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An improved bulkbag and method of making same, of the type having four sidewalls, a floor and top portion, all portions stitched together to define the enclosure for the bulk bag housing material. The bag comprises a plurality of four wall panels, which each panel having a first and second vertical

An improved bulkbag and method of making same, of the type having four sidewalls, a floor and top portion, all portions stitched together to define the enclosure for the bulk bag housing material. The bag comprises a plurality of four wall panels, which each panel having a first and second vertical edge for sewing into the next adjacent panel along each edge. Prior to sewing the panels together, to each upper edge of each panel there is provided a first and second leg of a lifting loop, so that each loop spans from the first edge to the second edge of each panel. The panels are then sewn together along their edges, and there is defined the bulk bag, with the ends of each of the four lifting loops terminating at the stitch line between panels, which define the middle of each sidewall of the bag. There would then be provided a reinforcement ring at each point where a pair of legs of lifting loops are stitched to strengthen the attachment point. Further there would be provided at each lifting loop attachment points a dart, or stacker seam to define the bottleneck feature of the bag. The lifting loop attachment points would define a vertical seam along the surface of the dart defined by the stacker seam. Further there is provided a back tack stitching feature to prevent spread forces in the filled bag, and reinforcing strapping in the loops to provide a stiffening feature to the loops.

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1. An improved bulk bag construction, comprising: a. a plurality of vertical sidewall panels, each panel having first and second vertical edges;b. a plurality of lifting loops, each having a first and second leg portion, wherein the first and second leg portions of each lifting loop have unequal len

1. An improved bulk bag construction, comprising: a. a plurality of vertical sidewall panels, each panel having first and second vertical edges;b. a plurality of lifting loops, each having a first and second leg portion, wherein the first and second leg portions of each lifting loop have unequal lengths, wherein the first and second leg portions of each lifting loop terminate at a distance from a bottom edge of each of the vertical sidewall panels and wherein the first leg portion of each lifting loop extends from the first vertical edge of each vertical sidewall panel and the second leg portion of each lifting loop extends from the second vertical edge of each sidewall panel;c. each first vertical edge of the vertical sidewall panels stitched to an adjoining second vertical edge of the sidewall panels forming four sidewalls to define a bulk bag enclosure space wherein the first leg portion of one lifting loop and the second leg portion of an adjacent lifting loop are stitched in between the first vertical edge of one sidewall panel and the second vertical edge of an adjacent sidewall panel to form a single line of stitching;d. each of the lifting loops terminating at a center point of each of the four sidewalls, when the panels are stitched together and wherein corners of the bag do not have stitch points; ande. a dart formed in the stitch line of each adjoined sidewall panel, so that an upper portion of the bag forms a bottleneck configuration, while each of the first and second leg portions of the lifting loops are stitched into fabric defining the dart. 2. The bulk bag construction in claim 1, further comprising a reinforcement ring engaging the legs of the lifting loops directly above where the lifting loop legs are attached at each stitch line of adjoining panels to define a means to strengthen the attachment point as filled bulk bags are lifted. 3. The bulk bag construction in claim 1, wherein there is provided a bottom of the bag stitched along a bottom edge of each sidewall panel after the panels are stitched together to define the bulk bag space. 4. An improved bulk bag construction, comprising: a. a plurality of vertical sidewall panels, each panel having first and second vertical edges;b. a plurality of lifting loops, each having a first and second leg portion, wherein the first and second leg portions of each lifting loop have unequal lengths, wherein the first and second leg portions of each lifting loop terminate at a distance from a bottom edge of each of the vertical sidewall panels and wherein the first leg portion of each lifting loop extends from the first vertical edge of each vertical sidewall panel and the second leg portion of each lifting loop extends from the second vertical edge of each sidewall panel;c. each first vertical edge of the vertical sidewall panels stitched to an adjoining second vertical edge of the vertical sidewall panels at each corner of the bag forming four sidewalls to define a bulk bag enclosure space wherein the first leg portion of one lifting loop and the second leg portion of an adjacent lifting loop are stitched in between the first vertical edge of one sidewall panel and the second vertical edge of an adjacent sidewall panel to form a single line of stitching; andd. wherein the first leg portion of each lifting loop terminates at one corner of each of the four sidewalls and the second leg portion of each lifting loop terminates at a different corner of each the four sidewalls; ande. wherein a longer leg portion of each lifting loop is stitched to a shorter leg portion of another lifting loop; andf. a dart formed in the stitch line of each adjoined sidewall panel, so that an upper portion of the bag forms a bottleneck configuration, while each of the first and second leg portions of the lifting loops are stitched into fabric defining the dart. 5. The bulk bag construction in claim 4, wherein there is provided a stacker seam on each of the bag corners so as to prevent failure of the bulk bag when filled. 6. An improved bulk bag construction, comprising: a. a plurality of vertical sidewall panels, each panel having first and second vertical edges;b. a plurality of lifting loops, each having a first and second leg portion, wherein the first leg portion of each lifting loop extends from the first vertical edge of each vertical sidewall panel and the second leg portion of each lifting loop extends from the second vertical edge of each sidewall panel, wherein the first and second leg portions of each lifting loop have unequal lengths and wherein the first and second leg portions of each lifting loop terminate at a distance from a bottom edge of each of the vertical sidewall panels;c. each first vertical edge of the vertical sidewall panels stitched to an adjoining second vertical edge of the sidewall panels, forming four sidewalls to define a bulk bag enclosure space, wherein the first leg portion of one lifting loop and the second leg portion of an adjacent lifting loop are stitched in between the first vertical edge of one sidewall panel and the second vertical edge of an adjacent sidewall panel to form a single line of stitching;d. each of the lifting loops terminating at a center point of each of the four sidewalls, when the panels are stitched together, wherein a longer leg portion of each lifting loop is stitched to a shorter leg portion of another lifting loop; ande. plastic strapping folded into each of the lifting loops to provide for stiffening of the loops between attachment points; andf. a dart formed in the stitch line of each adjoined sidewall panel, so that an upper portion of the bag forms a bottleneck configuration, while each of the first and second leg portions of the lifting loops are stitched into fabric defining the dart. 7. An improved bulk bag construction, comprising: a. a plurality of vertical sidewall panels, each panel having first and second vertical edges;b. a plurality of lifting loops, each having a first and second leg portion, wherein the first leg portion of each lifting loop extends from the first vertical edge of each vertical sidewall panel and the second leg portion of each lifting loop extends from the second vertical edge of each sidewall panel, wherein the first and second leg portions of each lifting loop have unequal lengths, and wherein the first and second leg portions of each lifting loop terminate at a distance from a bottom edge of each of the vertical sidewall panels;c. each first vertical edge of the vertical sidewall panels stitched to an adjoining second vertical edge of the sidewall panels, forming four sidewalls to define a bulk bag enclosure space, wherein the first leg portion of one lifting loop and the second leg portion of an adjacent lifting loop are stitched in between the first vertical edge of one sidewall panel and the second vertical edge of an adjacent sidewall panel to form a single line of stitching;d. each of the lifting loops terminating at a center point of each of the four sidewalls, when the panels are stitched together; ande. a dart formed in the stitch line of each adjoined sidewall panel, so that the upper portion of the bag forms a bottleneck configuration, while a first leg of lifting loop and a second leg of an adjacent lifting loop are stitched into fabric defining the dart; andf. plastic strapping folded into each of the lifting loops to provide for stiffening of the loops between attachment points; andg. reinforcement rings encircling the legs of the lifting loops directly above where the lifting loop legs are attached to the sidewall panels, and wherein the reinforcement rings are not stitched to the vertical sidewall panels. 8. An improved bulk bag construction, comprising: a. a plurality of vertical sidewall panels, each panel having first and second vertical edges;b. a plurality of lifting loops, each having a first and second leg portion, wherein the first leg portion of each lifting loop extends from the first vertical edge of each vertical sidewall panel and the second leg portion of each lifting loop extends from the second vertical edge of each sidewall panel wherein the first and second leg portions of each lifting loop have unequal lengths, wherein the first and second leg portions of each lifting loop terminate at a distance from a bottom edge of each of the vertical sidewall panels and wherein a longer leg portion of one lifting loop is stitched to a shorter leg portion of another lifting loop;c. each first vertical edge of the vertical sidewall panels stitched to an adjoining second vertical edge of the sidewall panels at each corner of the bag forming four sidewalls to define a bulk bag enclosure space, wherein the first leg portion of one lifting loop and the second leg portion of an adjacent lifting loop are stitched in between the first vertical edge of one sidewall panel and the second vertical edge of an adjacent sidewall panel to form a single line of stitching;d. each of the lifting loops terminating at the corner of each of the four sidewalls, when the panels are stitched together; ande. a dart formed in the stitch line of each adjoined sidewall panel, so that the upper portion of the bag forms a bottleneck configuration, while each of the legs of the lifting loops are stitched into fabric defining the dart; andf. plastic strapping folded into each of the lifting loops to provide for stiffening of the loops between attachment points.