Viscosity Measurement

Runnability Analyzers for coating colors and pigment slurries

Simulation of coating performance of high speed coating process requires the following analyzer characteristics:
  • Ultra high shear rates
  • Very short shearing times
  • Similar measurement geometry to coating process
ACAV is the only system on the market to meet these requirements and therefore known as de facto standard in the industry with well over hundred global references.

ACAV results correlate well with blade loads and problems such as web breaks, scratches, streaks, blade bleeding etc. ACAV helps to adjust optimum blade loads, minimize screening & coating problems and solve runnability problems on coaters and on screens.

“While low shear and rheograms are commonly used in the industry to assess the runnability of coatings, these results demonstrate that such low shear techniques can be extremely misleading when it comes to the prediction of coating performance on high speed metered size press, rod and blade coaters. The use of more specialized “ultra-high” shear equipment such as the ACAV might be needed to better understand the rheological performance under commercial coating conditions.”

 

 

Our Partner:

ACA Systems Oy

Technical Data ACAV
  • Shear rate: 700.000 l/s (capilary)
    4.000.000 l/s (slit)
  • min. Shear rate: 5.000 l/s
  • Analysis Time: 9 min
  • Viscosity Range: 3 - 2.0 x 103 mPas (capillary)
    5 - 10 x 103 mPas (slit)
  • Automativ Cleaning: Yes
  • Dimension (L/W/H): 1214 x 391 x 690 mm
  • Weight: 170 kg
  • Power Supply: 1.0 kW, 110 - 240 V, 50 - 60 Hz, 10 A
  • Air Supply: min. 7 bar
  • Water connection: min. 3 bar