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:
Oct. 12, 2021
Filed:
May. 10, 2016
Applicant:
Windmöller & Hölscher KG, Lengerich, DE;
Inventor:
Torsten Schmitz, Greven, DE;
Assignee:
Windmöller & Hölscher KG, Lengerich, DE;
Primary Examiner:
Int. Cl.
CPC ...
B29C 41/26 (2006.01); B29C 41/50 (2006.01); B29C 41/28 (2006.01); B29C 41/52 (2006.01); B29C 48/88 (2019.01); B29C 48/08 (2019.01);
U.S. Cl.
CPC ...
B29C 41/50 (2013.01); B29C 41/26 (2013.01); B29C 41/28 (2013.01); B29C 41/52 (2013.01); B29C 48/08 (2019.02); B29C 48/916 (2019.02); B29C 48/917 (2019.02);
Abstract
The present invention relates to a device () for the generation of a negative pressure for stabilizing a melt strip () in the area of a transport device () of a film machine () particularly with a production process of a plastic film () comprising: the first influence area () is assignable to at least one main area () of the melt strip () and the second influence area () is assignable to at least one edge area () of the melt strip () adjacent to the main area (), and wherein the first negative pressure differs from the second negative pressure in order to effect a stabilization of the melt strip ().