Mobil Oil Corporation

Robert T Maddock

Gordon L Benoit

Randolph D Prader

A plastic film sack having gussetted side walls, and in the bottom of said sack, a heat-seal stripe welding together the four film layers in the gusseted regions of the sack and a heat seal stripe welding together the two film layers between said gusseted regions; and between the heat-seal stripes of the four film layers and the heat-seal stripe of the two film layers are unsealed, arcuate stress-relief regions and the method of forming the same.

Thermoplastic bag and method of forming the same

Method of forming a thermoplastic film sack having a stress relieved

A bag pack of a plurality of stacked thermoplastic bag structures each bag comprising a front and rear bag wall and an open mouth top portion. Handles are integral extensions of the bag walls. The bags are bonded together via bonding means in association with said handles. Individual bags may have stress relief curves in the handles and the bag mouth opening.

Growing community of inventors

W. Rush, NY, United States of America

Robert T Maddock