Bulk containers

Details Bulk containers Bulk containers

1993-06-23

1994-07-12

Garbe, Stephen P.

Flexible bags

Lifting or suspending element

Including reinforcement or stress distribution means...

383 24, 383105, 383107, B65D 3010, B65D 3310

Patent

active

053282671

ABSTRACT:
A bulk container of flexible fabric having a substantially rectangular base and four walls with four corners at the junctions of the walls has four interior bridging panels extending between adjacent walls across the corners, the bridging panels each being formed of fabric which is integral with part of said adjacent walls. In one embodiment, the four bridging panels and the four wall center panels are formed of a single main piece of fabric, and the corners are formed by corner pieces attached to the main piece of fabric at the junctions between the bridging panels and the wall center panels. The corner pieces each comprise a folded strip of fabric which forms a lifting device. Holes are cut through the bridging panels by laying the main piece of fabric in doubled condition and cutting two layers in one operation. The container has a pyramid shaped top cover with a central filing chute, and an outlet chute.
In other embodiments, each bridging panel forms part of an integral corner unit and the shell of the bag is formed by joining four corner units and four wall center panels. Other forms of lifting device are also described.

REFERENCES:
patent: 3949901 (1976-04-01), Tokita
patent: 4136723 (1979-01-01), Skaadel et al.
patent: 4207937 (1980-06-01), Sandeman et al.
patent: 4301848 (1981-11-01), Beaven et al.
patent: 4703517 (1987-10-01), Marino
patent: 4807299 (1989-02-01), Nattrass et al.
patent: 4822179 (1989-04-01), Nattrass
patent: 5071025 (1991-12-01), Boots
patent: 5076710 (1991-12-01), Derby
patent: 5104236 (1992-04-01), LaFleur
patent: 5158367 (1992-10-01), Derby
"Norsk Hydro Fertilizers-Fertilizer Handling", published by Norsk Hydro Fertilizers Ltd., Ipswich, England (not dated).
"Harpak Big Bags/Pratiksac", published by Harpak Import-Export-Plastic, Hillegom, Netherlands (not dated).
"Lolift-the proven flexible semi-bulk container", published by Lolift (U.K.) Ltd., Knaresborough, England (not dated).

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