Closure Systems International Inc.

Alcoa Closure Systems International, Inc.

Sohail Sadiq

John C Edie

David E Gevers

William Moll

Navaneeth Bashyam

Pranav M Bhatt

Ramesh M Kamath

Russell Lewis Tartock

David L Cerny

Mark A Powell

David Oles

Lindsey Abney

Greg Mishler

Stephen W McBride

Russ Tartock

John Edie

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 tamper-indicating plastic closure, and tamper-evident package includes a closure wherein the closure includes a pilfer band having a substantially continuous tamper-ring. The tamper-ring extends generally angularly upwardly and inwardly of the closure in a tamper-indicating orientation of the tamper-ring for engagement with a relatively enlarged annular locking ring of the associated container. The tamper-ring includes a plurality of circumferentially spaced projections, which comprise relatively thick regions or shoulders, which act to limit lateral movement of the pilfer band with respect to the container by engagement of at least one shoulder with the associated container generally beneath the container locking ring.

Tamper-evident closure having tamper-indicating pilfer band with projections and package including the tamper-evident closure

Pour spout

Container closure

An apparatus for molding a plastic closure includes a male mold assembly including a forming pin and an outer pin sleeve which cooperate with a female mold for defining a mold cavity. To facilitate mechanical stripping of a molded closure from the forming pin, pressurized air is introduced into the molded closure through at least one air passageway which extends axially between the forming pin and pin sleeve. By outwardly expanding and forming the plastic closure during ejection from the forming pin, forces to which the closure is subjected during ejection are significantly reduced, thereby desirably reducing the amount of cooling of the closure that is required during the molding cycle prior to ejection. Significantly increased operating speeds for the compression molding apparatus can thus be achieved.

Apparatus for molding a plastic closure with air-assisted ejection

Growing community of inventors

Crawfordsville, IN, United States of America

Sohail Sadiq