Method and apparatus for controlling zipper registration in...

Details Method and apparatus for controlling zipper registration in... Method and apparatus for controlling zipper registration in...

2005-07-26

2005-07-26

Sipos, John (Department: 3721)

Package making

Methods

Forming a cover adjunct or application of a cover adjunct to...

C053S453000, C053S133400, C053S559000

Reexamination Certificate

active

06920737

ABSTRACT:
Methods and apparatus for controlling the registration of one elongated continuous structure (e.g., plastic zipper) with attachments or formed features (e.g., sliders or pre-seals) as it is fed to a sealing station, where it is joined to another elongated continuous structure (e.g., packaging film) with formed features (e.g., thermoformed pockets). The latter elongated continuous structure will be intermittently advanced through the machine, pulling the former elongated continuous structure joined thereto forward. Registration is accomplished by tacking the respective elongated continuous structures together while the respective features on the elongated continuous structures are in proper registration. After tacking, the respective portions of the elongated continuous structures immediately downstream of the tack zone are advanced to the sealing station in proper registration.

REFERENCES:
patent: 4437293 (1984-03-01), Sanborn, Jr.
patent: 4826065 (1989-05-01), Natterer et al.
patent: 4969309 (1990-11-01), Schwarz et al.
patent: 5105603 (1992-04-01), Natterer
patent: 6526726 (2003-03-01), Strand et al.
patent: 6701695 (2004-03-01), Douglas
patent: 6804935 (2004-10-01), Schneider et al.

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