Abstract: Apparatus for coating wire including a coating composition dispensing means and a feed means extending therefrom and to at least one positive displacement delivery unit associated with at least one wire coating die. The die has an outlet for extruding coating composition around a wire and a haul off device is provided for the coated wire. Means are also provided between the wire coating die and the haul off device and arranged positively to cool, cure or set the coating composition applied to the wire at the coating die. Means synchronize each the positive displacement delivery unit and its associated haul off device.

Abstract: Apparatus for extruding plastic materials through a die and including a screw extruder in which compounding is to be carried out, a feed means for the compounded material, and a positive displacement delivery means through which compounded materials can be passed to said die, said positive displacement delivery means serving to meter the compounded materials and generate the required extrusion pressure at the die head.