PLASTIC MULTI-RING PAPER BINDING SYSTEM USING ONE PIECE COVER

摘要

A binder apparatus for use in binding together sheets of paper, each correspondingly pre-aperatured with multiple openings along a margin includes a three panel one piece cover with a front and rear cover connected by a smaller cover spine portion with parallel scores defining respectively pivotal connections between each of the covers and the spine portions. A plastic ring-type binder includes a spine having an inner concave surface and an outer convex surface and parallel side portions, one side portion having multiple closely spaced flexible rings extending therefrom each with a single free end portion. One or more elongated adhesive bead member extends along the plastic spine convex surface and positioned adjacent the scores and the spine end portions thereof, bonding the spine to the cover set at the cover spine portion thereof.