Flexible bags – Lifting or suspending element – Unitary with bag
Patent
1997-02-06
1999-07-20
Garbe, Stephen P.
Flexible bags
Lifting or suspending element
Unitary with bag
383 41, 383 67, 493235, 493226, B65D 3314
Patent
active
059247967
ABSTRACT:
A process of manufacturing a bulk bag begins with a length of tubular woven polypropylene material which is cut along first transversely extending lines 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.
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Garbe Stephen P.
O'Neil Michael A.
Super Sack Manufacturing Corp.
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