Method for controlling uniformity in tire tread stock

摘要

Uniformity in weight per unit length of continuously extruded tire tread stock is improved by measuring a dimension thereof such as thickness in the tread stock between the extruder die face and the conveyor and controlling the speed of the conveyor in response to deviations from an arbitrary norm of the dimension. A laser beam measuring device for measuring thickness variations in the tread stock before it reaches the conveyor and while the tread stock remains dimensionally unstable following its extrusion.