Coating colors are rheologically complex materials. Their viscosity is strongly dependent on shear rate. Modern highspeed coaters generate shear rates > 1 000 000 1/s
ACAV AX 100 measures viscosity at shear rates > 1 000 000 1/s whereas low shear rheograms that are commonly used in the industry demonstrate only low shear viscosity portion and can be extremely misleading when it comes to the prediction of coating performance or runnability on high speed coaters.
Unique and tailored measurement head design provides excellent contact with the web and eliminates the leakage air, dust and other disturbances.
Generated stable air flow leads to very high correlation (> 0,95 R2) between ACA Permi and any lab standard (Gurley, Bendtsen, Coresta, delta P…)
Roll to roll data and color maps with high statistical confidence to identify uniform and non-uniform rolls.
Optimize pigment particle size distribution for higher solids, better quality etc…
Optimize binder and co-binder amounts
Troubleshoot coating defects
Optimize coater runnability
Study the influence of temperature on coating behavior
Develop new coating recipes
Select right thickeners and other coating materials
Develop coating materials to replace plastic packaging
Define the operating window of complex barrier materials
Check the coating rheology at ultra-high share rates
Study the influence of various materials on coating rheological behavior
Binder, pigment, additive suppliers & research centers
According to our experiences the screening problems can be identified with ACAV ultra-high shear viscometer”
Understanding of the flow characteristics at realistic shear rates is utmost important for us in order to formulate new advanced specialty coatings”