Patent ID: 7011615

Claim:
A method of making a storage bag, the method comprising the steps of: extruding a single web of thermoplastic film, the web being planar in shape and formed of a single layer; adding closure elements to the web subsequent to the forming of the web; cutting the web at a predetermined location on the web to create a first sheet and a second sheet each of the first and second sheet being planar in shape and formed of a single layer; folding the first sheet to form first and second parallel layers meeting at a bottom edge of a first compartment; folding the second sheet to form first and second parallel layers meeting at a bottom edge of a second compartment; closing a closure element of the first compartment, the first compartment having an inner side wall and an outer side wall; closing a closure element of the second compartment, the second compartment having an inner side wall and an outer side wall; joining the first compartment to the second compartment, wherein the first compartment has a mouth at a top edge and the second compartment has a mouth at a top edge, the first and second compartments being joined at a point between the inner side wall of the first compartment and the inner side wall of the second compartment, the inner side walls joined together to create a central lip, the central lip extending above the top edges of the first and second compartments; and simultaneously joining the first and second side edges of the first and second compartments and severing the web into individual bags.