DEVICE FOR FILLING PACKAGING VESSEL WITH COVER WITH GAS AND CLOSING SAID VESSEL

What is provided is an apparatus for the gas flushing and sealing of a packaging container with a lid which has a U-shaped edge flange surrounding the upper edge of the container. The apparatus has a central sealing stamp (10), a plurality of clamping jaws (2) displaceable and pressable against its lower region and, underneath these, a ring (15), into the interior (23) of which there open gas-flushing channels (19). After a filled packaging container (1), with a lid (2) placed loosely on its upper orifice, has been brought into coincidence with the sealing head, the latter is lowered until the edge of the lid springs over a stop (26) on the top side of the ring. After the lid has been lifted off from the container into a position in which the inside of the ring limits a space above the container laterally, a protective gas is conveyed through the channels into this space and flushes out the air through a narrow gap (14) between the lower part of the inside of the ring and the upper outer edge region of the container. After the flushing operation and the lowering of the closing head with the lid onto the top of the container, the clamping jaws press the edge flange (3) of the lid together with the upper edge of the container, and at the same time its edge flange (3) is sealed or welded to the container by the supply of heat.