Method for adjusting flow rate of material which does not flow well to plastics extrusion machine comprises weighing amount of material in feed hopper and pushing flexible sections of hopper walls inwards to increase rate of flow

摘要

Method for adjusting the flow rate of material (3) which does not flow well through a conveyor screw (4) to a plastics extrusion machine comprises periodically weighing the amount of material in the hopper (1c) feeding the screw and calculating the throughput. Flexible sections (1d) in the hopper walls are pushed inwards using a mechanical, pneumatic or hydraulic system to increase the rate of flow.