FLEXIBLE CONTAINER Russian patent published in 2006 - IPC B65D88/16 B65D30/06 

FIELD: packing means, particularly bulk containers.

SUBSTANCE: container comprises inner shell, outer shell with lifting loop and bottom. The container is provided with two tightening units. One tightening unit is located on container bottom, another one is arranged on unloading sleeve. Tightening unit located on container bottom is made as two flexible trapezoid leafs having loops for receiving rope with fixer. The unloading sleeve is provided with similar leafs having loops, rope and fixer, which are located from outer side of unloading sleeve. At least one tightening unit is provided with sealing member having round profile and formed of resilient material. The sealing member is located inside the sleeve and fastened to opposite shell sides by ends thereof so that the sealing member extends at an angle to vertical sleeve axis. Point of longitudinal sealing member axis intersection with vertical sleeve axis is in horizontal sleeve section plane, which passes through tightening unit rope. The sealing member may be arranged in upper and lower tightening units simultaneously. The sealing member may be formed of single blank or composed of two parts.

EFFECT: increased operational reliability.

9 dwg