To securely glue, with a simple structure, packaging parts to outer peripheries at both end faces of various kinds of rolled objects different in diameter.

The packaging apparatus includes, in accordance with an outer diameter size of a photosensitive material roll 12, first to third heating heads 144, 146 and 148 mounted on a sliding plate 126. The first to third heating heads 144, 146 and 148 are respectively equipped with first annular projections 150a, 152a and 154a and second annular projections 150b, 152b and 154b which are different in diametric size. Thus, heat welding treatment can be practically done on outer peripheries at both end faces of six kinds of photosensitive material rolls 12 different in outer diameter size.