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:
Jun. 22, 2004
Filed:
Feb. 19, 2003
David J. Matthews, Gilman, IL (US);
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
A method for attaching a reclosable zipper strip ( ) onto a sheet of thermoplastic film material ( ) in the production of packages includes an apparatus ( ) which has two guide plates ( ) that define a guide space ( ). The apparatus ( ) includes a pair of hole punches ( ), one on either side of the guide space ( ), and;a knife ( ) which severs lengths of the zipper strip ( ) in the guide space. The hole punches ( ) and the cutting knife ( ) are separated from one another by a distance equal to the length of the zipper strip ( ) being attached to the sheet ( ). The hole punches remove the flanges ( ) from a preselected amount of the zipper strip ( ) upstream of the knife ( ).