Abstract: An apparatus for joining a bottom foil to a cover foil comprising a heating roller and a sealing roller that cooperates with the heating roller. In the inlet region of the heating roller, there is a preheater for the cover foil. To enable especially good handling of the cover foil, an additional preheater, embodied as a heating wedge, for the cover foil is disposed in the immediate vicinity of the heating roller. Instead of the preheater, the sealing roller may also be embodied as heatable.

Abstract: The invention sets forth a fuel injection valve for internal combustion engines, which includes a valve member, axially displaceably guided in a valve body. The valve member includes a sealing face on an end toward a combustion chamber which cooperates with a valve seat face provided on the valve body in order to control an injection port. The injection port communicates on an end remote from the combustion chamber with a final control element for actuating the valve member. The injection valve has a hydraulic damping device which when stoppage of the valve member in an intermediate position between contact with the valve seat and the maximum opening stroke is controlled by the piezoelectric final control element keeps the valve member in that stroke position.