B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/748
B29C 47/08 (2006.01)
Patent
CA 1306089
METHOD AND APPARATUS FOR AN OSCILLATING PINCH ROLL ASSEMBLY UTILIZED IN THE EXTRUSION OF BLOWN FILMS Abstract of the Disclosure In one embodiment, the oscillating pinch roll assembly or web handling apparatus includes a rotatable spindle having an input which accepts the tubular web. A pinch roller is mounted at the input. A plurality of rollers are circumferentially disposed around the pinch roller and the axis of rotation of those rollers is para- llel to the center line of the tubular web. A turning bar is disposed in the interior of the spindle and turns the flattened web exiting the pinch rollers 90 degrees and feeds the horizontal web to a first roller of the plurality of rollers disposed at the periphery of the spindle. The traveling web always passes over this first roller. By rotating the spindle in an oscillatory man- ner about the center axis of the tubular web, the horizon- tally traveling, flat web is wound and unwound around the outer periphery of the spindle and is fed to a fixed idler roller.
573476
Remver S.a.
Ridout & Maybee Llp
LandOfFree
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