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. 06, 2009
Filed:
Jan. 17, 2005
Detlef Busch, Saarlouis, DE;
Albrecht Freynhofer, Schiffweiler, DE;
Gerhard Koch, Mandelbachtal, DE;
Michael Thull, Heusweiler, DE;
Detlef Busch, Saarlouis, DE;
Albrecht Freynhofer, Schiffweiler, DE;
Gerhard Koch, Mandelbachtal, DE;
Michael Thull, Heusweiler, DE;
Abstract
The invention relates to a device for drawing a film web, made from a thermoplastic plastic, comprising at least one driven roller (), driven at a speed Vand at least one second driven roller (), driven at a speed Vwhere V<V. The rollers () are serially arranged such that a drawing gap () is embodied between the two rollers (). A width-maintaining device is arranged in the drawing gap (), which mechanically grips both edges of the film web such that the width of the film web is essentially maintained during the longitudinal drawing in the drawing gap (). The invention further relates to a method for the longitudinal drawing of films which are drawn by means of said device.