Patent ID: 8806843

Claim:
A method of fabricating a self-standing bag, the method comprising: fabricating a main material coil while providing materials required for forming two side walls of a main body of the bag; fabricating a top wall material coil while providing a top wall forming belt required for forming a top wall of the bag; cutting the mail material coil into two side wall forming belts; guiding the side wall forming belts into a vertical transfer state; bending a side of an upper side wall forming belt of the side wall forming belt into a folding flange; guiding the top wall forming belt onto one side of the side wall forming belt with another folding flange; fabricating a nozzle feeding mechanism onto a guiding path of the top wall forming belt; forming punch holes at intervals onto the top wall forming belt; feeding a preset nozzle of the nozzle feeding mechanism into the punch hole; locating the preset nozzle into the punch hole via a hot-pressing mechanism; guiding a bottom wall forming belt to one side between the two side wall forming belts far away from the folding flange; forming a pressing line at a desired spacing between the side wall forming belts and the top wall forming belt with the hot-pressing mechanism; and tailoring the pressing lines to form the self-standing bag.