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:
Jan. 10, 2012
Filed:
Nov. 24, 2005
Claude Guenanten, Darmstadt, DE;
Christoph Steinfels, Weiterstadt, DE;
Herbert Groothues, Weiterstadt, DE;
Christoph Krohmer, Moetzingen, DE;
Helmut Haering, Reinheim, DE;
Detlef Birth, Dieburg, DE;
Christopher Neuroth, Gross-Zimmern, DE;
Michael Meier-kaiser, Alsbach-Haehnlein, DE;
Walter Meon, Darmstadt, DE;
Claude Guenanten, Darmstadt, DE;
Christoph Steinfels, Weiterstadt, DE;
Herbert Groothues, Weiterstadt, DE;
Christoph Krohmer, Moetzingen, DE;
Helmut Haering, Reinheim, DE;
Detlef Birth, Dieburg, DE;
Christopher Neuroth, Gross-Zimmern, DE;
Michael Meier-Kaiser, Alsbach-Haehnlein, DE;
Walter Meon, Darmstadt, DE;
Röhm GmbH, Darmstadt, DE;
Abstract
The invention relates to a method for producing a thermoplastic plastic film. According to said method, the thermoplastic plastic is melted and transported in an extrusion installation comprising an extruder, an extrusion nozzle with a wide-slot delivery opening and a chill roll, which is fixed to a roll system and then leaves the delivery opening of the extrusion nozzle in the form of a flat melted web. Said melted web is then applied to the chill roll and is cooled. The invention is characterised in that it uses an extrusion installation, in which the distance between the delivery opening of the extrusion nozzle and the surface of the cooled roll does not vary by more than +/−50 μm during the operating time. The invention also relates to a film of this type and to uses of the latter.