Abstract: This relates to a closure with a drop down tamper indicating band and a related container finish. The container is provided with a neck finish which includes below threads thereof a radially outwardly projecting bead which carries a plurality of circumferentially spaced, vertical nibs. The closure is constructed to be rotated relative to the container neck finish during the removal thereof and includes a lower tamper indicating band which is secured to the closure skirt by a plurality of rupturable bridges. The band has formed on the inner surface thereof a plurality of circumferentially spaced, radially inwardly projecting, axial splines which may be considered as arranged in pairs for receiving therebetween a container nib.

Abstract: A container closure formed from a thermoplastic polyolefin, e.g. polypropylene, which has been molded and adheres simultaneously to a coated foil, e.g. an aluminum insert, to which a conventional plastisol gasketing compound may be adhered to provide a hermetic container seal under hot fill and retort conditions. In order to facilitate adhesion to both the polypropylene closure panel and the PVC plastisol gasketing compound, a dead soft aluminum foil web was first coated on one side with an organosol utilizing a gravure coater, after which the coated web was passed through an oven. The partially coated web was then coated with a primer dispersion again utilizing a gravure coater, after which the coated web was passed through a second oven. A layer of polypropylene homopolymer was applied to the primer and inserts were die cut from the resultant web. The inserts were incorporated in a closure injection molding apparatus and a plastic closure injection molded thereabout.

Abstract: This relates to the securement of a flowed-in plastisol liner in a plastic closure member. The closure member is provided with a channel-shaped seat into which plastisol material is flowed, and after which the plastisol material is cured. Air which is normally entrapped between the plastisol liner and walls of the seat is greatly reduced by providing a seat with a plurality of abutments or projections which extend into the seat and the base thereof and wherein the abutments are generally of a tapered configuration and terminate in the base in fillets or radii which permit the flow of air from around the abutments as the plastisol liner material is flowed into the seat. Also, top portions of the abutments are provided with interlocking elements in the form of slots, crosses and the like into which the liner material flows and forms a mechanical interlock between the plastisol liner and the abutments, thereby preventing relative rotation between the plastisol liner and the closure member.

Abstract: This relates to a plastic material closure which is provided with deformable sealing flaps and cooperating abutments wherein when the closure is drawn down onto a container, the flaps will deform in accordance with the cross section of the sealing surface area of the container including down inside of the mouth of the container and down alongside the exterior surface of the neck finish to provide effective sealing contact with the container sealing area. Separate seals between the flaps and the container neck finish permit the same closure to be used to form gas-tight seals both with respect to high internal pressures and vacuum packs. The seals are liquid-tight and the closure may be used for reclosing the container against liquid loss.

Abstract: This relates to an improvement in the neck finish of a container and skirt of a cooperating closure to eliminate or substantially reduce squaring which exists in present closure-neck finish arrangements. The neck finish is constructed so as to control the torque required to apply the closure after it has been seated, thereby holding to a maximum the pressures which normally effect squaring. At the same time, the neck finish is provided with a supporting surface engageable by the closure skirt so as to permit supporting of the closure skirt against the undesired squaring.

Abstract: A closure for packaging products in a container under pressure conditions other than atmospheric. "Doming" or depression of the central panel portion of the closure end wall is prevented by a rib reinforcement.

Abstract: This relates to a closure member for containers wherein products are packaged under pressurized conditions. The closure member has a flowed-in liner, and in order to prevent relative movement between the liner and the closure member of the closure assembly, there is provided an interlock between the base of the liner and the base of a channel in which the liner is formed. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of the application.

Abstract: This disclosure relates to a closure for containers primarily of the tumbler and carafe types and wherein the containers are formed of glass or glass-like materials. The closure is particularly identifiable by a downward and radial extension of the normal sealing ring to define a lug structure which interlocks with the exterior finish of the container and serves to retain the closure in place, both initially and upon reclosing. If desired, a shrink band or tape may add to the initial holding of the closure in place. Advantageously only the gasket material of the sealing ring is engaged with the finish of the container. The closure is distortable by diametrically squeezing the skirt thereof so as to break the initial seal in the event the product is vacuum packed.