Abstract: A container or can having a body and end portion which include plastic free ends and which are joined and sealed by cooperatively curling the juxtaposed ends. The body portion has an opening surrounded by a free end suitable for curling. The container end portion has a generally flat or dish shaped central lid portion with a peripheral skirt having a free end adaptable to the container body free end and suitable for curling. The container body and end portions are joined by juxtaposing their free ends so that they form a double wall followed by curling with a curling tool to intimately engage the ends and concurrently curve the perimeters thereof to one another in a tightly curled configuration.

Abstract: In combination, a container and a linerless cap and a method of forming the cap. In the method the cap is molded from plastic and includes a top wall, an outer depending skirt and an internal depending substantially annular wall having an upper end integral with and depending from the top wall and a lower free end. Thereafter the free end is engaged by a curling tool to progressively turn the free end away from the internal wall to curve the free end into a curvilinear compressible and resilient free end adapted to be engaged for sealing. The engageable free end of the seal can have a coil, O, U, J or quarter round cross sectional shape and can be a rim, plug or corner seal.

Abstract: A container or can having a body and end portion which include free ends comprising plastic materials and which are joined and sealed by cooperatively curling juxtapositioned free ends. The method end apparatus of the invention forms the body portion with an opening surrounded by a free end suitable for curling and forms the end portion with a central portion surrounded by a free end suitable for curling. The container body and end portion are joined by juxtaposing their free ends for forming a plurality of walls, then the plastic in at least one of the free ends is provided in a condition at the time of curling which allows stress and related elastic strain and memory to be imparted to the plastic, followed by curling with a curling tool to intimately engage the ends and concurrently curl the perimeters thereof into a tightly curled configuration, wherein at least the one free end includes internal stress and related strain and memory for providing a seam of integrity and reliability.

Abstract: A container-closure system is provided for housing or containerizing a product, which comprises a container body having at least one free end about its perimeter which forms an opening on said container for receiving or discharging said product, and an end portion having a central lid portion and a free end about its perimeter, wherein the end portion is positioned adjacent the container opening such that the container body and end portion free ends are joined together as a seam about the container body opening periphery to join the container end portion to the container body, and to form an annular curled seam projection comprising at least a single curled wall of plastic integral with the container body free end periphery or the end portion free end; and wherein the thus formed annular curled seam projection provides a compressible surface adapted for engaging a cap in sealing arrangement.

Abstract: A container or can having a body and end portion which include plastic free ends and which are joined and sealed by cooperatively curling the juxtaposed ends. The body portion has an opening surrounded by a free end suitable for curling. The container end portion has a generally flat or dish shaped central lid portion with a peripheral skirt having a free end adaptable to the container body free end and suitable for curling. The container body and end portions are joined by juxtaposing their free ends so that they form a double wall followed by curling with a curling tool to intimately engage the ends and concurrently curve the perimeters thereof to one another in a tightly curled configuration.

Abstract: A method for forming a linerless cap for a container, the apparatus for forming the linerless cap and the linerless cap. The cap has a peripheral skirt and a plastic lid with an annular wall adjacent the skirt extending upwardly therefrom, wherein the wall has an inner stretched, softened non-projecting sealing surface which upon engagement compresses and seals.

Abstract: This invention relates to tamper evident closures and packages for indicating teh condition of the packages and particularly to caps for containers or bottles having a stretchable portion which can change color and a separable from the cap, all to provide a clear and unequivocal indicator of the condition of the container or bottle, e.g., that it has been opened or tampered with.

Abstract: A closure system including a cap and a container, the cap including a top wall, a depending skirt having a bottom end and an annular projection integral with the bottom end of the skirt and having a curled free end portion which has grooves formed by threads in the neck when the cap is pressed on the container in sealed relationship.

Abstract: In combination, a container and a linerless cap and a method of forming the cap. In the method the cap is molded from plastic and includes a top well, an outer depending skirt and an internal depending substantially annular wall having an upper end integral with and depending from the top wall and a lower free end. Thereafter the free end is engaged by a curling tool to progressively turn the free end away from the internal wall to curve the free end into a curvilinear compressible and resilient free end adapted to be engaged for sealing. The engageable free end of the seal can have a coil, O, U, J or quarter round cross sectional shape and can be a rim, plug or corner seal.

Abstract: Closure systems including a container having an annular projection integral with the lip of the container having a curled free end portion for engaging a cap and methods of forming and using the same.

Abstract: A cap for a container having a depending wall with a free end adapted to constantly urge engaging means of the cap and the container together upon engagement therebetween. Preferably, the free end of the cap has low hoop stress when axially compressed to provide spring means which perform the required function. In forming the cap, preferably one end is attached at the top wall of the cap, its other end is free to move relative to the cap and a substantial horizontal intermediate element is provided therebetween. In use, the free end has a bearing surface at or beyond the horizontal element thereof.

Abstract: A closure system including a cap and a container, the cap having a seal adapted to be deformed by a deformation producing arrangement in the lip of the container which causes the seal to deformed wherein when the cap is moved and the deformation in the seal is no longer aligned with the deformation producing arrangement in the container the seal is broken. Caps and containers included within the system and methods of manufacture and use of the system are also disclosed.

Abstract: In combination, a container and a linerless cap and a method of forming the cap. The cap includes plastic and has a sealing surface which is softer than contiguous plastic portions as a result of its method of forming which includes stretching. In the method the cap is molded from plastic and includes a top wall, an outer depending skirt and an internal depending substantially annular wall having an upper end integral with and depending from the top wall and a lower free end. Thereafter the free end is engaged by a forming tool to progressively turn the free end away from the internal wall to create a stretched intermediate portion for sealing which is softer than its contiguous portions.

Abstract: In combination, a container and a one piece, linerless cap and a method of forming the cap. The cap includes plastic and has a sealing surface which is softer than contiguous plastic portions as a result of its method of forming which includes stretching. In the method the cap is molded from plastic and includes a top wall and an outer depending skirt. Thereafter the top wall is engaged by a forming tool to create a stretched portion for sealing.

Abstract: A cap for a container and a method of forming the cap. In the method the cap is molded and includes a plastic skirt provided with a line of weakness. An essentially concave surface of a curling tool engages the lower free end of the skirt and curves it into a curled resilient interfering free end which reduces the internal breath of the plastic skirt prior to capping. Upon capping the curled free end is adapted to provide an interference with the container so that upon initial removal of the cap the line of weakness separates to indicate the condition of the container. The interfering curled free end of the plastic skirt can have a coil, O, U or J cross sectional shape.

Abstract: A linerless cap for a container and a method of forming the cap. In the method the cap is molded from plastic and includes a top wall, an outer depending skirt and an internal depending substantially annular wall having an upper end integral with and depending from the top wall and a lower free end. Thereafter the free end is engaged by an essentially concave surface of a curling tool to progressively turn the free end away from the internal wall to curve the free end into a curvilinear compressible and resilient free end adapted to be engaged for sealing. The engageable free end of the seal can have a coil, O, U, J or quarter round cross sectional shape and can be a rim, plug or corner seal.

Abstract: A plastic bottle (10) formed from a preform (30) preferably having an unexpanded long neck (15) with the configuration and dimensions of the finished bottle (10) and an unexpanded handle (16) integral with and extending from the neck (15). The handle (16) includes a support ring (13) integral with the lower end of the neck (15) and an L-shape projection (22 and 24) extending therefrom. The bottle (10) also has an expanded portion (14 and 40) below the ring (13) including a recess (29) which centrally positions the handle (16) to facilitate lifting, carrying and pouring. In forming the bottle (10) in a preferred blow molding embodiment of the invention, the neck (15) remains constant in size while the handle support ring (13) positions and restricts movement of the preform (30) and the expandable portion (38) is blown to form the desired expanded shoulder and body (14 and 40).

Abstract: A multi-container carrier package having releasable interlocking integral attachment sites, such as engaging projections and recesses. Preferably each container has a reduced upper portion, such as the neck of a bottle, and the carrier bridges the space between adjacent containers. Further, the integral attachment site on each container is used to position the label for optimum display, and the configuration and location of the integral attachment sites at the upper portions of the container and the ends or sides of the carrier facilitate their assemblage. Also, the interlocking attachment sites and the configuration of the carrier facilitate gripping thereof for lifting and carrying the assembled package and, when desired, for detachment of the containers.

Abstract: A tamper evident closure and package including a resealable closure (10) for closing, opening and reclosing a container, color changing means (32a in FIGS. 1-6) which effect a color change upon stretching, and coacting mechanical means (24, 36, 44 and 46 in FIGS. 1-6) for uncapping and recapping the closure 10 and for stretching the color changing means (32a) which clearly and unequivocally indicate the condition of the package, e.g., open or closed.Where legends, or other well defined indicia, indicating opening is desired, the color changes can be localized in the skirt by providing thin sections (32a) which stretch preferentially and adjacent thicker sections (38) which remain substantially unstretched. The thin sections (32a) for example can be a legend, or alternatively the thick sections (38) can be the legend while the thin sections (32a) provide a suitable background.

Abstract: A tamper evident closure and package having a container (10), a resealable, substantially rigid closure (12) for closing, opening and reclosing the container (10), color changing means (32a in FIGS. 1-6) which effect a color change upon stretching, and coacting mechanical means (24, 36, 44 and 46 in FIGS. 1-6 ) for uncapping and recapping the closure 10 and for stretching the color changing means (32a) which clearly and unequivocally indicate the condition of the package, e.g., open or closed.Where legends, or other well defined indicia, indicating opening is desired, the color changes can be localized in the skirt by providing thin sections (32a) which stretch preferentially and adjacent thicker sections (38) which remain substantially unstretched. The thin sections (32a) for example can be a legend, or alternatively the thick sections (38) can be the legend while the thin sections (32a) provide a suitable background.