Patent ID: 6588184
Filing Date: 2003-07-08
Classification: B65B

Abstract:
A bag forming and filling machine comprisinga forming means for shaping a sheet of plastic film into a cylindrical shape with overlapping longitudinally disposed edges; heat sealing means for heat sealing the overlapping edges of the sheet together to form a tube; conveying means for moving the formed tube longitudinally from said forming means to allow a flow of loose fill material to fill the tube; a heat seal bar assembly downstream of said forming means relative to a flow of loose fill material for forming a transverse heat seal across the tube to retain loose fill material therein; means for spreading the tube into a flattened shape upstream of said heat seal bar assembly and for accumulation of the tube thereon during transverse heat sealing thereof; and means for severing the tube at said transverse heat seal to form a sealed bag of loose fill material on one side thereof and to form a sealed bottom for a subsequently formed bag of loose fill material.