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:
Apr. 14, 1981
Filed:
Nov. 24, 1978
Applicant:
Inventors:
Heinz Vetter, Rossdorf, DE;
Franz Wenzel, Darmstadt, DE;
Assignee:
Rohm GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
15624413 ; 15624414 ; 15624427 ; 156285 ; 156498 ; 156500 ; 264563 ; 264565 ; 264566 ;
Abstract
What is disclosed are methods and apparatus for coating a hollow synthetic resin tube with a pre-formed film coating by applying the film coating to an exterior surface of such a tube directly after extrusion, while the resin thereof is thermoplastic, and then passing them through a shaping channel while maintaining a modest pressure differential between the interior and exterior of the tube, whereby the film coating and tube are adhered by the compression thereof against the walls of the shaping channel.