SEALED FLEXIBLE LIQUID CONTAINER END STRUCTURE AND METHOD FOR MAKING THE SAME Russian patent published in 2007 - IPC B63B35/28 

FIELD: packages, particularly sealed flexible bulk containers for transportation and storage of liquid, for instance liquid having density less than salt water density.

SUBSTANCE: sealed flexible bulk container has elongated flexible tubular structure of textile material having inner and outer zones, the first periphery, front end and rear end. The container also has tubular structure impermeability provision means and container filling and emptying means. Front or rear end comprises orifice having the second periphery with perimeter less than that of the first periphery and clipping means for above orifice closing. The clipping means have receiving part in which above end is inserted between two cooperating surfaces. To connect clipping means to rear or front end the rear end is squeezed between above cooperating surfaces by applying squeezing force. The clipping means has annular part and ring receiving surface, which creates two above cooperating surfaces. End part has curvilinear expanded member extending outwards in radial direction. Ring receiving surface thereof has curvilinear shape mating the curvilinear member.

EFFECT: increased container end air-tightness by imparting cone shapes thereto.

11 cl, 4 dwg