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OFEM’s flexographic ink
pumping/wash-up systems are designed for proper delivery and
effective cleaning of flexographic printing units.
These
units integrate a pumping system carrying the ink from its
pail to the printing unit, and provides a proper control of
its correct ink flow into and from the applicator head. It
grants ink flow consistency and proper pressure control, in
order to avoid over-pressure, air bubbles formation, and
splashes.
In support of ink changes operations, the system
enables used inks evacuation from the inking circuit and its
recollection in the original pail, and subsequent circuit
cleaning in order to prevent new ink to be contaminated.
The proper cleaning of the inking circuit,
including pumps, pipelines and applicator heads, is achieved
by flowing a washing liquid which depend on the ink
characteristics (solvent, water, combined thinners) following
a certain sequence.
The general wash-up sequence includes:
- Ink
draining from the complete circuit;
- Washing product flow
into the circuit;
- Draining of the washing product.
OFEM’s "f-cleaner"
systems are generally offered in 2 different
versions:
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