MOISTURE IMPERVIOUS COVER SHEET FOR UNIT DOSE PACKAGING

摘要

A barrier sheet for securement to the cover sheet of a multi-compartment medicinal dispensing device to render the cover sheet impervious to moisture. The device also includes a base to which the cover sheet is secured. The cover sheet includes plural closures releasably secured to one another along weakened lines. The barrier sheet is formed of a moisture impervious plastic and has a central portion, a top edge portion, a bottom edge portion and an opposed pair of side edge portions. The central portion and the edge portions each include an adhesive underside surface. The central portion includes plural weakened lines corresponding to the weakened lines in the closures of the device. Each of the edge portions of the barrier sheet is in the form of an elongated foldable flap. The barrier sheet is secured to the cover sheet by disposing it on the cover sheet with the weakened lines of the barrier sheet coincident with the weakened lines of the cover sheet and with the adhesive on the underside of the barrier sheet in contact with the cover sheet. The flaps are folded around the edges of the cover sheet and into securement with the device base to seal the edges of the cover sheet.