bars suitable for high web speeds, the transport problem in the shingle can be solved.
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.