Silgan White Cap LLC

Dennis A Szczesniak

James M Taber

William J Kapolas

Darren R Neputy

Stephen J Kras

Kevin W Orth

Dustin Vance

Sungsuk Steve Kim

Jack Pierce

Mark Hewett

Tian Liang

Wayne Hohl

Kevin Orth

Stephen Kras

A composite closure which includes an improved sealing gasket material and shape. The Closure includes an end panel that is received in a circular plastic fitment having a central opening therein defined by an inwardly extending flange which over-lies in an outer periphery of the end panel and an integral skirt downwardly depending from the flange. The fitment includes an inwardly extending circumferential bead or bead segments which include a substantially non-deformable flat vertical surfaces that are substantially parallel to the axis of the closure and axially positioned to contact the radial outer-most edge of the end panel when the closure is fully applied to a container. The sealing gasket has the shape of an annulus with a particular cross-section and formed from a PVC free material.

Composite closure having improved seal

Described is one or more embodiments of closures that include a pressure-relieving feature in a third plug. In one embodiment, the pressure-relieving feature is a gap within the third plug. In another embodiment, the pressure-relieving feature includes one or more recesses within inner surface of the third plug, thereby providing fluid communication between an outer surface of the second plug and the ambient air outside the closure.

Sealing structures for closure

A metal closure having multiple thread engaging lugs configured to decrease the pressure exerted by the closure lugs on the neck of a container is provided. In various embodiments, the metal closure comprises a top wall, a skirt extending downward from a peripheral edge of the top wall, a lower edge included on the skirt, and a plurality of lugs formed at the lower edge of the skirt. Pressure may be decreased by the closure having more lugs and/or larger lugs than other metal closures.

Metal closure with low pressure engagement lugs

Closure

A system and method for injecting pressurizing fluid into a filled and sealed container is provided. The container is filled with a product and is then sealed with a closure. A pressurizing fluid is injected through the closure into the container cavity after sealing and filling.

Fluid injection system and method for supporting container walls

A closure that includes a top panel and a skirt extending downwardly from a peripheral edge of the top panel is provided. The skirt terminates in a plurality of spaced thread engagement flanges for engaging the thread of the neck of a container. The closure includes a polymer-filled channel which connects the top panel to the skirt. When engaged with the threaded neck of a container, the neck is forced into the channel and engaged by the polymer so that the channel and polymer provide lateral rigidity to the neck. This rigidity prevents the neck from deflecting from the forces resulting between the threads and thread engagement lugs when the forces therebetween are increased to the level required to adequately seal the closure to the container.

Metal closure and seal combination for maintaining the shape of a plastic container neck

Retortable packages including plastic closure caps are disclosed. The closure cap includes an end panel and a liner applied to the end panel. The finish contacting surface of the liner has a profile that is generally arc-shaped or torroidal-like prior to contact with the finish.

Growing community of inventors

Lemont, IL, United States of America

Dennis A Szczesniak