Easy opening pinch bottom bag

An improved easy opening gusset bag comprising:

• opposed generally rectangular front and rear panels, each having top edges;
• first and second front gusset panels articulated to opposed sides of said front panel along parallel fold lines;
• first and second rear gusset panels articulated to opposed sides of said rear panel along parallel fold lines, said first front gusset panel and said first rear gusset panel being articulated to one another, said second front gusset panel and said second rear gusset panel being articulated to one another, said first and second rear gusset panels each including an edge extending from their respective articulations to the first and second front gusset panels, said edges of said first and second rear gusset panels being disposed generally opposite the respective articulations of said first and second rear gusset panels to the rear panel;
• said bag including opposed closed top and bottom ends, said rear panel and said first and second rear gusset panels being folded over said front panel along a top fold line to define the closed top end of said bag;
• and
• a tear strip disposed on the front panel spaced from and parallel to the top edge of said front panel and substantially adjacent the closed top end of the bag, said tear strip being intermediate the front panel and the folded over portions of said first and second rear gusset panels, said rear panel and said rear gusset panels being characterized by perforation lines disposed substantially adjacent said tear strip, the perforation lines of said first rear gusset panel and said rear panel overlying each other and extending from the articulation between said first rear gusset panel and said rear panel to a point spaced from said edge of said first rear gusset panel, such that the remainder of said rear panel and the first rear gusset panel are free of perforations, the perforation line of said second rear gusset panel extending from the edge thereof to a location intermediate said edge and the articulation between said second rear gusset panel and said rear panel such that the remainder of said second rear gusset panel is free of perforations, whereby said perforations facilitate the initial severence of said first rear gusset panel and said rear panel by the tear strip and then facilitate the initial severence of said second rear gusset panel by said tear strip to enable an easy and complete opening of the top end of said gusset bag.