Draw-off device for webs of plastic foil tubing

Details Draw-off device for webs of plastic foil tubing Draw-off device for webs of plastic foil tubing

B - Operations, Transporting

29

C

B29C 55/28 (2006.01)

Patent

CA 2285404

A draw-off device for webs of plastic foil tubing produced by an extruder in the blowing process, having a flattening device for the tubing web conveyed with an expanded round cross-section and with at least one pivoted guide roller as well as at least one air turning bar supported so as to be non-rotatable for conveying the flattened tubing web, whereby the air turning bar is provided with an arrangement of air outlet openings in an area of its peripheral surface about which the flattened tubing web is wound during conveyance, characterized therein that the air turning bar exhibits, at a constant outside diameter, a curved course of travel in axial direction and defining a curvature plane with a concave and a convex side of the air turning bar and the air outlet openings are arranged on the concave side of the air turning bar.

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