Advancing material of indeterminate length – By orbitally traveling material-engaging surface – Including details of roll or mount
Reexamination Certificate
2005-06-07
2005-06-07
Matecki, Kathy (Department: 3654)
Advancing material of indeterminate length
By orbitally traveling material-engaging surface
Including details of roll or mount
C226S175000, C226S194000, C156S580000, C156S308400, C053S450000
Reexamination Certificate
active
06902091
ABSTRACT:
A method and an apparatus for automatically feeding slider-zipper assemblies to a station where the slider-zipper assemblies can be attached to bag material, such as thermoplastic film. The apparatus includes a slider guide having a channel running the length thereof. The channel has a cross section that allows passage therethrough of sliders slidably mounted to a tape of connected slider-zipper assemblies. A tape drive mechanism is located at the outlet of the slider guide. The tape drive mechanism includes a pair of rollers that form a nip therebetween. The zipper flanges of the tape are threaded through the nip. The rollers have respective grooves that form a space for passage of the sliders as the tape is advanced by the rollers. The zipper tape with sliders exits the tape drive mechanism and is drawn into a zipper flange sealing position by a tape transfer assembly comprising a bank of drive rollers having silicone surfaces in contact with the zipper tape. The drive rollers have peripheral grooves that oppose a longitudinal groove in a shelf, the zipper profile being captured between the opposing grooves.
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Illinois Tool Works Inc.
Langdon E.
Ostrager Chong & Flaherty & Broitman P.C.
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