Method and tubular bag machine for the continuous production of block-bottom bags

Abstract

The invention relates to a tubular bag machine and a method for the continuous production of block-bottom bags (10) comprising two side areas folded in at the bottom and a transversally sealed bottom seam, the bottom seam comprising at least one first portion with a twin film web and at least one second portion with a quadruple film web, and the bottom seam running in the base surface des block-bottom bag (10). Once a bottom seam has been transversally sealed, the front block-bottom bag (10) is severed from the film web (03) by applying a film cut, and the transverse sealing jaws (09) moving in the conveying direction are opened far enough for the transverse sealing jaws (09) to exert essentially no more pressure on the bottom seal, and the transverse sealing jaws (09) moving in the conveying direction simultaneously move perpendicular to the conveying direction, the bottom seam thus being folded over perpendicular to the conveying direction, and the folded-over bottom seam is fixed in such a manner that it runs in the base surface of the block-bottom bag (10)

Dependencies are inferred from the claim text.