To provide a best suited method for manufacturing containers.
When producing containers 1 including a laminate blank, firstly the blanks are formed. Next, the blanks are punched out of a laminate of a sheet shape fed to a machine, and containers 1 are assembled. Manufacturing of the laminate and the assembling of the container 1 are performed normally at individually different mills in the prior art. In this invention, formation of the laminate and the separation of the blank are performed immediately before the assembling of the containers. Thus, it is possible to manufacture the containers and the laminate required therefor in the same mill. Consequently, the laminate manufacturing cost can be reduced, especially when only a small quantity of the laminate is required.