Abstract: This disclosure relates to an improvement of a bag-making-and-filling packaging apparatus in which a web supplied from a roll of packaging material is formed into a tube through a tube-forming member and intermittently delivered and the formed tube is filled with a material to be packaged and when the filling is completed, the tube is sealed along the width thereof. The apparatus comprises an improved packaging material delivery device which is effective to assure durability of delivery means and to prevent damage to the packaging material for good packaging finish as well as to increase precision of delivery of the packaging material, and an improved registering device in which setting and adjusting operation of registering is facilitated and the structure associated with a register mark sensor is simplified.