Binder for catalogues and magazines - with grooves at centre of polypropylene sheet forming spine

摘要

A binder for catalogues and magazines has a sheet of polypropylene grooved in its central section to form a spine. The spine pref. has slots at each end opening into perforations. An elastic band pref. runs between each pair of opposite slots at the level of their perforations to hold documents in the binder.