Method of extruding articles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 1, 2011
Grant Date -
Jul 6, 2006
app pub date -
Jun 14, 2005
filing date -
Dec 30, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
Methods for coextruding a predetermined initial melt stream through at least one profiled die having a nonlinear inlet opening and an outlet opening. The die insert is positioned so as to cause redistribution of at least a portion of the melt stream. The nonlinear melt stream formed at the nonlinear inlet opening converges within the die insert into a substantially more linear or rectangular melt stream at the die insert outlet opening. At the die insert outlet opening at least one or more regions of the melt stream vary in properties or material clue to the redistribution of the melt stream in the die insert. Articles extruded using the coextrusion methods are also described.
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