CONTAINER FOR LIQUIDS WITH AUTOMATIC CRUMPLING WHEN EMPTY Russian patent published in 2010 - IPC B65D21/08 

FIELD: personal use articles.

SUBSTANCE: container includes bottom, cover and side walls from deformable waterproof material. There are several bracing-tightening units installed between two opposite side walls along container height. Each of units is arranged in the form of flat bases attached to walls and fixed on them parallel to each other by means of wound spring stretched in initial condition and rigid spreader made of two narrow plates. External ends of plates are hingedly-elastically fixed to according base, and internal ends are connected by means of pin, which is tightly inserted by its one end into common hole arranged on overlapping sections of these ends. At the same time pin is arranged in the form of hygroscopic moisture-sensitive element from capillary porous material with high sorption capacity, for instance from wood, porous ceramics or fine-pored ebonite, and free end of pin is fixed to stretched bent flat spring installed nearby on one of narrow plates.

EFFECT: simplified process of recycling and reduced pollution of environment as a result of automatic crumpling of volume container structure without user intervention.

3 dwg