Combined packaging machine

Abstract

A combined packaging machine includes a device for paying out flat packaging material, a forming tube for deforming the flat packaging material into an endless tube, and a device for advancing the packaging material along the forming tube. A forming unit forms and welds respective longitudinal edges of consecutive pouches being produced, being capable of being moved in opposite directions longitudinally of the forming tube. A transverse welding unit operative for producing transverse seams between the successive ones of the pouches being produced is provided as well, as is a tucking-in unit that is provided on the transverse welding unit, being operative for tucking-in respective side regions of the successive pouches being produced. A control system selectively controls the operation of advancing, forming, transverse welding, and tucking-in units in coordination with one another in dependence on the type of pouch to be produced.

1 . A combined packaging machine comprising means for paying out flat packaging material; a forming tube for deforming the flat packaging material into an endless tube; means for advancing the packaging material along the forming tube; means for forming and welding respective longitudinal edges of consecutive pouches being produced, means for moving said forming means in opposite directions longitudinally of said forming tube, means for producing transverse seams between the successive ones of the pouches being produced; means provided on said producing means for tucking-in respective side regions of the successive pouches being produced; and means for selectively controlling the operation of said advancing, forming, producing and tucking-in means in coordination with one another in dependence on the type of pouch to be produced.