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:
Nov. 12, 1991
Filed:
Feb. 23, 1990
Hugo Boeckmann, Arlington Heights, IL (US);
Daniel P McDonald, Arlington Heights, IL (US);
Zip-Pak Incorporated, Northbrook, IL (US);
Abstract
Zippered material for packages comprising a zipper strip having longitudinally extending complementary reclosable interlockable zipper profiles with a web separating the profiles. In one aspect, the strip is notched out to the web from opposite sides at package section intervals and with limited respective areas of the web providing links connecting the sections of the strip at the notches, the links being sealed and flattened onto package making sheet material. In another aspect, the web and the material have matching lines of weakening, the web is hermetically bonded to the material and at least the line of weakening of the web is hermetically sealed to prevent leakage through the lines of weakening, but enabling tear-open separation along the lines of weakening.