Abstract: The packaging machine for producing packages from a packaging material web has a feeding chain for feeding the web. The endless feeding chain is mounted on spaced sprocket wheels and has chain links provided with improved clamping members for clamping the web at one of its lateral edges. The clamping members include on each chain link a first clamping member secured on or integral with the associated chain link, a cooperating second clamping member having a guiding shaft guided in a guiding opening of the first clamping member, a flanged sleeve surrounding the guiding shaft with its flange portion adjacent the first clamping member and a pressure spring engaging between the flange portion and an abutment member mounted on one end of the guiding shaft opposed to the second clamping member.