Processing Aid

In rigid PVC formulations, ultrafine coated SOCAL® and WINNOFIL® can remove the need for lubricant additives. At a level of 2 to 3%, the effect of SOCAL® and WINNOFIL® is equivalent to Zinc or Calcium stearate one, providing a cost effective and environmentally friendly alternative.

When ultrafine CPCC is compounded into rigid PVC several quite specific effects are observed. Amongst those seen are:

• Shorter fusion/gelation time.
• Improved surface finish and gloss.
• Elimination of plate out.
• Elimination of surface defects, i.e. sharkskin which occurs under conditions of high shear gradients, such as those seen in injection molding operations.

These observed effects are usually associated more with the use of organic processing aids and impact modifiers than with the use of only an inorganic additive.
However, the fact is that they are real effects seen with CPCC and clearly offer performance and economic benefits.

Abrasivity |Anti-sedimentation|Brightness|Impact Resistance|Neutralisation|Opacity|Porosity| Rheology|Sheen|Stiffness|Surface Appearance|Washability|Weathering resistance