Flattening and take-off apparatus for processing a plastic film web by blowmolding by means of a stationary film-blowing head
CA 1256256 A · Owner: Windmoller & Holscher · Inventors: Peters, Rudolf; Upmeier, Hartmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Flattening and take-off apparatus for processing a plastic film web made by blowmolding by means of a stationary film-blowing head, which plastic film web is to be supplied to a stationary winder comprises flattening means and pinch rolls for acting on the plastic film web being received. The flattening means and pinch rolls are preferably mounted in a frame, which is mounted for rotation through as much as 360° about the axis of the initially tubular film web. The apparatus preferably also comprises turning rods and deflecting rollers which are, pivoted on said axis and are arranged in parallel planes in such a manner that during the operation of the apparatus the film web moves from the …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 27, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.