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.

Date of Patent:
Mar. 24, 1992

Filed:

Aug. 16, 1990
Applicant:
Inventors:

Franz Hoffacker, Langenfeld, DE;

Otto Wiedemann, Starnberg, DE;

Artur Klotz, Leverkusen, DE;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65B / ; B32B / ;
U.S. Cl.
CPC ...
156 69 ; 156196 ; 156216 ; 1562751 ; 1562753 ; 156290 ; 156291 ; 156324 ; 29806 ;
Abstract

In an improved embodiment, film cassettes comprising a substantially cylindrical casing, a film mouth of an upper lip and lower lip extending over the width of the casing, a film spool and end caps, the upper lip and lower lip of the film mouth being provided with sealing strips, contain the sealing strips for the lower lip bonded to the metal in such a way that the edge zones of the sealing strip on the narrow sides and the edge zones of the sealing strip on the longitudinal side are completely bonded to the metal on the lower lip while the edge zone of the sealing strip on the longitudinal side is completely or partly bonded to the metal inside the cassette and all or part of the inner region of the surface of the sealing strip is not bonded to the metal, so that 10 to 60% of the total surface area of the sealing strip is not bonded to the metal strip.


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