Method for hot-forming a laminated sheet of synthetic resin, as well as a device for working this method
CA 1291616 C · Owner: Isovolta Osterreichische Isolierstoffwerke Aktiengesellschaft · Inventors: Petershofer, Georg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and a method for hot-forming a laminated sheet of synthetic resin. The sheet, in at least its region that is to be deformed, is heated to the forming temperature which is equal to or higher than the melting temperature of a thermoplastic bonding agent which is disposed between the laminate layers containing a duromer plastic material and planar carrier materials. The sheet is bent around a cylindrical surface with the aid of a movably guided bending plate and is cooled. During a large part of the bending operation the bending plate, will be in planar contact with the border region of the sheet. The individual laminate layers will be mutually displaced in the bending region and …
Read the whole patent
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 November 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2008.
- 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.