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:
Jan. 19, 2016
Filed:
Jul. 26, 2012
Paul A. Selle, Appleton, WI (US);
Kenneth C. Radtke, Appleton, WI (US);
Charles H. Sauder, Appleton, WI (US);
Paul A. Johnson, Menasha, WI (US);
Christopher Lee White, Watersmeet, MI (US);
Arvid R. Johnson, Appleton, WI (US);
Gregory T. Prellwitz, Black Creek, WI (US);
Michael J. Stickney, Appleton, WI (US);
Thomas C. Jansen, Appleton, WI (US);
Christopher A. Saucier, Yarmouth, MA (US);
Terry L. Leitzke, Hortonville, WI (US);
Bradley J. Schmoll, Appleton, WI (US);
Paul A. Selle, Appleton, WI (US);
Kenneth C. Radtke, Appleton, WI (US);
Charles H. Sauder, Appleton, WI (US);
Paul A. Johnson, Menasha, WI (US);
Christopher Lee White, Watersmeet, MI (US);
Arvid R. Johnson, Appleton, WI (US);
Gregory T. Prellwitz, Black Creek, WI (US);
Michael J. Stickney, Appleton, WI (US);
Thomas C. Jansen, Appleton, WI (US);
Christopher A. Saucier, Yarmouth, MA (US);
Terry L. Leitzke, Hortonville, WI (US);
Bradley J. Schmoll, Appleton, WI (US);
CMD Corporation, Appleton, WI (US);
Abstract
A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The drum includes at least one seal bar, having a first sealing zone and an adjacent weakening zone. The weakening zone may be a heated perforator, heating wire, and/or may create an auxiliary sealed area. The heating wire is powered by a source of power at an adjustable voltage or magnitude, and/or pulsed, and/or with a feedback loop. The heating wire may make intermittent contact with the web and/or be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.