Patent ID: 9371143
Filing Date: 2016-06-21
CPC Classification: B31B,B65B,B65D

Claim Text:
1. A method of forming a bag comprising, (A) moving a web downwardly over a forming tube of a vertical form, fill, and seal (VFFS) machine, the web comprising a continuous strip of open mesh material having first and second edges and a continuous strip of film material having first and second edges, the film material having a first edge bonded to the first edge of the open mesh material; (B) bonding the second edge of the film material to the second edge of the open mesh material, thereby forming a tubular sleeve; (C) shaping the sleeve into a generally rectangular form having first and second side walls formed of the open mesh material, a front wall, and a rear wall, one of which is formed at least in substantial part from the film material, the first and second side walls being gusseted as a result of the shaping step such that each of the first and second side walls has first and second longitudinally spaced gussets on opposite sides of a lateral bisector of a horizontal area containing a bottom surface of the bag, wherein the shaping step comprises (D) moving the sleeve beneath a bottom end of the forming tube; and (E) bonding the front and rear walls together at a bottom of the sleeve with the first and second side walls captured therebetween, thereby forming a bag having a closed bottom end, wherein the bag has a depth to width ratio of at least 1.5:1 at the bottom of the bag.