Patent 9694959 was granted and assigned to Bemis Company, Inc. on July, 2017 by the United States Patent and Trademark Office.
The present invention relates to blister components for blister packages formed from multilayer thermoplastic films. In one preferred embodiment of the present invention, the blister component has a layer sequence configuration of A/B/C/B/A. Preferably, layer A is a first exterior layer comprising cyclic olefin copolymer (COC), layer B is an interior layer comprising a high density polyethylene (HDPE), a blend of high density polyethylene, a high density polyethylene nucleation additive and optionally, a hydrocarbon resin (HDPE-Blend), or a bimodal high density polyethylene having a distribution of a low molecular weight region and a high molecular weight region (HDPE-Bimodal), or a high density polyethylene having a thickness of between 38.1 pm to 190.5 pm (1.5 mil to 7.5 mil), layer C is a central core layer. Alternatively, the blister component has a layer sequence configuration of A/B/C/B/D, where layer D is a second exterior layer.