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. 30, 1991
Filed:
Apr. 24, 1990
Applicant:
Inventors:
Gerald-Wolfgang Borck, Ludwigshafen, DE;
Manfred Ell, Rheinau, DE;
Hans-Dieter Erhardt, Renchen, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ; B65D / ; B65D / ; B43M / ;
U.S. Cl.
CPC ...
206387 ; 206605 ; 206608 ; 206633 ; 206613 ;
Abstract
Film packaging for right parallelepiped articles, in which the film parts are welded by heat sealing, is provided with a tear aid in the form of an additional, advantageously arranged imprint which prevents heat sealing in one or more desired areas. The reliability of film removal is additionally increased by means of a plurality of oblique prints and imprint areas one covering the other. The packaging can be used for articles of all types where complete removal of all packaging parts is necessary, for example for tape cassettes, in particular for magnetic tape cassettes.