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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11440221 B1

PDFFull Text
Date of Patent:
Sep. 13, 2022

Filed:

Jul. 27, 2017

Device and method for producing a dyed and an undyed plastic melt

Applicant:

Coperion Gmbh, Stuttgart, DE;

Inventors:

Ulrich Conrad, Elze, DE;

Norbert Kern, Tamm, DE;

Markus Schmudde, Murr, DE;

Bernhard Stöhrer, Pleidelsheim, DE;

Heiko Hornberger, Hessigheim, DE;

Assignee:

Coperion GmbH, Stuttgart, DE;

Attorney:

McGlew and Tuttle, P.C.

Primary Examiner:

Charles Cooley

Int. Cl.
CPC ...
B29B 7/60 (2006.01); B29B 7/48 (2006.01); B29B 7/72 (2006.01); B29B 7/80 (2006.01); B29B 7/88 (2006.01); B29B 9/06 (2006.01); B29C 48/285 (2019.01); B29C 48/25 (2019.01); B29C 48/27 (2019.01); B29C 48/385 (2019.01); B29C 48/39 (2019.01); B29B 7/74 (2006.01); B29B 7/40 (2006.01); B29B 9/12 (2006.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
B29B 7/603 (2013.01); B29B 7/404 (2013.01); B29B 7/487 (2013.01); B29B 7/488 (2013.01); B29B 7/72 (2013.01); B29B 7/7461 (2013.01); B29B 7/802 (2013.01); B29B 7/88 (2013.01); B29B 9/06 (2013.01); B29C 48/2526 (2019.02); B29C 48/2692 (2019.02); B29C 48/271 (2019.02); B29C 48/2715 (2019.02); B29C 48/297 (2019.02); B29C 48/385 (2019.02); B29C 48/39 (2019.02); B29B 9/12 (2013.01); B29C 2948/926 (2019.02); B29C 2948/9239 (2019.02); B29C 2948/92095 (2019.02); B29C 2948/92457 (2019.02); B29C 2948/92828 (2019.02); B29K 2105/0032 (2013.01);
Abstract

A device for producing a dyed plastic melt and an undyed plastic melt includes a multi-shaft screw extruder, a first metering installation, a second metering installation, and a control installation for selecting between a first operating mode for producing the dyed plastic melt and a second operating mode for producing the undyed plastic melt. The first metering installation serves for feeding an undyed plastic material through a first infeed opening into a housing of the multi-shaft screw extruder, and the second metering installation serves for feeding at least one color granulate through a second infeed opening into the housing. The plastic material is fed exclusively by way of the first infeed opening such that residual color granulate or dyeing agent contained therein, respectively, which is still located in the second metering installation or in the region of the second infeed opening does not contaminate the undyed plastic melt.

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