Abstract: The present development is for a closure which provides a liner for abutting a surface and maintaining an effective pressure against a peelable seal affixed to a container lip as the sealed container is exposed to relatively high temperature and pressure conditions. The liner which abuts a surface of the seal sandwiches the seal between the liner and the container lip. The liner defines a resting thickness at ambient temperature and pressure conditions and is made from a material capable of being compressed to a thickness less than the resting thickness and of recovering to a recovery thickness sufficient to allow the liner to maintain a positive pressure against the seal upon exposure to elevated temperatures, elevated pressure, or a combination of elevated temperature and elevated pressure.

Abstract: Described is a closure for a container. The closure element has a sealing element which contains a thermoplastic polymer; an effective absorbing amount of a cyclodextrin material; and at least one amide lubricant. The cyclodextrin material may be ?-cyclodextrin, ?-cyclodextrin, ?-cyclodextrin, derivatives of ?-cyclodextrin, derivatives of ?-cyclodextrin and derivatives of ?-cyclodextrin and mixtures thereof. The sealing element forms an effective barrier against volatile migrant contaminants, such as aromatic substances, trichloroanisole, aldehydes or ketones, and reduces the contamination with oxidative decomposition products resulting from the lubricant.

Abstract: The invention relates to a lid (1) and a method of opening the lid which is used for closing a container (15) having means on the inner side of screwing on to the neck (2) of a container. Internally, the lid has an inner lid (5) which is secured in the lid (1) by at least one securing means. The object of the invention is to provide a lid which is easy to open without using a great force or by using a tool, and which may simultaneously be disposed of without significant environmental impact. This is achieved by a lid (1) whose collar (3) has at least one projection (13) which points radially toward the centre and which extends from the inner side of the collar (3), wherein, during unscrewing of the lid (1), the projection (13) presses the edge of the inner lid (5) at least at one point out of contact with the upper edge of the package neck. This ensures venting of the volume of the container with a relatively weak torque.

Abstract: Disclosed is a container cap having, as a sealing gasket, a layer of a resin composition as adhered to the surface of the cap body of polypropylene, wherein said resin composition comprises (A) from 25 to 70% by weight of an ethylene-vinyl alcohol copolymer having an ethylene content of from 20 to 60 mol % and a degree of saponification of at least 96% and (B) from 30 to 75% by weight of a polyolefin having a propylene or 1-butene content of at least 50 mol %. The container cap has excellent gas-barrier properties and sealability for containers, and is suitable for packaging containers for foods, medicines, agricultural chemicals, etc.

Abstract: The present development is for a closure which provides a means for maintaining an effective pressure against a peelable seal affixed to a container lip as the sealed container is exposed to relatively high temperature and pressure conditions. The closure includes a liner which abuts a surface of the seal so as to sandwich the seal between the liner and the container lip. The resilient liner and inner foil seal are positioned above a retaining structure and function such that the peelable seal will not rotate relative to a container rim upon engaging the container rim as the closure is rotationally applied. This functions to inhibit torque transmission from the closure to the inner seal or reseal structure and further inhibits imperfections in the container rim from scraping or otherwise damaging the inner seal.

Abstract: A plastic closure includes a plastic closure shell having a base wall with a central opening and a skirt with at least one internal thread or bead for securing the closure to a container finish. A plastic disk is retained within the shell parallel to but spaced from the base wall. The disk includes a plurality of axially extending spacer elements around the disk to engage the undersurface of the base wall and space the disk from the base wall of the shell, and angularly spaced fingers extending from the disk through the central opening of the base wall to retain the disk within the shell. A resilient liner is disposed on an underside of the disk for sealing engagement with the container finish.

Abstract: A plastic closure includes a closure shell having a base wall and a peripheral skirt, and a sealing liner disposed on the base wall of the closure. The sealing liner includes an outer sealing layer of resilient resin secured to the base wall within the skirt, and an inner layer of barrier resin underlying the sealing layer. The base wall and the sealing layer have opposed flat surfaces, one of which has a pocket in which the barrier resin layer is disposed. The sealing layer has a periphery that extends beyond the periphery of the barrier resin layer, so that the sealing layer completely overlies and covers the barrier layer.

Abstract: A seal for a container opening includes a seal layer for connecting to and covering an opening of the container. A pull-tab forming layer is bonded to the seal layer. The pull-tab forming layer has a heat resistant surface joined to the seal layer, and a hinge disposed near the center of the seal. A portion of the pull-tab forming layer defines a pair of opposed pull-tabs extending from the hinge, in which the heat resistant surface covers a top surface of each of the pull-tabs, a surface of the pull-tabs opposite the top surface, and a portion of the pull-tab forming layer facing the surface of the pull-tabs opposite the top surface. A method of forming the seal and a material blank for forming a plurality of the seals are also described.

Abstract: A venting cap liner used in a pressurized container closure arrangement. The cap liner includes a multi-layer sandwich structure having a first layer and a generally flat resilient intermediate layer. The layers include at least one perforation extending through the layers to enable gas flow therethrough. The first layer has a first surface including at least one channel extending from one edge of the first layer to another edge of the first layer. The intermediate layer is responsive to a gas pressure level in the container such that, at a first selected pressure level, the perforation extending through said second layer opens to allow gas to flow through the perforation and at a second selected pressure level, the intermediate layer expands to close the perforation thereby resisting gas flow.

Abstract: A sealing disc and a film composite for a container closure is provided, for use on a container with an opening bounded by a peripheral edge. The film composite includes a plurality of layers. An adhesive layer is arranged at least over a joining surface between the upper layer and the underlying layer.

Abstract: A self-draining container neck and closure comprising a container neck having an upper sidewall portion and a lower sidewall portion, the upper sidewall portion being inset from the lower sidewall portion. The container neck also includes a tamper indicating bead having at least one draining notch therein. The instant invention also includes a closure having a plurality of drainage slots disposed in a spaced configuration. The closure is threadably connected to the container neck, the closure and container threads rotatably engage and provide a drainage path there between.

Abstract: A container and closure assembly whereby a pull tab sufficiently narrow in width is secured to the interior of the closure, thereby preventing the closure from becoming loosened or displaced, yet when sufficient torque is applied by the consumer to open the closure and remove it from the container the narrow pull tab is disengaged from its seal to the interior of the closure, yet having the liner over the mouth of the closure remains intact and undamaged, thus preventing any contamination of the container content.

Abstract: A closure for use on a container having an externally threaded neck is disclosed wherein an inner surface of a downwardly depending skirt portion of the closure cap includes a helical thread having a flat upper surface with a lower thread profile having a first depth greater than an upper thread profile of a second depth. The helical thread of the closure tapers into the sidewalk of the closure skirt. The closure is provided with a seal integral with the inner surface of the skirt, spaced from a top wall of the closure, and retained at a lowermost point along the downwardly depending skirt by a bead.

Abstract: The invention is a device and a method for remotely peeling off a peelable seal, using only one or two pieces of flexible material, allowing the container to be placed in the pouring position, and the delivery orifice to be inserted into a receiving port, all the while sealed; then once in the receiving port, to be unsealed, so as not to spill any fluid outside the receiving port.

Abstract: A thermoplastic retort container for receiving a closure having a compressible gasket. The present invention further includes a sealing system for sealing the finish of a thermoplastic retort container. The sealing system includes a finish configured to engage a compressible gasket within a closure. Moreover, the present invention includes a method of sealing a container using a closure having a compressible gasket, wherein the container has a land portion for engaging the compressible gasket.

Abstract: A closure cap comprises in a transition range (7) between the cap base (2) and the cap skirt (3) a bulge (6) for pressing a sealing disk (5) against a container opening. The bulge (6) comprises an undercut (8) and in sections (9) is provided with weakenings (10) which give the bulge (6) a radial flexibility.

Abstract: Liners with improved oxygen barrier properties for use with closure caps are disclosed. The liners are made of a composition that includes a thermoplastic elastomer, polyisobutylene and polybutylene. The liner is adhered to the inner facing surface of a closure cap.

Abstract: A composite closure includes a plastic outer closure cap, and an inner sealing liner positioned adjacent to an inside surface of a top wall portion of the outer cap. In order to enhance sealing integrity with an associated container, the liner is configured to include inward and outwardly facing sealing surfaces, with the provision of an annular sealing bead providing a top/side seal with an associated container, and an annular sealing plug fitting within the mouth of an associated container for providing an inside seal. The closure construction has been found to maintain sealing integrity with an associated container when the closure and container package is subjected to relatively high temperatures.

Abstract: A venting plastic closure for use with an associated container includes an outer plastic cap having a top wall portion and an annular depending skirt including an internal thread formation. A disc-shaped sealing liner is positioned on the inside surface of the top wall portion for creating a top/inside seal with the associated container. In order to facilitate venting of gas pressure from within the container, and to facilitate removal of the closure from the container by consumers, the closure includes one or more positive stop elements which engage the container after the sealing liner of the closure has been sealingly engaged therewith. The stop elements act to limit the degree of sealing engagement between the sealing lines of the closure and the finish of the closure.

Abstract: A liner disc for a bottle cap for sealingly closing a bottle includes an annular rim portion and a downwardly domed portion depending from the annular rim portion. The domed portion is convex toward the contents of the bottle. A seal layer is provided on the domed portion. Internal pressure of the contents of the bottle acts in a direction tending to flatten the domed portion which in turn expands an annular side wall of the domed portion outwardly to press the seal layer against the inside surface of the bottle to assist in effecting a seal between the bottle and the cap.

Abstract: A method for at least locally providing an article coated with an organic coating with a layer of readily deformable sealing material (so-called compound), which involves a layer of an intermediate of the compound being applied to the coating layer, after which the article is temporarily kept at an elevated temperature in order to form the compound from its intermediate, wherein the coating layer of the article comprises a polyethylene terephthalate and the compound is chosen from the group consisting of urethanes, amides, mixtures thereof and heteropolymers thereof, and in that the free surface of the coating layer prior to the application of the intermediate of the compound, at least at the location where this intermediate is applied, is briefly subjected to a processing operation from the group of equivalent processing operations comprising a flame treatment in the course of which the coating layer does not melt.

Abstract: A closure for containers has a septum of elastomeric material which is self-resealing when punctured by a blunt ended tubular implement to access to the contents of the container. In one application the elastomeric closure is incorporated in a cap for a bottle or vial and is self-resealing after being punctured by a laboratory pipette.

Abstract: A plastic closure includes a plastic closure shell having a base wall with a central opening and a skirt with at least one internal thread or bead for securing the closure to a container finish. A plastic disk is retained within the shell parallel to but spaced from the base wall. The disk includes a plurality of axially extending spacer elements around the disk to engage the undersurface of the base wall and space the disk from the base wall of the shell, and angularly spaced fingers extending from the disk through the central opening of the base wall to retain the disk within the shell. A resilient liner is disposed on an underside of the disk for sealing engagement with the container finish.

Abstract: A container and closure assembly whereby a pull tab sufficiently narrow in width is secured to the interior of the closure, thereby preventing the closure from becoming loosened or displaced, yet when sufficient torque is applied by the consumer to open the closure and remove it from the container the narrow pull tab is disengaged from its seal to the interior of the closure, yet having the liner over the mouth of the closure remains intact and undamaged, thus preventing any contamination of the container content.

Abstract: A threaded closure for a liquid container including tamper-indicating means, having a floating liner which permits the breaking of the tamper-indicating means before the seal formed by the liner is broken. The liner includes a side-seal which extends downwardly from a transversely extending main wall. The side wall of the closure includes a deformable pressure block which distorts radially inwardly when engaged by the uppermost thread surrounding the mouth of the container to engage the side wall and press it against an outer surface of the neck of the container.

Abstract: The invention concerns a method which consists in moulding a plastic cap (1) and steps which consist in: providing, proximate to an inner surface of base web (7) of the cap (1), a first layer (6) of material impermeable to a predetermined gas or gases and depositing, on said first layer (6) set in the cap (1), a second layer (8) made of an elastic material different from that of the first layer (6), said second layer (8) being designed to form the joint, by isolating the first layer from ambient air.

Abstract: A method for creating a seal gasket in the closure cap of a container starting from a cap formed separately, characterised by comprising the following operations: inserting into a cap (1, 10, 100) a first portion (3, 30, 300) of material in the plastic state having barrier properties against O2, CO2, or other gases; inserting a first die (4, 40, 400) to subject said first portion of material to compression in order to form on the base of the cap a first layer (5, 50, 500) of material having barrier properties against said gases; inserting into the cap onto said first layer a second portion (6, 60, 600) of material in the plastic state having hydraulic sealing properties; and inserting a second die (7, 70, 700) to subject said second portion of material to compression in order to form on said first layer a second layer (8, 80, 800) with hydraulic sealing properties.

Abstract: The present development is for a closure which provides a means for maintaining an effective pressure against a peelable seal affixed to a container lip as the sealed container is exposed to relatively high temperature and pressure conditions. The closure includes a liner which abuts a surface of the seal so as to sandwich the seal between the liner and the container lip. The resilient liner and inner foil seal are positioned above a retaining structure and function such that the peelable seal will not rotate relative to a container rim upon engaging the container rim as the closure is rotationally applied. This functions to inhibit torque transmission from the closure to the inner seal or reseal structure and further inhibits imperfections in the container rim from scraping or otherwise damaging the inner seal.

Abstract: A plastic closure that includes a cap having a base with a peripheral skirt defining a 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 compression molding in situ. The liner preferably consists essentially of a blend of matrix polymer material, particulate barrier polymer material and compatibilizer material. The heat and pressure of compression forms the particles of barrier polymer material into platelets that are oriented essentially parallel to the plane of the closure base.

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 closure cap adapted to be removably retained on a container can include a cap portion and a film portion. The cap portion can include an opening adapted to permit flow from an interior of the container to an exterior of the container when the closure cap is retained on the container. The film portion can be adapted to prohibit flow through the opening and can be positionable to permit flow through at least a portion of the opening when the closure cap is retained on the container. A drinking straw can be introduced into the opening to permit flow from the interior to the exterior of the closure cap.

Abstract: A venting plastic closure for use with an associated container includes an outer plastic cap having a top wall portion and an annular depending skirt including an internal thread formation. A disc-shaped sealing liner is positioned on the inside surface of the top wall portion for creating a top/inside seal with the associated container. In order to facilitate venting of gas pressure from within the container, and to facilitate removal of the closure from the container by consumers, the closure includes one or more positive stop elements which engage the container after the sealing liner of the closure has been sealingly engaged therewith. The stop elements act to limit the degree of sealing engagement between the sealing lines of the closure and the finish of the closure.

Abstract: A self-draining container neck and closure comprising a container neck having an upper sidewall portion and a lower sidewall portion, the upper sidewall portion being inset from the lower sidewall portion. The container neck also includes a tamper indicating bead having at least one draining notch therein. The instant invention also includes a closure having a plurality of drainage slots disposed in a spaced configuration. The closure is threadably connected to the container neck, the closure and container threads rotatably engage and provide a drainage path there between.

Abstract: The present development is for a closure which provides a means for maintaining an effective pressure against a peelable seal affixed to a container lip as the sealed container is exposed to relatively high temperature and pressure conditions. The closure includes a liner which abuts a surface of the seal so as to sandwich the seal between the liner and the container lip. The liner defines a resting thickness at ambient temperature and pressure conditions and is made from a material capable of being compressed to a thickness less than the resting thickness and of recovering to a recovery thickness sufficient to allow the liner to maintain a positive pressure against the seal upon exposure to elevated temperatures, elevated pressure, or a combination of elevated temperature and elevated pressure.

Abstract: A plastic closure includes a plastic closure shell having a base wall, a peripheral skirt with an internal thread for securing the closure to a container finish, and an internal bead on the skirt adjacent to but spaced from the base wall. A plastic disk has a periphery loosely captured between the bead and the base wall of the closure shell. An annular ring extends axially from the base of the disk adjacent to but spaced from the periphery of the disk. A resilient liner is molded onto the disk over at least the central portion of the disk base and the disk ring. The ring urges the liner into sealing engagement with a radially inner edge of a container finish when the closure is secured to the container finish.

Abstract: A closure cap and method of making the same wherein an annular or ring-shaped gasket is injection molded onto the inner surface of a cap shell formed of plastic or metal. The annular or ring-shaped gasket includes radially extending tabs integrally formed therewith, one of said tabs being formed at a location wherein the plastic melt is fed to an annular gasket-forming channel in a mold core and another of said tabs being formed at the location wherein plastic melt is discharged from said channel. Preferably, said other tab includes a cold well formation which communicates with the annular gasket through a connecting portion of reduced cross-sectional area with respect to the cross-sectional areas of both the gasket and the cold well formation.

Abstract: A method of making a package that includes the steps of blow molding a hollow plastic container, including blow molding a finish and a moil or dome that extends from the finish, and trimming the moil from the container finish so as to leave a conical flange extending inwardly and upwardly from the finish terminating in a smooth trimmed surface. A closure is provided having a base wall and a peripheral skirt. A liner is secured to the base wall within the skirt, and has a sealing surface spaced from the skirt. The closure is secured to the container finish in such a way that the container flange extending from the finish is deformed radially inwardly and axially downwardly by a peripheral portion of the liner so as to bring the trimmed surface of the container flange into abutment sealing engagement with the sealing surface of the liner.

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

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

Abstract: A beverage container closure includes a cap and a monolithic cap liner having concentric first and second seal rings coupled to the cap. The concentric first and second seal rings are adapted to mate with an annular rim provided on the neck of a beverage container and formed to include an open mouth to allow liquids to flow through the neck into and out of the beverage container. At least one of the seal rings is splayed relative to the annular rim during installation of the cap on the container neck to form a seal between the cap and the beverage container.

Abstract: A seal for a container opening includes a backing layer and a seal layer for connecting to and covering an opening of the container. A pull-tab forming layer is sandwiched between the backing layer and the seal layer. The pull-tab forming layer has a heat sealable surface joined to the backing layer. An opposite heat resistant surface is joined to the seal layer. A hinge is disposed near the center of the seal that joins the backing layer and the sealed layer wherein the backing layer and at least a portion of the pull-tab forming layer define a pair of pull-tabs extending from the hinge. A method of forming the seal including the pull-tab forming layer and a material blank for forming a plurality of the seals are also described.

Abstract: A closure for containers has a septum of elastomeric material which is self-resealing when punctured by a blunt ended tubular implement to access to the contents of the container. In one application the elastomeric closure is incorporated in a cap for a bottle or vial and is self-resealing after being punctured by a laboratory pipette.

Abstract: A pressure proof gasket plate for use with a cup and special or modified lid assembly for a spray gun, consisting of a cup with a first end configured with fittings suitable for attachment to the feed port of the spray gun and a second end with a large opening for access and filling, and a domed lid, with an external mechanism for providing a compressive attachment of the lid to the cup with the gasket plate in between. The floating gasket plate has a compressible gasket configured on its inside surface so as to form a seal when it contacts the edge of the cup as the lid is applied to the cup. The floating gasket plate is sealed to the cup by pressure on its periphery as applied by the domed lid. The floating gasket plate is made of such material and thickness as to resist deflection and deformation under normal working pressure of the spray gun.

Abstract: A closure assembly is provided that includes an outer cap with a skirt dimensioned to telescope over the open top end of the tube. An annular shoulder extends inwardly from the top end of the skirt and includes an aperture through which a needle may be directed. A laminated seal is bonded to the bottom surface of the annular shoulder of the outer cap and extends continuously across the aperture in the annular shoulder. A stopper is secured on the bottom surface of the annular seal and is dimensioned for sealing engagement in the open top of the tube. Outer circumferential portions of the bottom surface of the laminated seal between the skirt and the stopper are bonded to the open top end of the tube. The bond between the closure and the laminated seal is stronger than the bond between the tube and the laminated seal. Thus, the closure assembly retains its structural integrity after opening of the tube and can be used to reseal the tube.

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 closure for containers has a septum of elastomeric material which is self-resealing when punctured by a blunt ended tubular implement for access to the contents of the container. In one application the elastomeric closure is incorporated in a twist-off cap for a bottle or vial and is self-resealing after being punctured by a laboratory pipette.

Abstract: A closure for use on a container having an externally threaded neck is disclosed wherein an inner surface of a downwardly depending skirt portion of the closure cap includes a helical thread having a flat upper surface with a lower thread profile having a first depth greater than an upper thread profile of a second depth. The helical thread of the closure tapers into the sidewall of the closure skirt. The closure is provided with a seal integral with the inner surface of the skirt, spaced from a top wall of the closure, and retained at a lowermost point along the downwardly depending skirt by a bead.

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. In particular the closure system (10)relates to a beverage bottle having a screw cap closure system. The closure system comprises a closure frame (20) providing the physical stability and and protection of the closure system (10) and a sealing means (30) which is removably joined to the closure frame (20) to provide appropriate sealing of the container. The present invention allows to recycle or reuse the closure frame (20) and to recycle the sealing means (30).

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).