Closure Systems International Inc.

Pranav M Bhatt

Navaneeth Bashyam

John C Edie

David E Gevers

Sohail Sadiq

William Moll

Russell Lewis Tartock

Thomas J McCandless

Ramesh M Kamath

Dave Gevers

Russ Tartock

A plastic closure embodying the principles of the present invention comprises a closure cap having a top wall portion, and an annular skirt portion depending from the top wall portion. The skirt portion includes an internal thread formation for threaded engagement with the external thread formation of an associated container. In order to facilitate high-speed application, and minimize the use of polymeric material, the closure is configured to exhibit a variation in retention force which decreases in a direction away from the top wall portion of the closure cap.

Plastic closure with enhanced performance

A plastic closure is disclosed which is configured for enhanced performance and reduced closure weight. Notably, the closure includes a compound, internal helical thread formation including an upper retention portion which provides desired closure hoop strength and sealing performance, and a lower guide portion which is configured for light weight while functioning to guide the closure onto an associated container during application. The closure can further include a stepped top wall portion having a relatively thick outer region, and a relatively thin central region. A tamper-evident band of the closure can be configured to include a deformable free edge portion for enhanced tamper-resistance.

Container closure

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Crawfordsville, IN, United States of America

Pranav M Bhatt