Depending on the shape of the semifinished BMC – material it will be filled into the injection moulding machine by a "pushrod" – system (fig. 1). From this area it will be transferred with a special screw for thermoset material. Once this material is homogenized it will be injected by the movement of the screw or by a piston. After being cured in the hot mould it will be demoulded and trimmed to its final shape.
Depending on the shear load in the screw or the piston aggregate the fibres will be broken, at the end the fibrelength will be in the area between 3 and 10 mm. The fibre distribution depends on the injection and the flow parameters in the process but is to be expected more or less random.
