METHOD FOR MACHINING PREFORMED PLASTIC FILM BY SEPARATION AND/OR ABLATION

摘要

The invention relates to a method for producing plastic film having a predefinable outline and/or even or woven thickness, by machining preformed plastic film by separation and/or ablation. Said method is used especially for manufacturing flexible flaps for artificial heart valves. To produce a film having local variations in thickness and smooth edges where the piece of film has been cut the invention provides. for the plastic film to be separated and/or for specific areas to be ablated to the desired thickness by means of a laser beam.