Abstract: A sealing element for sealing a container includes a cap having a top with an opening therein in combination with a septum. The septum includes an elastomer in direct physical contact with an interior surface of the cap. The septum occludes the opening in the top. There is no layer of adhesive or plastic material between the elastomer and the interior surface of the cap. The cap may be made of plastic or metal. Also provided is a method of directly bonding an elastomer, such as silicone rubber, to a plastic or metal.

Abstract: A composite closure for a container has a moulded plastics band (24) closed at one end by a plastics sure disc (72) which is held captive within a recess formed around the band interior. Also on the band interior is a screw thread (44) by which the closure may attached to a container neck (12). The disc is cut from flat plastics sheet and is initially plane. However, when the closure is fitted to the container a marginal edge region 78 surrounding the container neck is deformed downwardly to generally frustoconical form.

Abstract: A bottle cap is provided that allows for venting of gases generated in a bottle. A single or multiple ridges are formed on the inner surface of the cap top such that the ridges sit on the bottle mouth rim when the cap is threaded onto the bottle. A single or multiple slots may be formed across each of the ridges. Alternatively, a single or multiple grooves may be formed on the inner surface of the cap top. The ridge(s) or groove(s) may also be formed on a disc fitted over the inner surface of the cap top. When the cap is threaded on to the bottle, gases generated in the bottle can escape through the slot(s) formed across the ridge(s) or through the groove(s) formed on the inner surface of the cap top. A liner having an opening formed through its thickness may be placed in the cap. The liner opening allows the passage of gases from the bottle to the slot(s) or groove(s) formed on the cap top or disc.

Abstract: A composite closure for a container having carbonated contents includes an outer closure cap having a top wall portion, and an annular depending skirt portion. A disc-shaped sealing liner is positioned within the closure cap adjacent the inside surface of the top wall portion. The liner includes an inwardly facing sealing portion at the periphery thereof, and further includes an annular seal bead which projects downwardly from the liner in a direction away from the top wall portion. The closure is configured for enhanced sealing with an associated container, with the top wall portion of the outer closure cap preferably including a relatively thick, peripheral reinforcing region which overlies the annular seal bead of the liner for further enhancing sealing.

Abstract: A closure and container system for storing prescription or over-the-counter medications is disclosed that is reversible between child-resistant and non-child resistant modes of use. The system includes a pair of endless beads, one on each of the container neck and closure, to improve moisture-barrier protection.

Abstract: The present invention comprises a two-piece induction seal for use in creating clean, safe, and secure inner seals on containers, comprising layers of synthetic foam, absorbing synthetic polymer, an induction membrane and a heat-sensitive seal.

Abstract: The present invention relates to closure systems (10) for a container for pourable material in particular for pourable material for human consumption such as beverages. The closure system (10) comprises a closure frame (20) and a sealing means (30) which is removably joined to the closure frame to provide appropriate sealing of the container. The present invention allows to reuse the closure frame and provides a temper proof indication.

Abstract: A container for liquid medical specimens such as urine specimens includes a container with a wide mouth opening for facilitating deposition of a urine sample, a removable cap for closing the mouth opening and an impermeable sheet liner under the cap for making a fluid tight seal with the rim. The liner is rupturable with the blunt tip of a laboratory pipette inserted through a small hole in the cap for drawing a sample of a urine specimen without removing the cap of the container. The hole in the cap may remain open after collection of a urine specimen in the container, as leakage is prevented by the liner. Alternatively, a small secondary cap may close the hole in the main cap. An optional decanter may be inserted through the hole in the cap for piercing the liner to facilitate pouring of the contents without removing the cap. A method of using the novel container for conveying a liquid medical specimen from a specimen collection site to a geographically removed laboratory site is disclosed.

Abstract: A self-resealing container cap configured to make a closing engagement with a container and a septum of elastomeric material supported in an opening defined by the cap periphery. The septum is puncturable by a blunt tip of an instrument such as a disposable plastic pipetter tip or a single use plastic laboratory transfer pipette having a tip width substantially greater than the thickness of a central portion of the septum. The septum is further configured to be substantially self-resealing against significant leakage of specimen liquid through the septum following withdrawal of the blunt tip from the punctured septum.

Abstract: A method of converting on a single line printing press, two webs of material into individual rolls of ribbons of dual-layered, peelably-bonded-together lids. One layer of each lid has dispensing holes formed therein, or otherwise is cut through to form plugs, and the other layer of each label is printed with selected indicia and/or logos. The resultant product is wound in multiple layers of ribbons, or so-called, "daisy chains" of dual-layered lids around cardboard cores ready for shipment to processors of food particles, such as salt or cheese, to be secured as individual covers on cup-like containers.

Abstract: A safety closure including a top wall having a first diameter, an outer cylindrical shell depending downwardly from the top wall first diameter, an inner cylindrical shell depending downwardly from a second diameter of the top wall, and a retaining flange projecting inwardly and downwardly from a lower edge of said inner shell opposite said top wall. The inner shell second diameter is less than the top wall outer diameter, and the inner shell is coaxial with the outer shell. The retaining flange is engageable with an underside surface of a locking bead provided on an external surface of the container neck, thereby maintaining a constant downwardly-directed axial force being imposed on the safety closure, which results in a constant upwardly-directed radial force being imposed on the sealing gasket by an upper terminal lip of the container neck.

Abstract: A plastic closure and method of making such a closure for a container that has a finish with a top surface portion, a cylindrical outer surface portion, and a curved portion at the juncture of the top surface portion and the outer surface portion. The closure includes a base wall, a peripheral skirt having an inner surface and threads on the inner surface of the skirt for engaging the container. The base wall has an inner planar surface and a compression molded liner is compression molded and bonded on the planar surface of the plastic closure. The peripheral portion of the liner has an outer annular inclined surface. The inclined surface tapers radially inwardly away from the base wall of the closure and is positioned for engaging the top surface portion of the finish and the inner surface of the container and is out of engagement with the outer surface of the finish of the container.

Abstract: A packing for a lid to seal a container opening is provided comprising a packing body, including a packing material and a low gas permeable sheet laminated on a surface of the packing material adapted to face a container, a gas permeable sheet provided on a surface of the packing body adapted to face the container and an oxygen absorbing agent provided between the packing material and the gas permeable sheet, adjacent the gas permeable sheet.

Abstract: A liner for use with a threaded closure cap is formed of a relatively thin, flexible material having a central portion configured for placement in the cap abutting a top wall thereof. The liner has at least one tab extending therefrom. The tab has a leading edge portion that is formed so as to define an angle relative to a tangent line adjacent to a juncture of the tab and the central portion. The angle of the tab is configured to be the same as the angle of the threads in the closure cap so that the tab rests fully against the threads prior to application of the closure to an associated container.

Abstract: A child resistant package including a container having a base wall, side wall and opened end and a plurality of projections on the side wall having downwardly extending notches. A plastic closure has a base wall and a peripheral skirt and a plurality of lugs on the inner surface of the skirt for engaging the notches by relative rotation between the closure and the container. A plastic insert is interposed between the closure and the open end of the container and is normally retained by the closure before it is applied or reapplied to the container. The plastic insert has a central portion engaging the base wall of the closure, a peripheral portion engaging the open end of the container and an intermediate portion defining a spring between the central portion and the peripheral portion. Retaining beads on the closure retain the liner in position when the closure is removed. The liner may be sealed to the container as by induction sealing to seal the contents when the container is filled.

Abstract: A pull-top closure for a container and a method of using the container incorporating the closure. The container is of the type commonly used for motor oil. It includes a main body having a top wall, a spout projecting upwardly from the top wall adjacent to one side of the body and terminating in a mouth. The top wall slopes from the spout to an upper corner on the opposite side of the body from the spout. The closure includes a seal releasably sealed to the mouth of the spout, a stem connected to the seal on the opposite side thereof from the upper corner and doubled back over the seal so as to extend toward the upper corner, and a ring connected to the stem so that the ring can be extended over the top wall between the spout and the upper corner.

Abstract: A seal system is provided for a container that includes a cap. The system provides a seal between the inside surface of the cap and the rim of the container as well as an exposed foil seal on the rim of the container. Removal of the cap from the container results in a cleavage of the seal system between the foil layer that is heat sealed to the rim and the backing structure leaving an exposed upper foil surface and the backing structure which remains attached to the inside surface of the cap. After the foil seal is removed by the consumer, the backing structure disposed on the inside surface of the cap provides a gasket-type seal between the cap and the rim of the container.

Abstract: By employing an award determining prize member incorporating a lens constructed to cooperate with printed indicia which produces a minimum of two separate and distinct visual images, depending upon the angle at which images are viewed, a unique and highly valued prize member is created, as well as prize award members which are incapable of having prize related information observed by the consumer prior to purchasing the item. In the present invention, the visual image representing the prize award information is quickly and easily mounted to the inside surface of a cap and is constructed with at least one image thereof being visible only when viewed at an angle which is substantially perpendicular to the surface of the indicia. In this way, advance determination of winning prize members by consumers prior to opening and removing the cap from the container is eliminated.

Abstract: A tamper-indicating closure for a container includes a cap with removable panels of a top wall of the cap. Each removable panel is connected to a tab on the inside of the cap. The top wall includes inner and outer cams on an inside surface and the tabs underlie the cams. A liner disc is applied inside the cap for sealing against the container. A plurality of spaced-apart ratchet teeth are arranged in one or two circular patterns on the liner disc and sized and located such that the circular pattern of teeth meshes with the two cams. The tabs have a toothed transverse cross-section which allow the tabs to ride over the ratchet teeth in a screwing-on direction to the cap, but the tabs are engaged by the ratchet teeth in a screwing-off direction of rotation of the cap. Since the liner disc and ratchet teeth are stationary with respect to the container, unscrewing of the cap causes the ratchet teeth to separate the panels from the moving cap.

Abstract: An innerseal is provided for sealing against the lip of a container opening under a cap. The innerseal includes a resiliently-compressible porous synthetic backing layer which fits within the cap, a foil layer, and a wax layer which initially holds the foil and backing layers together. Preferably, a heat-activatable adhesive layer is disposed against the foil layer. The cap is tightened so that the foil layer is pressed against the lip of the container opening. Then, heat is applied to melt the wax and to activate the adhesive layer. This molten wax is absorbed into the synthetic backing layer so that the backing layer and foil layer are separatable by a twisting of the cap. The synthetic backing layer provides improved strength and liquid resistance characteristics over pulpboard type seals, and is cuttable with less dust.

Abstract: A tamper-evident heat induction liner for sealing a container includes at least four stacked layers and exhibits improved resistance to moisture migration. A heat seal polymer layer is provided for induction bonding against a container opening. A moisture-impermeable foil layer is secured against the polymer layer opposite the container opening. Tear-resistant backing layer is provided, and is secured to a low cohesive strength layer which is disposed between the backing layer and the foil layer. The low cohesive layer splits when the backing layer is lifted, leaving the foil layer and polymer layer with a portion of the split low cohesive strength layer covering the container opening in a tamper-evident, rupturable manner.

Abstract: A container cap having a base portion, a substantially cylindrical portion extending perpendicularly from a perimeter of the base portion to define an inner surface of the container cap, and an uncovered liner disposed directly on the inner surface of the container cap, the liner having an oxygen absorbent dispersed therein. The container cap is adapted to seal an opening in a container and to absorb oxygen within the container. Also disclosed is a method for removing oxygen from a container by dispersing an oxygen absorbent in a liner, attaching the uncovered liner directly to an inner surface of a container cap without a separate adhesive, and placing the cap over an opening in the container such that the liner in the container cap seals the opening and absorbs oxygen within the container.

Abstract: A closure is formed from a laminate or composite. The laminate is sufficiently flexible to permit it to assume the surface configuration of the rim of a closure without the need for a gasket. The laminate may include an upper layer which is rigid and a lower layer which is softer and has a lower softening temperature than the upper layer. An optional intermediate oxygen-impermeable layer such as ethylene vinyl alcohol can be included between the upper and lower layers. Preferably, the upper layer is a rigid material such as polyethylene terephthalate or polyvinyl chloride and the lower layer is a soft material such as linear low-density polyethylene. The upper layer provides the necessary strength, while the lower layer provides a tight seal on the rim of the container. The intermediate or bottom layer can also include an oxygen indicator which changes color upon exposure to oxygen.

Abstract: The plastic snap closure possesses a snapping means (3) on the inside surface of the cap wall (2), said snapping means being able to be snapped over a bead on the container mouth. In order to display initial opening of the closure, approximately vertical weakened zones (4) are provided on the lower edge of the closure cap. The cap wall (2) will tear on initial opening of the snap closure in the area of at least one of these weakened zones (4).

Abstract: A tamper-proof closure construction including a cap having a top wall, a skirt and a plurality of tabs extending from the bottom edge of the skirt. The cap fits over the opening in the neck of a container which neck includes a shelf, cams having portions beneath the shelf extending outwardly from the neck beyond the shelf and all portions of the neck between the shelf and a sealing surface on the end of the neck.

Abstract: The invention relates to a container neck (10) and closure (12), particularly useful for foil-sealed containers. The neck (10) and closure (12) include complementary threads (14, 16) or projections and complementary tapered surfaces (18, 20) which are adapted to form an interference fit and seal the closure (12) to the neck (10) at a region clear from the lip (30) of the neck (10) and the crown (120) of the closure (12). Any foil seal (28) present on the container neck (10) remains free from contact with the closure (12) during application and tightening. Preferably the neck (10) includes a recessed lip (30, 32) further to protect the seal and to inhibit drop formation. An outer edge of the container lip may be chamfered to provide a pull tab on the foil seal. Additionally, the foil may be of a larger diameter than the lip of the container, so that it provides an overhanging edge of foil to facilitate the removal of the foil, but not of such a large diameter that it touches the inner surface of the closure.

Abstract: A conically threaded closure system is described which provides a compressive radial force to axial force ratio in the range of 4.3-6.2:1, resulting in an optimum stress distribution throughout the thread structures, optimum thread engagement with minimal rotational effort and primary and secondary sealing means. The system comprises a container having a first conical thread structure and a cap having a second conical thread structure disposed on the inside surface of the cap skirt adapted to cooperate with the first conical thread structure. The first and second conical thread structures each have a conical angle in the range of approximately 20.degree. to 30.degree., preferably approximately 24.degree. to 28.degree..

Abstract: A cap for the neck of a corked glass bottle constructed as a single piece by stamping a thin sheet of material having one or more layers. The sheet has at least one gas-impervious layer. The cap includes a planar portion, the lower surface of which contacts and remains unadhered to the upper surface of the neck. Depending from the periphery of the planar portion is an annular skirt. A heat-sensitive adhesive adheres the inner surface of the skirt to the annular outer surface of the neck upon heating. In a second embodiment, the adhesive layer covers the entire inner and lower surfaces of the cap. A disk is adhered to the inner surface to prevent the upper surface of the neck from contacting the adhesive.

Abstract: Potable liquid containers including a container, container closure and a closure liner, where the closure liner is formed from a polymeric heterogeneous blend of unvulcanized and uncrosslinked butyl rubber and a thermoplastic polymer are described. The closure liners are used for containers with closures such as a twist crown, a crown cork or a screw cap, for bottles, jars and the like, and more specifically for beer, juice and soft-drink bottles with closures made of metal or plastics.

Abstract: An inner seal for sealing containers by heat induction, especially when the inner seal may be in contact with the contents of the container during sealing. The inner seal includes a metallic foil layer which heats up almost instantaneously, and a foam layer which thermally insulates the foil layer from the contents of the container which may be in contact with the inner seal. The foam layer is compressed, and is consequently a poorer thermal insulator, where it contacts the land area of the neck of the container to which it is being sealed.

Abstract: A seal for a container is provided with a method of manufacturing the same. The seal has a unitary pull-tab portion having with a pull-tab formed therein. A layer of polyester film preferably is secured to the unitary member over the pull-tab. A foil seal portion preferably is secured to the pull-tab portion and constructed for securing around the opening of the container. The pull-tab portion preferably is formed of a first layer of a plastic material fused to a second layer of the plastic material by extruding the one onto the other with a release layer therebetween such that an unfused portion of the first layer forms the pull-tab.

Abstract: The present invention employs a plastic snap-on cap which engages the neck crown and is internally threaded to engage the neck threads of a conventional container. A foam gasket under the top of the cap prevents leakage by sealing against the neck lip. The cap has internal threads which snap over and then engage under the neck threads. Vertical "barriers" below the cap threads prevent unscrewing the cap so long as the cap skirt is intact. Score lines extend from the bottom edge of the cap skirt to above the internal cap bead which engages the neck crown and extend up to the cap threads. A tear tab is used to tear a vertical strip of the skirt which extends up between the score lines. The cap is thus tamper-evident since it cannot be removed so long as the cap is intact but can be removed by tearing the aforementioned strip. In one modification, a well is formed in the center of the cap.

Abstract: A cap liner and method for producing a cap liner which is particularly suited for use with a cap employed on a hot filled container. The liner includes a disc having one or more outer layers and an intermediate foamed layer bonded thereto. Preferably, the outer layer is formed of a copolymer of polypropylene and polyethylene. The intermediate layer can include a homogeneous admixture of polypropylene and polyethylene or an admixture of polyethylene, a copolymer of polyethylene and polypropylene and ethylene vinyl acetate. One method for producing the cap liner involves mechanically mixing at room temperature polypropylene and polyethylene to form a desired homogeneous admixture for each layer, and then co-extruding the admixtures at approximately 320.degree.-415.degree. F. to form the bonded outer and intermediate layers. Another method involves extruding the copolymer outer layer to the intermediate layer admixture to form the bonded cap liner.

Abstract: A cap liner and method for producing a cap liner which is particularly suited for use with a cap employed on a hot filled container. The liner includes a disc having one or more outer layers and an intermediate foamed layer bonded thereto. Preferably, the outer and intermediate layers are formed of homogenous admixtures of polypropylene and polyethylene. The method for producing the cap liner involves mechanically mixing at room temperature polypropylene and polyethylene to form a desired homogenous admixture for each layer, and then co-extruding the admixtures at approximately 320.degree.-390.degree. F. to form the bonded outer and intermediate layers. Alternatively, the intermediate layer may be formed of foamed polyethylene.

Abstract: A cap liner and method for producing a cap liner which is particularly suited for use with a cap employed on a hot filled container. The liner includes a disc having one or more outer layers and an intermediate foamed layer bonded thereto. Preferably, the outer layer is formed of a copolymer of polypropylene and polyethylene. The intermediate layer can include a homogeneous admixture of polypropylene and polyethylene or an admixture of polyethylene, a copolymer of polyethylene and polypropylene and ethylene vinyl acetate. One method for producing the cap liner involves mechanically mixing at room temperature polypropylene and polyethylene to form a desired homogeneous admixture for each layer, and then co-extruding the admixtures at approximately 320.degree.-415.degree. F. to form the bonded outer and intermediate layers. Another method involves extruding the copolymer outer layer to the intermediate layer admixture to form the bonded cap liner.

Abstract: A dual cap lining for bi-directional venting comprising a substantially shaped, laminated or secured, fluid-impermeable, gas-permeable material bottom layer congruent with a container opening, and having an extruded and cast polyethylene material top layer which is provided with channels on the lower surface of the top layer, and the material of construction of the laminated bottom layer is gas-permeable such that the dual lining allows bi-directional gas flow therethrough, for gases which have built-up in the interior of the connected container to safely escape by venting from the interior of the container to the external ambient atmosphere through openings existing between the spiral screw threads of the cap closure and threads of the container neck, and the reverse venting to equilibrate for relatively increased external pressure, without passage of solid or liquid material from the interior of the container through the lining to the closure and to the exterior of the container.

Abstract: A closure assembly configured for use with a container having a neck with a land surface at its uppermost end defining a mouth. The closure assembly includes a cap, a liner, and a fitment with a dispensing surface dimensioned to span the mouth of the container. A plurality of liner tabs center the liner in the cap during assembly, and retain the liner and the fitment within the cap prior to placing the cap on a container. One or more tabs may extend through slots in the fitment.

Abstract: A tamper evident seal and system for use on a variety of container and closure combinations providing a seal across the juncture of the container and closure or across the container opening and positive indication to consumers of tampering with the seal. The seal system comprises the combination of indicia specifically placed on the container and a seal means in the form of a heat shrink band or a foil sheet applied to the container in a manner so as to temporarily obscure the indicia. In a first embodiment the indicia is applied to the container in an area below the neck and the seal means comprises an opaque band adhered to the container and closure over the juncture of thereof and over the indicia. In a second embodiment, the indicia is applied to the lip around the container mouth and the seal means comprises a foil sheet adhered to the lip and covering the mouth.

Abstract: An internal thread is formed on the inner peripheral surface of a skirt wall in a container closure of a plastic. The cross-sectional shape of the internal thread is defined by an upper side edge extending radially inwardly in an axially downwardly inclined manner, a lower side edge extending radially inwardly in an axially upwardly inclined manner, a front edge extending substantially vertically, two concave arcs, and two convex arcs.

Abstract: The present invention employs a plastic snap-on cap which engages both the neck crown of a container having a rectangular body and a neck having screw threads and is internally threaded to engage the neck threads of the conventional container. A foam gasket under the top of the cap prevents leakage by sealing against the neck lip. The cap has internal threads which snap over and then engage under the neck threads. Vertical "barriers" below the cap threads prevent unscrewing the cap so long as the cap skirt is intact. Score lines extend from the bottom edge of the cap skirt to above the internal cap bead which engages the neck crown and extend up to the cap threads. A tear tab is used to tear a vertical strip of the skirt which extends up between the score lines. The cap is thus tamper-evident since it cannot be removed so long as the cap is intact but can be removed by tearing the aforementioned strip. In one modification, a well is formed in the center of the cap.

Abstract: A plastic beverage closure comprising a base wall, a peripheral skirt and a plurality of threads on the inner surface of the skirt for engagement with the threads of a container which may be made of glass or plastic. The plastic closure includes a compression molded seal extending about the periphery of the inner surface of the base wall and the juncture of the base wall to the peripheral skirt. The closure includes a central axially thickened portion; a channel surrounding the thickened portion and extending radially to an annular radially thickened portion on the skirt at the juncture with the base wall. A concave surface extends from the base of the channel and merges with the surface of the annular portion. A compression molded liner is provided on the thickened portion, channel and concave surface of the closure and defines a planar sealing surface of contact with the end surface of the finish of a container and an arcuate surface for engaging the arcuate surface of a container.

Abstract: A lid for sealing a container. The lid adheres to the container by a vacuum formed within the container. The lid is formed of a substantially circular panel having a flanged perimeter and a concave depression on an upper side of the circular panel. A pressure release hole extends through the concave depression of the circular panel and sanitary coating is disposed on a lower side of the circular panel. A first adhesive material is applied to the lower side of the lid by fusion to the sanitary coating to form a thin film over the release hole, and a second adhesive material is disposed in the concave depression on the upper side of the lid to form a removable seal. The second adhesive material has the same properties as the first adhesive material.

Abstract: A closure apparatus for a container includes an adapter which is mounted on or otherwise integrally formed with the container adjacent the container opening, and a cap which is moveable between an opened position and a closed position over the container opening. A coupling mechanism is provided for interconnecting the cap to the adapter so as to enable the cap to slide relative to the adapter between the opened and a closed position. A clamping mechanism, preferably provided by opposing ramped surfaces on the adapter and cap, is provided ton cooperate with the coupling means whereby the cap is urged into pressing engagement with the adapter over the container opening as the cap slides into the closed position.

Abstract: A reinforced sheet material suitable for making innerseals and sealing membranes for containers. The sheet material comprises a layer of sealing material for bonding the sheet to a container, a layer of material substantially impermeable to air and moisture, and a reinforcing layer comprising at least two plies of monoaxially oriented film combined in lamination with the strong direction of at least one ply crossing the weak direction of another ply. Tabbed innerseals made from the sheet material of this invention exhibit less springback than do tabs of conventional tabbed innerseals. The invention also includes innerseals and sealing membranes made from the aforementioned sheet material and containers utilizing these innerseals and sealing membranes.

Abstract: A container closure having a multiple liner seal is disclosed. The closure comprises a plastic closure cap having a circular top wall portion and a depending annular skirt portion. The skirt portion has an internal thread formation for threadedly engaging a cooperative container. In a typical closure, a pilfer band depends from the skirt portion. The closure cap has an abutment internal thereto, generally at the juncture of the top wall portion and the skirt portion. A first resilient, molded-in plastic seal is positioned in the cap adjacent to and against the top wall portion, and a second resilient plastic seal is positioned in the closure and extends thereacross resting upon the abutment. When the closure is threadedly engaged with a container, the second seal provides a top/side seal to seal the contents from the environs. The closure will seal a container with or without the second seal in place because of the independent sealing capabilities of the first seal.

Abstract: A plastic closure cap of the present invention includes a plastic interior liner. The cap and the liner are bonded by melting them to one another without penetrating either the cap or the liner. The bond between the cap and the liner is extremely durable and resistant to solvent vapour action.

Abstract: A closure-assembly includes a molded plastic closure cap, and a disc-shaped insert liner positionable adjacent a top wall portion of the closure cap. An annular shoulder of the closure cap cooperates with the insert liner to form a top/side seal with an associated container. The annular shoulder includes at least one annular liner-engaging rib, which cooperates with the insert liner to enhance sealing performance of the closure assembly, retain the liner in position with the closure cap, and facilitate high-speed closure formation.

Abstract: A plastic beverage closure comprising a base wall, a peripheral skirt and a plurality of threads on the inner surface of the skirt for engagement with the threads of a container which may be made of glass or plastic. The plastic closure includes a compression molded seal extending about the periphery of the inner surface of the base wall and the juncture of the base wall to the peripheral skirt. The closure includes a central axially thickened portion; a channel surrounding the thickened portion and extending radially to an annular radially thickened portion on the skirt at the juncture with the base wall. A concave surface extends from the base of the channel and merges with the surface of the annular portion. A compression molded liner is provided on the thickened portion, channel and concave surface of the closure and defines a planar sealing surface for contact with the end surface of the finish of a container and an arcuate surface for engaging the arcuate surface of a container.

Abstract: A tamper evident closure for a container has a seal member which is in a concave or convex condition to show closure integrity. The seal is visible through an opening in the cover of the container. Filling the container under pressure which is higher or lower than atmospheric produces the distention or contraction of the seal member that evidences that no tampering or leakage has occurred.

Abstract: A hermetically sealed vial for liquids is provided by the present invention. The liquid can be a calibrant or a reference fluid for gas analysis where the liquid has dissolved gas or medication or medicaments. The vial is a glass container means with at least one opening. The dimensions of the opening range from that which is just effective for the addition and removal of fluids to that which is the smallest side of the container. A flange circumferentially extends about the opening. The vial has the liquid that does not fill the vial to leave room for a head space. The head space is present in an amount of the volume percent of the vial ranging from 1 to 99 compared to the amount of the liquid. The vial is sealed with an air impermeable bilaminate seal comprised of an adhesive polymer contacting the vial and a metal surface facing externally from the vial. Before the vial is sealed by heat or induction sealing a securing means like a cap or chemical coupling agents are used to hold the seal on the vial.