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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 12611799 B1

PDFFull Text
Date of Patent:
Apr. 28, 2026

Filed:

Sep. 06, 2021

Method and device for processing polycondensates

Applicant:

Sml Maschinengesellschaft M.b.h., Redlham, AT;

Inventors:

Julian Leingartner, Puchkirchen, AT;

Hans-Jürgen Luger, Linz, AT;

Max Philip Lutz, Altmuenster, AT;

Assignee:

SML MASCHINENGESELLSCHAFT M.B.H., Redlham, AT;

Attorneys:

LUCAS & MERCANTI, LLP

Klaus P. Stoffel

Primary Examiner:

Tae H Yoon

Int. Cl.
CPC ...
B29B 7/42 (2006.01); B29B 7/48 (2006.01); B29B 7/60 (2006.01); B29B 7/74 (2006.01); B29B 7/84 (2006.01); B29B 7/86 (2006.01); C08J 3/12 (2006.01); B29K 67/00 (2006.01); B29K 105/26 (2006.01);
U.S. Cl.
CPC ...
B29B 7/426 (2013.01); B29B 7/48 (2013.01); B29B 7/603 (2013.01); B29B 7/748 (2013.01); B29B 7/845 (2013.01); B29B 7/86 (2013.01); C08J 3/12 (2013.01); B29K 2067/003 (2013.01); B29K 2105/26 (2013.01); C08J 2367/03 (2013.01);
Abstract

A method for processing polycondensates, wherein the material in the form of granules or recyclate is processed to form a melt, the method including the following steps: a) feeding the material into a vacuum lock where the material is held below atmospheric pressure; b) conveying the material from the vacuum lock into a first extruder having a filling region and a feed zone that are held below atmospheric pressure, wherein the material is at least partially melted in the first extruder; c) conveying the melted material from the first extruder into a second, twin-screw extruder with two screws that turn in the opposite direction. The second extruder has at least one degassing zone and a metering zone that follows in the conveying direction. The melted material is degassed in the degassing zone and the melted material is pressurized in the metering zone and is output out of the second extruder.

Find Patent Forward Citations

Leingartner, Julian. (2026). Method and device for processing polycondensates (U.S. Patent No. 12611799). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12611799

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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