Patent ID: 8708879
Filing Date: 2014-04-29
Classification: B31B,B65D

Abstract:
1. An apparatus for making tri-fold side-seamed plastic produce bags, comprising: a supply of thermoplastic resin; an extruder, said extruder extruding a continuous tube of thermoplastic film; a tubing flattener, said flattener flattening said tube, said tube having an upper surface, a lower surface, first and second side edges; a perforator, said perforator forming a perforation perpendicular to said first and second side edges across an entire width of said tube; a sealer, said sealer sealing said tube at a first side seam spaced from and parallel to said perforation and at a second side seam spaced from and parallel to said first side seam; a slitter, said slitter cutting said upper surface and said lower surface to form two facing bag streams, each of said bag streams having a first predetermined width; a folder, said folder folding each of said bag streams to one third of said first predetermined width; and said folder folding each of said bag streams in either of a Z-fold configuration and a C-fold configuration.