Colored polymeric molded bodies, and method and device for producing the molded bodies
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United States of America Patent
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Issued Date -
Aug 21, 2014
app pub date -
Sep 7, 2012
filing date -
Sep 15, 2011
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Abandoned
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Abstract
A method is provided for producing colored molded bodies based on the following steps: (a) plasticising a polymeric material and blending the material with one or more dyes to form a molding compound by means of a gelation unit equipped with a metering apparatus for dyes; (b) optionally temporarily storing the molding compound obtained in step (a); (c) charging a molding device with the molding compound; and (d) producing the molded body; wherein the ratio of dye to polymeric material is automatically regulated using a colorimeter and an electronic control, and in step (a) color values are measured at the molding compound located in the gelation unit and transmitted as a signal to the electronic control.
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