FIELD: process engineering.
SUBSTANCE: vessel is made of the sheet of flexible material cut, coiled and secured to form truncated cone base area. Sheet as-coiled comprises top area with two opposite valves. Note here that every valve is separated from the remaining part of said sheet by line along which said sheet is flexed so that valves as-folded along their contour lines form single protruding discharge part with spout composed between the base are extending part and at least one of said valves.
EFFECT: perfected design.
18 cl, 13 dwg
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