A container system and a method for forming a knob in a container. The container system includes a container, in particular a medical or surgical sterile container preferably having a tub-like container vessel and/or a container cover; at least one separate coupling element; and at least one coupling system for releasably connecting the coupling element to the container. The coupling system includes a male coupling portion formed on the container and a female coupling portion formed on the coupling element. The coupling portions can be coupled to and uncoupled from one another. The male coupling portion is integrally formed in a wall of the container and is designed as a protruding knob having an undercut.

A container system and a method for forming a knob in a container. The container system includes a container, in particular a medical or surgical sterile container preferably having a tub-like container vessel and/or a container cover; at least one separate coupling element; and at least one coupling system for releasably connecting the coupling element to the container. The coupling system includes a male coupling portion formed on the container and a female coupling portion formed on the coupling element. The coupling portions can be coupled to and uncoupled from one another. The male coupling portion is integrally formed in a wall of the container and is designed as a protruding knob having an undercut.

A button product manufacturing device includes a printer including a housing including a cassette configured to accommodate a print medium and a first accommodation chamber configured to accommodate the cassette, and the printer being configured to perform printing on the print medium, a die set configured to connect a front member covered with the print medium and a back member to each other to manufacture a button product, and a conveyor that is configured to convey the print medium from the printer to above the front member in the die set, the conveyor being configured to be attached to and detached from the housing. A direction in which the cassette is pulled out from the first accommodation chamber and a detachment direction in which the conveyor is detached from the housing are the same.