FIELD: packing. SUBSTANCE: proposed metal body has closed metal envelope extending around longitudinal axis and suitable for use with cover on top. Cross section across envelope at top and near top has contour containing 3≤n≤6, inward bent sections with minimum radius of curvature R and n essentially straight sections of contour. Envelope contains at least n essentially flat parts of body separated from each other by sharp bent continuing essentially parallel to longitudinal axis. Bent has maximum radius of curvature r, either less than or equal to 0.4R. EFFECT: enlarged operating capabilities. 6 cl, 7 dwg
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