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:
Sep. 15, 2020
Filed:
Oct. 15, 2014
Applicant:
Reifenhäuser Gmbh & Co. KG Maschinenfabrik, Troisdorf, DE;
Inventor:
Christoph Lettowsky, Aachen, DE;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 55/28 (2006.01); B29C 48/10 (2019.01); B29L 23/00 (2006.01); B29C 48/88 (2019.01); B29C 48/90 (2019.01);
U.S. Cl.
CPC ...
B29C 55/28 (2013.01); B29C 48/10 (2019.02); B29C 48/908 (2019.02); B29C 48/913 (2019.02); B29C 48/914 (2019.02); B29C 48/9135 (2019.02); B29L 2023/001 (2013.01);
Abstract
In a method for manufacturing blown film web on a blown film line, film is heated above the takeoff device and then treated mechanically. This allows the film to be brought from initial heat to an easy-to-process temperature level with little energy. A horizontally oriented treatment roll path is provided between the takeoff and a reversing device is arranged above the takeoff. In both aspects, controlling is performed to achieve a uniform film gauge after stretching.