Patent ID: 8646973

Claim:
A fabric bulk bag, comprising: a. a top portion; b. a bottom portion; c. vertical single-layered fabric sidewalls connecting the top portion and the bottom portion for allowing the bulk bag filled with material to form a circular shape which attains the maximum possible square area and volume for the perimeter of a fabric bulk bag having unrestrained sidewalls; d. the bottom portion further comprising eight sides which define an octagonal shaped bottom, for defining a bulk bag with a surface area at least 10% greater than a square bottom bag but with the same total perimeter as a square bottom bag, so that bulk material in a filled octagonal bottom bag is better supported than the square bottom bag by the greater number of square inches of contact with a surface the filled larger footprint of the octagonal bottom bag is resting on, to provide stability to the filled octagonal bag and to maintain the filled bag upright; and e. each of the fabric sidewalls bulging outward along a vertical midpoint of each fabric sidewall at least 1.3% greater than the octagonal shaped bottom, so that when the bulk bag is filled with bulk material, the diameter of the filled bag across the vertical midpoint of the fabric sidewalls is at least 2.6% greater than across the diameter of the octagonal shaped bottom.