Process for producing a metal can with an insert piece for packaging, for example, a foodstuff, and a can of this nature

A process for producing a metal can, comprising a cylindrical body, a base and a lid, in which the base has a cylindrical recess which projects into the inside of the can, in which process

• a) a combination of a body and a base is produced, by deep-drawing and wall stretching, from metallic and/or plastic coated metal sheet which is suitable for cans, wherein the body and the base are formed from a single structure;
• b) a tubular insert-piece, which forms the cylindrical recess and has opposed a first closed end and a second open end, is produced from corresponding metal sheet by deep-drawing or spinning, followed by wall stretching;
• c) a hole which is narrower than the open end of the insert piece is made in the base of the body-base combination;
• d) the edge of the hole is flanged until the edge of the hole acquires a bearing surface which is able to fit together with the edge of the open end of the insert piece;
• and
• e) the insert piece is inserted into the hole and the edge of the hole and the edge of the open end of the insert piece are joined together directly;
• wherein the edge of the hole is beaded before the insert piece is inserted into the hole and joined to the edge of the hole;
• wherein the closed end of the insert piece is inserted into the hole before any other portion of the insert piece is inserted into the hole.