As illustrated, the surface resistance of the inner layer of the carbon fiber filled compound is much lower than that of its skin layer. This is due to a deviation in the conductive filler population within the polymer.
Specifically, the variable shear force distribution during injection molding results in uncontrolled and random fiber orientation in the base polymer, directly affecting the parts resistance values.

Krefine's new carbon technology, however, is not affected by these shear forces which allows for consistent resistance values for the skin and inner layers whether in unfilled or fiber-reinforced compounds.