A method for producing container blanks (2) from a material web (3) by joining opposite wall portions of the material web (3) along connecting portions (11) outlining said container blanks (2), comprising deflecting said material web (3) over a tool holder (4), rotating the tool holder (4) to move tools (5) supported by the same along a working path (WP), and by continued rotation of the tool holder (4), moving the tools (5) along a return path (RP) to the beginning of said working path (WP). Each tool, for providing said joining, is engaged with the material web (3) and moved together with said material web (3) during the movement of the tool (5) along said working path (WP), wherein the tool holder (4) is rotated at such a speed of rotation that each tool (5) maintains its engagement with said material web (3) during the movement of the tool (5) along said working path (WP) for a period of time in the range of 1-2 s.