US 11,999,534 B2
Composite closure having improved seal
Mark Hewett, Downers Grove, IL (US); Dennis Szczesniak, Lemont, IL (US); William J. Kapolas, Goodyear, AZ (US); Darren Neputy, Palos Hills, IL (US); Tian Liang, Aurora, IL (US); and Dustin Vance, Lombard, IL (US)
Assigned to Silgan White Cap LLC, Downers Grove, IL (US)
Filed by Silgan White Cap LLC, Downers Grove, IL (US)
Filed on Mar. 8, 2022, as Appl. No. 17/689,395.
Application 17/689,395 is a continuation of application No. PCT/US2022/017220, filed on Feb. 22, 2022.
Claims priority of provisional application 63/152,514, filed on Feb. 23, 2021.
Prior Publication US 2022/0267054 A1, Aug. 25, 2022
Int. Cl. B65D 43/02 (2006.01); B65D 53/02 (2006.01); F16J 15/10 (2006.01)
CPC B65D 43/0283 (2013.01) [B65D 53/02 (2013.01); F16J 15/10 (2013.01); B65D 2401/15 (2020.05); B65D 2543/00092 (2013.01); B65D 2543/00314 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A composite closure for a container, the composite closure comprising:
a circular plastic fitment having a central opening defined by an inwardly extending circumferential flange and a downwardly depending skirt extending from the flange;
an end panel received in the fitment, an upper, outer peripheral surface of the panel underlying a bottom surface of the flange and in intimate contact therewith when the composite closure is fully applied to a container;
the skirt of the plastic fitment including a radially inwardly extending circumferential contact bead that includes a substantially non-deformable vertically flat surface in cross-section that is substantially parallel to a vertical axis of the closure and axially positioned for contact with a radial outermost surface of the end panel when the closure is fully applied to the container, the bead being sized so that the vertical contact surface thereof imparts a predetermined radial force on the radial outermost surface of the end panel which produces a perceptible resistance upon initial rotation of the closure from its fully applied state and provides assurance to a user that the composite closure has been fully applied to the container prior to the initial rotation; and
an annular sealing gasket formed directly on the end panel to define a unitary integral fitment and gasket arrangement, the annular gasket having a ring shaped body, the gasket having a profile capable of forming a seal when the closure is applied to a container, wherein the gasket is composed of a non-PVC material and wherein the material comprises at least one type of rubbery block copolymer and a thermoplastic polymer.