Liquid container and a method of making same

A method of making a liquid container, comprising the steps of:

• providing a blank of a foldable and liquid tight sheet material, comprising top, bottom, front, rear and side walls, a longitudinally extending connecting flap for preclosing said blank to form a tubular portion, an inclined wall disposed between said top and front walls which is connected to said side walls via first triangular folding segments, each of said first triangular folding segments having a tip which substantially merges with a first folding line between said front wall and said inclined wall, characterized in that said top wall is connected to said side walls via further folding segments of which internal folding segments extend from said top wall and include second folding lines aligned with third folding lines of said first triangular folding segments when the blank is flat, and are connected to said first triangular folding segments via fourth folding lines extending substantially parallel to a folding line between said inclined wall and said top wall in said finished container, that second triangular folding segments are disposed between said internal folding segments and said side walls and have tips which also merge substantially with the connecting line between the inclined wall and the top wall of a finished container, that said first triangular folding segments, said further folding segments, and said second triangular folding segments are folded inwardly, and that said top wall includes a top flap for connection to said back wall;
• sealing said connecting flap to an opposite end of said blank to form a tubular portion;
• inserting a mandrel through said inclined wall;
• while said mandrel is inserted performing the steps of:
• sealing said top wall to said side wall and said rear wall to form a partially formed container having a sealed top surface on said tubular portion;
• and
• inserting a spout onto said mandrel into sealing engagement with said inclined wall;
• thereafter filling said partially formed container with a liquid through an open bottom portion thereof;
• and
• closing said open bottom portion of said filled partially formed container.