<p>A packaging machine comprising a rotor having a plurality of radial mandrels (12) each for carrying a container as fitted therearound and intermittently drivingly rotatable so that the mandrels successively stop at processing stations (I to VI) equal in number to the number of the mandrels, a container bottom breaker (18) provided at one of the processing stations, and a container holding device (19) provided at the same processing station as the container bottom breaker and having at least one container pressing member to be pressed against the mandrel at rest at said same processing station over the container fitted around the mandrel.</p>