Paint & Coatings Industry

Materials for surface coating represent extreme challenges to pump technology

The printing and ink industry represent one of the most demanding sectors for delivery systems, with areas of application including the reliable supply of abrasive paper fillers and corrosive gluing agents, along with the exact metering of high-viscosity printing inks and varnishes.

Behind the scenes
One of the major problems facing conventional pumps is the lack of fluidity of the inks. It is not uncommon to see viscosities of 10,000 mPas or more, which means that achieving a continuous supply is very challenging and inferior pumping solutions can suffer under the stress and become blocked quickly.

Challenge accepted
A renowned printing house was struggling with repeated breakdowns of the diaphragm pumps used to refill offset ink at roughly 10,000 mPas from the transport truck to the storage tank. Because of this inadequacy, the unloading process was being greatly delayed and the pumps needed maintenance work, often requiring them to be removed completely and dismantled, a labour intensive and time consuming task.

Excellently solved 
To increase performance, economy and reliability, the company decided to use our NEMO® progressive cavity pumps, a single-stage pump model with L-geometry rotor and stator allowing for a higher delivery rate at a lower differential pressure. The slim-line units with frequency inverter and smaller rotor:

  • Prevented excessive clamping thereby improving mechanical efficiency.
  • Allowed space for multiple pump installations.
  • Enabled easy access to the devices in case maintenance work should become necessary.
  • Ran more reliably and efficiently than the previously employed diaphragm pumps, which resulted in the unloading time for the ink being halved.


Positive displacement pumps from NETZSCH are used in various areas of the ink and paper industry for everything from transporting pigment sludge or additives, to processing fluids and binding agents.
Each scenario requires a different configuration for our pumps depending on their intended use, but the broad experience of our company’s pump experts in this diverse market always results in a suitable combination to resolve any problem.

Technical Data

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NETZSCHNEMO® progressing cavity pump
MediumOffset ink
Viscosity10.000 cP

Products

TORNADO® Rotary Lobe Pump

NETZSCH TORNADO® self-priming, valveless, positive displacement pumps can be optimally customised to meet specific process and application requirements. They can be used for almost any media on intermittent, continuous or dosing applications.

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NEMO® Progressing Cavity Pumps

NEMO® Progressing Cavity Pumps have a very broad application range and are used in all branches of industry for the continuous, pressure-stable, gentle and low-pulsation conveyance of almost any substance. One advantage for the operator is that such a valveless positive-displacement pump is also capable of transporting stringy material safely.

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NEMO® C.Pro®

The NEMO® N-Ipos CY C.Pro® Dosing Pump is a fully synthetic pump for the precise dosing of a great variety of chemicals in environmental technology and the chemical industry. Its synthetic construction makes it perfectly suited for the gentle and low-pulsation conveyance and dosing of aggressive or non-aggressive chemicals.


Literature