Mcneil-ppc, Inc.

Kenneth E Fuller

Harry S Sowden

Maximillian Kusz

Timothy J Fuchs

William H Connery, Iii

Donald P Deubel

Kenneth T Yearwood

Lynn A Faughey

Donald H Stuhldreier

A non-through score line is made in the exposed surface of the blister sheet of a blister package. The non-through score line extends from one edge of an individual blister unit to an opposite or adjacent edge, i.e., across the corner of the blister unit. When the blister unit is angulated or flexed back at the non-through score line, the blister sheet will fracture. The smaller portion of the fractured blister sheet, still bonded to a backing sheet, acts as a tab for peeling the backing sheet from the blister sheet exposing the blister contents. Camouflage lines on the blister sheet help hide the score line, thereby rendering the package highly child-resistant.

Blister pill package with safety backing

The invention is a child resistant and easy to use blister package for containing a solid medicament that utilizes a push through and peel mechanism as an opening feature. The multi-section blister card package has an opening mechanism featuring a cut-out in the blister container sheet which is adjacent to the cavity containing the product and a corresponding weakened area such as a perforation or score in the closure sheet positioned slightly inside and adjacent to the edge of the cut-out in the container sheet. The blister is opened by pushing through the closure sheet at the perforation to form a pull-tab which can be used to peel the closure sheet from the container sheet towards the product cavity thereby exposing the product cavity to remove the product.

Push through and peel child resistant blister package

In contrast to typical machines though, the present invention discloses a device which allows the plate to 'float' within the mechanism, so that any inaccuracies in dimensional tolerances between plate and knife are absorbed in a damping of the plate or bed of the mechanism. In this situation, the depth of the cut of the score line can be very reliably controlled, which results in the repeatable manufacturing of a child resistant, yet senior effective package. There is used a spring pre-load for this plate, which is such that cutting takes place yet, as the tool closes, the plate and package come in 'metal to metal' contact, assuring 'near perfect' cuts of the blister package. Extremely high tolerances are maintained, assuring packages which pass all levels and types of QA testing.

Blister package scoring machine

Analgesic container

Analgesic container and cap

Growing community of inventors

Chalfont, PA, United States of America

Kenneth E Fuller