Pressure container and process for producing and filling a pressure container

Abstract

The present invention relates to a pressure container and to a process for producing and filling a pressure container. In this context, the pressure container has an outer container ( 20 ) and an inner container ( 10 ) located in the outer container ( 20 ). The inner container ( 10 ) includes a wall ( 13 ) consisting of a laminated film. There is a content chamber ( 11 ) for contents ( 12 ) in the inner container ( 10 ) and there is a propellant chamber ( 21 ) for a propellant ( 22 ) in the outer container ( 20 ). Both containers are separated from each other such that they are fluid-tight and/or gas-tight. A cover part ( 25 ) seals the containers ( 10, 20 ). There is a valve part ( 30 ) on the cover part ( 25 ) for dispensing contents ( 12 ) from the content chamber ( 11 ) to the outside. There is a closable filling opening ( 27 ) in a bottom part ( 26 ) of the outer container ( 20 ) that faces away from the valve part ( 30 ). To improve such a pressure container, the inner container ( 10 ) has a bottom weld ( 14 ) at which location the inner container ( 10 ) is welded and/or glued, and the inner container ( 10 ) is folded in a lower section ( 15 ) facing its bottom weld ( 14 ) to form a crescent-shaped cross sectional contour ( 16 ), before the inner container is inserted into the outer container ( 20 ) and before the propellant ( 22 ) is introduced into the outer container ( 20 ).

What is claimed is:  
     
         1 . A pressure container having an outer container ( 20 ); an inner container ( 10 ) with a wall ( 13 ) consisting of a laminated film located in the outer container ( 20 ) and a cover part ( 25 ) for sealing the containers ( 10 ,  20 ); 
 wherein the inner container ( 10 ) includes a content chamber ( 11 ) for contents ( 12 ) and the outer container ( 20 ) includes a propellant chamber ( 21 ) for a propellant ( 22 ), the inner container ( 10 ) and the outer container ( 20 ) being separated from each other so as to be at least one of fluid-tight and gas-tight;    wherein the cover part ( 25 ) has a valve part ( 30 ) arranged thereon for dispensing contents ( 12 ) from the content chamber ( 11 ) to the outside, and a closable filling opening ( 27 ) in a bottom part ( 26 ) of the outer container ( 20 ) faces away from the valve part ( 30 );    wherein the inner container ( 10 ) has a bottom weld ( 14 ) at which the inner container ( 10 ) is at least one of welded and glued, and the inner container ( 10 ), before being inserted into the outer container ( 20 ) and before the propellant ( 22 ) is introduced into the outer container ( 20 ), receives a crescent-shaped cross sectional contour ( 16 ) at least in a lower section ( 15 ) facing the bottom weld ( 14 ).    
     
     
         2 . The pressure container of  claim 1 , wherein the bottom weld ( 14 ) is arranged at a lower end of the inner container ( 10 ).  
     
     
         3 . A process for producing and filling a pressure container having an outer container ( 20 ) including a propellant chamber ( 21 ) for a propellant ( 22 ); an inner container ( 10 ) including a wall ( 13 ) consisting of a laminated film located and a content chamber ( 11 ) for contents ( 12 ), both containers being separated from each other to be at least one of fluid-tight and gas-tight; and a cover part ( 25 ) for sealing the containers ( 10 ,  20 ) having a valve part ( 30 ) arranged thereon for dispensing contents ( 12 ) from the content chamber ( 11 ) to the outside, a bottom part ( 26 ) of the outer container ( 20 ) having a closable filling opening ( 27 ) facing away from the valve part ( 30 ); comprising the steps of: 
 providing the inner container ( 10 ) with a bottom weld ( 14 ) at which location the inner container ( 10 ) is one of welded and glued; folding the inner container ( 10 ) in a lower section ( 15 ) facing the bottom weld ( 14 ) to form a crescent-shaped cross sectional contour ( 16 );    inserting the inner container ( 10 ) into the outer container ( 20 );    introducing propellant ( 22 ) into the outer container ( 20 ).    
     
     
         4 . The process of  claim 2 , wherein the step of inserting the inner container ( 10 ) into the outer container ( 20 ) comprises the step of inserting the inner container ( 10 ) into the outer container ( 20 ) until the bottom weld ( 14 ) lies directly over the bottom part ( 26 ) such that the lower section ( 15 ) facing the bottom weld ( 14 ) lies outside of an axial projection ( 28 ) of the filling opening ( 27 ).