Patent ID: 7314439

Claim:
A process for manufacturing a tetrahedral-shaped pouch ( 10 ) from a flexible strip of film material, in which process a tube ( 13 ) is formed from a film strip ( 32 ) in a continuous manner involving the creation of a longitudinal sealing seam ( 12 ), and the tetrahedral shaped pouch ( 10 ) is formed from the tube ( 13 ) by means of alternatingly forming a first transverse sealing seam ( 14 ) running transverse to the longitudinal seam ( 12 ) and second transverse sealing seam ( 16 ) running essentially perpendicular to and a distance from the first transverse seam ( 14 ), whereby the second transverse seams ( 16 ) are situated in the region of a tetrahedral corner ( 18 ) of the pouch ( 10 ), such that an essentially tube outlet part ( 20 ) for pouring that is closed at its free end ( 22 ) is formed projecting out from the pouch ( 10 ), the second transverse seams ( 16 ) are positioned such that the outlet parts ( 20 , 20 ′) projecting out from two neighboring tetrahedral shaped pouches ( 10 , 10 ′) are delimited by regions ( 16 a , 16 a ′) of neighboring transverse sealing seams ( 16 , 16 ′) that are arranged spaced apart from each other and their free ends ( 22 ) lie facing each other separated by a common part ( 16 b ) of the transverse sealing seams ( 16 , 16 ′), at least one notch ( 24 a ) as aid to tearing and running transverse to the direction of pouring (y) is provided in the transverse seam ( 16 a , 16 a ′) in the region of the closed free end ( 22 ) of the outlet part ( 20 , 20 ′).