Abstract: A closure is provided with a thread configuration adapted for snap-on or screw-on application to a container neck finish. The closure is optionally provided with at least one member attached to the tamper-indicating ring which cooperates with the arcuate projection to assist in breaking said tamper indicating ring during removal of the closure from the container neck.

Abstract: A culture/centrifugal tube includes a tube and a cap. The cap has a disk portion and an annular portion that define an annular groove therebetween. The annular groove opens at a position level with the surface of the disk portion. The open end of the tube extends into the annular groove, with the open end of the vessel in abutment against the surface of the disk portion when the cap is fully engaged on the tube. An angle rotor that is used in a centrifuge is formed with an accommodation hole that receives the culture/centrifugal tube. The accommodation hole including a smaller-diameter tube accommodating portion that accommodates the tube and a larger-diameter cap accommodating portion that accommodates the cap. The cap accommodating portion includes a region that entirely encompasses a corresponding portion of the outer periphery of the annular portion of the cap.

Abstract: Sanitizing sponge disinfectant container bowls are disclosed, which are deep enough to hold cleaning sponges completely submerged in a disinfectant fluid. These containers are equipped with lids having downward projecting shafts or rotatable screw bolts which fit into the container bowl and press down on a sponge being sanitized. The lids are of sufficient weight to hold the sponges submerged in the disinfectant fluid. The container bowls are also provided with open ribbed rates against which or between which the sponges are held to facilitate the greater exposure of the surfaces of the sponges to the disinfectant fluid for improved cleansing.

Abstract: A closure for a container for holding contents therein generally comprises a surface for gripping the closure in order to twist it in either direction to open it. The closure has downwardly projecting teeth on its underside; the container has upwardly projecting teeth, which mate with the downwardly projecting teeth of the closure. An outer ring on the closure circumscribes and holds in place the upper lip of the container in the closed position. Twisting of the closure in either direction causes the closure to be released from the container.

Abstract: A package, especially for granular, powdered or fluid product, includes a container with a spout extending upward and inward from a threaded neck and then flaring outward to terminate in a circular rim forming a wide mouth container opening. A closure as an end wall coextensive with the container rim in a skirt curving downward and outward with threads formed on an inner surface at a cylindrical lower end. Sealing elements include an annular sealing flange extending downward and inward from the end wall and having an outer sealing surface which seals against the inner surface of the flared portion of the container. An upper portion of the inner surface of the skirt formed by an annular rib extends downwardly and outwardly from the end wall to form an upwardly converging gap into which the flared portion is wedged as the closure is applied to the container.

Abstract: A snap-on plastic closure for a container includes a top wall portion, an annular skirt portion depending from the top wall portion, and a removal tab projecting forwardly from the skirt portion for manipulation of the closure during removal. A sealing plug depends from the inside surface of the top wall portion for disposition generally within the mouth of an associated container. The skirt portion of the closure includes a deformable region positioned beneath the removal tab so that during closure removal, the deformable region is permanently stretched and deformed for tamper-indication.

Abstract: A closure is provided with a thread configuration adapted for snap-on or screw-on application to a container neck finish. The closure is optionally provided with at least one member attached to the tamper-indicating ring which cooperates with the arcuate projection to assist in breaking said tamper indicating ring during removal of the closure from the container neck.

Abstract: A closure (2A) overlies a liner (6) which seals a container mount defined by a peripheral edge (12) of the container. The liner (6) includes a sealing flange (31) having an upstanding outermost terminal rim (40) of resilient material which is folded inwardly during closing movement of the closure shell (2A) toward the sealing flange (31) to form an unflattened fold constituting a biasing means for biasing the periphery of the sealing flange (31) against the peripheral edge (12) of the container mouth.

Abstract: The pump dispenser plug is a flexible, conical plug that could be easily adapted through the use of removable layers to fit any type of pump dispenser container. When the container is not in use, the plug would be inserted into the pump nozzle opening to prevent the contents from drying and collecting on the outside tip. The plug has a circular base with a perpendicular shaft upon which is mounted a conical structure comprised of removable layers. The conical layers are formed of flexible plastic, and each has a longitudinal access slit cut along its outer surface. To reduce the size of the plug for smaller nozzle openings, the user would simply peel off the appropriate number of layers and discard them.

Abstract: Larger gas tight containers for products such as carbonated or pressurised drinks require a resealable sealing assembly. The gas leakage through the assembly in its ex-factory sealing condition determines the shelf life of the product. The present assembly provides a foil (8) across a neck (10) of the bottle. The foil is supported in the ex-factory sealing condition by a plate (4) of a plug (36) which depends from an over cap (4). The over cap is screwed to an outer wall of a tubular spout (6) that surrounds the neck (10) of the bottle. In the resealed condition the plug can be screwed deeper into the neck so that a secondary seal is formed between the plate and the neck.

Abstract: A container assembly comprises a container having a sealing surface, and a cap having a sealing surface. The sealing surface of the container, the cap, or both is prepared by either being made of a coarse texture or polished so that the sealing surface of the container and the cap may cooperate with one another to form a seal, yet allow gas to flow into or out of the container assembly, as required.

Abstract: A cap, which can be attached to a container having an annular opening, includes a top wall and an annular skirt portion. The top wall includes an inner surface and rigid sealing members which seal an inner and outer edge of the opening through the engagement of first and second rigid members with edges of the opening and which exert a force on the container to cause the container to attach in a proper position. The annular skirt portion, disposed along an outer circumference of the top wall and extending downwards, includes internal threads configured to seal the cap onto the container, longitudinal ribs for increasing the friction on the annular skirt portion, and a pilfer band.

Abstract: The present invention provides a closure with a thread configuration adapted for snap-on or screw-on application to a container neck finish. The closure is optionally provided with at least one member attached to the tamper-indicating ring which cooperates with the arcuate projection to assist in breaking said indicating ring during removal of the closure from the container neck.

Abstract: A container closure formed from a synthetic resin as a single unit has a circular top panel wall and a cylindrical skirt wall extending downwardly from the peripheral edge of the top panel wall. An outer cylindrical sealing protrusion, an inner cylindrical sealing protrusion, and annular sealing ridge, all having a predetermined shape and a predetermined size, are formed on the inner surface of the top panel wall. In one embodiment, the thickness of the center portion of the top panel wall is reduced to a predetermined range and a plurality of ribs having a predetermined thickness are formed on the inner surface of the center portion of the top panel wall.

Abstract: A lid for a container is provided generally comprising a main body and a door having a flip section pivotally connected to a push section, the push section pivotally connected to the main body. The main body includes a recess that defines a pivot wall. The flip section is positioned to engage the pivot wall and rotate relative to the push section in response to downward pressure on the push section. The floor of the recess includes a dispensing hole sized to dispense large items. Preferably, the dispensing hole is sized to accommodate a person's fingers while gasping an item. Additionally, the flip section of the door includes a sealing ring projecting from the underside of the door. The sealing ring is sized to engage the inner periphery of the dispensing hole to provide a seal to preserve organic or other perishable items.

Abstract: A two-piece cap assembly for closing an opening in a neck portion of the container is provided that includes a cap body having a top wall and a depending annular skirt for screw attachment to the neck portion of the container. A plug seal is attachable to the underside of the top wall of the cap body. The plug seal and the cap body are relatively rotatably coupled for independent rotation of the cap body with respect to the plug seal upon attachment and detachment of the cap to the neck portion of the container.

Abstract: A container closure formed from a synthetic resin as a single unit has a circular top panel wall and a cylindrical skirt wall extending downwardly from the peripheral edge of the top panel wall. An outer cylindrical sealing protrusion, an inner cylindrical sealing protrusion, and annular sealing ridge, all having a predetermined shape and a predetermined size, are formed on the inner surface of the top panel wall. In one embodiment, the thickness of the center portion of the top panel wall is reduced to a predetermined range and a plurality of ribs having a predetermined thickness are formed on the inner surface of the center portion of the top panel wall.

Abstract: A tamper-evident, snap-on, screw-off closure is used with a specially shaped container neck. One neck has double lead external threads and, below the threads, a conical wall having external ratchet teeth. The closure has an upper skirt having internal threads mating with the neck threads. A conical lower skirt is connected to the upper skirt by a plurality of frangible bridges. The lower skirt has internal ratchet teeth to mate with the neck ratchet teeth. The cap skirt threads are double pitch and slightly over 360° in length. When the cap is applied to the neck it snaps on in two stages. The lower skirt has a tear tab which, when pulled, fractures the lower skirt on a vertical line. Continued pulling on the tab sequentially fractures the bridges. Another neck has a neck stretch with multiple neck threads and a locking wall below the neck stretch with a plurality of external teeth.

Abstract: A closure system useful for storing fluids under cold storage conditions. The closure system includes cap and container components which combine to form a dual sealing system. The container has a generally cylindrical side wall, a closed bottom end, and an open top end having an inner beveled lip depending from an annular top rim. The cap has a generally circular top wall from which inner and outer skirts depend. The outer skirt is adapted to grip the open top end of the container. The inner skirt includes an outer surface having a lower seal bead and an upper beveled portion mated with the beveled lip. When the cap is fitted onto the container, the seal bead contacts an inner surface of the container and the upper beveled portion and the beveled lip are engaged in an interference fit, thereby impeding the loss of fluid from the closure system under cold storage conditions.

Abstract: A retortable all-plastic closure having a generally circular top portion and a generally cylindrical downwardly depending skirt. The top portion has upper and lower surfaces. The lower surface of the top portion forms a circumferentially extending ridge that projects downwardly. The ridge forms a first structural wall. A second structural wall is formed in the top portion adjacent the first wall. A flexible liner made from a thermoplastic elastomer is bonded to the lower surface. The portion of the liner covering the first structural wall forms a downwardly extending liner wall. The portion of the liner covering the second structural wall forms a top liner wall. The diameter of the downwardly extending liner wall is greater than the diameter of the top of the container neck inner wall to which the closure is applied so that the container neck compresses substantially the entirety of the downwardly projecting liner wall.

Abstract: An improved protective cap and method for capping medical male luer fittings is provided. The protective cap may include inner and intermediate annular members extending from an end wall and defining a slot therebetween. At least one and preferably a plurality of depressible members project from an outer surface of the inner annular member, wherein the depressible member(s) conforms to the internal threads of a male luer fitting upon interconnection. For such purposes, the depressible member(s) may comprise a resilient material, e.g. most preferably having a modulus of elasticity of between about 5000 psi and 20000 psi. Each depressible member may be of an arcuate configuration in cross-section to present a convex surface for depressible engagement by the collar of a male luer fitting when positioned in the annular slot. The protective cap may be readily employed in automated capping/uncapping procedures via direct linear advancement/retraction relative to a male luer fitting.

Abstract: The invention provides a container closure (2) assembly comprising: a container neck (1) having side walls defining an opening at one end thereof and a lip (5) extending around the opening, wherein an inner surface (7) of the side walls proximate to said lip (5) is inwardly tapered; a closure (2) for said neck (1), the closure (2) having a base portion (3) and a skirt portion; a first screw thread on the neck (1); a second screw thread on an inner surface (7) of the skirt of the closure (2); said first and second screw threads being configure to enable a user to secure, remove and resecure the closure (2) into a sealing position on the neck (1) by rotation of the cap on the neck (1); a sealing plug (8) extending from said base portion (3) of the closure (2) inside and substantially concentric with said skirt portion of the closure (2), wherein the sealing plug (8) comprises a plurality of circumferential sealing ribs (9) on an outer surface of said sealing plug (8) for engagement with said inner surface (7) o

Abstract: A container closure has a top panel wall, and an annular seal piece and an annular contact piece are integrally formed in an outer peripheral edge portion of an inner surface of the top panel wall. The annular seal piece is of such a shape as to be deflected radially outwardly upon contact with the cylindrical outer peripheral surface of the mouth-and-neck portion of a container. The annular contact piece is brought into contact with an annular boundary surface extending from an annular top surface to an annular outer peripheral surface of the mouth-and-neck portion of the container when viewed arcuately in a sectional view. An annular thin-walled region positioned radially inwardly of the annular seal piece and the annular contact piece are further formed in the outer peripheral edge portion of the inner surface of the top panel wall.

Abstract: A resealable barrier closure for a container with an open top and an annular snap ring below the open top. The closure includes a shell having an outer skirt dimensioned to telescope over the open top of the container. The outer skirt has a snap ring for engaging the snap ring on the container. The shell further includes an inner skirt to telescope into the open top of the container. An elastomeric diaphragm is sealingly engaged in the inner skirt. A barrier cup extends across the bottom face of the diaphragm and telescopes upwardly over the inner skin. The barrier cup initially is sealed hermetically to the container and to the plastic shell. The container may be opened by urging the plastic shell upwardly with sufficient force to break the seal between the barrier cup and the container. The container then may be resealed by merely urging the closure back over the open top of the container.

Abstract: A closure for a container with a neck portion and an external helical thread formed on the neck portion includes an upper wall and a skirt formed integrally with and extending generally downwardly from the upper wall. An internal helical thread is formed on the skirt for engaging the external helical thread of the neck portion to thereby secure the closure to the container. The internal helical thread is preferably asymmetrical in cross section. A first annular seal extends generally radially inwardly toward a central axis of the closure from the inner skirt surface. The first annular seal sealingly engages the outer surface of the neck portion. A second annular seal extends generally axially downwardly from the upper wall and sealingly engage an inner surface of the neck portion. A thickness of the neck portion between the first and second annular seals is greater than the distance between the first and second annular seals before installation of the closure on the container.

Abstract: A tamper-evident, snap-on, screw-off closure is used with a specially shaped container neck. One neck has double lead external threads and, below the threads, a conical wall having external ratchet teeth. The closure has an upper skirt having internal threads mating with the neck threads. A conical lower skirt is connected to the upper skirt by a plurality of frangible bridges. The lower skirt has internal ratchet teeth to mate with the neck ratchet teeth. The cap skirt threads are double pitch and slightly over 360° in length. When the cap is applied to the neck it snaps on in two stages. The lower skirt has a tear tab which, when pulled, fractures the lower skirt on a vertical line. Continued pulling on the tab sequentially fractures the bridges. Another neck has a neck stretch with multiple neck threads and a locking wall below the neck stretch with a plurality of external teeth.

Abstract: A closure for connection to a container with a threaded neck portion includes an upper wall with a lower surface and a skirt formed integrally with and extending generally downwardly from the upper wall. An internal helical thread is formed on an inner surface of the skirt for engaging the threaded neck portion to thereby secure the closure to the container. An inner annular seal extends generally axially downwardly from the upper wall to sealingly engage an inner surface of the neck portion. The inner annular seal has an inner seal apex area and a downwardly sloped surface extending generally downwardly and away from the upper wall to the inner seal apex area. A gas barrier seal has an annular sealing bead positioned between the inner seal apex area and the upper wall inner surface for sealingly engaging the inner surface of the neck portion. The downwardly sloped surface of the inner annular seal holds the annular sealing bead at least adjacent the lower surface of the upper wall.

Abstract: A snap-on plastic closure for a container includes a top wall portion, an annular skirt portion depending from the top wall portion, and a removal tab projecting forwardly from the skirt portion for manipulation of the closure during removal. A sealing plug depends from the inside surface of the top wall portion for disposition generally within the mouth of an associated container. The skirt portion of the closure includes a deformable region positioned beneath the removal tab so that during closure removal, the deformable region is permanently stretched and deformed for tamper-indication.

Abstract: There is described a neck structure in combination with a closure. The neck structure defines a neck opening with a cylindrical sealing surface surrounding the neck opening and an external neck surface. The closure comprises a cap formed of resilient material having a top and a downwardly extending skirt portion depending from the top. An annular plug depends from an underside of the top and one or more ribs are formed on an internal surface of the downwardly extending skirt portion. The annular plug and the one or more ribs are arranged concentrically and are dimensioned such that, upon application of the cap to the neck structure, the annular plug projects into the neck opening and engages the cylindrical sealing surface. At the same time the one or more ribs engage the external neck surface.

Abstract: The invention pertains to a method and apparatus allowing for gas flow into and/or out of a container assembly. The container assembly comprises a container having a sealing surface, and a cap having a sealing surface. The sealing surface of the container, the cap, or both is prepared by either being made of a coarse texture or polished so that the sealing surface of the container and the cap may cooperate with one another to form a seal, yet allow gas to flow into or out of the container assembly, as required.

Abstract: A closure for a container for holding contents therein generally comprises a surface for gripping the closure in order to twist it in either direction to open it. The closure has downwardly projecting teeth on its underside; the container has upwardly projecting teeth, which mate with the downwardly projecting teeth of the closure. An outer ring on the closure circumscribes and holds in place the upper lip of the container in the closed position. Twisting of the closure in either direction causes the closure to be released from the container.

Abstract: A cap for sealing a container having a threaded spout. The cap is arranged so that it can be snapped onto and off the spout and so that it can also be screwed on and off the spout.

Abstract: A closure for a fitment is provided with an outer side wall extending downwardly therefrom and spaced from an inner sealing ring wherein the outer side wall adjacent the top wall is provided with a plurality of spaced inwardly extending ribs, adapted for embedding into a lip at the outlet of a fitment neck.

Abstract: The neck of a container has a smooth seal surface engaged by the inner skirt or plug of a cap. Such surface is free of trim and parting line flaws which are characteristic of blow-molded jars because the surface is formed in such a way that the seal surface is not in contact with mold parting lines and further the trim (excess plastic) of the neck is located away from the sealing surface. In one form of the disclosure, above the sealing surface the neck wall slants outward and then bends upward-inward in a short, tapered stretch about 18.degree. to the horizontal which engages the underside of the cap disk to compress against the disk or a liner or foil. Other forms of seal surfaces are disclosed In another form of the invention, above the seal surface the neck extends outward and then upward and then inward in a flange which is trimmed along a line which has a circumference no less than the circumference of the seal surface.

Abstract: There are various ways to latch a closure onto a container. It has been found that for blowmolded containers that the support flange for the bottle preform can later be used as a part of the latch mechanism to secure a closure onto the container. Preforms have a support flange by which the preform is handled prior to being placed into the mold and in the mold. Prior to being placed in the mole, the preform is heated to about 85oC to about 200oC. During this time and in the mold, it will be supported by the support flange. This support flange is used after the container is blown and filled as one part of the latching mechanism of the closure. The closure will have a portion that is an interference fit with the support flange of the bottle to thereby secure the closure to the bottle.

Abstract: The present invention is a collection assembly comprising a container, a cap assembly removably and sealably secured to the container whereby access to the interior of the container can be made with a piercing element without removing the cap assembly from the container. The cap assembly includes a cap body and a membrane like septum supported by the cap body. The septum provides for a pierceable element to have access to the interior of the container. The membrane is a thermoplastic elastomer and is self-sealing upon removal of the piercing element.

Abstract: A vial pack cover, a vial pack kit, and a method for forming the vial pack cover is provided. The vial pack cover can simultaneously cover a plurality of containers while preventing the contents of the containers from degrading or permeating through the cover. In addition, the vial pack cover allows a user to access individual containers without having to remove the cover from the un-accessed containers. The vial pack cover generally includes: (1) a plurality of plug portions joined together and formed from a heat curable rubber; and (2) a barrier layer covering each of the plug portions.

Abstract: A closure system useful for storing fluids under cold storage conditions. The closure system includes cap and container components which combine to form a dual sealing system. The container has a generally cylindrical side wall, a closed bottom end, and an open top end having an inner beveled lip depending from an annular top rim. The cap has a generally circular top wall from which inner and outer skirts depend. The outer skirt is adapted to grip the open top end of the container. The inner skirt includes an outer surface having a lower seal bead and an upper beveled portion mated with the beveled lip. When the cap is fitted onto the container, the seal bead contacts an inner surface of the container and the upper beveled portion and the beveled lip are engaged in an interference fit, thereby impeding the loss of fluid from the closure system under cold storage conditions.

Abstract: The invention concerns a cap (1) comprising as assembly consisting of: a) a plastic insert (2) comprising a head (3) with closure means (31, 32) and a threaded skirt (4), and b) a metal wall. The invention is characterised in that: 1) said metal wall (5) covers all or part of the outer surface of said insert (2) and includes at least a metal skirt (51) for receiving said skirt (4) of said insert (2); said metal skirt (51) includes an edge (510) crimped to said insert (2) so as to assemble together said metal wall (5) and said insert (2); 3) said cap comprises means designed to provide weight and/or volume to the part of said cap located above said sealing closure means (31, 32).

Abstract: A closure for a container with a neck portion and an external helical thread formed on the neck portion includes an upper wall and a skirt formed integrally with and extending generally downwardly from the upper wall. An internal helical thread is formed on the skirt for engaging the external helical thread of the neck portion to thereby secure the closure to the container. The internal helical thread is preferably asymmetrical in cross section. A first annular seal extends generally radially inwardly toward a central axis of the closure from the inner skirt surface. The first annular seal sealingly engages the outer surface of the neck portion. A second annular seal extends generally axially downwardly from the upper wall and sealingly engage an inner surface of the neck portion. A thickness of the neck portion between the first and second annular seals is greater than the distance between the first and second annular seals before installation of the closure on the container.

Abstract: A nail care set of nail enamel remover and nail cream and a container kit having a main container body for keeping the nail enamel remover, an auxiliary cap container for keeping the nail cream, and a hollow lid to fit in the auxiliary cap container.

Abstract: A closure for a container with a neck portion and an external helical thread formed on the neck portion includes an upper wall and a skirt formed integrally with and extending generally downwardly from the upper wall. An internal helical thread is formed on the skirt for engaging the external helical thread of the neck portion to thereby secure the closure to the container. The internal helical thread is preferably asymmetrical in cross section. A first annular seal extends generally radially inwardly toward a central axis of the closure from the inner skirt surface. The first annular seal sealingly engages the outer surface of the neck portion. A second annular seal extends generally axially downwardly from the upper wall and sealingly engage an inner surface of the neck portion. A thickness of the neck portion between the first and second annular seals is greater than the distance between the first and second annular seals before installation of the closure on the container.

Abstract: The invention relates to a device for closing bottles containing a liquid under pressure, especially champagne or similar products, of the type comprising a cylindrical, hollow stopper having a longitudinal axis and a lateral surface, the stopper being designed to be inserted into the opening of a bottle neck and closed by a transversal surface having a projecting rim that rests on the annular end face of the neck; a closing cap having a peripheral portion that engages the annular outer edge of the neck; a seal engaged to an inner end of the closing cap and acting on the annular end face of the neck and on the transversal surface of the stopper.

Abstract: A container closure has a top panel wall, and an annular seal piece and an annular contact piece are integrally formed in an outer peripheral edge portion of an inner surface of the top panel wall. The annular seal piece is of such a shape as to be deflected radially outwardly upon contact with a cylindrical outer peripheral surface of a mouth-and-neck portion of a container. The annular contact piece is brought into contact with an annular boundary surface extending from an annular top surface to an annular outer peripheral surface of the mouth-and-neck portion arcuately in a sectional view. An annular thin-walled region positioned radially inwardly of the annular seal piece and the annular contact piece are further formed in the outer peripheral edge portion of the inner surface of the top panel wall.

Abstract: The invention relates to a dual sealing closure for use with an associated container having a neck. The closure comprises two sealing arrangements for forming a dual seal between the closure and the neck of the associated container. The first sealing arrangement forms a first seal with the neck of the container at a first contact point and a second sealing arrangement forms a second seal with the neck of the container at a second contact point.

Abstract: There are various ways to latch a closure onto a container. It has been found that for blowmolded containers that the support flange for the bottle preform can later be used as a part of the latch mechanism to secure a closure onto the container. Preforms have a support flange by which the preform is handled prior to being placed into the mold and in the mold. Prior to being placed in the mole, the preform is heated to about 85° C. to about 200° C. During this time and in the mold, it will be supported by the support flange. This support flange is used after the container is blown and filled as one part of the latching mechanism of the closure. The closure will have a portion that is an interference fit with the support flange of the bottle to thereby secure the closure to the bottle.

Abstract: A container (1) includes a body (2) and a cap (20). At least one elastically deformable portion (26, 27) of the cap has a set of beading (17, 18) capable of interacting with a snap-fit edge (6) provided on the neck. A first ramp (6, 16, 11) causes, in response to a rotational movement of the cap (20) with respect to the body (2), an axial displacement of the set of beading (17, 18) along the snap-fit edge (6) between a bottom position and a top position, and a second ramp (6, 16, 11) simultaneously causes the set of beading (17, 18) to part radially so as to allow the set of beading, when in the top position, to pass over the snap-fit edge (6) under the effect of an elastic return force exerted by the elastically deformable portion (26, 27).

Abstract: A resealable barrier closure is provided for a container with an open top and an annular snap ring below the open top. The closure includes a shell having an outer skirt dimensioned to telescope over the open top of the container. The outer skirt has a snap ring for engaging the snap ring on the container. The shell further includes an inner skirt to telescope into the open top of the container. An elastomeric diaphragm is sealingly engaged in the inner skirt. A barrier cup extends across the bottom face of the diaphragm and telescopes upwardly over the inner skirt. The barrier cup initially is sealed hermetically to the container and to the plastic shell. The container may be opened by urging the plastic shell upwardly with sufficient force to break the seal between the barrier cup and the container. The container then may be resealed by merely urging the closure back over the open top of the container.

Abstract: A closure system for molded plastic containers having a threaded container neck, the closure system comprising a screw cap having internal threading constructed for threaded engagement with the threaded container neck, a gasket, means for retaining the gasket on the screw cap and an abutment surface integrally formed in and extending substantially radially from the container neck for sealably contacting the gasket, wherein the screw cap and the abutment surface are constructed so that downward axial rotation of the screw cap is effective to seal the gasket against the abutment surface.

Abstract: The problem to be solved by the invention consists in the provision of a one-piece plastic enclosure, in particular made of PE-material, which can be placed on a filled container without satisfying particular tolerance requirements while simultaneously satisfying the additional, in part contradictory requirements, namely, to be manufactured in a few steps and to be apt for recycling after use, while ensuring reliably the guarantee function and the sealing function, for the closed container. The solution consists in a closure cap which has an extended guarantee band and an extended inner seal, i.e.