Method and Apparatus for Multi-Stream Metered Extrusion
AssigneeSouthwire Company
InventorStephen Spruell
Life of this patent
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Abstract
An extrusion apparatus for extruding multiple streams of extrusion material as extruded end-products and in the coating of substrates. A flow joiner in an extrusion head combines multiple metered streams such as from a gear pump, into a uniform extrusion flow.
Claims24
A method for coating a substrate comprising:
- providing a plurality of metered, separate individual streams of coating material to an extrusion head;
- joining the individual streams from expansion regions of a flow joiner into a coating flow with uniform thickness at an annular surface region of the flow joiner;
- and extruding the coating flow on to a substrate.
A method for extrusion comprising:
- providing a plurality of metered, separate individual streams of extrusion material from one or more gear pumps to an extrusion head;
- joining the individual streams into an annular flow with uniform thickness;
- tapering the annular flow to a tip and die;
- and extruding the annular flow.
An extrusion apparatus comprising a plurality of individual stream inlets coupled to a flow joiner, wherein the flow joiner includes a plurality of extrusion material inlets communicating with a plurality of expansion regions that expand to an annular surface region communicating with a downstream tapered region.
Dependencies are inferred from the claim text.