Process for the continuous overlap welding of plastic sheets or panels
CA 1065239 A · Owner: Schlegel Engineering G.M.B.H. · Inventors: Hammer, Heiner I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides in a process for the continuous overlap welding of thermoplastic sheets or panels by heating and compressing the facing overlapping surfaces the improvement in which an additional material in the thermoplastic state is introduced between the surfaces being joined. The invention also provides a device for effecting said process which comprises a guide frame, apparatus for performing the process according to claim 1 comprising a guide frame a device, for heating the overlapping surfaces mounted in the guide frame an extruder having a nozzle for the additional material said, nozzle passing between the said surfaces mounted in the guide frame and a pressure device …
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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 October 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 30, 1996.
- 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.