TETRA PAK

PACKAGE FORMING, FILLING, AND SEALING MACHINES FOR SIMULTANEOUSLY MAKING, FILLING, AND SEALING NON-VITREOUS PACKAGES MADE OF FLEXIBLE SHEET MATERIAL WHICH HAVE THE SHAPE OF A SUBSTANTIALLY REGULAR [ TETRAHEDRON,] * PARALLELEPIPEDON, * EACH OF THE [ FOUR ] * SIX * SIDES OF WHICH IS A SUBTANTIALLY REGULAR [ TRIANGLE ] * RECTANGLE *