Patent ID: 6660349
Filing Date: 2003-12-09
Classification: B29C,B32B,B65D,Y10T

Abstract:
A plastic closure that comprises:a closure shell having a base wall, a peripheral skirt for securing the closure to a container, and an annular lip extending from said skirt adjacent to said base wall and defining an inside lip surface at an acute angle to said base wall, and a liner compression molded in situ onto said base wall within said lip, said liner having a liner base portion extending along said base wall and a peripheral portion extending along said lip surface, said liner as molded having an interior surface that has a first flat axially facing surface portion on said base portion adjacent to said peripheral portion, an inwardly concave surface portion where said base portion blends into said peripheral portion, a second flat axially facing surface portion at an axial edge of said concave surface portion, and a conical surface portion that extends from a radially outer edge of said second flat surface portion to said inside surface of said lip.