Patent ID: 11897660
Assignee: POLYTEX FIBERS CORPORATION
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 15:
16. A bag comprising: a front wall, a back wall, a first side wall, and a second side wall, each having an interior surface, an exterior surface, a top edge, and a bottom edge, wherein the top edges of each of the first side wall, the second side wall, and the back wall extend further than the top edge of the front wall, and wherein the front wall, back wall, first side wall, and second side wall each comprise a laminate consisting essentially of a first layer, a second layer, and a third layer, wherein the first layer comprises woven strips consisting essentially of oriented polypropylene, the second layer comprises a film comprising oriented polypropylene, the third layer comprises a film comprising oriented polypropylene, and the first layer is laminated to the second layer by the third layer, and wherein the top edge of the, first side wall, the top edge of the second side wall, and the top edge of the back wall are adapted to be folded over the top edge of the front wall and an interior surface portion of each of the first side wall, the second side wall, and the back wall and heat sealed to an exterior surface portion of the front wall to form a top end of the bag, and the bottom edge of the front wall, the bottom edge of the first side wall, the bottom edge of the second side wall, and the bottom edge of the back wall are adapted to be heat sealed together to form a bottom end of the bag, wherein the bag comprises a plurality of perforations which define at least one line extending at least ten percent of a distance across the front wall or back wall of the bag, wherein each of the plurality of perforations penetrates at least partially through at least the first layer, and the plurality of perforations are located proximal the top end or the bottom end of the bag but not on the top end or bottom end, respectively, of the bag, wherein the bag comprises a cover covering the plurality of perforations, wherein the cover covers only a portion of the plurality of perforations, and wherein said bag is adapted to hold at least ten pounds by weight of at least one filling material.