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US 8,801,987 B2Granted
Method and apparatus for multi-stream metered extrusion
AssigneeSouthwire Company
InventorStephen Lee Spruell
Life of this patent
Estimating the term…
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 a single layer coating material to an extrusion head;
- expanding each of the plurality of metered, separate individual streams of the single layer coating material in a plurality of corresponding respective expansion regions of a flow joiner;
- joining the individual streams from the plurality of corresponding respective expansion regions of the flow joiner into a single layer coating flow with uniform thickness at an annular space of the flow joiner each of the plurality of corresponding respective expansion regions having a first end adjacent each of the plurality of corresponding respective receiving regions, each of the plurality of corresponding respective expansion regions having a second end adjacent the annular space, each of the plurality of corresponding respective expansion regions becoming progressively wider from the first end to the second end and remaining wider for extruding the single layer coating flow on to a substrate;
- and
- extruding the single layer coating flow on to the substrate.
2 more elements
A method for coating a substrate comprising:
- providing a plurality of metered, separate individual streams of coating material to an extrusion head;
- receiving the plurality of metered, separate individual streams of coating material at a plurality of corresponding respective receiving regions of a flow joiner within the extrusion head;
- expanding each of the plurality of metered, separate individual streams of coating material in a plurality of corresponding respective expansion regions of the flow joiner;
- joining the expanded plurality of metered, separate individual streams from the plurality of corresponding respective expansion regions of the flow joiner into a coating flow at an annular space of the flow joiner, each of the plurality of corresponding respective expansion regions having a first end adjacent each of the plurality of corresponding respective receiving regions, each of the plurality of corresponding respective expansion regions having a second end adjacent the annular space, the second end being wider than the first end, each of the plurality of corresponding respective expansion regions becoming progressively wider from the first end to the second end and remaining wider for extruding the coating flow on to a substrate;
- and
- extruding the coating flow on to the substrate.
3 more elements
A method for coating a substrate comprising:
- receiving a plurality of metered, separate individual streams of coating material at a plurality of corresponding respective receiving regions of a flow joiner within the extrusion head;
- expanding each of the plurality of metered, separate individual streams of coating material in a plurality of corresponding respective expansion regions of the flow joiner;
- joining the expanded plurality of metered, separate individual streams from the plurality of corresponding respective expansion regions of the flow joiner into a coating flow at an annular space of the flow joiner, each of the plurality of corresponding respective expansion regions having a first end adjacent each of the plurality of corresponding respective receiving regions, each of the plurality of corresponding respective expansion regions having a second end adjacent the annular space, each of the plurality of corresponding respective expansion regions having a respective acutely shaped bottom congruent with the annular space, each of the plurality of corresponding respective expansion regions becoming progressively wider from the first end to the second end and remaining wider for extruding the coating flow on to a substrate;
- and
- extruding the coating flow on to the substrate comprising an electrical cable assembly.
2 more elements
Dependencies are inferred from the claim text.