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. 20, 2009
Filed:
Oct. 31, 2007
Applicants:
Eike Wedell, Siegburg, DE;
Helmut Meyer, Troisdorf, DE;
Inventors:
Eike Wedell, Siegburg, DE;
Helmut Meyer, Troisdorf, DE;
Assignee:
Reifenhäuser GmbH & Co. Maschinenfabrik, Troisdorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 47/90 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and a device for producing a film made of a thermoplastic material, wherein a plastic melt is blown up into a film bubble and is shaped into a desired film by a calibrating arrangement, and a downstream arranged flattening device. For providing as contactless as possible a guidance, calibration and flattening, film guidance elements are used with a laminar uniform air cushion between the film guidance element and the surface of the film bubble, without contact between the surface of the film bubble and the film guidance element.