Package making – Methods – Forming a cover adjunct or application of a cover adjunct to...
Reexamination Certificate
2006-10-03
2006-10-03
Huynh, Louis (Department: 3721)
Package making
Methods
Forming a cover adjunct or application of a cover adjunct to...
C053S133400, C053S139200, C053S545000
Reexamination Certificate
active
07114309
ABSTRACT:
Methods and apparatus for making reclosable packages having slider-actuated string zippers. More specifically, one method comprises the following steps: (a) providing an elongated web of packaging film having first and second edges that are substantially mutually parallel; (b) joining a back of a first flangeless zipper strip to the web along a first band-shaped zone that is substantially parallel to the first edge; (c) joining a back of a second flangeless zipper strip to the web along a second band-shaped zone that is substantially parallel to the second edge; (d) folding the web to form a first folded side and a second folded side interconnected by a folded section, the first and second folded sides being substantially vertical and the folded section being at the bottom, and the first and second flangeless zipper strips being substantially aligned with each other; (e) joining the first and second folded sides to each other along lines substantially transverse to the first and second flangeless zipper strips and spaced at regular intervals to form cross seals with pockets therebetween; (f) loading product into each pocket; and (g) inserting sliders at spaced intervals along the first and second flangeless zipper strips, one slider per pocket.
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Huynh Louis
Illinois Tool Works Inc.
Ostrager Chong & Flaherty & Broitman P.C.
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