Ring-hinge protects dental polishing discs

...switching to a metal tin with a polypropylene ring hinge from J.L. Clark. The ring-type closure features tabs on the lid and container ring that lock together easily, even when handled repeatedly.

Each "well" containing the 240 finishing and polishing discs (deeply inset into separate plastic inserts in the base and lid) has its own plastic lid to lock individual discs in place using friction tabs. The ring serves the dual purpose of securing the inserted pieces in place in the lid and base.

--By Jim George, marketing and design editor, PACKAGING WORLD