Abstract: A system for retaining and releasing an active compound, such as a volatile flavor oil is provided. A storage layer of foam is located between layers of diffusion material which are extrusion coated onto the storage layer. A barrier layer, such as a foil material, is peelably bonded to the film layer on one side of the storage layer. The resulting composite is adhesively secured to a closure, such as a container cap, and remains with the cap. The foil layer is fixedly bonded to a container and remains with the container after the closure is removed by a consumer. With removal of the foil layer and subsequent openings and closings to obtain product within the container, new concentrations of the active compound are created within the container head space and are available for a substantial aroma impact upon subsequent opening.

Abstract: A plastic closure that comprises a cap having a base with a peripheral skirt defining the cap interior and threads on the skirt for securing the closure to a container. A liner is secured to the interior of the cap, preferably by being compression molded in situ on the base. The liner consists essentially of a multiplicity of alternating layers of a matrix polymer material such as EVA and a barrier material such as EVOH to resist transmission of gas, water vapor and/or flavorants through the liner. The matrix polymer material preferably is preblended with a compatibilizer material such as a maleic anhydride grafted polymer that ties the matrix polymer material to the barrier material.

Abstract: Sealing cap for closing screw top receptacles includes a metal cap having inner and outer surfaces, a threaded insert formed of a plastic material disposed within the metal cap and rigidly fixed to the inner surface thereof, and a coating bonded to at least a portion of the inner surface of the metal cap. The coating contains plastic material in a divided state and is heat sealed to the insert.

Abstract: A separating closure liner comprises a laminate construction of a reusable liner portion and an inner seal portion, each separated by a light tack shearable adhesive. The light tack shearable adhesive enables the reusable liner portion to break away from the inner seal portion after it has been sealed to a container neck. The reusable liner portion remains in the closure of the container for sealing purposes. Use of the light tack shearable adhesive permits the use of polyolefin foamed materials as a reusable liner portion.

Abstract: A plastic closure that comprises a cap having a base with a peripheral skirt defining the cap interior and threads on the skirt for securing the closure to a container. A liner is secured to the interior of the cap, preferably by being compression molded in situ on the base. The liner consists essentially of a multiplicity of alternating layers of a matrix polymer material such as EVA and a barrier material such as EVOH to resist transmission of gas, water vapor and/or flavorants through the liner. The matrix polymer material preferably is preblended with a compatibilizer material such as a maleic anhydride grafted polymer that ties the matrix polymer material to the barrier material.

Abstract: A lightweight form fitting container cover having a top surface, a bottom surface, and an integrally formed rim projecting downwardly from the bottom surface and defining an interior space within the rim, and further having at least one layer of deformable foam inserted into the interior space within the rim for a form fit over the upper rim of a container.

Abstract: A multi-layer closure liner for carbonated beverage containers and the like, including a gas barrier layer, a first tie layer on an upper surface of the gas barrier layer, a second tie layer on a lower surface of the gas barrier layer, a first polyolefinic resin layer on the upper surface of the first tie layer, and a second polyolefinic layer on the lower surface of the second tie layer. In the preferred embodiment, the gas barrier layer is ethylene vinyl alcohol copolymer (EVOH), the first and second tie layers are functionalized polyolefin and the first and second polyolefinic resin layers are ethylene vinyl acetate (EVA). The layers defining the closure liner are preferably simultaneously formed using a co-extrusion process to prevent the gas barrier layer from being exposed to moisture.

Abstract: A container mouth (21) is sealed with an inner seal which comprises a reseal liner (9) fitted inside of a cap (23) and a seal cover (10) separably laminated to the reseal liner and remaining on the container mouth after the container (20) is uncapped. The seal cover comprises a metal foil (5), a glassine paper (7) layered on the underside of the metal foil, and a hot-melt adhesive layer (8) coated on the underside of the glassine paper by gravure roll coating process. A polyethlene film (6) is preferably layered between the metal foil and the glassine paper to provide a better peel-off strength therebetween. The glassine paper may be replaced with an easy-peelable plastic film, such as a PET (polyethlene terephthalate resin) film. The inner seal fitted in the cap is placed onto the container mouth, and then the cap is subjected to a high frequency of 20-600 KHz to melt the hot-melt adhesive layer, whereby the seal cover hermetically seals the container mouth.

Abstract: Packaging or lidding material containing at least two layers of material, and between the two layers hidden information in the form of a printed image viz., information that is visible only after peeling the first layer from the second layer. The packaging material serves the manufacture of film-type packaging or parts thereof, or as lidding material for containers. The packaging or lidding material of a packaging unit contains the following sequence of layers: a) a first layer of material, b) a printed pattern or image, the limits of which lie within the dimensions of the package in question or the lid of the packaging unit, c) a dividing layer, the dimensions of which are the same or greater than the printed image b) and smaller than the dimensions of the packaging or lid of the package, d) an adhesive layer covering the whole of the surface, e) a second layer of material, where the printed image b) can be made visible by lifting the first layer of material a) from the second layer of material e).

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 lid for foodstuff containers includes a shell shaped so that it can be fitted over an opening in a container, and a PVC-free seal, bearing an inscription, attached to the bottom of the shell and able to seal the lid to the container; the seal is applied to the bottom of the lid by applying adhesive paint between the bottom and the seal; this paint which can be used to control the adherence of the seal to the bottom, consists of a mixture of synthetic resins and hydrocarbons with added metallic pigment; a film bearing the inscription is applied over the paint, said inscription made using an ink which has a given chemical-physical affinity with the material used for the seal; it is, therefore, easy to detach the seal from the bottom of the lid upon which the inscription is clearly reproduced.

Abstract: A container assembly provided with an antibacterial agent against “slow-leak” bacteria, comprising a container such as a plastic bottle which has a mouth portion having a rim; and a seal member such as a crown cap fitted to the mouth portion at the rim, wherein at least either a surface portion of the rim or the rim-contacting surface portion of the seal member includes an antibacterial agent such as silver zeolite in the form of a coating or a liner, thereby effectively blocking the entry of unwanted live bacteria and eumycetes which may enter the interior of the container assembly due to slow-leak.

Abstract: A multi-layer closure liner for carbonated beverage containers and the like, including a gas barrier layer, a first tie layer on an upper surface of the gas barrier layer, a second tie layer on a lower surface of the gas barrier layer, a first polyolefinic resin layer on the upper surface of the first tie layer, and a second polyolefinic layer on the lower surface of the second tie layer. In the preferred embodiment, the gas barrier layer is ethylene vinyl alcohol copolymer (EVOH), the first and second tie layers are functionalized polyolefin and the first and second polyolefinic resin layers are ethylene vinyl acetate (EVA). The layers defining the closure liner are preferably simultaneously formed using a co-extrusion process to prevent the gas barrier layer from being exposed to moisture.

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: A resealable liner and induction seal combination is disclosed. The combination has a transparent, removable, tamper-evident inner seal for a container and a liner that remains within a closure to provide a resealable, chemically resistant closure for the container.

Abstract: The present invention provides containers and container caps for salad dressings, ketchup, barbecue sauces and other dispensable contents, which have liners which indicate whether or not the containers have been tampered with, and which may be removed by the user without the use a knife or similar tool.

Abstract: A plastic container has a high resistance to chemical attack and is made by a method including extruding and inflating a tube in a single operation by a coextrusion blow molding process to form a hollow plastic body. The tube consists of an outer layer made of glycol-modified polyethylene terephthalate (PETG) and an inner layer made of polyethylene terephthalate (PET), polyethylene naphthalate (PEN) or a mixture thereof. Selection of the foregoing materials and layers allows the plastic body for the container to be made in a single operation by coextrusion blow molding.

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 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: 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 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: Composite material for seals of plastic caps, especially of screw caps, ensuring leakproofing against liquids and imperviousness to gases at the same time, characterized in that it comprises, combined in a coherent multilayer structure, at least one middle layer (4) made of a plastic substance with a gas barrier effect, with a high modulus of rigidity, two outer layers (7) arranged on either side of the middle layer and consisting of a plastic substance with a low modulus of rigidity, each of the outer layers having a thickness greater than the thickness of the middle layer, and between the middle layer (4) and each outer layer (7) an intermediate layer (5) made of a substance of the same class as the outer layer, but with a high modulus of rigidity.

Abstract: A dual cap lining for bi-directional venting comprising a substantially round, disc-shaped, laminated, fluid-impermeable, gas-permeablematerial bottom layer, and having an extruded and cast polyethylene material top layer which is provided with apertures which communicate with the bottom layer and also communicate with channels provided on the upper 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 exte

Abstract: Two liners are provided: one for containers with dry contents, one for containers with liquid contents.The liner for dry contents has layers pulp/foil/wax/paper/heat seal, which are laminated and placed into a closure. The closure is mounted on a container neck, after which an induction heating process is carried out. After induction, the pulp and foil layers remain in the closure while the wax layer is absorbed into the paper layer and stays on the container neck along with the heat seal layer.The liner for liquid contents is composed of pulp/foil/polyester/wax/paper/polyester/heat seal. This liner, which is also laminated, is placed into a closure and mounted to a container neck. Following an induction heating process, a pulp/foil/polyester laminate remains on the closure while the paper/wax layer (wherein the wax has been absorbed by the paper) remains on the container neck along with a polyester layer and the heat seal layer.

Abstract: The present invention relates to a device for opening a receptacle having a peripheral rim on which a capsule is head sealed. The capsule includes a heat-sealable bottom layer and a metal top layer that adheres to the heat-sealable layer. Above the capsule, there is provided a tongue constituted by a metal sheet suitable for completely covering the metal layer of the capsule. The sheet is bonded to the metal layer in a lateral segment by a layer of adhesive material that adheres to the metal layer and to the metal sheet. The capsule is peeled off the receptacle by pulling the tongue upwards.

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: A sealing cover for an opening of a container has a first foil that seals the opening of the container. A metallic foil, especially aluminum foil, is also provided for inductive sealing of the first foil at the lip of the opening, along with a removable sealing lid that is releasably screwed onto the container. A releasable adhesive control layer positioned between the first foil and the metallic foil, enables the metallic foil to be detached from the first foil after the sealing lid has been removed. An elastic layer is provided between the sealing lid and the metallic foil. Between the metallic foil and the elastic layer is a separation layer, which becomes liquid at induction temperatures, and a suction layer. During the induction process, the latter absorbs the liquified substance of the separation layer. The adhesive control layer does not have such an adjoining suction layer.

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 covering (A) which is developed as closure for infusion bottles (3) or the like, having a cap (1) adapted to be flanged at its lower edge (11) onto the neck (2) of the bottle, the cap having a hole (9) in its top (8) for the formation of a puncture region, and in order to obtain a structural shape which is of simpler manufacture and more favorable for disposal, the hole (9) is closed by the foil section (16) of a supplementary cap (17) which, as a result of that fact that it extends to the lower edge (11) of the cap (1), can be flanged with the latter and is attached by adherence to the cap (1).

Abstract: A multi-layer gasket for providing a seal between a mounting cup and a container comprising a middle layer of rigid plastic material and inner and outer layers of softer plastic material. The middle layer supports the inner and outer layers, which provide sealing surfaces with the mounting cup and the container bead. A gasketed mounting cup comprising a panel, a skirt integral with and depending from the periphery of the panel, wherein the skirt is outwardly flared to form an annular channel for receiving a container bead that defines the container opening and a multi-layer gasket positioned in the channel portion of the mounting cup, which gasket comprises a middle layer of rigid plastic material, an inner layer of soft plastic material adjacent the channel of the mounting cup and an outer layer of soft plastic material for engaging the container bead. The middle layer is preferably high density polyethylene or polypropylene and the inner and outer layers are preferably linear low density polyethylene.

Abstract: An innerseal facing construction is disclosed which includes three layers. An induction heatable layer overlies a heat sink layer, which in turn overlies a bonding layer. The bonding layer has several strata of material of progressively higher melting points. The construction provides an innerseal facing that may be used over a broad range of induction power levels to provide progressively stronger bonding between the innerseal facing and the container.

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: A container closure comprising a container closure shell and a resin liner applied to the inner surface side of the shell, wherein the resin liner is constituted by an upper layer portion which is composed of a resin composition containing such additives as disoxidation agent, drying agent, deodorant, antibacterial agent and thermo color agent and which forms a panel portion on the inside of the hermetically sealing portion, a lower layer portion which is composed of a thermoplastic resin having cushioning property and elasticity and which is interposed between the upper layer portion and the top surface of the shell to join them together, and a hermetically sealing portion which is formed on the outer peripheral side of the panel portion integrally with the lower layer portion.

Abstract: A cap for a storage jar or the like for hospital use in storing syringe needles preparatory to disposal, in the construction of which alternating discs of steam permeable construction material and non-needle puncturable construction material, the latter with steam passageway openings, are embodied in the cap so that the syringe needles can be steam autoclaved through the cap, moving through the steam permeable discs and the steam passageway openings of the other discs, so as to sterilize the stored syringe needles, and the steam passageway openings are held out of register or alignment with each other so as to prevent projection of any stored syringe needle out of the jar and coming into contact with a hospital employee or other individual.

Abstract: A sifter and liner assembly and method of making the assembly which is configured for use with a container. The sifter is dimensioned to span the mouth of the container and has an upper surface, a lower surface and a least one aperture. The liner is dimensioned to cover at least the aperture of the sifter and includes an integral pull tab. A layer of permanent adhesive material is located on a peripheral edge of the lower surface of the sifter to secure the sifter to the lip of the container. A layer of impermanent adhesive material is located between the sifter and the liner for removably securing the liner to the sifter. The sifter and liner are retained together within the closure cap. The sifter, liner and closure cap form a package which can be stored, transported and applied to the container as a unit.

Abstract: A cap with an induction seal closure for sealing the pouring opening of a container, the induction seal closure comprising a polymer sealing layer (27) capable of being heat-sealed to the top surface of the pouring opening of the container, an aluminum foil (22) for heat-sealing said sealing layer by inductive heating of the aluminum, a first releasing layer (25) between said aluminum foil and said sealing layer and a second releasing layer (21) between said aluminum foil and the top wall of said cap, the releasing power of said second releasing layer (21) being greater than that of said first one (25) so that upon removal of the cap from a sealed container the aluminum foil (22) remains adherant to the sealed container instead of to the cap while yet being easily peelable from the container as a consequence of the presence of said first releasing layer (25).

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 reagent vessel and support rack for use in an automated clinical analyzer are disclosed. Characteristic features of the vessel are a membrane covering which is puncturable and preferably self-sealing, and characteristic features of the support rack are a rigid wall and retaining members to hold the vessel in the rack with the membrane against the rigid wall of the rack, thereby providing structural support to the membrane, with holes in the wall to permit access to the membrane and hence to the contents of the receptacle.

Abstract: A dispensing assembly includes a seal that is induction-bonded to an outlet of a container. A cap is detachably connected to the container over the seal to protect the seal during shipping. Once the cap is removed, the seal can be peeled away from the outlet. The absence of the seal can be observed when an attempt is made to reconnect the cap to the container after the seal has been removed.

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.

Abstract: A tamper-evident multiple layer induction foil liner for sealing the opening of a container comprises a "sandwich" having a first layer in the form of a fusion-bond heat seal polymer. This heat seal polymer is fusion bonded to the lip of the container opening to secure the liner to the opening. The next layer is a low-cohesive strength layer which, in turn, is bonded to an aluminum foil layer strengthed with tear-resistant backing. A pull-tab is provided to facilitate removal of the liner after the cap is removed from the container. When the pull-tab is lifted, the low-cohesive strength layer splits or shears through the application of a relatively small amount of force. Thus, the aluminum foil and tear-resistant backing readily may be removed from the container opening. It is then a simple matter to puncture the thin and mechanically weak polymer layer to uncover the container opening.

Abstract: A screw cap of thermoplastic material, particularly intended for the closure of glass containers used in the food industry, is provided on the outer surface of its horizontal end wall (1) with a thin covering layer (13) of a composite laminated material which is adapted to form a barrier against the passage of gases through the wall. This composite, laminated material is constituted by a disc (13a) incorporated in the outer face of the horizontal end wall (1) of the cap during the injection moulding of the cap. The disc (13a) is permanently bonded to the horizontal end wall (1) of the cap and to a downwardly-curved wall (10) connecting the peripheral edge of the horizontal end wall (1) to a rounded annular shoulder (11) provided at the top of the cylindrical skirt (2) of the cap.

Abstract: A cap device to be mounted to a mouthpiece of a container, in one aspect, comprises a cap member provided with an inner hollow portion and a film member accommodated in the inner hollow portion. The film member has a laminated structure composed of at least one metal including layer and a fusing layer abutting against an open end face of the mouthpiece mounted to the container. The cap device mounted to the mouthpiece is sealed by heating the film member by the high frequency induction heating treatment to fuse the fusing layer at the open end face of the mouthpiece. After the sealing, the cap device is removed and a connector means is connected to the mouthpiece and a pressure is applied to break the film member to establish the communication between an interior of the container and a connection line.

Abstract: An oxygen scavenger comprises an oxygen absorbent composition and an oxygen permeable film covering the oxygen absorbent composition and including an asymmetric porous membrane whose outer surface portion in the thickness direction of the asymmetric porous membrane is formed as a dense skin layer. Since the dense skin layer is very thin, the oxygen permeability to the oxygen absorbent composition through the oxygen permeable film can be maintained sufficiently high. At the same time, since the dense skin layer has a sufficiently high barrier property as well as a high oxygen permeability, contact of the substances stored in a container with the oxygen absorbent composition can be surely prevented. The substances stored in the container attached with the oxygen scavenger can be prevented from deterioration due to the oxygen present in the container by a high oxygen absorption ability of the scavenger, and maintained in a good or fresh condition for a long term.

Abstract: A plastic container closure, such as a bottle cap liner or tamper evident seal, is formed from a coextruded multilayer foamed film. The coextruded multilayer foamed film has at least one solid film layer of a first polyolefin blend containing linear low density polyethylene, low density polyethylene, and, optionally high density polyethylene, and at least one foamed layer of a second polyolefin blend containing linear low density polyethylene, low density polyethylene, and optionally ethylene vinyl acetate. The multilayer foamed film may be coextruded using a blown film or cast film extrusion process under defined conditions. the coextruded multilayer foamed film may be laminated to other materials such as polyester film, thermoplastic adhesive films or metallic films and used as a plastic container closure, or may be applied as a liner to a plastic bottle cap.

Abstract: An improved press-on bottle cap is disclosed in which the cap comprises a top disk and a thin-walled outer skirt dependent therefrom with an annular tear band which, when separated from the cap, divides the cap into a lower ring and an upper reclosure cap. An annular lip is provided about the outside wall of the cap, approximately in the middle of the reclosure cap and the tear tab, which is integral with the tear band, extends upwardly into contact with the underside of the annular lip. Preferably, the lip is discontinuous with an open sector above the tear tab, and the cap is fabricated without the necessity to use a split-cavity mold, and a preferred mold construction is also disclosed. A compressible, plastic foam gasket is employed in the cap to seal the container contents. A foam gasket is seated on the undersurface of the cap in a position to bear against the upper end of the neck of the container which is received in the cap.