B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
B65B 61/18 (2006.01)
Patent
CA 2435696
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.
Finlayson & Singlehurst
Illinois Tool Works Inc.
LandOfFree
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