The screw configuration has been optimized to ensure the retention of fiber length.
Minimising secondary fiber breakage reducing continuous high-shear kneading elements regulating the shear history of the glass fiber after intake
A compounder of glass-fiber-reinforced engineering plastics (PA6, PA66, PBT and PP-GF with 20 to 50% glass loading) for automotive, electrical/electronic and industrial structural parts required to meet tight mechanical, dimensional and batch-to-batch consistency requirements. In a reinforced system the major problem is not the glass loading, it’s getting the fiber fully wet-out and evenly distributed while keeping as much effective fiber length as possible.
The result: service life in the main wear zones increased from 4-6 months to 10-16 months; yearly maintenance stoppages were reduced by 32%; total operating cost was cut by approximately 16% together with improvements in retained fiber length and in tensile and flexural strength.