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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 10906215 B1

PDFFull Text
Date of Patent:
Feb. 02, 2021

Filed:

Apr. 28, 2014

Method for producing a foamed body by extrusion and extrusion device for producing a foamed body

Applicant:

Gneuss Gmbh, Bad Oeynhausen, DE;

Inventors:

Detlef Gneuss, Bad Oeynhausen, DE;

Stephan Gneuss, Bad Oeynhausen, DE;

Daniel Gneuss, Charlotte, NC (US);

Frank Van Lück, Kaarst, DE;

Assignees:

GNEUSS GMBH, Bad Oeynhausen, DE;

Other;

Attorney:

RatnerPrestia

Primary Examiner:

Seyed Masoud Malekzadeh

Int. Cl.
CPC ...
B29C 44/00 (2006.01); B29C 44/34 (2006.01); B29C 48/00 (2019.01); B29C 48/82 (2019.01); B29C 48/385 (2019.01); B29C 48/435 (2019.01); B29B 7/48 (2006.01); B29C 44/60 (2006.01); B29C 44/50 (2006.01); B29C 48/80 (2019.01); B29C 48/43 (2019.01); B29C 48/44 (2019.01); B29K 101/12 (2006.01); B29C 48/07 (2019.01); B29C 48/375 (2019.01); B29K 105/04 (2006.01);
U.S. Cl.
CPC ...
B29C 44/3415 (2013.01); B29B 7/485 (2013.01); B29C 44/507 (2016.11); B29C 44/60 (2013.01); B29C 48/0012 (2019.02); B29C 48/385 (2019.02); B29C 48/43 (2019.02); B29C 48/435 (2019.02); B29C 48/44 (2019.02); B29C 48/82 (2019.02); B29C 48/832 (2019.02); B29C 48/834 (2019.02); B29B 7/487 (2013.01); B29C 48/07 (2019.02); B29C 48/388 (2019.02); B29K 2101/12 (2013.01); B29K 2105/04 (2013.01); B29K 2995/0045 (2013.01);
Abstract

A method and an extrusion device for producing a foamed body. A plastics melt is produced inside the casing of a first extruder. The plastics melt is conveyed to an outlet die of a second extruder. The conveyed plastics melt has a foaming agent and expands after being fed through the outlet die. Before the plastics melt is fed through the outlet die, variations in temperature between different radial positions over the cross-section of the plastics melt are reduced by an extruder screw device which has a number of screw spindles distributed around the periphery. The plastics melt which is thus thermally homogeneous is fed through the outlet die.

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