Extrusion Method and Extrusion Apparatus
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United States of America Patent
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Issued Date -
Feb 5, 2009
app pub date -
Jul 3, 2006
filing date -
Jul 4, 2005
priority date (Note) -
Abandoned
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Abstract
An extrusion apparatus is used for extruding material through a nozzle (10) for forming a product In the nozzle (10), the material is pressed around rods (9) so that tubular cavities (13) are formed in the wall of the product. The rods (9) are hollow and the apparatus comprises channels (14) connected to the hollow rods (9) to enable flow in the tubular cavities (13).
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