GB1295848A - - Google Patents

Abstract

1295848 Forming parallelepipedic packages SELFPACK VERPACKUNGS-UND VERTRIEBSGESELLSCHAFT mbH 10 Dec 1969 [10 Dec 1968] 60411/69 Heading B8C A liquid filled tube of rectangular cross-section with a longitudinal seam 17 on one narrower side so formed into parallelepiped packages in. two stages, in the first of which the lower end of the tube is isolated from the remainder by a transverse seam 10; the broader tube-sides are formed into inclined walls 11-14 the narrower tube-sides are formed into tapering outward bulges 15, 16, and the bottom of the tube is folded flat to produce side flaps 8, the partially formed package then being severed from the tube, and the side walls then flattened whilst the top of the package is folded flat, to produce a parallelepiped package. The initial forming is effected at a first station 1, the seam 10 being formed by jaws 20. The station 1 includes members 18, 19 having inclined surfaces for forming the walls 13, 14, pivotable members (23, Figs. 4, 5) having tapering U-shaped grooves (25) for forming the bulges 15, 16, and folding plates 24 for forming the flat package bottom. The package is then lowered on to an L-shaped carrier 33 and severed by cutters 34, the carrier 33 transporting the package to a second station 4 at which a plate 47 flattens the package top. This flattening causes the liquid in the package to press the walls 11, 13 outwardly, the wall 14 abutting one leg of the carrier 33 and the wall 13 abutting an already formed package held between plates 40, 41 adjacent the station 4.