Patent ID: 6942100
Filing Date: 2005-09-13
Classification: B31B,B65D

Abstract:
1. A square bottomed plastic bag stack, comprising: a plurality of stacked polyethylene film bags, each of said bags comprising front and rear polyethylene film walls, each of said front and rear walls having first and second side edges, a top edge and a bottom edge; each of said bags having a pair of longitudinally oriented side gussets attached to said first and second side edges; each of said bags having a flat, rectangular bottom formed of lower portions of said front and rear walls and lower portions of said side gussets; lower corners of said each side gusset being folded outwardly and together to form downward pointing triangular panels; said triangular panels being folded inwardly from said side gussets; lower portions of said front and rear walls being folded inwardly and sealed together to form the bag bottom; said bag bottom being sealed to said side gussets adjacent upper edges of said triangular panels; said triangular panels being sealed to an upper surface of said bag bottom; each of said bags being folded inwardly at said side gussets and upwardly from either of said front wall and said rear wall at a point spaced upwardly from said bottom edge, to form a flattened bag; said bags being stacked upon one another and held in registration by attachment of said bags to one another, thereby forming a registered bag stack; and whereby, when said bags are pulled from said bag stack and opened, they will stand erect upon said flat bottom.