Method and apparatus for making bags

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9751273
SERIAL NO

12159979

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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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 first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. 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, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.

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First Claim

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Family

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Patent Owner(s)

Patent OwnerAddress
CMD CORPORATION2901 EAST PERSHING STREET APPLETON WI 54911

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jansen, Thomas C Appleton, US 21 194
Johnson, Arvid R Appleton, US 9 76
Johnson, Paul A Menasha, US 72 1539
Leitzke, Terry L Hortonville, US 7 72
Prellwitz, Gregory T Black Creek, US 17 131
Radtke, Kenneth C Appleton, US 9 81
Saucier, Christopher A Yarmouth Port, US 9 78
Sauder, Charles H Appleton, US 17 135
Schmoll, Bradley J Appleton, US 9 72
Selle, Paul A Appleton, US 37 295
Stickney, Michael J Appleton, US 15 90
White, Christopher Lee Watersmeet, US 13 120

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