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. 25, 2008
Filed:
Jul. 21, 2004
Lawrence Share, Skokie, IL (US);
David J. Matthews, Gilman, IL (US);
Donald L. Crevier, Essex, IL (US);
Lawrence Share, Skokie, IL (US);
David J. Matthews, Gilman, IL (US);
Donald L. Crevier, Essex, IL (US);
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
A reclosable bag that can be hermetically sealed. The bag comprises a pair of zipper strips that are joined in respective zones without substantial deformation of the longitudinal profiled closure elements. These zones of zipper strip joinder assist in providing a leakproof transition from the openable section of the zipper to the corner seals, where the longitudinal profiled closure elements are either substantially deformed (e.g., crushed) or absent. The method of manufacture involves the steps of ultrasonically welding a wide area and then thermally crushing a narrower area overlapping the wide welded area to form leakproof zipper joints. This method can be applied to string (flangeless) zippers as well as flanged zippers.