Method for sealing zipper assembly to bag making film at...

Flexible bags – With closure – Independent closures for single access opening

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C383S063000, C383S064000, C383S204000

Reexamination Certificate

active

06910805

ABSTRACT:
A method for sealing a zipper assembly to bag making film at three or more points. The zipper assembly comprises a short zipper flange and a long zipper flange. The short flange is joined to one wall of the package while the long flange is joined to both walls of the package to define a product space in which the product is contained. Both the short and long zipper flanges are sealed to the bag making film at a first sealing station prior to folding of the film. After folding, the long zipper flange is sealed at one or more zones of joinder to the other side of the folded film. If the zipper assembly is attached in proximity to the fold line, then the second sealing operation is performed before filling and the bag is filled through the package bottom. If the zipper assembly is attached near the edge of the web of bag making film, then the second sealing operation is performed after the filling operation.

REFERENCES:
patent: 5023122 (1991-06-01), Boeckmann et al.
patent: 5063069 (1991-11-01), Van Erden et al.
patent: 5509735 (1996-04-01), May
patent: 5660479 (1997-08-01), May et al.
patent: 6138439 (2000-10-01), McMahon et al.
patent: 6183134 (2001-02-01), Malin
patent: 6354738 (2002-03-01), Buckman et al.
patent: 6517242 (2003-02-01), Buchman
patent: 6595690 (2003-07-01), Machacek

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for sealing zipper assembly to bag making film at... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for sealing zipper assembly to bag making film at..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for sealing zipper assembly to bag making film at... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3505736

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.