Metal working – Method of mechanical manufacture – Of a slide fastener
Reexamination Certificate
2007-06-12
2007-06-12
Gerrity, Stephen F. (Department: 3721)
Metal working
Method of mechanical manufacture
Of a slide fastener
C493S214000, C493S927000, C383S064000
Reexamination Certificate
active
10924163
ABSTRACT:
Methods are provided for making slider-operated fasteners for use in reclosable plastic bags using at least a double index and dual unit operations. The methods involve forming two preseals, forming two notches within the preseals, applying two sliders into the previously formed notches, and applying two end stops proximate the previously applied sliders by having the various stations perform their respective functions, either simultaneously or at generally the same time, on different parts of the fastener spaced approximately at a double index. Also provided are methods of producing finished bags by applying the slider-operated fastener to a flat web of plastic film and conveying the web to a vertical or a horizontal form-fill-seal machine.
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Cappel Craig E.
Kolovich Nathan A.
Pistner Timothy W.
Provan Alexander R.
Thomas Toby R.
Durand Paul
Gerrity Stephen F.
Nixon & Peabody LLP
Pactiv Corporation
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