Method for making bags and an apparatus for carrying out this method
CA 2085530 A1 · Owner: Windmoller & Holscher · Inventors: Mundus, Friedhelm; Achelpohl, Fritz; VOß, HANS-LUDWIG
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for making bags preferably provided with side folds, or other flat workpieces, which have a slip extending beyond the open edge. In accordance with the invention partly finished, bags are laterally supplied to a conveyor belt driven in a regulated manner, and are held there by grippers. By means of a glue applicator a glue strip is applied to the bag near its bottom edge during the regulated feeding movement of the conveyor belt. Finally, in a slip application station a slip is supplied laterally to the conveyor belt and is placed onto the glue surface. The invention furthermore provides an apparatus for carrying out the aforementioned method.
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
- Filed December 16, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 2014.
- 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.