Abstract: The lower edge of the peripheral wall of a can cap and the upper edge of a can barrel are spaced from each other by a gap therebetween. Streams of an inert gas from different groups of injector nozzles are injected, from outside of the gap, through the gap into the can cap and the can barrel, respectively, to replace air in the can cap and the can barrel with the injected gas. Then, the can barrel is fitted in to the can cap, and welded thereto to entrap the injected gas in the can barrel and the can cap.

Abstract: A portion of an endless tying band around a package is displaced from the package thus defining a space between the portion of the tying band and the package. Then, a guide plate is inserted into the space, and the tying band is pressed by the guide roll against the guide plate to grip the tying band between the guide plate and the guide roll. The tying band which is gripped between the guide plate and the guide roll is then severed by a cutter blade. The guide roll is located to deliver an end of the severed tying band for thereby removing the severed tying band from the package.