A cap for a container is provided and a related method for making the cap. The cap comprises a side wall extending about an axis and a transversal wall arranged at an end of the side wall, a separation line being provided on the side wall for defining: a retaining ring, which is intended to remain anchored to a neck of the container and is configured to internally engage with an enlargement of the neck; and a closure element which can removably engage the neck, so as to open or close the container. The separation line extends about the axis and is circumferentially interrupted so as to leave a joining portion, between the retaining ring and the closure element, which extends circumferentially for a respective angle, the cap further having an incision line which extends transversally to the axis between the separation line and a free edge of the retaining ring, so that two connecting bands are defined between the separation line and the incision line, the two connecting bands joining the retaining ring to the joining portion. The connecting bands are deformable and the joining portion is externally provided with a projection which projects from the joining portion and is positioned between a separation plane in which the separation line lies and the incision line so that, when the closure element is in the open position and the connecting bands keep the closure element connected to the retaining ring, an edge of the joining portion which, in the closed position, faces the retaining ring, is facing, in the open position, towards a rim of the neck and the projection is resting on the neck in said open position.

A tamper-evident closure for a container is provided. The closure comprises a base attachable to a container neck. The base comprises a sidewall having a tamper-evident drop band, the band including an abutment for engaging the container neck to cause the band to break away from the sidewall if an attempt is made to remove the closure from the neck once fitted. The band further comprises an extension against which the sidewall pushes if the closure is reapplied to push the band away from the base. The extension extends only part of the way around the band.

A synthetic-resin container lid having tamper-evident characteristics, which is not separated in its entirety from a mouth-neck portion of a container even after the mouth-neck portion of the container is unsealed, is manufactured rapidly and inexpensively. A plurality of scores (26, 30, 32, 34, 36, 38) are formed, as post-processing, at predetermined positions in an incomplete container lid formed with no scores.

A closure includes: a body having a skirt wall in which an internal thread is formed; and a cylindrical tamper evident bottom portion which is connected to the skirt wall via a plurality of breakable bridge portions, and in which an engaging means to be engaged with an engaging jaw portion is disposed on an inner peripheral surface of the tamper evident bottom portion. A protruding piece protruding downward is disposed on the skirt wall of the body. An unbroken connecting piece is disposed to connect the skirt wall of the body and the tamper evident bottom portion and to allow the body to be moved upward with respect to the tamper evident bottom portion. An extending portion is formed at an engaging piece serving as the engaging means at least in an angle region where the protruding piece is present.

A cap includes a cap body including a top plate portion and a skirt portion; a sealing member that is a separate member from the cap body and is provided in the cap body, the sealing member having an outer diameter smaller than an inner diameter of the skirt portion; a plurality of locking portions provided in a circumferential direction of the skirt portion, and configured to regulate a movement of the sealing member in a direction away from the top plate portion and support the sealing member; and a plurality of regulating portions provided in the circumferential direction of the skirt portion, protruding inward in a radial direction than an inner peripheral surface of the skirt portion, and configured to regulate a radial movement of the sealing member.

The invention relates to a closure consisting of a screw cap (10) with a tamperproof strip (3). The screw cap has at least one cylindrical cap casing (2) with an inner thread and a circumferential tamperproof strip at the lower open end of the cap casing, said tamperproof strip being connected to the lower edge of the cap casing along easily tearable weakness lines (13, 14), wherein the tamperproof strip remains captively connected to the cap casing after a tearing process along the weakness lines by means of holding strips (15, 16). The aim of the invention is to design a captive screw cap with a tamperproof strip in such a manner that after the screw cap has been unscrewed and released from the bottleneck opening, the screw cap is folded away or tilted into a position in which the screw cap does not interfere with the additional use of the bottle or with pouring or drinking out of the bottle and can remain there without additional measures. According to the invention, this is achieved in that the holding strips are formed by two weakness lines, each of which is interrupted at least once in the circumferential direction and which partly overlap in the circumferential direction and run at an axial distance to each other at least in the overlap region. The separating web (11, 12) of each of the two weakness lines is bridged by the respective other weakness line preferably at an axial distance.

Container assembly comprising a container and a closure, wherein the container is made of a crystallisable polymer material and comprises a neck portion with an outer cap surface and defines an outlet opening, the neck portion being configured for receiving the closure, wherein the closure includes a closure cap made of a crystallisable polymer material and has an inner cap surface, the closure cap being matched to the neck portion of the container to cover the outlet opening in a closed state, wherein the inner cap surface of the closure cap contacts the outer cap surface of the neck portion when the container assembly is closed, and wherein the material of the inner cap surface of the closure cap and/or of the outer cap surface of the neck portion is crystallised, to allow the container assembly to be opened after being closed for an elongated period of time.

A closing cap for a container includes a separating line on a lateral wall forming a retaining ring, configured to remain anchored to a neck of the container and extending up to a free edge. A closing element is engageable with the neck, to open or close the container. The separating line is circumferentially interrupted to define in the lateral wall a joining zone, extending at a first angle, in which the retaining ring and the closing element are joined. An engagement element of the retaining ring is bent when the cap is closed. First and second incision lines allow deformability of a connecting portion and a region of the engagement element extending at a second angle, so that when first opening the closing element, the region goes beyond the locking ring and deforms to rest on the locking ring in an extended configuration.

A closure may have a top wall and a side wall depending from the top wall. A plug seal device may depend from said top wall within the side wall. The plug seal device may have an upper section, a lower section, and a sealing section proximate the boundary between the upper section and the lower section. The sealing section is operable such that when the plug seal device is inserted in an opening to an inner cavity in a container, the sealing section engages with an inner container surface to provide a seal between an inner cavity of the container and the external environment.

A compact cap with an opening block, after opening, for a container having a mouthpiece, includes a base ring preventing separation from the mouthpiece, a protective cap or cover for opening and closing the mouthpiece, a hinge arrangement that makes the base ring and the cover integral, and frangible bridges, which connect a lower edge of the cover with an upper edge of the base ring when the cover is closing on the ring base and the mouthpiece. The hinge arrangement includes a plurality of spaced strips or bridges, which connect the cover and the base ring, and an extension enlarged outwardly, which forms an integral part of an annular collar and is obtained at the lower end of the cover, and which becomes engaged with the mouthpiece when the cover is rotated from a closed position to an open position to provide a stable open position of the cover.