CONTAINER Russian patent published in 2006 - IPC B65D30/10 

FIELD: packing means, particularly sacks, bags or like containers for liquid.

SUBSTANCE: container comprises chamber defined by flexible walls and flexible through means, which creates connection between the chamber and ambient space. Chamber volume depends on relative wall position. Through means may be brought in opened spate and closed state. Chamber comprises lower area in which liquid is accumulated so that container takes vertical position. Above walls may assume relative position under the action of liquid accumulated in lower chamber part. The relative position provides increase of chamber volume, which resists internal chamber pressure. Through means may be brought in closed state in response to negative pressure created in chamber and extends from the chamber at an angle to longitudinal container axis.

EFFECT: increased reliability of container resealing after initial container opening.

12 cl, 12 dwg