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:
Jun. 14, 2022
Filed:
Oct. 25, 2012
Applicant:
Windmoeller & Hoelscher KG, Lengerich, DE;
Inventors:
Martin Backmann, Lengerich, DE;
Juergen Linkies, Lienen, DE;
Ingo Ruebbelke, Geseke, DE;
Markus Bussmann, Essen, DE;
Assignee:
WINDMOELLER & HOELSCHER KG, Lengerich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 55/06 (2006.01); B29C 55/18 (2006.01); B29C 55/12 (2006.01); B29C 35/08 (2006.01);
U.S. Cl.
CPC ...
B29C 55/06 (2013.01); B29C 55/12 (2013.01); B29C 55/18 (2013.01); B29C 2035/0811 (2013.01); B29C 2035/0822 (2013.01);
Abstract
A device and a method for extending a film web along a longitudinal direction thereof include guiding the film web in a travel direction over several rollers, and extending the film web in at least one straining gap which is limited by at least two rollers operated with different circumferential speeds. The web is provided with a temperature gradient, which extends in the direction perpendicular relative to the longitudinal axis of the film web.