Supply of pressure-sensitive reinforcements for paper and the like

Claim 1

A SUPPLY OF ADHESIVE REINFORCEMENTS ADAPTED TO BE APPLIED TO PERFORATED LOOSE-LEAF SHEETS OF PAPER FOR USE IN A RING BINDER TO STRENGTHEN THE PERFORATED PORTIONS OF THE PAPER, COMPRISING A TRANSPARENT, READILY-TORN, TAPE OF PLASTIC MATERIAL HAVING A PRESSURE-SENSITIVE ADHESIVE COATING ON ONE SIDE, SAID TAPE HAVING SUBSTANTIALLY CIRCULAR PERFORATIONS, OF A SIZE TO LOOSELY RECEIVE BUT CLOSELY CONFINE BINDER RINGS, SPACED ALONG ITS LENGTH AT DISTANCES APPROXIMATELY EQUAL TO THE WIDTH OF THE TAPE, AND BEING SEVERABLE ALONG TRANSVERSE LINES BETWEEN SAID PERFORATIONS WHEREBY SUCCESSIVE PREDETERMINED PERFORATED PORTIONS OF THE TAPE MAY BE REMOVED TO SERVE AS INDIVIDUAL ADHESIVE REINFORCEMENTS, SAID TAPE ALSO HAVING NARROW, RING-SHAPED ZONES OF UNIFORM WIDTH BORDERING THE EDGES OF THE PERFORATIONS THEREOF, SAID ZONES BEING SPACED FROM THE SIDE EDGES OF THE TAPE AND FROM EACH OTHER, AND BEING PROVIDED WITH NON-ADHESIVE SURFACES TO PREVENT STICKING OF THE TAPE IN SAID ZONES, THEREBY TO MINIMIZE THE LIKELIHOOD OF TEARING OF THE TAPE AT THE PERFORATIONS WHEN THE TAPE IS PEELED FROM A SUPPORTING SURFACE FOR USE.