Patent ID: 7169102

Claim:
A process for manufacturing tetrahedral-shaped pouches ( 10 ) from a flexible strip of film material, comprising forming a tube ( 13 ) from a film strip ( 32 ) in a continuous manner involving the creation of a longitudinal sealing seam ( 12 ), forming the tetrahedral shaped pouches ( 10 ) 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 ), the second transverse seam ( 16 ) is 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 free ends ( 22 ) of the pouches ( 10 , 10 ′) lie facing each other separated by a common part ( 16 b ) of the transverse sealing seams ( 16 , 16 ′), whereby the second transverse seams ( 16 ) are situated in the region of a tetrahedral corner ( 18 ) of each of the pouches ( 10 , 10 ′), such that an essentially tube outlet part ( 20 ) for pouring that is closed at free end ( 22 ) is formed projecting out from each of the pouches ( 10 , 10 ′), and separating pouches ( 10 , 10 ′) from said tube ( 13 ) along first transverse sealing seam ( 14 ) and pouches ( 10 , 10 ′) from each other along transverse seams ( 16 , 16 ′, 16 a , 16 a ′, 16 b ).