SYNTHETIC CLOSURE WITH MULTIPLE INTERNAL LAYERS, EACH LAYER HAVING A VARIABLE CROSS SECTION (VCS) ALONG THE CLOSURE LENGTH

摘要

A container closure (17, 29) includes an inner core (19, 31) having a non-cylindrical profile created by a variable longitudinal cross-sectional area. One or more outer layers (21, 33) concentrically surround the core and have a cross-sectional area inversely correlated to the inner core so that the overall container closure has an essentially cylindrical profile.