TAPERED THREAD STRUCTURE

摘要

In one embodiment there is provided a novel container neck finish (62) having a substantially cylindrical exterior wall surface (68) surrounding an orifice (66) defined in the container and a thread structure (70) positioned about the exterior wall surface. The thread structure has at least a first portion and a second portion. Each portion has a corresponding effective maximum diameter, wherein the effective maximum diameter of the first portion is less than the effective maximum diameter of the second portion.