METHOD OF FABRICATING MEMBRANES MOUNTED ON A FRAME

摘要

The invention concerns a method of fabricating membranes mounted on a frame, the method including the following steps: (a) a membrane film is applied to a substrate in such a way that it can be detached from the substrate again, (b) the frame is built up on the membrane film and (c) the membrane film, together with the frame, is separated from the substrate. The aim of the invention is to be able to fabricate membranes which, in certain pre-selected areas, have physical properties which are different from the properties in the other areas. This is achieved by (d) applying a first membrane film to the substrate, (e) making at least one hole in the first membrane film and (f) covering the hole in the first membrane film over with a second membrane film.