公开(公告)号：US20190202088A1

公开(公告)日：2019-07-04

申请号：US16325951

申请日：2017-07-27

Applicant: Coperion GmbH

Inventor： Ulrich CONRAD ,  Norbert KERN ,  Markus SCHMUDDE ,  Bernhard STÖHRER ,  Heiko HORNBERGER

IPC: B29B9/12

CPC classification number: B29B9/12 ,  B29B9/065 ,  B29B9/16 ,  B29B2009/125 ,  B29C48/0022 ,  B29C48/04 ,  B29C48/40 ,  F26B17/00 ,  F26B2200/08

Abstract: A device for producing dyed plastic granulate and undyed plastic granulate includes a multi-shaft screw extruder and an underwater pelletizing installation. A granulate changeover unit which separates the dyed plastic granulate from the undyed plastic granulate is disposed in a conveying direction downstream of the underwater pelletizing installation. The dyed plastic granulate is separated from the pelletizing water via a first separator installation, and the undyed plastic granulate is separated from the pelletizing water via a second separator installation. The separator installations are disposed so as to be mutually parallel. The device enables a simple, flexible and economical selective production of the dyed plastic granulate and the undyed plastic granulate.

公开(公告)号：US20190168418A1

公开(公告)日：2019-06-06

申请号：US16326027

申请日：2017-07-27

Applicant: Coperion GmbH

Inventor： Ulrich CONRAD ,  Norbert KERN ,  Markus SCHMUDDE ,  Bernhard STÖHRER ,  Heiko HORNBERGER

IPC: B29B7/60 ,  B29B9/06 ,  B29B7/48 ,  B29B7/80 ,  B29B7/72 ,  B29B7/88 ,  B29C48/25 ,  B29C48/27 ,  B29C48/285 ,  B29C48/385 ,  B29C48/39

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.