Method and device for manufacturing bag with clamping device

Details Method and device for manufacturing bag with clamping device Method and device for manufacturing bag with clamping device

2010-03-03

2011-12-06

Rada, Rinaldi I. (Department: 3721)

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

C053S133400, C053S139200

Reexamination Certificate

active

08070662

ABSTRACT:
A tape3, 4with a zipper member and a bag film5, 6are continuously moved by rotation of a rotary drum32while being overlaid with each other such that the tape3, 4travels in a tape introducing groove33for a tape with a zipper member, the groove formed along a circumferential direction of the rotary drum32. The tape3, 4with the zipper member is continuously welded to the bag film5, 6on a circumferential surface of the rotary drum32by a seal bar35that has a welding surface34in a curved shape corresponding to a circumferential surface shape of the rotary drum32. The whole tape3, 4with the zipper member is accommodated in the tape introducing groove33for the tape with the zipper member and a seal surface of a tape body31, 41is adapted to be substantially flush with the circumferential surface of the rotary drum32, so that heat applied from the seal bar35to the tape3, 4with the zipper member is restrained from transferring to the rotary drum32.

REFERENCES:
patent: 4277241 (1981-07-01), Schulze
patent: 4341575 (1982-07-01), Herz
patent: 4372793 (1983-02-01), Herz
patent: 6640519 (2003-11-01), Goodwin
patent: 6810641 (2004-11-01), Ausnit
patent: 6840897 (2005-01-01), Knight
patent: 6942609 (2005-09-01), Knight
patent: 03-36825 (1991-04-01), None
patent: 09-039121 (1997-02-01), None
patent: 2003-155045 (2003-05-01), None

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