Patent ID: 8157941
Filing Date: 2012-04-17
Classification: B29C,B29L,Y10T

Abstract:
1. Process for manufacturing plastic packaging in tubular form, said process comprising: a wrapping step during which a laminate, having edges, is wrapped, an abutting step during which the edges of the laminate are butted together, and a fastening step during which said edges of the laminate are welded together, wherein a bead of plastic in a molten state is extruded and deposited on an internal face of the laminate so as to cover at least a weld zone defined between the edges, the energy needed to produce the weld coming from the plastic bead, and wherein the bead of plastic is extruded in the molten state onto a conveyor belt, and the molten bead of plastic contacts the internal face of the laminate prior to the abutting step.