TIGHTLY SEALED RESERVOIR (VERSIONS) Russian patent published in 2010 - IPC B65D41/18 

FIELD: packing industry.

SUBSTANCE: tightly sealed reservoir comprises body, having neck part and cover from plastic material, which creates tension in it, when neck part is closed, and creates tightened section in condition of applied pressure against reservoir body by means of effort that aims to clear specified tension, at the same time, tightening section creates sealing area and is thermally welded. Annular collar parallel to edge of neck part is provided at external wall of neck part. Annular flange is arranged at cover edge, which creates a tightening section with collar. Besides annular protruding or concave section is provided at external wall of neck part closer to edge of neck part than collar, and annular concave or protruding section is arranged on external wall of cover in the area, where distance with flange at the edge of cover is slightly longer that distance between annular protruding or concave section and collar at neck part, besides section of flange and collar sealing is thermally welded. Versions of tightly sealed reservoir making are provided.

EFFECT: provision of high ability for foreign substances adaptation due to development of neck part and cover design in tightly sealed reservoir, improved tightness and strength of reservoir body coupling with cover.

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