Transport neck ring.

摘要

A carrier ring (10) for achieving attachment to the thermoplastic perform (50) as the preform is formed in a split injection mold (39) is disclosed. The split injection mold (39) defines a mold cavity into which a core pin (32) is positionable. The mold cavity, along with the positionable core pin, defines the principal portion of the preform cavity. The remainder of the preform cavity is provided by an annular groove (17) in the carrier ring (10). This annular groove (17) has a substantially horizontal outwardly extending first wall (18), a substantially horizontal inwardly extending second wall (22) downwardly displaced from the first wall (18), and a downwardly and inwardly extending third wall (20) emanating from the outwardmost extent of the first wall (18) and terminating at the inward most extent of the second wall (22).