To maximise the process stability and to reduce costs, filtering the dampening solution is a must for web offset printing applications.
The hydroflow system is a belt filter system which has been specifically adapted to this printing method. Compared to other prefilter systems, the belt filter offers several important advantages: Although it uses inexpensive filter materials, the prefilter module eliminates coarser dirt particles. Then, the downstream main filter module of the dampening solution circulator eliminates finer particles. The result: improved filtration result and a sufficient filter service life at moderate costs.
When using the hydroflow system on a rotary printing press, prefilter boxes with filter mats, which are normally used in heatset printing, are no longer necessary.