Procedure for Extrusion of Plastic Material and Extruder
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United States of America Patent
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Issued Date -
Nov 18, 2010
app pub date -
Oct 22, 2008
filing date -
Oct 22, 2007
priority date (Note) -
Abandoned
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Abstract
The invention relates to a method for extruding plastic material using a screw-type extruder (S), wherein a first pressure (P.sub.1) of the material to be extruded is measured in at least one location in the feed region (EB) of the at least one screw (2) and/or in the melting region (A) of the housing (1), the plastic material agglomerating and/or softening and being present in and not yet, in particular not completely, melted state and/or being present not yet homogeneously as a melt in said location or in said melting region. According to the invention, the material supply to the extruder (S) and/or the charge quantity is measured or controlled as a function of the measured first pressure (P1).
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