Abstract: A bottle closure cap stampable from sheet metal as a shallow cylindrical inverted dish having a rounded juncture forming a fillet between its crown and its cylindrical wall; a layer of elastomeric material being disposed in the fillet and engageable with the axial end of the bottle when the cap is attached. A generally radially extending rip tab is integral with the cylindrical wall at the bottom edge thereof and is adapted to tear through the cylindrical wall by a generally circumferential pull of the user to gain access to the container. A rip line is provided commencing at a corner defined by the bottom edge of the cylindrical wall where it meets the rip tab. The rip line extends at a shallow angle across the cylindrical wall to a level which is spaced below the crown, continuing parallel to the crown circumferentially about half-way around the closure cap.

Abstract: A closure device, which may serve as a bottle closure or as a sink plug, or may constitute a container such as for an air-freshener material, comprises a base and a lid, formed by a resiliently deformable disc, centrally resiliently mounted on a bridge spanning the base and capable of flexing reversibly between two stable dished conditions, respectively an externally convex closed form and an externally concave open form.

Abstract: A pharmaceutical vial and cap assembly of the kind comprising an open-top vial covered by a cap with a depending peripheral skirt, the inner surface of the cap skirt and the outer surface of the vial having complementary mating interlock elements that preclude manual removal of the cap, the cap including an integral tear member, defined by one or more weakened junction lines, such that pulling away the tear member allows ready manual removal of the cap; the cap top includes a fill hole that for filling the vial with the cap in place, and the fill hole is closed, after filling, by a resilient stopper having a configuration effectively precluding manual removal, so that post-filling tampering and contamination are precluded. The stopper is preferably molded together with the cap, being connected to the cap by an integral strap.

Abstract: A container closure which has a cap part with an internal screw thread to engage with an external screw thread on the container, a tear away band connected to the skirt of the cap part to show whether the closure has been tampered with and a captive band connected to the tear away band.

Abstract: A closure and sealing device for closing and sealing an open-mouthed vessel having a vessel neck and further having an orifice defined by a vessel neck lip protruding axially and radially from said orifice. A bottle cap in accordance with the preferred embodiment is designed to prevent the transfer of liquid or gas between the interior of the bottle and the atmosphere and includes two elongated, tapered sealing members disposed around the interior perimeter of the cap with the sealing members angularly disposed such that they diverge from each other. The tapered ends of the elongated sealing members are adapted to make firm contact against the top and side of the lip. Seal augmenting means consisting of a relatively massive protruding region disposed around the interior perimeter of the cap below the sealing members are adapted to urge the sealing members into sealing contact with the lip and acts as a third sealing member.

Abstract: A sterile pack comprising, in combination, a moulded plastics container (1) to which is attached a moulded plastics cap (20), the container being integrally sealed at its upper end, the neck of the container being provided with thread (3), an annular portion (10) of the neck above the thread being frangible, and the cap having a thread complementary with the container thread and means for contacting the container above the said annular portion, is characterized in that the thread (3) has a pitch of between 0.05 and 0.095 turns per millimeter per millimeter of thread diameter, and that the diameter of the frangible portion (10) of the container is at most 80% of the thread diameter.

Abstract: A capping capsule with a thin wall comprising a tearable guarantee strip connected to the skirt of said capsule by means of two rupture lines of reduced thickness. The tearable guarantee strip is provided with vertical ribs spaced from each other, the thickness of which rapidly decreases to reach zero at the edges of said strip defining the crimping lines.

Abstract: A snap-on closure for use with a bottle having a neck and a mouth defining an opening in communication with the interior of the bottle, includes a circular top wall which contacts the uppermost surface portion of the bottle mouth. A first annular sealing wall, extending centrally downwardly from the top wall, engages and seals an inner surface portion of the bottle mouth. A second annular sealing wall also extending centrally downwardly from the top wall is spaced radially outwardly from the first annular sealing wall and engages and seals an outer surface portion of the bottle mouth. An outer wall, connected to the periphery of the top wall by a thin web membrane to permit easy separation from the top wall, extends downwardly from the periphery of the top wall a greater length than the second annular sealing wall. The outer wall has a flange extending radially outwardly from and along a major portion of its lower edge.

Abstract: A tamper proof lid which includes a crown having means for interlocking with a container neck finish. The crown has a depending skirt which incorporates a frangible portion and there is a handle which is secured to the frangible skirt portion generally as a continuation thereof and disposed radially outwardly of the adjacent part of the skirt. There is a rupturable webbing extending between the handle and the skirt which, when broken, indicates that the lid has been tampered with. The interlock between the crown and a container neck finish is sufficient to retain the crown in place under all conditions. The depending skirt initially provides for a hermetic seal. The lid is preferably formed of a relatively rigid material, such as polypropylene, which makes it virtually impossible to remove the crown from an associated container neck finish. The handle, once it initiates rupture of the skirt, is required to effect an upward prying and peeling of the crown from the associated container neck finish.

Abstract: A tear-off closure having a collar flaring downwardly and outwardly from a terminal edge of a cap portion of the closure, the collar provided to shield a portion of a bottle with the closure applied thereon from contamination. At least one line of weakening is provided in the collar to enable tearing at least the collar for convenient removal of the closure from a bottle.

Abstract: A container closure for sterilely packing fluids and provided with a neck and a cap lockable thereon, consisting of a cover portion and a skirt portion which are connectible through a single snap closure and in the non-connected condition are surrounded by a protective cap which prevents undesirable connection of cover and skirt portion and receiving sealingly relatively to the surroundings the cap attached on the container for ensuring the interior sterility of the container preceding the sterile filling of said container. The protective cap may be designed in such a way that it constitutes a cap sealing after the filling of the container.

Abstract: A re-closable tamper-proof closure assembly for containers comprises a cap with a tamper-proof strip attached to the skirt of the cap by a breakable web but the strip is free of any tabs graspable by the user's hand, and is broken away from the cap simply by the act of removing the cap by pushing upwards on a stout lug. There may be a gap in the web already in the region of the lug, and at the opposite side of the cap the skirt is extended downwards to form a tongue between the ends of the strip. There can be a bead on the container neck for snap engagement of the cap on re-use, in addition to the bead engaged by the tamper-proof strip.

Abstract: A closure is provided for a container such as a flexible bag for I.V. liquids which is easily removed therefrom with a minimum amount of force. The easily-removable cap structure affords a sterile closure system, yet at the same time is susceptible of different geometric configurations which concentrate pulling forces in a confined area and in conjunction with a pre-weakened tear line so that a force not exceeding more than about 12 pounds will initiate a tearing away of the cap structure so as to expose the port and the contents of the container.

Abstract: A tamper indicating closure for use in combination with a container for spirits or liquors having a retaining means thereon, said closure having a crown with a plug portion dependent therefrom and adapted to engage the interior surface of the neck of the container, a skirt comprising a side wall, tear-away portion, and tamper indicating portions, depending from said crown and adapted to engage the external surface of said container wherein the tamper indicating portion is adapted to fit over said retaining means so as to be substantially unremovable therefrom when the closure is fully placed on the container, said closure only being removable by first removing the tear-away portion with the tamper indicating portion remaining on the container so as to indicate tampering to the consumer.

Abstract: A child-resistant closure includes a tamper-proof band which engages an associated container finish, and which must be separated from the remainder of the closure for removal of the closure from the finish. A pull tab and weakening grooves are provided to permit manual separation of the tamper-proof band from the remainder of the closure. A resilient shield integrally formed with the tamper-proof band overlies the pull tab and normally prevents grasping thereof. Removal of the closure is possible only when the shield is manually deflected and held in position while the pull tab is grasped and the tamper-proof band torn away from the remainder of the closure.

Abstract: A child-resistant, tamper indicating package includes a container having a body portion with a tubular neck and a closure for the neck which is removable and reclosable. The container has a shoulder at the juncture of the body and the neck and the neck has a radially outwardly extending annular rib spaced from the shoulder. The rib has opposed upper and lower converging surfaces such that the included angle at which the lower surface intersects the tubular neck is greater than the included angle at which the upper surface intersects the tubular neck. The closure has a disc-shaped top and a flexible annular skirt the lower edge of which is formed with an inwardly directed flange. The inside diameter of the flange is less than the outside diameter of the rib on the neck so that the flange engages the upper surface of the rib to flex the skirt radially outwardly during downward movement of the closure on the neck until the flange snaps beneath the neck rib to hold the closure in sealing engagement with the neck.

Abstract: A one-piece container closure having special utility for use with pressurized containers, such as champagne bottles, is disclosed. The closure includes a shank and a top, attached to the upper end of the shank, which combine to seal the bottle. A pleated, resilient skirt depends from the top and surrounds the ring on the neck of the bottle. A plurality of retaining shoulders extend inwardly from the skirt to engage a lower surface on the ring. The retaining shoulders have an upwardly and inwardly inclined surface so that when capping the bottle, the inclined surface rides against the ring on the bottle. A tear strip attached along the lower edge of the skirt inhibits the radial expansion of the lower edge of the skirt. As the retaining shoulders of the cap are forced over the ring, the upper portion of the shoulders pivot outwardly. After clearing the ring, the resilient skirt pivots the shoulders under the ring. To remove the cap from the bottle, the tear strip is torn away.

Abstract: A tamper proof lid which includes an end panel and a depending annular body having means for interlocking with a container neck finish. The annular body has a lower skirt which incorporates a frangible portion. A handle is secured to the frangible skirt portion and a rupturable webbing extends between the handle and the skirt thereby limiting movement of the handle.

Abstract: The invention relates to a closure means for instance seated on a bottle and hermetically sealing it. The closure means preferably is shaped like a cap comprising at least one slitting by means of which the side wall of the cap spreads when being set. The cap furthermore comprises an inside annular bead and a sealing collar for hermetically sealing the cap onto the bottle. The cap further comprises a lift-off element for easy reopening and at least one tear-off tensioning member spanning the slitting so as to counteract spreading and acting as a warranty signet.

Abstract: A container-closure assembly comprising a container having a body portion and an elongated externally threaded neck at one end having a discharge opening normally closed by a membrane, a locking collar at the juncture of the neck and body portion projecting radially beyond the circumferential trace of the threads of the neck of the container and a closure adapted to be mounted over the discharge end of the container comprising a cap portion of generally cup-like form having internal threads and a piercing element projecting from the inside face of the top of the container and a skirt of a larger diameter than the cap connected to the lower edge of the cap by fracturable bridge means and locking means at the lower terminal edge of the skirt cooperating with the locking collar to prevent removal of the closure from the container.

Abstract: A tamperproof push-on type integral synthetic plastic closure cap for an externally beaded container neck, the cap comprising a body having a depending side wall, a rim on the lower end of the wall having an inwardly projecting locking rib adapted to coact with a bead on the container neck, a circumferential weakened region in the wall disposed above the rim, and a tab projecting outwardly from the rim, the wall having a slotted region adjacent the inner end of the tab and there being a weakened connecting region formed by a notch between the rim and the inner corner of the tab so that twisting the tab will break the rim at the notched region and enable the rim to be detached from the side wall along the circumferential region by outward pull on the tab.

Abstract: A tear open bottle cap comprises a top planar disk 2, a cylindrical skirt 1 depending downwardly therefrom, a slant score line 9 extending upwardly from the lower edge of the skirt, a pull tab 7 projecting downwardly from the lower edge of the skirt at the score line, and an inner bead 4 extending around the circumference of the skirt and spaced from the lower end thereof to engage an upper bead of the bottle neck. The score line crosses the inner bead and has severable transverse partition walls 21, 22. A plurality of vertical, radially inwardly directed lugs 6 project from the corner 3 between the disk and skirt and have slant lower edges 11 for engaging the upper bead of the bottle neck. A circumferential internal rib 5 on the disk abuts the upper edge of the bottle neck to act as a shock absorber, together with the lugs 6.

Abstract: The invention contemplates a formed-metal sealing cap especially adapted for removable closure of a bottle or the like container having contents under internal pressure. A circumferential pleat of the cap skirt forms the bottom rim of the upper reusable portion of the cap, and the lower portion of the cap is severably but integrally connected to the pleated region of the upper portion. In the forms described, the severable connection is via a tear-off strip of cap material which is circumferentially united to the upper reusable cap portion on a circumferentially extending locally weakened alignment, and the weakened alignment is enveloped by the pleated region. Thread-on and clinch-type cap-to-bottle embodiments are described.

Abstract: The invention provides an improved plastic snap cap with a tamper proof band for sealing wide mouthed plastic containers that have an outwardly protruding, continuous, circumferential bead near the top of the container rim. The cap panel has a depending sealing plug for forming a seal on the inside surface of the container. The inside of the closure skirt has a dual function groove formed to provide a frangible circumferential line and to receive the protruding bead when the cap is snapped into position on the container. The portion of the skirt below the groove serves as a tamper proof tear strip, and normally prevents removal of the closure. The groove on the inside of the closure skirt does not extend around the entire inner circumference of the skirt, but leaves a small section of the skirt with no groove or recess to receive the protruding bead. Therefore, when the cap is in place on the container, the protruding bead causes this section of the skirt to bulge slightly outward.

Abstract: An opening device is taught for packages comprising a substantially rigid outer wall portion and an inner layer of substantially gas-tight material (preferably a metallic foil), wherein the outer wall portion includes a first tearing notch defining an opening and a second tearing notch defining a grip tongue. The outer wall and the inner wall being interconnected substantially over their total surfaces facing each other with said outer wall portion and said inner layer being separated within an area substantially under said grip tongue. Preferably, the grip tongue is located completely within the opening defined by said first tearing notch.

Abstract: A tamper-proof closure cap for use with the externally threaded neck opening of a container for providing a visible indication of tampering attempts with the container includes a generally cylindrical main body portion which is internally threaded and suitable for mating engagement with the externally threaded neck opening. Extending around the lower edge of the main body portion and for approximately 150.degree. is a removable sector ring which is joined to the main body portion by three evenly spaced-apart connecting elements. Located adjacent to the externally threaded neck opening is an interlock protuberance which includes an inclined lower surface and the top surface of the removable sector ring has a compatible sawtooth profile. The teeth of the sawtooth profile ratchetly engage the inclined surface of the interlock protuberance.

Abstract: A container (1) is provided with a cover (2) which has a guarantee strip (4) which can be divided along a design tearing line. In this arrangement, the guarantee strip (4) engages under a holding bead (9) and at the same time is protected from unauthorized manipulation of the guarantee strip, by a protective bead (10). So that the container which is produced by an injection moulding process can be produced by means of axially openable moulding tools, the holding bead and the protective bead are interrupted in such a way, and are arranged offset relative to each other in gaps, in such a way, that the respective holding bead (9) only extends, on the outside wall of the container, over the length over which the protective bead (10) is interrupted. In this way there is no undercut configuration at any point, which would prevent axial retraction of the moulding tools or axial ejection of the container.

Abstract: A tamperproof press-on, snap cap for closing a container having a neck defining the mouth opening. The container has an upper cap retaining bead and lower, enlarged annular ledge. The snap cap includes an enlarged end wall and a downwardly depending skirt inwardly of the end wall periphery which has an inwardly directed radial annular bead for cap retaining engagement with the container bead. A cylindrical tear sleeve depends downwardly from the peripheral edge of the end wall of the cap, is spaced radially outwardly from the skirt, is longer than the skirt and sized for encircling and snugly engaging the annular ledge. The tear sleeve has a peripherally weakened annular tear zone at the cap end wall juncture and includes an axial tear groove extending from the weakened tear zone to the lowered edge of the sleeve. Adjacent the tear groove is shortened section to enable grasping and tearing the sleeve.

Abstract: A closure member is provided for closing a container opening wherein the closure member includes a central closure panel, a circumferential rim, and a circumferential edge flange having a circumferential line of weakness about which the edge flange can be folded to abut the outer surface of the container.

Abstract: Improvements in inner and outer closures for containers are disclosed. The outer closure is characterized by a cap member having a top wall, a side wall and a base adapted for sealing to the neck of a container. Two score lines extend across the top wall with finger gripping means attached at the apex where the two score lines meet. One score line extends down the side wall to connect with a third score line near the base which extends completely around the cap. The other score line extends down the side wall to an intermediate position and diverges away and terminates a short distance from the one score line. By pulling on the finger gripping means, the entire cap member above the third score line is removed in one piece. The inner closure comprises a plastic member sealed at its periphery to the mouth of the neck and includes a vertically aligned spike-entry port and an additive port which is oriented at an angle away from the entry port.

Abstract: A closure cap with the lower portion thereof being sealed to the container and an upper portion being separated from the lower portion by a tear strip. A handle extends outwardly from the tear strip and is formed integrally with the tear strip. An angled gusset bridges the handle and the tear strip to extend the fulcrum point of the handle into the tear strip tear direction thereby providing relatively greater leverage.

Abstract: A bottle cap which reliably seals a bottle at high and low temperatures and which nevertheless can easily be removed by hand without a tool. The cap is made of two parts: An outer cap member of hard plastic material and a sealing insert of soft plastic material. In the closed position the outer cap member is fixed against the inner sealing member by means of a detachable opening ring, which firmly holds the sealing insert clinging to the bottle opening.

Abstract: A molded plastic container and closure assembly comprises a container having an upstanding wall adapted to be embraced by the depending skirt of a closure member. To resist tampering or unauthorized removal of the closure, the container has an integrally molded wall means projecting radially outwardly therefrom forming a channel to receive the lower end of the depending skirt. Annular beads formed on the interior wall of the depending skirt cooperate with a bead formed at the free edge of the container opening and with a relatively smooth outer skirt surface to restrict closure removal until the aforementioned wall means are torn away from the container. To facilitate such tearing, the wall means are provided with finger-engageable means and with suitably located weakenings to enable a tearing removal of the wall means by manual gripping and pulling of the finger-engageable means.

Abstract: A drum closure assembly which includes a ring member and a cover member, the cover member being cooperatively sized for insertion into the ring member. The ring member comprises outer and inner ring portions which are angularly displaced from parallel to one another. The cover member includes a top cover member and an annular wall member designed to abut the inner ring portion of the ring member and to seal the assembly when in use.

Abstract: Described herein are sterile vessels, as for pharmaceutical use, wherein there is disposed about a primary closure partially protuberant from the vessel a secondary closure resistive of non-destructive disengagement. The secondary closure, which is preferably heat shrunk about the vessel neck and primary closure, is provided with an attenuated fracture zone to facilitate opening. The invention finds application, e.g. in multicompartment mixing vials wherein the primary closure serves as a piston plug which, when activated, unseats a divider plug separating compartments containing medicaments or the like which are accordingly permitted to mix.

Abstract: A two piece pourer closure, comprising a base portion with a cover portion which on rotation is raised by cooperating protuberances to open a pouring aperture, is provided with a separable guarantee strip, at least partly covering the cover portion to prevent it from being grasped and rotated and with means for centering and supporting a jacket portion of the cover against laterally acting forces. The means for supporting the jacket portion may be the protuberances on the base portion or a ring of guide elements on the base portion engaging the inner surface of the jacket portion.

Abstract: A blow molded or injection molded plastic container has a neck formed with a substantially horizontal flat top, an internal substantially vertical first sealing surface, a groove, a very smooth second sealing surface of less diameter than the first sealing surface and a lower groove and then a vertical stretch which merges into a breast which widens out to the full size of the container, an external first vertical surface, a horizontal inwardly extending soulder, an indented second vertical surface of lesser diameter than the first vertical surface and an external bead, and a third vertical surface at about the level of the vertical stretch. The second sealing surface has an "injection finish" obtained by use of a blow pin in the mold. The cap has upper and lower internal beads (which seat under the shoulder and external bead of the neck) interrupted in a plurality of gaps, permitting stretching of the cap to seat on the neck.

Abstract: A plastic container neck has an inside substantially vertical sealing surface, a top groove, a very smooth second sealing surface of less diameter than the first sealing surface, a lower groove and a vertical stretch. The outside of the neck has a vertical surface, a horizontal, inwardly-extending shoulder, an indented second vertical surface of lesser diameter than the first vertical surface and an external bead, and a third vertical surface. The container has a substantially uniform wall thickness. The second sealing surface has an "injection finish" obtained by use of a blow pin in the mold. The cap has lower internal beads interrupted in a plurality of gaps, permitting stretching of the cap to seat on the neck. Thickenings on the interior of the cap outer skirt paralleling the spiral groove of the skirt from the bottom edge of the skirt to the horizontal groove to facilitate tearing the skirt.

Abstract: A closure assembly for a glass canning jar has an internally threaded skirt portion and a transverse lid portion having a rim section separated from a center section by a continuous weakened region in the form of a surface groove. A manual pull member is mounted on the center section. The transverse lid portion may be integral with the skirt or may comprise a separate member.

Abstract: A container with a closure, the container and closure being engageable by relative rotation, locking means on the container and closure which allow the closure to be rotated in the direction required to apply the closure but not in the opposite sense, the locking means on one of the container and closure being formed as a tear band so as to unlock the pair of locking means and allow removal and replacement of the closure.

Abstract: A hinged closure has a cap part and an integral band adapted to be separated circumferentially from one another except for a narrow interconnecting hinge by removing a partial arcuate tear band between the cap part and the anchor band and then applying upward pressure upon the cap part so as to tear two remaining arcuate membranes which connect the tear band with the hinge.

Abstract: A metal cap for crimping on the neck of a container has one or two tear lines of reduced strength about its skirt which define a tear-off strip. A perforation for initiating tearing extends across the width of the strip and at least one smaller perforation is also provided in the strip. A tear-off tab (plastic tape) engages both sides of the strip and is joined together through the perforations. The larger perforation is either U- or L-shaped, a straight slot or variations thereof. The portion of the tear line adjacent the larger perforation may be scored to facilitate initial rupture in the desired direction. One or more circumferential reinforcing ribs may be provided in the skirt on one or both sides of the tear-off strip. In addition to the full circumferential tear line, a partial tear line may extend between the larger perforation and a slot in the edge of the cap to provide an initially narrow tear-off strip, which enlarges to include the edge of the cap.

Abstract: A reclosable container assembly is disclosed comprising a container body having an open end and a cover for closing the open end. The cover has a wall portion extending into the open end of the container body and interengaging therewith to provide a snap-fit therebetween. The cover has a peripheral flange including a portion extending radially outwardly across the open end of the container body and terminating in a peripheral skirt. The underside of the radially extending flange portion is provided with a peripherally continuous V-shaped recess providing a line of weakness along which the material of the cover fractures and tears in response to an attempt to displace the cover flange in the direction to separate the cover from the container body. The material along the line of weakness fractures in response to a displacement force less than that required to disengage the snap-fit between the container body and cover, and provides a visual indication that the container assembly has been tampered with.

Abstract: A tamperproof container and cap assembly in which the container carries a circumferential radially extending flange which cooperates with the skirt of the cap to prevent the cap from being removed until a portion of the cap skirt is removed. The cap skirt comprises an upper portion and a lower portion, with the lower portion forming a tear-off strip that is connected to the upper portion by means of vertically oriented stacking ribs. The ribs are dimensioned so as to allow a plurality of caps to be stacked upon one another. The lower portion of the skirt defines an opening which enables an operator to insert a tool therein and then to tear the lower portion away from the upper portion.

Abstract: The cap of the present invention has a top disk which fits on the end of the neck of a bottle and a thin-walled outer skirt formed with a pair of circumferential beads which fit against mating portions of the bottle neck. A pair of parallel, circumferential internal score lines, defining a weakened cylindrical band, are formed in the outer skirt between the circumferential beads and in proximity to an integral tear tab. By pulling on the tab, the band is torn out of the outer skirt, permitting the upper portion of the cap above the band to be pulled off the neck. This upper portion can be replaced for reclosure purposes. Preferably, the cap is formed with an integral, smaller diameter "corking" skirt which fits inside the bottle neck.

Abstract: A plastic water-tight cap for a water bottle that has a tearable portion that permits the reuse of the cap having a tab portion depending from a skirt portion, score lines alongside the tab portion and extending about the skirt portion and a pair of reinforcement members extending along the skirt portion whereby upon pulling upwardly on the tab portion, the latter and a part of the skirt portion are severed from the cap leaving the skirt portion at the position of the reinforcement members as a tab that permits the reuse of the cap for resealing the water bottle.

Abstract: An originality seal for disposable or single use receptacles adapted to be fitted to an applicator having a peripheral sealing surface for connection to the disposable receptacles consisting of a receptacle-side sealing surface for engaging the wall of the disposable receptacle. The seal includes a resilient sealing ring surrounding the sealing surface, the ring having at least two sealing lips, one of the lips cooperating sealingly with the peripheral sealing surface of the applicator when the disposable receptacle is fitted thereto and the second sealing lip cooperating sealingly with the receptacle side sealing surface. There is also frangible webs coupling the resilient sealing rings to the receptacle-side sealing surface so that the frangible webs will rupture by the force of engagement of the disposable receptacle to the applicator.

Abstract: A tamperproof container and cap assembly in which the container carries a circumferential radially extending flange which cooperates with the skirt of the cap to prevent the cap from being removed until a portion of the cap skirt is removed. The cap skirt has a circumferential frangible section formed by an internal groove. A pair of spaced lugs are carried by the skirt and a frangible membrane couples the spaced lugs to the frangible section and to each other. The lugs are spaced a sufficient distance to permit the insertion of a tool which may be operated to force the lugs apart thereby breaking the frangible membrane, with one of the lugs forming a pull tab. The pull tab is operative when pulled to cause removal of a portion of the cap skirt, thereby allowing access to the cap for removal.

Abstract: A container made from a foil or laminate material and provided with a cover which is sealed to a flange of the container by the application of heat. In order to facilitate removal of the cover, all or all but one of the corners of the container have cuts or kerfs extending from the outer edge up to the welded bead. To open the container, the tab defined by each kerf is grasped and pulled upwardly so that the adjacent strip of cover and flange is removed by tearing along one straight side of the polygonal container. The procedure is repeated at successive sides until all or all but one of the edge strips have been removed.

Abstract: A security closure for a container, comprises a capsule, and a stopper including a tearstrip having a free end which in use passes through an opening in the capsule, the opening having a width greater than its height. The capsule has two lines of weakness which are aligned with the longitudinal edges of the tearstrip.