Method and device for forming packages

Abstract

The invention relates to a device for forming packages. The device comprises at least two transverse seam jaws, which are movable relative to each other, for forming a transverse seam constituting a bottom in a first package to be formed and, simultaneously therewith, forming a transverse seam constituting an upper side of a second package to be formed in said second package. The transverse seam jaws additionally form two connecting seams extending transversely to the transverse seams, to which connecting seams the two longitudinally extending transverse seams are connected, preferably near the ends thereof. The connected packages define a collecting space between said connecting seams and said transverse seams.

1 . A device for forming packages, which device comprises at least two transverse seam jaws, which are movable relative to each other, for forming a transverse seam constituting a bottom in a first package to be formed and, simultaneously therewith, forming a transverse seam constituting an upper side of a second package to be formed in said second package, characterised in that the transverse seam jaws additionally form two connecting seams extending transversely to the transverse seams, to which connecting seams the two longitudinally extending transverse seams are connected, preferably near the ends thereof, with the connected packages defining a collecting space between said connecting seams and said transverse seams. 
     
     
         2 . A device according to  claim 1 , characterised in that the transverse seam jaws are made up of a sonotrode and an anvil, which sonotrode and/or which anvil are profiled so that any product residues confined in the collecting space can be guided towards the centre of the collecting space by means of he generated vibration. 
     
     
         3 . A device according to  claim 1 , characterised in that the transverse seam jaws are designed for thermally welding the connecting seams and the transverse seams. 
     
     
         4 . A device according to  claim 1 , characterised in that the device comprises a die, by means of which the first package can be separated from the second package after the collecting space has been formed. 
     
     
         5 . A device according to  claim 4 , characterised in that the die has the shape of a roman numeral I, comprising two end sections extending parallel to each other, between which a longitudinally extending middle section is located. 
     
     
         6 . A device according to  claim 4 , characterised in that the dimensions of the die are larger than the dimensions of the collecting space. 
     
     
         7 . A device according to  claim 5 , characterised in that the parallel end sections of the die are connected to the longitudinally extending middle section of the die via a rounded transition. 
     
     
         8 . A method for forming packages, which method comprises the following steps:
 forming a transverse seam constituting a bottom in a first package and, simultaneously therewith, forming a transverse seam constituting an upper side of a second package to be formed in said second package, characterised in that   two connecting seams extending substantially transversely to the transverse seams are formed, preferably near ends of said transverse seams, simultaneously with the forming of the transverse seams, with the connected packages defining a collecting space between said connecting seams and said transverse seams.   
     
     
         9 . A method according to  claim 8 , characterised in that the packages are separated from each other by removing the collecting space after said collecting space has been formed. 
     
     
         10 . A package, such as a bag, for example, formed by using a method as defined in  claim 8 .