Package for films

An elongated strip package for flat radiographic film in elongated strip form which is adapted to be wound around a tubular body in multiple abutting helical windings with the film strip portions in adjacent windings of said package in tight edge to edge alignment, said package comprising two elongated webs of thermoplastic material disposed in flat face to face contact with opposite surface of said radiographic film strip, said webs having their corresponding longitudinal side edges pinched tightly against the corresponding side edges of said radiographic film strip and being heat sealed to one another along a line directly proximate with each such side edge of said film strip with substantially zero clearance from said side edge, whereby said radiographic film is enveloped in an intimate, tight-fitting sleeve, preventing any displacement of said radiographic film, and said webs having their opposite ends transversely sealed together adjacent the end edges of said strip to hermetically seal the package.