The present invention relates to a process and a device for the production of a flat administration form comprising a preparation that contains pharmaceutical active substances. The flowable preparation is conveyed to an applicator unit (12) by means of a metering pump, and flows through a distribution chamber (2) having a distribution plate (3) provided with passages (4). This application device (12) transfers the preparation onto a layer of the flat administration form (6,11) which is therefor contacted with the distribution plate (3) for a short time.

A flat sealing gasket includes a mat of non-woven material having opposite faces; a polymerized impregnating agent distributed with the material and an overlay on at least one of the mat faces. The overlay which comprises a hardened, pressure-resistant polymer material is sunken into the mat to a substantial extent of the mat thickness.

An improved gasket having multiple regions of different densities and thicknesses and a method of manufacturing same. First and second laminae of compressible gasket facings can be utilized to form a finished gasket or gasket blank having two different density regions. The first lamina has a shape which corresponds to the overall shape of the gasket. The second lamina has a shape which corresponds only to those regions of the gasket for which a higher density is desired. The first and second laminae are aligned with one another in overlapping planar relationship and pressed together by a die having opposed flat surfaces. When so pressed, the second lamina is pressed into and combined with the first lamina so as to form a unitary gasket having flat facing surfaces and two different density regions. The higher density region is defined by that portion of the first lamina material which was overlapped by the second lamina during the pressing operation, while the lower density region is defined by the non-overlapped portion of the first lamina. Multiple laminae of the gasket facings having different shapes may be utilized in this manner to form gaskets or gasket blanks having additional regions of different densities.

A gasket of the invention is formed of a gasket member extending substantially throughout an entire area to be sealed. The gasket member includes a base metal plate and at least one sealing member disposed on at least one of surfaces of the base metal plate. A sealing section and a pressure affecting portion are formed in the sealing member. The sealing section has a compressibility, while the pressure affecting portion has a height and compressibility less than those of the sealing section. When the gasket is tightened, the sealing section is compressed to securely seal around a hole to be sealed. The pressure affecting portion having less compressibility is formed near bolt holes, so that the gasket can be tightened easily without gradually decreasing its tightening pressure.

A gasket having two opposed faces and an edge disposed therebetween is given a wide coating on the edge. The coating is sufficiently wide so that it goes from corner to corner on the edge and protrudes past the corner on at least one side of the gasket in a direction perpendicular to a facial plane of the gasket. The coating protrudes in an amount effective to give the gasket a sealing ability which is better than the sealing ability of the same gasket if it had a coating merely extending from corner to corner without protruding. A process for coating the gasket edges which are around the aperture comprises placing the gasket sheets together so that a cavity is formed by the apertures, the sides of the cavity are the aperture edges to be coated. The coating material is put into the cavity and contacts the edges to be coated to form the coated edges.