One piece flexible intermediate bulk container and process for manufacturing same
AssigneeSuper Sack Mfg. Corp.
InventorsNorwin C. Derby, Craig A. Nickell, Bobby Glenn Brown
Life of this patent
Estimating the term…
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AssigneeSuper Sack Mfg. Corp.
InventorsNorwin C. Derby, Craig A. Nickell, Bobby Glenn Brown
Estimating the term…
A process of manufacturing a bulk bag begins with a tubular blank of woven polypropylene material which is cut along a first transversely extending line 64 to form the upper edges of lift sleeve portions 76, cut along longitudinally extending lines 66 to form the side edges of the lift sleeve portions 76, and cut along substantially transversely extending lines 68 situated at the midpoint of the lines 66 to form opposed top wall halves 72 and opposed bottom wall halves 74. The top wall halves and the bottom wall halves are then sewn together along sew lines 82 and 84, respectively. Sidewalls 70' are joined to the bottom wall halves 74 along sew lines 86, and the top wall halves 72 are joined to the sidewalls 70' along sew lines 88. The lift sleeve portions 76 may be configured to provide lift sleeve, lift rope, or single point lift construction. The top and bottom walls may be provided with a fill chute and discharge chute, respectively.
A flexible intermediate bulk container comprising:
A method of manufacturing a flexible intermediate bulk container comprising:
Dependencies are inferred from the claim text.