Patent ID: 6371646
Filing Date: 2002-04-16
Classification: B29C,B29K,B29L,B31B,B65D,Y10S

Abstract:
A method of forming a bulk bag comprising the steps of:a) providing at least two tubular blanks of material each having a pair of opposed side edges and a pair of opposed ends; b) arranging the tubular blanks to form a pair of gusseted panels disposed between a pair of generally flat panels with each gusseted panel and each flat panel having at least two layers of material; c) connecting together the free edges of the tubular blanks to define four interconnected side walls of the bag with each side wall formed from at least two layers of material; and d) connecting together the flat blanks with adjacent portions of the gusseted blanks along inclined lines of connection from the side edges of the flat panels extending inwardly towards the center of the blank to form a pair of end walls interconnected to the side walls with one end wall at each of a pair of opposed ends of the side walls and each end wall formed from at least two layers of material.