Abstract: A container assembly includes a container body having a side wall encircling an axis, and a metal end for attachment to an upper edge of the side wall via heat-sealing. The outer peripheral region is shaped prior to application to the container body such that an annular channel is defined between an inner chuck wall and an outer chuck wall of the metal end. The metal end is pushed straight onto the side wall such that the upper edge of the side wall is received into the channel. The surfaces of the side wall and the opposing surfaces of the chuck walls have heat-sealable material thereon. The metal end is heated to melt and fuse the heat-sealable layers, thereby sealing the metal end onto the side wall. The metal end is shaped such that the free edge of the outer chuck wall is not exposed.

Abstract: A sealing member for a container including a polyethylene or polypropylene foam or film layer bonded to a foil layer. A first PET tab defining layer over at least a first portion of, but is not bonded to the first portion of, the polyethylene or polypropylene foam or film layer. A polypropylene film layer bonded to both a second portion of the polyethylene or polypropylene foam or film layer not covered by the first PET tab defining layer and also to the first PET tab defining layer itself, the bonds being established by an adhesive resin and catalyst to provide a bonding strength sufficient to hold against a manually generated force. The sealing member also includes a second PET layer bonded to the polypropylene film layer.

Abstract: A container is thermoformed from a multilayer sheet, which includes a container body and a flange extending outward from a circumference of an opening of the container body. An end of the first layer extends over an edge of a peeled surface toward a bottom side on an outer end surface of the flange. When a lid is heat-sealed to the flange of the container, even if a seal resin is melted and flowed toward the end surface of the flange, since the edge of the peeled surface is covered with the end of the first layer, the seal resin will not adhere to the edge of the peeled surface.

Abstract: Disclosed is an opening device for a foil closure can be fitted to a container body. The device comprises a spout (4) with a removable disc (10) attached to a pull-ring (12). The disc (10) is secured to the spout (4) by means of a frangible region (30). A foil (8) is sealed to a raised land (34) on a base of the disc (10). The pull ring is mounted to the disc (10) by means of legs so that it applies a force on a peninsula (50) of the disc, thereby reducing the length of the arc over which an initial pulling force is dissipated when the initial tear is being initiated reducing the force required to tear the foil (8) by up to 40%.

Abstract: An element which is punched out in a cover shape for sealing of containers, includes two plies with at least one opening aid which is integrated within these plies, the ply (3) located in the direction of the container having a plastic layer which is provided with perforations or scoring. The layers of the sealing element are cemented by a peelable adhesive layer, the opening aid and the ply which has the plastic layer being free of adhesive in the area of its perforations or scoring. The sealing element enables not only facilitated sealing of food containers, such as microwave containers, since mutual displacement or slippage of the individual plies due to the adhesive layer is prevented, but that any type of penetration of adhesive into the food container, thus into the food, is prevented in any case by the peelability of the adhesive.

Abstract: A sealing arrangement for a plastic bottle includes a blow-molded bottle having a body and a mouth that includes an opening, an injection molded neck that includes a continuous wall that defines a top wall-opening and a bottom wall-opening. The top wall-opening provides a pour spout for liquid contained within the body of the bottle. The bottom wall-opening is fused to the mouth of the bottle so as to surround the bottle's opening. A removable flange is located generally within the bottom wall-opening and a frangible region connects the flange to the wall. A foil is secured to a side of the flange that is generally adjacent to the bottom wall-opening, and the foil is adapted to close the bottom wall-opening. A plurality of foil-cutting teeth are carried by the wall generally adjacent to the bottom wall-opening, generally adjacent to the side of the flange and generally adjacent to the foil. A pull member is secured to the flange.

Abstract: A method of melt-adhering together a member (A) having a layer (a) of a thermoplastic resin exposed on at least a portion on the surface on the outer side thereof and a member (B) having a layer (b) of a thermoplastic resin exposed on at least the surface on the inner side thereof, wherein a self-press holding mechanism is formed on the portions on where the layer (a) and the layer (b) are to be melt-adhered together to press the member (A) and the member (B) onto each other and to hold the pressed state thereof, and the press-adhered portion is irradiated with a laser beam in a state where the layer (a) and the layer (b) are press-adhered together to effect the melt-adhesion. Therefore, the melt-adhesion is effected even without fixing the portions to be melt-adhered together by using an external pressing mechanism, and the container can be sealed at high speeds and stably despite the member thereof has a relatively large thickness.

Abstract: Provided is a structure of an air-tight reclosable processed food container in which a lid can be easily opened, can be reclosed for maintaining a remaining food, and can be checked by the user whether it has been opened or not prior to purchasing the food. The air-tight reclosable processed food container, an upper part of which is opened and includes a container body that forms a space with a bottom surface and an container wall and a lid coupled to the container body capable of being opened and closed. The container body includes a container flange formed to extend horizontally along an upper circumference of a container wall and a coupling groove is formed along an upper inner circumference of the container wall, a container leaf formed to extend downward from the container flange, and a container handle formed to extend horizontally from an arbitrary point of the container leaf.

Abstract: The invention concerns a peel-off package for sterilization.

Abstract: A plug to hermetically seal an aperture in a sheetmetal, or in the floor of a vehicle, comprising, a cap covering the aperture and comprising an external, circumferential flange resting on one side of the sheetmetal or of the floor and fitted with a first circumferential seal, an affixation portion entering said aperture and, a second circumferential seal configured at the cap or at the affixation portion and being a distance from the first seal and resting against the sheetmetal or the said floor, a cavity being subtended by the sheetmetal or said floor, the two seals and at least one wall of the plug, where said plug, includes a pressure-compensating chamber, which communicates with the cavity and, which compensates a change in pressure, caused by a change in temperature, inside the cavity, by changing the volume of the pressure-compensating chamber.

Abstract: A food container is disclosed that is adapted for facilitating venting of gasses to and/or from the interior of a body of the food container. The food container includes a container body, a lid and a sealing membrane. At least one skip seal or gap is formed between the sealing membrane and the container body to facilitate venting. During formation of the at least one skip seal a recess in either the lid or rim of the container reduces pressure at the skip seal to reduce or eliminate inadvertent closing of the skip seal.

Abstract: The invention relates to methods for preparing and performing quantitative PCR analyses, a new sealing device and a new use. According to the invention, a sample vessel containing the samples to be analyzed is sealed by placing a planar sealing device on the vessel to cover the samples and applying pressure on the sealing device in order to deform the sealing device so as to form a light-refracting geometry individually for the samples to be analyzed. The invention offers a convenient way of sealing the vessel and forming analysis-improving optical lenses over the samples simultaneously.

Abstract: The present invention provides a food and drink packing container, in which a transparent vinyl film type cover is attached to an upper rim of the container by heat-sealing, and which has a structure such that the container can be easily opened when desired, because the interior and the exterior thereof are caused to communicate. The food and drink packing container of the present invention includes a container body (2), which contains food and drink therein and has a flange (4) on an upper end thereof, and a film type cover (3), which is attached to the flange by heat-sealing to prevent the food and drink from spilling from the container body. At least one projecting part (5) extends outwards from the flange and is covered with the cover, and a boring protrusion (6) for boring a hole through the cover is provided in the projecting part.

Abstract: A hole plug comprising: a main body part including a cover flange portion for covering an opening, an insertion portion extended from a central portion of a back surface of the cover flange portion to be inserted into the opening, and an engaging portion formed on an outer periphery of the insertion portion to be engaged with a back side peripheral edge of the opening; a thermo-softening resin member mounted on a peripheral edge of the cover flange portion and allowed to flow into a clearance between the cover flange portion and an opening peripheral edge of the plate-shaped member, thereby fixing them together; and an elastic flange portion extended in a skirt-like manner from the back surface of the cover flange portion toward the peripheral edge of the opening and elastically contactable with the peripheral edge of the opening of the plate-shaped member.

Abstract: In a container for solid, paste-like and flowable products, particularly for containing food products, comprising a container bottom part for containing the products, a container lid provided at its top with a foil which is removable to facilitate removal of the container lid, is supported on a flange of the container bottom part, which flange has an upwardly projecting portion extending around the container opening to which the container lid is removably connected.

Abstract: A constructional unit has a frame and a cover. The frame and the cover are formed of materials with different coefficients of thermal expansion. A plurality of spacers is arranged between the frame and the cover and defines a gap therebetween. An adhesive is provided in the gap to attach the frame to the cover and simultaneously seal the gap.

Abstract: A closure system for a container comprises a magnetically permeable element such as a metal ring adapted to be affixed on a container adjacent an opening thereof, and a closure such as a membrane lid having a surface formed by a heat seal material, the closure being heat-sealed to a surface of the magnetically permeable element via the heat seal material. The closure further incorporates a magnetized material structured and arranged to attract the magnetically permeable element so as to affix the closure to the magnetically permeable element following removal of the closure therefrom, whereby the closure system is re-closable by magnetic attraction between the closure and magnetically permeable element.

Abstract: A lid member for a food container having a layered structure in which a surface sheet is laid on a composite sheet, said surface sheet including an easily-peelable area that is easily separated from the composite sheet, formed by applying a lubricant between the surface sheet and the composite sheet, said surface sheet including a non-peelable area adjacent to said easily-peelable area; a first slit cut vertical-sectionally through the composite sheet, said first slit defining one or more apertures in said lid to form an opening area in said composite sheet; a second slit in said surface sheet defining a boundary between the easily-peelable area and said non-peelable area of said surface sheet; and said surface sheet being adhered to said composite sheet at said composite sheet opening area over an area that is smaller than said composite sheet opening area.

Abstract: A multilayer structure of, in succession, a metal layer or a metallized-substrate layer, a layer of a polypropylene-based binder extrusion-coated at a rate of more than 100 m/min. and optionally a polypropylene layer, the metal or metallized layer and the binder layer being made non-delaminable by heat treating the structure. The extrudable binder contains by weight: (A) 5 to 30% of a copolymer of ethylene and one or more comonomers chosen from the group of carboxylic acid esters, vinyl esters and dienes in particular the ethylene/alkyl (meth)acrylate/maleic anhydride terpolymer; (B) 40 to 93% of a stretchable polypropylene; and (C) 2 to 30% of a polypropylene functionalized by an unsaturated carboxylic acid anhydride, especially maleic anhydride; the MFI of the composition being between 10 and 50 g/10 min. (at 230° C./2.16 kg). the multi-layer structure is useful for the production of packages.

Abstract: The present cover is used for permanent sealing of an oval-shaped processing hole (7) in aluminum sheet metal (8) by means of an adhesive joint. The cover consists of a circular cover plate (1) of aluminum with a concentric cover edge (2) and a ring-shaped strip (3) of hot-melt adhesive applied within the cover edge (2). The interior region of the cover plate (1) is connected to a spring plate (5) aligned plane-parallel with the cover plate at a spacing of the thickness of the aluminum sheet metal (8). The outer edge (6) of the spring plate (5) has a contour that corresponds to the shape of the oval processing hole (7) and includes quarter-circular spring tongues (11) which are brought to a tight fit by spring force against the back side of the aluminum sheet metal (8) by a quarter turn of the cover plate to produce the necessary pressure on the adhesive strip (3).

Abstract: A composite container of paperboard has a polymeric film barrier layer on the inner surface thereof. A rolled bead is formed at a top end of the container and a membrane closure is bonded to the bead by a first heat seal material on the bead and a second heat seal material on the membrane. The heat seal materials preferably comprise ethylene acid copolymer such as methacrylic acid or acrylic acid, partially neutralized with zinc or sodium ions. A primer layer is disposed between the heat seal material on the bead and the polymer barrier layer of the container. The primer provides a high z-direction bond strength but is designed to fail in a shear tearing mode when peeling the membrane from the bead, such that the heat seal material on the bead is detached from the bead and remains attached to the membrane. The primer prevents tearing of the polymer barrier layer of the container.

Abstract: The invention relates to a re-closable packaging featuring a container and a cover. The container features a support layer bearing two opposed faces, the innermost face of which is joined to a complexable layer by optionally deposing the face on an outermost face of an optional bonding layer bearing two opposed faces. The optional bonding layer is placed adjacent to a structure featuring: (1) a complexable layer bearing two opposed faces, the innermost face of the optional bonding layer being placed adjacent to the outermost face of the complexable layer, the innermost face of the complexable layer is placed adjacent to an outermost face of (2) a pressure-sensitive adhesive layer bearing two opposed faces, the innermost face of the pressure-sensitive adhesive layer is placed adjacent to a first face of (3) a tearable-welding layer bearing two opposed faces.

Abstract: A package for storing and shipping food products incorporates a multilayer film lid that includes a gas-impermeable exterior layer and a gas-permeable interior layer. The multilayer film lid is heat sealed to a flange of a tray upon which the food product is supported. The gas-impermeable layer may be delaminated from the gas-permeable layer when it is desired to expose the food to atmospheric gases. Separation of the gas-impermeable layer from the gas-permeable layer is facilitated by a film fracture feature included in the heat seal pattern adjacent a pull tab of the lid. The film fracture feature concentrates the separation forces exerted on the tab in a small area so that the gas-permeable layer of the lid readily breaks at the film fracture feature.

Abstract: An over-molded gland seal for producing both a fluidic seal and a fluid conduit. The apparatus includes a substrate having an elastomeric layer over-molded thereon and an elastomeric gland seal molded into the over-molded layer. Another aspect of the apparatus includes a host-part having a raised wall thereon, said host-part receives the elastomeric gland seal and compresses the gland seal with the raised wall. The substrate, the gland seal, and the host-part define an enclosed region. To form the fluid conduit, the apparatus includes a fluid inlet port and a fluid outlet port that communicate with the enclosed region.

Abstract: The present invention is a physical barrier for an orifice in a panel member which includes a plastic carrier and a patch adapted to adhere to said carrier and the panel member. The present invention also includes a method of sealing an orifice in a metal panel member with a plastic carrier. Lastly, the present invention includes a thermoplastic which adheres to both plastic and metal upon the application of heat.

Abstract: A lid member for a food container comprising an easily-peelable area of the layered structure having a lubricant between the base layer and the surface sheet, a non-peelable opening area of the layered structure disposed within the easily-peelable area; a non-peelable area of the layered structure disposed adjacent to easily-peelable area, said lid member further comprising a first tab to peel off the lid member from the container body, a second tab formed on the easily-peelable area along the boundary line between the non-peelable area and the easily-peelable area to open the apertures of the opening area, a first slit, cut from the base layer to the adhesive layer forming apertures in the opening area, a second slit, cut from the surface sheet to the adhesive layer, along the boundary line between the easily-peelable area and non-peelable area, and a third slit, cut from the base layer to the adhesive layer and disposed where the second tab is mounted, from a foot-end of the second tab, spaced from the seco

Abstract: A package for foodstuffs including a cup and a lid. The cup includes an opening surrounded by a flange. The flange has a sealing surface adjacent the opening and a beveled surface spaced outwardly of the sealing surface. The beveled surface extends along a periphery of the flange. The sealing surface has an inner radius R1 and an outer radius R2, the outer radius R2 defining the juncture between the sealing surface and the beveled surface. The beveled surface extends at a predetermined angle with respect to the sealing surface. The lid includes a tab extending outward of the periphery of the flange. The lid is affixed to the sealing surface thereby sealing the opening of the cup. The lid is not affixed to a substantial portion of the beveled surface. The lid and the sealing surface are adapted to release upon exertion of a predetermined pulling force on the tab.

Abstract: A product package (10) having multi-layer labeling cover assembly (26), having a container base (20), a display layer (34), a label (32), an oxygen absorber (30) and a protective layer (28), is utilized to provide a product package that can have the top protective layer of the cover assembly removed for display purposes without requiring the package to be relabeled. The container base has a plurality of sidewalls (13) extending upwards from the container base, ending in a perimeter lip (18) around the top of the sidewalls. The display film layer is attached to the perimeter lip to close the container. The label and oxygen absorber are positioned on the display layer. A protective film layer is placed over the label and oxygen absorber and adhered to the display layer around the perimeter of the container.

Abstract: An easy open package comprises a tray (3) having a rim (5) to which a lidding film can be sealed. A line of weakness (15) is formed at the underside of a corner of the tray to allow the foam material (19) of the tray to be broken to form a tab which facilitates peeling of the lidding film (21) from the remainder of the tray perimeter. The tray 3 includes a liner film 17 bonded thereto and severed at the line of weakness 15.

Abstract: A sealing cover includes an upper cover member which is impervious to bacteria and moisture, and is attached to an annular ring member, also impervious to bacteria and moisture. The upper cover member and annular ring member are attached to each other by means of an adhesive which, when the upper cover member is detached from the annular ring member, leaves substantially no visible indication of adhesive residue on the annular ring member, while losing its adhering properties. Another layer of adhesive is provided on the bottom of the annular ring for attaching the sealing cover to the rim of the opening of a container such as an I.V. container, in a non-removable manner such that the upper cover member can be removed without removing the annular ring member from the rim of the container to which it is attached.

Abstract: A sealed composite container is provided having a tubular body member and a liner ply adhered to the inner surface of the tubular body member. An end of the body member and liner ply is rolled outwardly to form a rim and a lid is heat sealed to the rim. A tacky composition is in contact with the rim and the lid and is positioned therebetween. The tacky composition has sufficient tackiness to temporarily hold the lid in place overlying the rim. At least one of the lid and liner ply comprises a seal layer comprising a heat sealable composition. The tacky composition and the heat sealable composition form a heat seal between the lid and the liner ply, the tacky composition being chemically compatible with the heat sealable composition such that a fusion seal is formed therebetween.

Abstract: A metal can for holding a carbonated or otherwise pressurized beverage or the like, having a rigid metal lid formed with an eccentrically disposed, upwardly projecting annular flange defining an aperture of average diameter between about 0.625 inch and about 1 inch, and a flexible metal foil closure extending over the aperture and peelably bonded by a heat seal to the sloping outer surface of the flange.

Abstract: The present cover is used for permanent sealing of an oval-shaped processing hole (7) in aluminum sheet metal (8) by means of an adhesive joint. The cover consists of a circular cover plate (1) of aluminum with a concentric cover edge (2) and a ring-shaped strip (3) of hot-melt adhesive applied within the cover edge (2). The interior region of the cover plate (1) is connected to a spring plate (5) aligned plane-parallel with the cover plate at a spacing of the thickness of the aluminum sheet metal (8). The outer edge (6) of the spring plate (5) has a contour that corresponds to the shape of the oval processing hole (7) and is somewhat smaller than the diameter of the hole (7).

Abstract: A package for foodstuffs including a cup and a lid. The cup includes an opening surrounded by a flange. The flange has a sealing surface adjacent the opening and a beveled surface spaced outwardly of the sealing surface. The beveled surface extends along a periphery of the flange. The sealing surface has an inner radius R1 and an outer radius R2, the outer radius R2 defining the juncture between the sealing surface and the beveled surface. The beveled surface extends at a predetermined angle with respect to the sealing surface. The lid includes a tab extending outward of the periphery of the flange. The lid is affixed to the sealing surface thereby sealing the opening of the cup. The lid is not affixed to a substantial portion of the beveled surface. The lid and the sealing surface are adapted to release upon exertion of a predetermined pulling force on the tab.

Abstract: The present invention provides a tray for which sufficient adhesion strength can be obtained when thermal bonding between the tray and a stretch film is conducted using a slanted heat roller.

Abstract: For providing a packaging container which permits easy separation of a film from the container, as well as a packaging method and a packing apparatus using the packaging container, the packaging container is constituted by a container for accommodating an article to be packaged, the container having a peripheral fitting edge and an upper opening, and a cover member formed by a film for covering the opening of the container, end portions of the film being converged to form a solid edge portion for fitting with the fitting edge of the container.

Abstract: A food tray delivery system is provided having an upper surface, at least one food retention area, and a cover. The food retention area has a food retention area upper surface and a food retention area sidewall extending generally upwardly from the food retention area upper surface. The food retention area upper surface is spaced a distance below the upper surface and has a peripheral edge. The upper surface has a rib projecting upwardly adjacent the upper surface, with the rib above the upper surface having a width of less than 2 mm and a height of less than 2 mm and with the cover being secured to the upwardly projecting rib, preferably at its upper surface. In one embodiment of the invention, an intermediate raised area is positioned between the upper surface and the rib above the upper surface.

Abstract: A closure for sealing an opening of a tubular container is disclosed, the closure having a paperboard central panel with a plurality of secondary panels extending angularly therefrom forming a surface around the perimeter of the central panel. A plastic skirt is adhered around the perimeter of the central panel and to one side of the secondary panels opposite the surface to reinforce it. A metal foil layer is adhered to the surface, the foil having a side facing the sidewall of the container with a heat-activated adhesive layer thereon. The closure is positioned on the container with the central panel in registration with the opening and the heat-activated adhesive layer engaging the sidewall of the container. The seal between the closure and the container is effected by subjecting the container to an electromagnetic induction field, whereby eddy currents induced in the metal foil by the field cause the heat-activated adhesive to form a bond between the container sidewall and the secondary panels.

Abstract: A method for sealing a container comprising a cup and lid is disclosed. The cup has a lip with a raised sealing bead along its length. During sealing, the raised sealing bead compresses, thereby stretching the adhesive layer on the lower portion of the lid out of the way and forming a direct welded seal with the heat-resistant layer of the lid. The adhesive to either side of the sealing bead forms an adhesive seal between the lid and the remaining portion of the lip. This type of double seal is particularly effective in forming a durable, consistent seal when product is present on the lip of the container. The welded seal is also well suited to situations when the cup may be warped or the sealing bead is otherwise caused to be higher along some portion of its length than along other portions.

Abstract: A container adapted to be sealed with a lid is disclosed. The container cup has a lip with a raised sealing bead along its length. During sealing, the raised sealing bead compresses, thereby stretching the adhesive layer on the lower portion of the lid out of the way and forming a direct welded seal with the heat-resistant layer of the lid. The adhesive to either side of the sealing bead forms an adhesive seal between the lid and the remaining portion of the lip. This type of double seal is particularly effective in forming a durable, consistent seal when product is present on the lip of the container. The welded seal is also well suited to situations when the cup may be warped or the sealing bead is otherwise caused to be higher along some portion of its length than along other portions.

Abstract: A food tray delivery system is provided having an upper surface, at least one food retention area, and a cover. The food retention area has a food retention area upper surface and a food retention area sidewall extending generally upwardly from the food retention area upper surface. The food retention area upper surface is spaced a distance below the upper surface and has a peripheral edge. The upper surface has a rib projecting upwardly adjacent the upper surface, with the rib above the upper surface having a width of less than 2 mm and a height of less than 2 mm and with the cover being secured to the upwardly projecting rib, preferably at its upper surface. In one embodiment of the invention, an intermediate raised area is positioned between the upper surface and the rib above the upper surface.

Abstract: A self-opening can includes a container, and a rim member which has an outer peripheral portion sealingly joined to an edge of the container and an inner peripheral portion extending inwardly of the outer peripheral portion and confining an opening. The inner peripheral portion has a groove which extends around the opening. A filler of non-metallic plastic material fills and is exposed from the groove. A cover panel closes the opening and extends to the inner peripheral portion of the rim member. The cover panel has a layer of non-metallic plastic material which is connected sealingly to the filler.

Abstract: Glass bottles having undergone high-frequency heat sealing, to depress the dispersion of sealing strength as low as possible and to improve the ease of both sealing and unsealing. A rough surface having minute unevenness is formed in the proximity of the apical part of the mouth of a glass bottle, wherein the apical part contacts with a sealing material. Since (1) a contact area between the sealing material and the glass surface decreases, and the quantity of heat taken by the glass from the sealing material decreases, (2) a bond area increases; and (3) an anchor effect is generated, the sealing strength increases, and simultaneously the dispersion of the sealing strength decreases.

Abstract: A sealing film and a method of sealing the film to glass is disclosed. The film comprises a layer of ethylene vinyl alcohol (EVOH) or a laminate comprising an outermost ethylene vinyl alcohol (EVOH) layer for adhering to a glass surface, particularly the rim of a glass container, using heat and pressure. The laminate may include in addition to the EVOH layer an adhesive layer, polymeric layer, optional adhesive layer and stock layer. The film has excellent adhesive properties, is food safe and is suitable as a sealing material.

Abstract: A sealed package for an article of personal use. The package includes a plastic container that defines a storage region and has a sealing surface around an entrance to the region. The package also includes a plastic, multi-layer laminate film sealed to the sealing surface of the container. The film is removable away from the sealing surface in one piece and has deadfold characteristics.

Abstract: A metal can for holding a carbonated or otherwise pressurized beverage or the like, having a rigid metal lid formed with an eccentrically disposed, upwardly projecting frustoconical annular flange defining an aperture of average diameter between about 0.625 inch and about 1 inch, and a flexible metal foil closure extending over the aperture and peelably bonded by a heat seal to the sloping outer surface of the flange.

Abstract: This invention relates a closure with a directionally peelable opening feature for articles comprising first and second layer of different polymeric films, wherein each layer has an upper and lower surface, the upper surface of the first layer is peelably attached to the lower surface of the second layer at a separation interface, provided that when the closure is used to secure an article, at least one portion of the surface and of the upper surface of the first layer or the lower surface of the second layer is not attached to the container. The invention also relates to a container sealed with the directionally peelable closure. The closure provides a means for providing a strong sealing closure that is directionally peelable requiring little effort. In another aspect the invention provides a means for using a container more than once.

Abstract: A package (1) for solid, liquid or pasty foodstuffs or for medical products, the package allowing for simple opening and reclosing of a cover over the package, the package comprised of a rigid or flexible tray (2) of multi-layer thermoplastic material. The thermoplastic material comprises an outer supporting layer (5) of amorphous polyester, an intermediate layer of permanent adhesive (6), and an inner, weldable layer (7) of polyethylene. The cover (3) comprises a weldable layer of polyethylene or a thermoformable structure similar to that of the tray. The package includes an impermeable pouch which receives the contents and which is delimited by the weldable layer (7) of the tray, the weldable layer (3) forming the cover, and the weld bead (4).

Abstract: The sealing structure (S) for a container (C) provided with an opening (O) comprises a sheet (F) welded around the edge of the opening, this sheet (F) consisting of at least three layers, namely a welding layer (1) pressed against and welded as a bead (4) to the edge of the opening, a barrier-forming exterior layer (2) and an intermediate adhesive layer (3); the weld between the bead (4) of the welding layer (1) and the edge of the opening has a tear strength greater than the strength of adhesion between the welding layer (1) and the adhesive layer (3) so that, at the first occasion of exposing the opening (O), the welded bead (4) remains in place around the edge of the opening and separates from the rest of the welding layer (1) and from the adhesive layer (3), which adhesive layer is thus uncovered over an area (7) and makes it possible, by pressing again against the bead (4), to seal the container (C) again.

Abstract: A package is provided with a lid and container that are heat sealed together. A multi-ply sheet material is provided for being thermoformed to define the container which has a tapering wall and bulge-resistant bottom end. Prior to thermoforming the container from the sheet, the sheet is heated with oval pads on a plurality of plates which are arranged in a configuration to facilitate control of the sheet temperature. A plug is used in the thermoforming process to contact the sheet and position the sheet within a die. A lid sheet is heat sealed to the container sheet over the thermoformed containers so as to produce a pair of spaced-apart, annular bead heat seals. The package is completed by severing the sealed-together sheets at the periphery of the container with a punch and die set that produces and clean, smooth cut surface.