FIELD: packing industry.
SUBSTANCE: folding edge is formed on the external part in an inner reservoir that faces the bottom in the end zone. Then the inner reservoir and the external part are pushed one into the other. In the side surface of the reservoir in a transition area, starting from the bottom, a wall section is formed as displaced inside relative to the side surface of the reservoir to form a circular receiving space, where the folding edge is placed. The external part is made with a structural height, which at least corresponds to the distance between the flange and the lower side of the bottom. When looking at the longitudinal section of the inner reservoir, the walls form a ledge changing into the side surface of the reservoir closely to the wall section displaced inside. A pulled-in section to form an edge for stacking is formed closely to the ledge changing into the side surface of the reservoir on the side opposite to the wall section displaced inside and having taper opposite to the side surface of the reservoir.
EFFECT: invention makes it possible to establish height of reservoirs stacking, to give strength to side surface of the inner reservoir, and to redistribute pressure of product from the bottom to the external part.
25 cl, 16 dwg
