Rotating extrusion die with spray nozzle
AssigneeAmylex Corporation
InventorsHans G. Franke, Don R. Bittner
Life of this patent
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Abstract
An extrusion die for extruding biodegradable material, the extrusion die comprising: a mandrel; a nozzle extending from the mandrel; an outer member positioned near the mandrel; an extrusion orifice between the mandrel and the outer member; a member in communication with at least one defining member of the extrusion orifice, wherein the member is capable of producing relative movement between the outer member and the mandrel, wherein the relative movement has a component transverse to an extrusion direction of biodegradable material through the extrusion orifice; a flow control device which controls flow of biodegradable material through the extrusion die; and a positioning device which positions the outer member and the mandrel relative to each other.
Claims10
An extrusion die for extruding material, said extrusion die comprising:
- a cylindrical mandrel;
- a rotatable cylindrical outer ring positioned around said mandrel;
- an annular extrusion orifice between said mandrel and said outer ring;
- a spray nozzle extending from said cylindrical mandrel;
- a flow control device which controls flow of material through the extrusion die;
- and
- a positioning device to position said rotatable cylindrical outer ring and said mandrel relative to each other, wherein said positioning device modifies a geometry of said extrusion orifice.
An extrusion die for extruding material, said extrusion die comprising:
- a cylindrical mandrel;
- a cylindrical outer ring positioned around said mandrel, wherein the mandrel, the ring, or both are rotatable relative to each other;
- an annular extrusion orifice between said mandrel and said outer ring, wherein an inner surface of said outer ring is conically shaped;
- a spray nozzle extending from said cylindrical mandrel;
- a flow control device which controls flow of material through the extrusion die, wherein the flow control device comprises a mechanism which translates said outer ring to adjust the size of said annular extrusion orifice.
Dependencies are inferred from the claim text.