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:
Aug. 30, 2005
Filed:
Nov. 25, 2003
Frank Mathew Brenkus, McKinney, TX (US);
Anthony Robert Knoerzer, Plano, TX (US);
Garrett William Kohl, Allen, TX (US);
Steven Kenneth Tucker, Hurst, TX (US);
Frank Mathew Brenkus, McKinney, TX (US);
Anthony Robert Knoerzer, Plano, TX (US);
Garrett William Kohl, Allen, TX (US);
Steven Kenneth Tucker, Hurst, TX (US);
Frito-Lay North America, Inc., Plano, TX (US);
Abstract
A double-bag package, and method for manufacturing same, constructed by modification to existing vertical form and fill packaging machines and perforation knives. In a preferred embodiment, the invention involves producing a double-bag package from a single sheet of packaging film by feeding a roll of film having graphics printed sideways rather than vertically into a vertical form, fill and seal packaging machine and using a novel perforating/cutting knife to alternately cut and perforate transverse seals. The perforating/cutting knife has teeth in the shape of oblique triangular pyramids, with each tooth having three cutting edges. The perforating/cutting knife produces self-correcting T-shaped perforation patterns capable of capturing and redirecting errant tears for fail-safe directional separation.