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. 30, 1993
Filed:
Nov. 08, 1991
Lawrence W Wirth, Neenah, WI (US);
Wayne M Wegner, Appleton, WI (US);
Mladomir Tomic, Appleton, WI (US);
Raymond Buchko, Appleton, WI (US);
Johann Natterer, Bavaria, DE;
Reynolds Consumer Products, Inc., Appleton, WI (US);
Abstract
A method of forming a recloseable package using special profile strips, the strips themselves and a resulting package are disclosed. The profile strips have a flange element and a recloseable means element, and two mated profile strips are provided with a heat barrier means. The method comprises the steps of providing mated top and bottom profile strips, providing top and bottom package films on opposite sides of the mated strips and applying heat and pressure to the films adjacent the flanges sufficient to simultaneously form heat seals respectively between the top film and the top profile strip flange and between the bottom film and bottom profile strip flange. The heat barrier means may comprise a thickened flange element, buffer strip or a coextrusion of high temperature resin on the inside layer of the flange element. The heat barrier means prevents the flanges from fusing together during the formation of flange-film seals.