METHOD AND DEVICE FOR FABRICATION OF CAN WITH FOLDED END, SUCH CAN AND CAN HOUSING Russian patent published in 2016 - IPC B21D51/26 B21D22/02 B21D39/20 B44D3/12 

FIELD: packaging industry.

SUBSTANCE: method includes the fabrication of the cylindrical housing, placement of piston device in the first hole of the cylindrical housing, arranging at the free end of the first hole with the preliminary curling and twisting of the free end of the first hole radially outwards and on the axis along the cylindrical housing with formation of the extended curl. The diameter of the first hole is defined by the piston device contained in the hole. In the extended curl the step is formed, and the cylindrical housing is partially extended in radial direction up to the first free end for formation of extended and step curl in the narrowed section of the extended cylindrical housing, while the extended and step curl lies in the external imagined enveloping lateral surface of radially stretched part of the cylindrical housing.

EFFECT: method allows to avoid the use of separate clamping ring.

13 cl, 10 dwg