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04/24/08 | 6 views | #20080093018 | Prev - Next | USPTO Class 156 | About this Page  156 rss/xml feed  monitor keywords

Rotary bag machine with skirtless seal

USPTO Application #: 20080093018
Title: Rotary bag machine with skirtless seal
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 rotary drum includes at least one seal bar, having a single sealing zone, and an weakening zone disposed within the single sealing zone. The single sealing zone may be a heated perforator, includes a heating wire. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity. The sealing zone may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy. (end of abstract)
Agent: George R Corrigan - Appleton, WI, US
Inventors: Paul A. SELLE, Kenneth C. RADTKE, Charles H. SAUDER, Paul A. JOHNSON, Christopher Lee WHITE, Arvid R. JOHNSON, Gregory T. PRELLWITZ, Michael J. STICKNEY, Thomas C. JANSEN, Christopher A. SAUCIER, Terry L. LEITZKE, Bradley J. SCHMOLL, Chris SCHRLIES, Gregory JOHNSON, Scott GRASSE
USPTO Applicaton #: 20080093018 - Class: 156251000 (USPTO)


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