Patent ID: 7866475
Filing Date: 2011-01-11
Classification: B65D

Abstract:
1. A blister package comprising: a blister formed of a rupture-resistant, semi-rigid material having at least one product well pre-formed therein and a tear-resistant element pre-formed therein spaced apart from said pre-formed product well and completely surrounding and enclosing said pre-formed product well; a blister backing coupled to said blister to enclose said at least one pre-formed product well to enclose a product between said blister and said blister backing; and a weakening formed in said blister and said blister backing in a direction from said peripheral edge toward said pre-formed product well to facilitate tearing of said blister package to access the product in said pre-formed product well; wherein: said pre-formed product well and said pre-formed tear-resistant element are pre-formed in said blister before said blister is coupled to said blister backing; said pre-formed product well and said pre-formed tear-resistant element are spaced apart from each other by a portion of said blister package comprising said blister and said blister backing; said weakening is configured to facilitate tearing of said blister package through and along said weakening from said peripheral edge of said blister package to said pre-formed tear resistant element, and ends at a keyhole spaced apart from said pre-formed tear-resistant element to inhibit further tearing of said blister package along said weakening; and said weakening is interrupted along a path from said peripheral edge to said pre-formed product well by said pre-formed tear-resistant element such that an action in addition to tearing along said weakening must be performed in order to continue tearing from said tear-resistant element through said portion of said blister package positioned between said tear-resistant element and said pre-formed product well to access the product in said pre-formed product well.