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.:
Date of Patent:
Mar. 25, 2025
Filed:
Nov. 19, 2019
Applicant:
Bb Engineering Gmbh, Remscheid, DE;
Inventor:
Klaus Schäfer, Remscheid, DE;
Assignee:
BB Engineering GmbH, Remscheid, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29B 17/02 (2006.01); B01D 19/00 (2006.01); B01D 36/00 (2006.01); B29B 9/02 (2006.01); B29C 48/69 (2019.01); B29C 48/694 (2019.01);
U.S. Cl.
CPC ...
B29B 17/02 (2013.01); B01D 19/0031 (2013.01); B01D 36/001 (2013.01); B29B 9/02 (2013.01); B29C 48/69 (2019.02); B29C 48/694 (2019.02); B29B 2017/0217 (2013.01); B29B 2017/0255 (2013.01);
Abstract
Techniques recycle plastics in multiple successive process steps. A polymer, preferably a recyclable material, is melted using a discharge extruder, filtered using a first filter device under a positive pressure atmosphere, filtered and degassed using a degassing device, and discharged using a discharge extruder. The degassing device has at least one filter element and a vacuum chamber with a negative pressure atmosphere for filtering and degassing purposes, wherein the plastic melt can be conducted into the negative pressure atmosphere of the vacuum chamber through the filter element.