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:
Mar. 14, 2000
Filed:
Mar. 03, 1998
Applicant:
Inventors:
Andreas Rutz, Lindau, DE;
Thomas Fischer, Lindau, DE;
Assignee:
Lindauer DORNIER Gesellschaft mbH, Lindau, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425 71 ; 2641 / ; 4253781 ; 425461 ;
Abstract
The cooling of extruded melt film is improved by passing the film sequentially through two cooling baths one arranged above the other. A cooling roller is rotatably mounted in a first lower bath and passes with its cylindrical wall through a second upper bath communicating with the first bath in such a way that a cooling medium level in the second bath is maintained at a higher elevation than a cooling medium level in the first bath that has a discharge positioned at an elevation for maintaining a desired cooling medium level in the first bath.