Abstract: A process of manufacturing sacks from synthetic thermoplastic material. A tubular structure is formed from webs of plastic film in that the side portions are infolded and their overlapping margins are adhesively joined by an adhesive seam, tubular sections are severed from the tubular structure and the tubular sections are provided with bottom seam welds and are then filled and provided with top seam welds. The two plastic film webs are moved in unison, and cut sections of oriented plastic material are provided, which cut sections are shorter than the distance between the subsequently formed bottom and top seam welds as measured along the flattened sacks. The cut sections are introduced between the plastic film webs with such a spacing relative to each other that the spaces between the bottom and top seam welds are to be formed. The plastic film webs and the fabric sections are brought together and are laterally offset from each other.

Abstract: Large capacity sacks are successively suspended from holding devices by their mouths and filled with pourable material through a conduit equipped with a dispensing mechanism. During filling, the sack comes to rest on a support which is part of weighing apparatus for controlling the dispensing mechanism. Before the sack contents have reached a predetermined final weight, the holding devices are lowered to relax the sack wall above the level of the contents, whereupon filling is completed at a trickle rate.