Container for hot-filling liquids

Abstract

The invention relates to a packaging means, hereinbelow also: container, which is suitable for the hot-filling of food products in liquid form. The container comprises an upper base of a metal or of a metal alloy having an opening for receiving the liquid and a lower base of a metal or an alloy having an air admission. The upper base and the lower base are sealingly connected with a wall body of a metal or an alloy at a respective upper or lower end of the wall body and form a hollow space for receiving the liquid. Between the lower base and the lower end of the wall body sealingly engaging the lower base, a film is provided which can cause a volume reduction of the hollow space.

What is claimed is: 
     
         1 . A container for receiving a liquid, wherein the container comprises:
 an upper base made of a metal or an alloy having an opening for receiving the liquid;   a lower base made of a metal or an alloy having an air admission, wherein the upper base and the lower base are sealingly connected with a wall body at the upper end and the lower end of the wall body, respectively, to form a hollow space for receiving the liquid, said wall body being made of a metal or an alloy; and,   a film that can realize a volume reduction of the hollow space is provided between the lower base and the lower end of the wall body that is sealingly in contact with the lower base.   
     
     
         2 . A container according to  claim 1 , wherein the wall body and optionally the upper base and/or the lower base are deformation-resistant in relation to the film. 
     
     
         3 . A container according to  claim 1 , wherein the film compensates compression forces such that the outer shape of the wall body of the container does not deform due to tensile forces during cooling of a hot-filled liquid. 
     
     
         4 . A container according to  claim 1 , wherein the film compensates compression forces such that the outer shape of the entire container does not deform due to tensile forces during cooling of the hot-filled liquid. 
     
     
         5 . A container according to one of the  claim 1 , wherein the wall body is realized as a hollow cylinder. 
     
     
         6 . A container according to  claim 5 , wherein the material properties of the film absorb the compression forces so entirely that the cylindrical shape of the wall body remains intact after cooling of the liquid. 
     
     
         7 . A container according to  claim 1 , wherein the film together with the lower base and the wall body are sealingly connected with one another through a seam, in particular a roll seam. 
     
     
         8 . A container according to  claim 1 , wherein the film together with the lower base and the wall body are sealingly connected with one another through a flange. 
     
     
         9 . A container according to  claim 7 , wherein a sealing adhesive is inserted into the seam. 
     
     
         10 . A container according to  claim 1 , wherein the film is connected with the lower base by means of an adhesive connection, by sealing or through a positive-locking fit connection. 
     
     
         11 . A container according to  claim 1 , wherein the upper base is sealingly connected with the wall body through a seam, in particular a roll seam, or a flange. 
     
     
         12 . A container according to  claim 1 , wherein the opening is realized as a screwing funnel having screw threads for a screw cap or a cam screw cap. 
     
     
         13 . A container according to  claim 12 , wherein only the screwing funnel or the upper base including the screwing funnel consist of aluminum or an aluminum alloy. 
     
     
         14 . A container according to  claim 12 , further comprising a screw cap or cam screw cap including an inlying seal, said screw cap or cam screw cap made of metal, optionally of aluminum or an aluminum alloy, and further wherein the screw cap or cam screw cap is coated with a BPA-free lacquer at least on the surfaces which can come into contact with the liquid after filling. 
     
     
         15 . (canceled) 
     
     
         16 . (canceled) 
     
     
         17 . A container according to  claim 1 , wherein the container further comprises a swing top. 
     
     
         18 . A container according to  claim 1 , wherein the opening is reinforced at the upper end thereof. 
     
     
         19 . (canceled) 
     
     
         20 . A container according to  claim 1 , wherein the lower base, the wall body, and at least a portion of the upper base, are made of a sheet metal, in particular tinplate, and the relation between the thickness of the film and the thickness of the sheet metal is at least 1.5:1 and preferably 2:1. 
     
     
         21 . (canceled) 
     
     
         22 . (canceled) 
     
     
         23 . (canceled) 
     
     
         24 . A container according to  claim 1 , wherein the surfaces of the upper base and of the wall body which after filling are in contact with the liquid are made of tinplate and are provided with a BPA-free coating. 
     
     
         25 . A container according to  claim 1 , wherein at least the junctions of the upper base and of the wall body which are in contact with the liquid after filling are provided with a BPA-free powder seam cover, optionally a BPA-free powder coating. 
     
     
         26 . (canceled) 
     
     
         27 . A container according to  claim 1 , wherein the wall body and optionally the upper base and/or the lower base comprise iron and are in particular a steel. 
     
     
         28 . A container according to  claim 8 , wherein a sealing adhesive is inserted into the flange.