EP0967160A1 - Sealing membrane with a pressure relief valve - Google Patents

Sealing membrane with a pressure relief valve Download PDF

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Publication number
EP0967160A1
EP0967160A1 EP98810578A EP98810578A EP0967160A1 EP 0967160 A1 EP0967160 A1 EP 0967160A1 EP 98810578 A EP98810578 A EP 98810578A EP 98810578 A EP98810578 A EP 98810578A EP 0967160 A1 EP0967160 A1 EP 0967160A1
Authority
EP
European Patent Office
Prior art keywords
film
openings
sealing membrane
outer film
inner film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98810578A
Other languages
German (de)
French (fr)
Other versions
EP0967160B1 (en
Inventor
Claude Marbler
Jean-Paul Boudinet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3A Composites International AG
Original Assignee
Alusuisse Lonza Services Ltd
Alusuisse Technology and Management Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to AT98810578T priority Critical patent/ATE238206T1/en
Application filed by Alusuisse Lonza Services Ltd, Alusuisse Technology and Management Ltd filed Critical Alusuisse Lonza Services Ltd
Priority to ES98810578T priority patent/ES2193501T3/en
Priority to DK98810578T priority patent/DK0967160T3/en
Priority to EP98810578A priority patent/EP0967160B1/en
Priority to DE59808070T priority patent/DE59808070D1/en
Priority to US09/328,426 priority patent/US6182850B1/en
Priority to CA002276120A priority patent/CA2276120A1/en
Priority to BRPI9902625-2A priority patent/BR9902625B1/en
Publication of EP0967160A1 publication Critical patent/EP0967160A1/en
Application granted granted Critical
Publication of EP0967160B1 publication Critical patent/EP0967160B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322—Composite web or sheet

Definitions

  • the present invention relates to a closure membrane for containers containing an outer film and an inner film and a connecting layer arranged between the two films and a sealed seam zone.
  • Sealing membranes can, for example, be papers or foils from metals or plastics or composite films from several identical or different Materials to be in the range of metals, plastics and papers.
  • Task of the sealing membrane is to seal the container tightly to prevent ingredients leak or substances can get into the container from the outside.
  • EP-B 0 156 404 is on a container a pressure equalization opening attached after the heat treatment by means of a is hermetically sealed by heat-fusible polymer compound.
  • This embodiment however, there is the disadvantage that the fusible polymer compound counteracts Abrasion is arranged unprotected in an exposed area and the pressure compensation opening creates a direct connection between the container interior and the surroundings.
  • the object of the present invention is a closure membrane for containers or bags to propose, which makes it possible with a sealing or other closing process to close a container or bag and without significant pressure on the to carry out a heat treatment on the covered container or bag, the parts, which create the valve effect are protected against pre-mechanical influences.
  • the outer film can be a mono film or a film composite, with a sealing membrane the outer film points towards the outside.
  • the inner film can be a mono film or be a film composite, with the inner film on a sealing membrane points towards the inside of the container.
  • thermoplastics for example the series of polyolefins, such as polyethylenes or polypropylene, the polyester such as polyalkylene terephthalate and in particular Polyethylene terephthalate, polyvinyl chloride, polycarbonates or polyamides.
  • Other materials in foil form, for the inner as well as the outer foil are cellophane, metal foils, like aluminum or Steel foils or papers, such as coated or impregnated papers. It can also composite films or composite films made of different materials, such as metal foils and Plastic films, plastic films and paper or paper, plastic films and metal foils be applied.
  • thermoplastics also includes co-extruded polyethylene or cast Polypropylene. These plastic films are sealable.
  • the sealable plastic films can also form a composite or a composite film with other materials.
  • the co-extruded polyethylene or the cast polypropylene on a Carrier film may be arranged.
  • Monofilms or composite foils made from the Series of the thermoplastic materials mentioned are used. It is also possible to achieve the sealability of the sealing membrane by using the Surface layer on the inner film a sealing wax or a sealable thermoplastic Plastic film is arranged. To ensure the sealability of aluminum foils, Reaching paper or cellophane can also be achieved, for example, with a co-extruded plastic film be laminated on.
  • outer foils are foils containing or consisting of foil composites from polyesters, polyolefins, such as polypropylenes or polyethylenes, polyamides, Cellophane, aluminum foils and papers.
  • inner foils are foils containing and consisting of foil composites from polyesters, polyolefins, such as polypropylenes or polyethylenes, polyamides, Cellophane, aluminum foils and papers.
  • polyolefins such as polypropylenes or polyethylenes
  • polyamides such as polyamides, Cellophane
  • aluminum foils and papers Other examples are sealable films resp. Cast polypropylene or co-extruded polyethylene films.
  • the outer film can be printed, printed, graphically Design, embossing, etc.
  • a print can be made on the outside applied print or it can be - with transparent or translucent on the outside Films or composite films - a reverse printing or a combination of printing and Counter pressure.
  • Preferred sealing layers are foils respectively.
  • the outer and / or the inner film can occasionally have a barrier layer against the passage of gases and vapors, such as moisture, active and aromatic substances, air, oxygen, etc. contain.
  • Barrier layers can, for example, films made of EVOH, containing acrylonitrile copolymer Foils or from thin deposited in vacuum, i.e. 5 to 500 nanometers thick, ceramic layers, for example containing silicon and / or aluminum oxides ("chemical” or "physical vapor deposition”) etc.
  • connection layer is arranged between the inner and outer film.
  • the connection layer is advantageous an adhesive based on water-based adhesives, of solvent-based adhesives, of solvent-free adhesives or a single or Two-component adhesives or are a laminating adhesive or an adhesion promoter.
  • the adhesives can e.g. Starch, protein, casein glues, cellulose ethers and cellulose esters, such as methyl cellulose or nitrocellulose, natural rubber, synthetic rubber, polyethylene, Ethylene-vinyl acetate copolymers, polypropylene, polyvinyl esters, such as polyvinyl acetates, Polyvinyl chloride homopolymers or copolymers, such as vinyl chloride and vinyl acetate or vinyl chloride and methacrylic acid ester polymers, polyvinyl ether, polyvinyl pyrrolidone, Polystyrene, polyamides, polyesters, polyurethanes, polyisocyanates, epoxy resins, phenolic resins, Resorcinol resins such as resorcinol-formaldehyde resins and resorcinol-phenol-formaldehyde resins, Urea resins, melamine-formaldehyde resins and non-reactive resins, such as
  • the adhesives can also contain plasticizers.
  • the adhesives can be solvent-free be or can be solvents, for example gasoline, toluene, xylene, methylene chloride, Trichlorethylene, trichloroethane, ethyl acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone or contain cyclohexanone. It is also possible to use water-based or water-soluble adhesives to use.
  • the adhesives can also contain fillers, such as silicas, Chalk, light and heavy spar or fibrous materials.
  • Different adhesive systems can be used. For example without chemical reaction setting adhesives or solvent-free adhesive systems, in shape of hot melt adhesives or adhesive plastisols. It is also possible to find adhesive solutions whose Escape solvent before bonding, use contact adhesives or pressure sensitive adhesives. It is also possible to use glue solutions, their solvents during the gluing evaporate, use or aqueous starch and dextrin glues or other aqueous Adhesive solutions. Then aqueous dispersions of polymeric compounds, such as dispersion adhesives, to call. Reaction adhesives can also be used, such as polymerization adhesives, to which the two-component polymerization adhesives and include the one-part polymerization adhesives.
  • Polyaddition adhesives like reactive polyurethane adhesives, and finally polycondensation adhesives, such as polymethylol compounds, silicone adhesives or polyimides and polybezimidazoles to be named.
  • Other adhesives are starch and dextrin adhesives, polyvinyl acetate dispersion adhesives, modified starch adhesives or stabilized with casein Copolymer dispersions or rubber latices or polyacrylic ester solutions or polyurethane adhesives.
  • the adhesive layer can also be an extrusion layer made of polymers, act as from polyolefins, polyamides or polyesters.
  • Suitable adhesion promoters are, for example, vinyl chloride copolymers, Vinyl chloride-vinyl acetate copolymers, polymerizable polyesters, vinyl pyridine polymers, vinyl pyridine polymers in combination with epoxy resins, butadiene-acrylonitrile-methacrylic acid copolymers, Phenolic resins, rubber derivatives, acrylic resins, acrylic resins with phenol or Epoxy resins, or organosilicon compounds, such as organosilanes. To be favoured the organosilanes.
  • Examples include trialkoxysilanes with an amino functional group, trialkoxysilanes with epoxy functional group, trialkoxysilanes with ester functional group, trialkoxysilanes with aliphatic functional group, trialkoxysilanes with glycidoxy functional group, Trialkoxysilanes with methacryloxy functional group, and mixtures thereof.
  • organosilanes are -aminoprophyltriethoxysilane and N-b- (aminoithyl) -g-aminopropyltrimethoxysilane, g- (3,4-epoxycyclohexy) ethyltrimethoxysilane, g-glycidoxypropyltrimethoxysilane, and g-methacryloxypropyltrimethoxysilane.
  • the adhesive or adhesion promoter is preferably used as the connecting layer in an amount of 1.4 to 12 g / m2 applied.
  • the amount of adhesive is particularly preferably or Adhesion promoter from 4 to 7 g / m2.
  • the heat-softening material can, for example, be a lacquer, such as a heat-softening material Paint, be. Other examples are hotmelts, waxes and paraffins.
  • the softening and The melting point of the materials depends on the intended heat treatment of the container and can, for example, at a temperature in the range of 60 ° C. up to 130 ° C. At these temperatures, the material softening in heat is said to are in a plastic or viscous to molten state. E.g. Sterilization process are usually carried out at 121 ° C, so softening or Melting the material a few degrees, e.g. 0.1 to 5 ° C or immediately before or at this Temperature must occur.
  • the sealing membrane each has at least one opening both in the outer film and in the inner film.
  • This opening can be of any cross section, ie round, oval, polygonal, etc.
  • the openings can also be incisions, punctures or perforations.
  • the size of an opening in the outer film can have, for example, up to 0.2 mm, preferably from 0.02 to 0.2 mm and in particular 0.1 to 0.2 mm, diameter or diagonal length.
  • the size of an opening in the inner film can have, for example, up to 0.5 mm, preferably from 0.05 to 0.5 mm and in particular 0.20 to 0.5 mm, in diameter or diagonal length. Round openings with the stated diameters are preferred .
  • Two or more, such as three, four, five, six, seven, eight, nine, etc., openings can also each be arranged in the outer film and / or inner film. In the case of a plurality of openings, their diameter can be chosen to be smaller.
  • the total area of the openings in the outer film is advantageously from 0.0013 mm 2 to 0.13 mm 2 .
  • the total area of the openings in the inner film is advantageously from 0.008 mm 2 to 0.8 mm 2 .
  • the openings in the outer film and the inner film lie with respect to one Top view of the closure membrane according to the invention, not one above the other, but are horizontally offset from each other, arranged.
  • the present sealing membrane can be manufactured as a continuous material or on a roll become.
  • the continuous material or the roll goods can be processed into bags.
  • the continuous material or the roll goods can also be used to cover e.g. mug-or bowl-shaped containers in a production process continuously on the to be covered Containers are sealed and the containers can be separated using separating seams.
  • the present sealing membrane can also be produced as a continuous material or in rolls and the sealing membranes, for example by punching out and the like become.
  • the isolated sealing membranes can be sealed onto the containers. It is also possible to manufacture the sealing membranes individually and individually Seal the container.
  • the preferred continuous or roll goods can be produced by making the openings the outer film and the inner film, for example by rollers, stamps or dies, the Carrying needles, cutting tools or perforating tools through punching tools high energy radiation, such as laser beams or electron beams, heat or High frequency heating, or by chemical means by selective dissolution using a solvent or by an etching process.
  • the outer films and the inner films are over the connection layer laminated against each other. Thereby remain in the area of the provided openings a space free of the materials, such as the adhesives of the connection layer. In this intermediate layer-free space becomes the material that softens when exposed to heat brought in.
  • the sequence of the application of the connection layer and the one softening when warm Materials can also be exchanged.
  • connection layer can, for example by spreading, spraying, rolling, knife coating or printing on the adhesive or Adhesion promoter by means of a printing process, such as high pressure, flexographic printing, planographic printing, Offset printing, gravure printing, screen printing, screen printing, etc. take place.
  • a printing process such as high pressure, flexographic printing, planographic printing, Offset printing, gravure printing, screen printing, screen printing, etc. take place.
  • Applying the heat softening material as described preferably also by means of one of the mentioned printing process.
  • the printing process is advantageously carried out in repeat printing, i.e. the feed of the material to be printed is e.g. through a photocell or the like controlled, which ensures that the position of the printed images to each other is always the same.
  • the outer film can be printed and / or reverse printed in a printing press and any print samples, such as advertising prints, product information, illustrations, Fonts, patterns, graphic designs etc. applied e.g. by means of a needle roller or die, which can be arranged in the printing press, become the openings attached to the outer film in the form of needle punctures the printing press the connection layer and the heat softening material, such as a printing ink, as a print pattern, applied to the outer film.
  • the inner film at most is provided with a sealing layer on the side that later faces the container also provided with the openings. This can also be done using a needle roller or - die respectively.
  • the outer film and the inner film are then laminated against each other. All operations can be carried out simultaneously in one device. The In particular, the process is carried out continuously and a composite film is therefore formed as roll or continuous goods.
  • the filled containers are, for example, continuously used covered with the composite film and over the edge of the container the composite film is in the repeat sealed the container. This ensures that each lid - within of the Sealed seam - openings in the outer and inner foil and a space in between Has heat softening material.
  • the sealing membrane can Form part of a wall or at least one or all of the bag walls.
  • the inventive Sealing membranes can be used, for example, for closing and covering Containers such as cups, bottles, pots, tapestries, bowls made of plastic, glass, ceramics Metal, etc., glasses, or for forming or closing bags, soft-foil bags, Stand-up pouches etc. made of plastic films or film composites e.g. made of plastics or made of plastics and metal foils and / or paper.
  • the containers can with liquid to solid food, beverages or feed etc., such as drinks, Dairy products, ready meals, animal feed etc., filled, can be used.
  • the container it is also possible to fill fermenting contents into a container and the container to be covered with the sealing membrane according to the invention.
  • the during fermentation The resulting gases can be controlled by the internal pressure in some cases Formation of the openings in the sealing membrane - emerge from the container. With A heat treatment can interrupt the fermentation and close the sealing membrane become. Thereafter, no germs, such as yeast cultures, in the Container.
  • FIG 1 the container 10 with the intended sealing area 13 - - the shoulder of the container 10 - and the closure membrane 11 shown.
  • the sealing membrane 11 has one sealing layer 14 directed against the container.
  • the closure membrane 11 has the Inner film 15 and the outer film 16.
  • the two films 15 and 16 are by the Link layer 17, e.g. an adhesive layer, bonded together.
  • the Connection layer 17 surrounds a central area, the connection layer-free space 21, completely. Fitting to, respectively. printed on, the outer layer 16 is that heat-softening material 18.
  • the heat-softening material points against the inner film 15 Material 18 a gap, respectively. is not adherent to the inner film 15.
  • On the inner film 15 an opening 19 is provided.
  • An opening 20 is provided on the outer film 16
  • the openings 19 and 20 are advantageously arranged offset from one another.
  • the figure 1 shows a section through the closure membrane 11 along a line A-A in figure 4 represents.
  • FIG. 2 shows the lidded container 10, 11 with the contents 12.
  • the contents can for example a food or feed preparation.
  • the sealing membrane 11 is tightly connected to the container 10.
  • the covered container 10, 11 is e.g. a heat treatment, such as pasteurization, exposed to sterilization or surgery.
  • the one located above the content 12 Fluid such as the gas 23 expanding under the action of heat and any from the Contents 12 escaping gaseous components and also steam, can pass through the opening 19 in the inner film in the direction of the arrow and can become softened by heat Material 18 or past it, clear a path and through opening 20 in emerge from the outer film into the surrounding atmosphere.
  • FIG 3 shows the situation during the subsequent cooling of the container.
  • Tendency is ambient air in the covered container 10, 11 and in particular in the room where the gas 23 is drawn back.
  • the heat softening material 18 which is in a liquid to pasty state due to the effect of heat thereby through the opening 19 on the inner film 15 and hardened by cooling at the same time.
  • the heat softening material 18 reliably closes the opening 19.
  • it softens when it is warm and then sticks again when it cools down hardening material 18 the opening 20 in the outer film and can the inner and Outer film 15, 16 glue each other.
  • the closure membrane according to the invention accordingly has Valve effect in that gaseous components from the Exit the container, but when cooling down, a backflow of e.g. Gases is prevented. With this e.g. no more germs get into the container.
  • Figure 4 shows a top view of a closure membrane 11 along a section line B-B in Figure 1.
  • the closure membrane has approximately the outline of the container below and is with a retaining tab 22 for later easy removal of the closure membrane 11 provided by the container 10.
  • the top view shows the connection layer 17, e.g. an adhesive that separates the inner and outer film from each other and is resistant to delamination connects.
  • the connection layer 17 surrounds a space free of connection layers 21, which in turn with the heat-softening material 18, such as one Lacquer, hot melt, paraffin, wax etc., is filled.
  • the opening 19 in the inner film and the Opening 20 in the outer film are preferably not one above the other, but are horizontal Level offset against each other. In the present example, the openings are 19, 20 not covered by the heat-softening material 18 but only surrounded.
  • the Figures 1, 2 and 3 show the container 10 and closure membrane 11 along the section line A-A.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Safety Valves (AREA)
  • Laminated Bodies (AREA)
  • External Artificial Organs (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

The membrane (11) has an inner and an outer film (15,16), and a connection layer (17) with a seal seam zone (13). The seal seam zone contains an intermediate space (21) without connection layer, and outer and inner films having an opening (20,19) within a space containing a material (18), which softens when heated. The openings of outer and inner films are connected for a fluid flow (23). When the membrane is subjected to heat, the openings in the films are sealed due to softening of the material. The cover is for bottles, jars, goblets, bowls, of plastic, ceramics, glass, metal, and for bags.

Description

Vorliegende Erfindung betrifft eine Verschlussmembrane für Behälter enthaltend eine Aussenfolie und eine Innenfolie und eine zwischen den beiden Folien angeordneten Verbindungsschicht und eine Siegelnahtzone.The present invention relates to a closure membrane for containers containing an outer film and an inner film and a connecting layer arranged between the two films and a sealed seam zone.

Es ist bekannt, Stoffe, beispielsweise Nahrungsmittel, in Behälter abzufüllen und becherartige Behälter mit einem Deckel, wie einer Verschlussmembrane, oder Beutel durch falten und siegeln zu verschliessen. Verschlussmembranen können beispielsweise Papiere oder Folien aus Metallen oder Kunststoffen oder Verbundfolien aus mehreren gleichen oder verschiedenen Materialien der Reihe der Metalle, Kunststoffe und Papiere sein. Aufgabe der Verschlussmembrane ist es, den Behälters dicht zu verschliessen, um zu Verhindern, dass Inhaltsstoffe austreten oder Stoffe von Aussen in den Behälter gelangen können. Es gibt Fälle, in denen ein vollständig dichtender Verschluss des Behälters mit dem Anbringen der Verschlussmembran nicht erwünscht ist und zumindest ein Druckausgleich zwischen Behälterinnenraum und der den Behälter umgebenden Atmosphäre möglich sein muss. Dies betrifft insbesondere Fälle in denen das Füllgut in den Behälter abgefüllt, der Behälter bedeckelt und anschliessend der befüllte und bedeckelte Behälter einer Wärmebehandlung, wie beispielsweise Pasteurisieren, Sterilisieren oder Uperisieren, ausgesetzt wird. Es ist zu vermeiden, dass dabei im Behälterinnern ein Überdruck entsteht, der die Verschlussmembrane reissen oder aufplatzen lässt. Dies lässt sich dadurch vermeiden, dass die Verschlussmembrane nach dem Befüllen des Behälters nur teilweise aufgesiegelt wird und entweichende Stoffe zwischen Behälterrand und Verschlussmembrane im ungesiegelten Bereich entweichen können. Anschlisessend wird in einem weiteren Arbeitsgang die Verschlussmembrane vollständig dichtend aufgesiegelt.It is known to fill substances, for example foodstuffs, into containers and cup-like ones Fold a container with a lid, such as a sealing membrane, or bag through and seal to close. Sealing membranes can, for example, be papers or foils from metals or plastics or composite films from several identical or different Materials to be in the range of metals, plastics and papers. Task of the sealing membrane is to seal the container tightly to prevent ingredients leak or substances can get into the container from the outside. There are cases in which a completely sealed closure of the container with the attachment of the closure membrane is not desired and at least a pressure equalization between the interior of the container and the atmosphere surrounding the container must be possible. this concerns in particular cases in which the contents are filled into the container, the container is covered and then the filled and covered container of a heat treatment, such as Pasteurization, sterilization or upperation. It is to be avoided that this creates an overpressure inside the container, which tears the sealing membrane or bursts open. This can be avoided by having the sealing membrane after the Filling the container is only partially sealed and escaping substances between The edge of the container and the sealing membrane can escape in the unsealed area. Subsequent the sealing membrane becomes completely sealed in a further operation sealed up.

In eineranderen Ausführungsform, beschrieben in der EP-B 0 156 404, wird an einem Behälter eine Druckausgleichsöffnung angebracht, die nach der Wärmebehandlung mittels einer durch Wärme schmelzbaren Polymerverbindung hermetisch verschlossen wird. Dieser Ausführungsform haftet jedoch der Nachteil an, dass die schmelzbare Polymerverbindung gegen Abrasion ungeschützt an exponierter Stelle angeordnet ist und die Druckausgleichsöffnung eine unmittelbare Verbindung von Behälterinnenraum und Umgebung schafft.In another embodiment, described in EP-B 0 156 404, is on a container a pressure equalization opening attached after the heat treatment by means of a is hermetically sealed by heat-fusible polymer compound. This embodiment however, there is the disadvantage that the fusible polymer compound counteracts Abrasion is arranged unprotected in an exposed area and the pressure compensation opening creates a direct connection between the container interior and the surroundings.

Aufgabe vorliegender Erfindung ist es, eine Verschlussmembrane für Behälter oder Beutel vorzuschlagen, welche es ermöglicht, mit einem Siegel- oder anderweitigen Verschliessvorgang einen Behälter oder Beutel zu verschliessen und ohne wesentliche Druckbelastung des bedeckelten Behälters oder Beutels eine Wärmebehandlung durchzuführen, wobei die Teile, welche die Ventilwirkung erzeugen vormechanischen Einflüssen geschützt angeordnet sind.The object of the present invention is a closure membrane for containers or bags to propose, which makes it possible with a sealing or other closing process to close a container or bag and without significant pressure on the to carry out a heat treatment on the covered container or bag, the parts, which create the valve effect are protected against pre-mechanical influences.

Erfindungsgemäss wird das dadurch erreicht, dass innerhalb der Siegelnahtzone, zwischen der Aussenfolie und der Innenfolie, wenigstens ein verbindungsschichtfreier Zwischenraum angeordnet ist und innerhalb des verbindungsschichtfreien Zwischenraumes die Aussenfolie wenigstens eine Öffnung aufweist und die Innenfolie wenigstens eine Öffnung aufweist und im verbindungsschichtfreien Zwischenraum, zwischen der Aussenfolie und der Innenfolie, ein Vorrat eines bei Wärme erweichenden Materials angeordnet ist, wobei die Öffnungen der Innenfolie und die Öffnungen der Aussenfolie für den Durchtritt eines Fluids in Verbindung stehen und die Öffnungen bei einer Wärmebeaufschlagung der Verschlussmembrane durch ein Erweichen des bei Wärme erweichenden Materials verschlossen werden.This is achieved according to the invention in that within the sealing seam zone, between the outer film and the inner film, at least one intermediate layer-free space is arranged and the outer film within the connection layer-free space has at least one opening and the inner film has at least one opening and in the intermediate layer-free space between the outer film and the inner film Stock of a heat-softening material is arranged, the openings of the Inner film and the openings of the outer film for the passage of a fluid in connection stand and through the openings when heat is applied to the sealing membrane a softening of the heat-softening material can be closed.

Die Aussenfolie kann eine Monofolie oder ein Folienverbund sein, wobei an einer Verschussmembran die Aussenfolie gegen die Aussenseite weist. Die Innenfolie kann eine Monofolie oder ein Folienverbund sein, wobei an einer Verschlussmembrane die Innenfolie gegen das Innere des Behälters weist.The outer film can be a mono film or a film composite, with a sealing membrane the outer film points towards the outside. The inner film can be a mono film or be a film composite, with the inner film on a sealing membrane points towards the inside of the container.

Für die Innen- als auch die Aussenfolie können verschiedene Materialien zur Anwendung gelangen. Beispielsweise können Monofolien oder Folienverbunde oder Verbundfolien enthaltend thermoplastischen Kunststoffen, beispielsweise der Reihe der Polyolefine, wie Polyethylene oder Polypropylene, der Polyester, wie Polyalkylenterephthalate und insbesondere Polyethylenterephtalat, Polyvinylchlorid, Polycarbonate oder Polyamide. Weitere Materialien in Folienform, für die Innen- als auch die Aussenfolie, sind Zellglas, Metallfolien, wie Aluminium-oder Stahlfolien oder Papiere, wie beschichtete oder imprägnierte Papiere. Es können auch Folienverbunde oder Verbundfolien aus verschiedenen Materialien, wie Metallfolien und Kunstofffolien, Kunstofffolien und Papier oder Papier, Kunsstofffolien und Metallfolien angewendet werden. Für die Aussenfolie und insbesondere für die Innenfolie, bieten sich aus der Reihe der thermoplastischen Kunststoffe auch coextrudierte Polyethylene oder gegossenes Polypropylen an. Diese Kunststofffolien sind siegelbar. Die siegelbaren Kunststofffolien können auch mit weiteren Materialien einen Verbund oder eine Verbundfolie bilden. Beispielsweise können das coextrudierte Polyethylen oder das gegossene Polypropylen auf einer Trägerfolie angeordnet sein. Als Trägerfolien können Monofolien oder Verbundfolien aus der Reihe der genannten thermoplastischen Kunststoffen angewendet werden. Es ist auch möglich die Siegelfähigkeit der Verschlussmembran dadurch zu erreichen, dass als an der Oberfläche liegende Schicht auf der Innenfolie ein Siegellack oder eine siegelbare thermoplastische Kunststofffolie angeordnet ist. Um die Siegelfähigkeit von Aluminiumfolien, Papier oder Zellglas zu erreichen, kann beispielsweise auch eine coextrudierte Kunststofffolie auflaminiert werden.Different materials can be used for the inner and outer film reach. For example, monofilms or film composites or composite films containing thermoplastics, for example the series of polyolefins, such as polyethylenes or polypropylene, the polyester such as polyalkylene terephthalate and in particular Polyethylene terephthalate, polyvinyl chloride, polycarbonates or polyamides. Other materials in foil form, for the inner as well as the outer foil, are cellophane, metal foils, like aluminum or Steel foils or papers, such as coated or impregnated papers. It can also composite films or composite films made of different materials, such as metal foils and Plastic films, plastic films and paper or paper, plastic films and metal foils be applied. For the outer film and especially for the inner film, offer themselves The range of thermoplastics also includes co-extruded polyethylene or cast Polypropylene. These plastic films are sealable. The sealable plastic films can also form a composite or a composite film with other materials. For example can the co-extruded polyethylene or the cast polypropylene on a Carrier film may be arranged. Monofilms or composite foils made from the Series of the thermoplastic materials mentioned are used. It is also possible to achieve the sealability of the sealing membrane by using the Surface layer on the inner film a sealing wax or a sealable thermoplastic Plastic film is arranged. To ensure the sealability of aluminum foils, Reaching paper or cellophane can also be achieved, for example, with a co-extruded plastic film be laminated on.

Bevorzugte Beispiele von Aussenfolien sind Folien und Folienverbunde enthaltend oder bestehend aus Polyestern, Polyolefinen, wie Polypropylenen oder Polyethylenen, Polyamiden, Zellglas (Cellophan), Aluminiumfolien und Papieren.Preferred examples of outer foils are foils containing or consisting of foil composites from polyesters, polyolefins, such as polypropylenes or polyethylenes, polyamides, Cellophane, aluminum foils and papers.

Bevorzugte Beispiele von Innenfolien sind Folien und Folienverbunde enthaltend oder bestehend aus Polyestern, Polyolefinen, wie Polypropylenen oder Polyethylenen, Polyamiden, Zellglas (Cellophan), Aluminiumfolien und Papiere. Weitere Beispiele sind siegelbare Folien resp. Filme aus gegossenem (cast) Polypropylen oder coextrudierten Polyethylenen.Preferred examples of inner foils are foils containing and consisting of foil composites from polyesters, polyolefins, such as polypropylenes or polyethylenes, polyamides, Cellophane, aluminum foils and papers. Other examples are sealable films resp. Cast polypropylene or co-extruded polyethylene films.

Insbesondere die Aussenfolie kann mit einem Aufdruck, einem Druckbild, einer graphischen Gestaltung, einer Prägung usw. ausgestaltet sein. Ein Druck kann ein auf der Aussenseite aufgebrachter Druck sein oder es kann -- bei aussenliegenden transparenten oder durchscheinenden Folien oder Verbundfolien -- ein Konterdruck oder eine Kombination von Druck und Konterdruck sein.In particular, the outer film can be printed, printed, graphically Design, embossing, etc. A print can be made on the outside applied print or it can be - with transparent or translucent on the outside Films or composite films - a reverse printing or a combination of printing and Counter pressure.

Bevorzugte Siegelschichten sind Folien resp. Filme aus gegossenem (cast) Polypropylen oder coextrudierten Polyethylenen, die auf die Innenfolie laminiert sind oder es sind Folien oder Filme coextrudierte Kunststoffe auf Aluminium, Papier oder Zellglas oder es sind Siegellacke.Preferred sealing layers are foils respectively. Cast polypropylene or cast films coextruded polyethylenes that are laminated to the inner film or are films or Films co-extruded plastics on aluminum, paper or cellophane or they are sealing waxes.

Die Aussen- und/oder die Innenfolie können fallweise eine Sperrschicht gegen den Durchtritt von Gasen und Dämpfen, wie Feuchtigkeit, Wirk- und Aromastoffe, Luft, Sauerstoff usw. enthalten. Sperrschichten können beispielsweise Folien aus EVOH, Acrylnitrilcopolymerhaltige Folien oder aus im Vakuum abgeschiedenen dünnen, d.h. 5 bis 500 Nanometer dicken, keramischen Schichten, beispielsweise enthaltend Silicium- und/oder Aluminiumoxide ("chemical" oder "physical vapor deposition") usw. sein.The outer and / or the inner film can occasionally have a barrier layer against the passage of gases and vapors, such as moisture, active and aromatic substances, air, oxygen, etc. contain. Barrier layers can, for example, films made of EVOH, containing acrylonitrile copolymer Foils or from thin deposited in vacuum, i.e. 5 to 500 nanometers thick, ceramic layers, for example containing silicon and / or aluminum oxides ("chemical" or "physical vapor deposition") etc.

Zwischen der Innen- und Aussenfolie ist eine Verbindungsschicht angeordnet Die Verbindungssschicht ist vorteilhaft ein Klebstoff auf der Basis von wasserbasierenden Klebstoffen, von lösemittelhaltigen Klebstoffen, von lösemittelfreien Klebstoffen oder ein Ein-oder Zweikomponentenklebstoffen oder sind ein Kaschierkleber oder ein Haftvermittler.A connection layer is arranged between the inner and outer film. The connection layer is advantageous an adhesive based on water-based adhesives, of solvent-based adhesives, of solvent-free adhesives or a single or Two-component adhesives or are a laminating adhesive or an adhesion promoter.

Die Klebstoffe können z.B. Stärke, Eiweiss, Caseinleime, Celluloseäther und Celluloseester, wie Methylcellulose oder Nitrocellulose, Naturkautschuk, Synthesekautschuk, Polyäthylen, Äthylen-Vinylacetat-Copolymerisate, Polypropylen, Polyvinylester, wie Polyvinylacetate, Polyvinylchlorid-Homopolymerisate oder Copolymerisate, wie Vinylchlorid und Vinlyacetat oder Vinylchlorid und Methacrylsäureester-Polymerisate, Polyvinyläther Polyvinylpyrrolidon, Polystyrol, Polyamide, Polyester, Polyurethane, Polyisocyanate, Epoxidharze, Phenolharze, Resorcinharze, wie Resorcin-Formaldehydharze und Resorcin-Phenol-Formaldehydharze, Harnstoffharze, Melamin-Formaldehydharze und nichtreaktive Harze, wie Kolophoniumharze, Tallharze, Kohlenwasserstoffharze, Carbamidsäureester-Harze oder Cyclohexanonharze sein oder von diesen Stoffen enthalten.The adhesives can e.g. Starch, protein, casein glues, cellulose ethers and cellulose esters, such as methyl cellulose or nitrocellulose, natural rubber, synthetic rubber, polyethylene, Ethylene-vinyl acetate copolymers, polypropylene, polyvinyl esters, such as polyvinyl acetates, Polyvinyl chloride homopolymers or copolymers, such as vinyl chloride and vinyl acetate or vinyl chloride and methacrylic acid ester polymers, polyvinyl ether, polyvinyl pyrrolidone, Polystyrene, polyamides, polyesters, polyurethanes, polyisocyanates, epoxy resins, phenolic resins, Resorcinol resins such as resorcinol-formaldehyde resins and resorcinol-phenol-formaldehyde resins, Urea resins, melamine-formaldehyde resins and non-reactive resins, such as rosin resins, Tall resins, hydrocarbon resins, carbamic acid ester resins or cyclohexanone resins be or contain of these substances.

Die Klebstoffe können auch Weichmacher enthalten. Die Klebstoffe können lösungsmittelfrei sein oder können Lösungsmittel, beispielsweise Benzin, Toluol, Xylol, Methylenchlorid, Trichloräthylen, Trichloräthan, Essigester, Aceton Methyläthylketon, Methylisobutylketon oder Cyclohexanon enthalten. Es ist auch möglich, wasserhaltige oder wasserlösliche Klebstoffe zu verwenden. Die Klebstoffe können ferner Füllstoffe enthalten, wie Kieselsäuren, Kreiden, Leicht- und Schwerspat oder faserige Materialien.The adhesives can also contain plasticizers. The adhesives can be solvent-free be or can be solvents, for example gasoline, toluene, xylene, methylene chloride, Trichlorethylene, trichloroethane, ethyl acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone or contain cyclohexanone. It is also possible to use water-based or water-soluble adhesives to use. The adhesives can also contain fillers, such as silicas, Chalk, light and heavy spar or fibrous materials.

Es können verschiedene Klebstoffsysteme zur Anwendung gelangen. Beispielsweise ohne chemische Reaktion abbindende Klebstoffe oder lösungsmittelfreie Klebstoffsysteme, in Form von Schmelzklebstoffen oder Klebeplastisolen. Es ist auch möglich, Klebstofflösungen, deren Lösungsmittel vor der Klebung entweichen, Kontaktklebstoffe oder Haftklebstoffe zu verwenden. Es ist auch möglich, Klebstofflösungen, deren Lösungsmittel während der Klebung verdunsten, einzusetzten oder wässrige Stärke- und Dextrinleime oder sonstige wässrige Klebstofflösungen. Dann sind wässrige Dispersionen von polymeren Verbindungen, wie Dispersionaklebstoffe, zu nennen. Auch zur Anwendung gelangen können Reaktionsklebstoffe, wie Polymerisationsklebstoffe, zu denen die zweikomponentigen Polymerisationsklebstoffe und die einkomponentigen Polymerisationsklebstoffe gehören. Ferner können Polyadditionsklebstoffe, wie reaktive Polyurethan-Klebstoffe, und schliesslich Polykondensationsklebstoffe, wie Polymethylol-Verbindungen, Silicon-Klebstoffe oder Polyimide und Polybezimidazole genannt werden. Weitere Klebstoffe sind Stärke- und Dextrinkklebstoffe, Polyvinylacetat-Dispersionsklebstoffe, modifizierte Stärkeklebstoffe oder mit Casein stabilisierte Copoylmerdispersionen oder Kautschuklatices oder Polyacrylesterlösungen oder Polyurethan-Klebstoffe. Bei der Klebstoffschicht kann sich auch um eine Extrusionsschicht aus Polymeren, wie aus Polyolefinen, Polyamiden oder Polyestern handeln.Different adhesive systems can be used. For example without chemical reaction setting adhesives or solvent-free adhesive systems, in shape of hot melt adhesives or adhesive plastisols. It is also possible to find adhesive solutions whose Escape solvent before bonding, use contact adhesives or pressure sensitive adhesives. It is also possible to use glue solutions, their solvents during the gluing evaporate, use or aqueous starch and dextrin glues or other aqueous Adhesive solutions. Then aqueous dispersions of polymeric compounds, such as dispersion adhesives, to call. Reaction adhesives can also be used, such as polymerization adhesives, to which the two-component polymerization adhesives and include the one-part polymerization adhesives. Polyaddition adhesives, like reactive polyurethane adhesives, and finally polycondensation adhesives, such as polymethylol compounds, silicone adhesives or polyimides and polybezimidazoles to be named. Other adhesives are starch and dextrin adhesives, polyvinyl acetate dispersion adhesives, modified starch adhesives or stabilized with casein Copolymer dispersions or rubber latices or polyacrylic ester solutions or polyurethane adhesives. The adhesive layer can also be an extrusion layer made of polymers, act as from polyolefins, polyamides or polyesters.

Geeignete Haftvermittler sind beispielsweise Vinylchlorid-Copolymerisate, Vinylchlorid-Vinylacetat-Copolymerisate, polymerisierbare Polyester, Vinylpyridin-Polymerisate, Vinylpyridin-Polymerisate in Kombination mit Epoxidharzen, Butadien-Acrylnitril-Methacrylsäure-Copolymerisate, Phenolharze, Kautschukderivate, Acrylharze, Acrylharze mit Phenol bzw. Epoxidharzen, oder siliciumorganische Verbindungen, wie Organosilane. Bevorzugt werden die Organosilane. Beispiele dafür sind Trialkoxysilane mit Aminofunktionsgruppe, Trialkoxysilane mit Epoxyfunktionsgruppe, Trialkoxysilane mit Esterfunktionsgruppe, Trialkoxysilane mit aliphatischer Funktionsgruppe, Trialkoxysilane mit Glycid-oxyfunktionsgruppe, Trialkoxysilane mit Methacryloxyfunktionsgruppe, sowie Gemische derselben. Beispiele solcher Organosilane sind -Aminoprophyltriethoxysilan und N-b-(Aminoithyl)-g-aminopropyltrimethoxysilan, g-(3,4-Epoxycyclohexy)-ethyltrimethoxysilan, g-Glycidoxypropyltrimethoxysilan, und g-Methacryloxypropyltrimethoxysilan.Suitable adhesion promoters are, for example, vinyl chloride copolymers, Vinyl chloride-vinyl acetate copolymers, polymerizable polyesters, vinyl pyridine polymers, vinyl pyridine polymers in combination with epoxy resins, butadiene-acrylonitrile-methacrylic acid copolymers, Phenolic resins, rubber derivatives, acrylic resins, acrylic resins with phenol or Epoxy resins, or organosilicon compounds, such as organosilanes. To be favoured the organosilanes. Examples include trialkoxysilanes with an amino functional group, trialkoxysilanes with epoxy functional group, trialkoxysilanes with ester functional group, trialkoxysilanes with aliphatic functional group, trialkoxysilanes with glycidoxy functional group, Trialkoxysilanes with methacryloxy functional group, and mixtures thereof. Examples such organosilanes are -aminoprophyltriethoxysilane and N-b- (aminoithyl) -g-aminopropyltrimethoxysilane, g- (3,4-epoxycyclohexy) ethyltrimethoxysilane, g-glycidoxypropyltrimethoxysilane, and g-methacryloxypropyltrimethoxysilane.

Als Verbindungsschicht wird der Klebstoff oder Haftvermittler bevorzugt in einer Menge von 1,4 bis 12 g/m2 angewendet. Besonders bevorzugt beträgt die Menge an Klebstoff oder Haftvermittler von 4 bis 7 g/m2.The adhesive or adhesion promoter is preferably used as the connecting layer in an amount of 1.4 to 12 g / m2 applied. The amount of adhesive is particularly preferably or Adhesion promoter from 4 to 7 g / m2.

Das bei Wärme erweichende Material kann beispielsweise ein Lack, wie ein wärmeerweichender Lack, sein. Weitere Beispiele sind Hotmelts, Wachse und Paraffine. Der Erweichungs-und Schmelzpunkt der Materialien richtet sich nach der vorgesehenen Wärmebehandlung des Behälters und kann beispielsweise bei einer Temperatur im Bereich von 60°C bis 130°C liegen. Bei diesen Temperaturen soll das bei Wärme erweichende Material in einem plastischen oder zähfliessenden bis schmelzflüssigen Zustand sich befinden. Z.B. Sterilisierverfahren werden in der Regel bei 121°C durchgeführt, so dass ein Erweichen oder Schmelzen des Materials einige Grade, z.B. 0,1 bis 5°C oder unmittelbar vor oder bei dieser Temperatur eintreten muss.The heat-softening material can, for example, be a lacquer, such as a heat-softening material Paint, be. Other examples are hotmelts, waxes and paraffins. The softening and The melting point of the materials depends on the intended heat treatment of the container and can, for example, at a temperature in the range of 60 ° C. up to 130 ° C. At these temperatures, the material softening in heat is said to are in a plastic or viscous to molten state. E.g. Sterilization process are usually carried out at 121 ° C, so softening or Melting the material a few degrees, e.g. 0.1 to 5 ° C or immediately before or at this Temperature must occur.

Die Verschlussmembrane weist sowohl in der Aussenfolie als auch in der Innenfolie je wenigstens eine Öffnung auf. Diese Öffnung kann an sich beliebigen Querschnittes, d.h. rund, oval, polygonal usw. sein. Die Öffnungen können auch Einschnitte, Einstiche oder Perforationen sein. Die Grösse einer Öffnung in der Aussenfolie kann beispielsweise bis zu 0,2 mm, bevorzugt von 0,02 bis 0,2 mm und insbesondere 0,1 bis 0,2 mm, Durchmesser oder Diagonalenlänge aufweisen. Die Grösse einer Öffnung in der Innenfolie kann beispielsweise bis zu 0,5 mm, bevorzugt von 0,05 bis 0,5 mm und insbesondere 0,20 bis 0,5 mm, Durchmesser oder Diagonalenlänge aufweisen.Bevorzugt sind runde Öffnungen mit den genannten Durchmessern. Es können auch zwei oder mehrere, wie drei, vier, fünf, sechs, sieben, acht, neun usw. Öffnungen jeweils in der Aussenfolie und/oder Innenfolie angeordnet sein. Bei einer Mehrzahl von Öffnungen kann entsprechend deren Durchmesser kleiner gewählt werden. Vorteilhaft ist die Gesamtfläche der Öffnungen in der Aussenfolie von 0,0013 mm2 bis 0,13 mm2. Vorteilhaft ist die Gesamtfläche der Öffnungen in der Innenfolie von 0,008 mm2 bis 0,8 mm2.The sealing membrane each has at least one opening both in the outer film and in the inner film. This opening can be of any cross section, ie round, oval, polygonal, etc. The openings can also be incisions, punctures or perforations. The size of an opening in the outer film can have, for example, up to 0.2 mm, preferably from 0.02 to 0.2 mm and in particular 0.1 to 0.2 mm, diameter or diagonal length. The size of an opening in the inner film can have, for example, up to 0.5 mm, preferably from 0.05 to 0.5 mm and in particular 0.20 to 0.5 mm, in diameter or diagonal length. Round openings with the stated diameters are preferred . Two or more, such as three, four, five, six, seven, eight, nine, etc., openings can also each be arranged in the outer film and / or inner film. In the case of a plurality of openings, their diameter can be chosen to be smaller. The total area of the openings in the outer film is advantageously from 0.0013 mm 2 to 0.13 mm 2 . The total area of the openings in the inner film is advantageously from 0.008 mm 2 to 0.8 mm 2 .

Insbesondere liegen die Öffnungen in der Aussenfolie und der Innenfolie, bezüglich einer Draufsicht auf die erfindungsgemässe Verschlussmembrane, nicht übereinander, sondern sind horizontal gegeneinander versetzt, angeordnet.In particular, the openings in the outer film and the inner film lie with respect to one Top view of the closure membrane according to the invention, not one above the other, but are horizontally offset from each other, arranged.

Die vorliegende Verschlussmembrane kann als Endlosmaterial oder Rollenware hergestellt werden. Das Endlosmaterial oder die Rollenware kann zu Beuteln verarbeitet werden. Dabei liegt zweckmässig auf einem Folienabschnitt für einen Beutel zumindest ein verbindungsschichtfreier Zwischenraum mit dem bei Wärme erweichenden Material und die Siegelnahtzone kann durch die Siegelnähte des Beutels oder durch Siegelnähte am Beutel gebildet sein. Das Endlosmaterial oder die Rollenware kann auch zur Bedeckelung von z.B. becher-oder schalenförmigen Behältern in einem Produktionsprozess fortlaufend auf die zu bedeckelnden Behälter aufgesiegelt werden und über Trennnähte können die Behälter vereinzelt werden. Die vorliegende Verschlussmembrane kann auch als Endlosmaterial oder Rollenware hergestellt und die Verschlussmembranen, beispielsweise durch Ausstanzen und dergl. vereinzelt werden. Die vereinzelten Verschlussmembranen können auf die Behälter aufgesiegelt werden. Es ist auch möglich, die Verschlussmembranen einzeln zu fertigen und einzeln auf Behälter aufzusiegeln.The present sealing membrane can be manufactured as a continuous material or on a roll become. The continuous material or the roll goods can be processed into bags. Here expediently lies on a film section for a bag at least one connection layer-free one Intermediate space with the material softening under heat and the sealing seam zone can be formed by the sealed seams of the bag or by sealed seams on the bag. The continuous material or the roll goods can also be used to cover e.g. mug-or bowl-shaped containers in a production process continuously on the to be covered Containers are sealed and the containers can be separated using separating seams. The present sealing membrane can also be produced as a continuous material or in rolls and the sealing membranes, for example by punching out and the like become. The isolated sealing membranes can be sealed onto the containers. It is also possible to manufacture the sealing membranes individually and individually Seal the container.

Die bevorzugte Endlos- oder Rollenware ist herstellbar durch Anbringen der Öffnungen, an der Aussenfolie und der Innenfolie, beispielsweise durch Walzen, Stempel oder Matrizen, die Nadeln, Schneidwerkzeuge oder Perforierwerkzeuge tragen, durch Stanzwerkzeuge, durch energiereiche Strahlung, wie Laserstrahlen oder Elektronenstrahlen, Wärme-oder Hochfrequenzheizung, oder auf chemischem Wege durch selektives Auflösen mittels eines Lösemittel oder durch ein Ätzverfahren. Die Aussenfolien und die Innenfolien werden über die Verbindungsschicht gegeneinander laminiert. Dabei bleiben im Bereich der angebrachten Öffnungen ein Zwischenraum frei von den Werkstoffen, wie den Klebstoffen der Verbindungsschicht. In diesen verbindungsschichtfreien Zwischenraum wird das bei Wärme erweichende Material eingebracht. Die Abfolge des Auftrages der Verbindungsschicht und des bei Wärme erweichenden Materials kann auch vertauscht werden. Die Verbindungsschicht kann beispielsweise durch Aufstreichen, Aufsprühen, Aufwalzen, Rakeln oder Aufdrucken des Klebstoffes oder Haftvermittlers mittels eines Druckverfahrens, wie Hochdruck, Flexodruck, Flachdruck, Offsetdruck, Tiefdruck, Durchdruck, Siebdruck usw. erfolgen. Das Auftragen des bei Wärme erweichenden Materials kann wie beschrieben, bevorzugt ebenfalls mittels eines der genannten Druckverfahren, erfolgen. Vorteilhaft erfolgt der Druckvorgang im Rapportdruck, d.h. der Vorschub des zu bedruckenden Materials wird z.B. durch eine Fotozelle oder dergl. gesteuert, die gewährleistet, dass die Stellung der Druckbilder zueinander immer gleich ist.The preferred continuous or roll goods can be produced by making the openings the outer film and the inner film, for example by rollers, stamps or dies, the Carrying needles, cutting tools or perforating tools through punching tools high energy radiation, such as laser beams or electron beams, heat or High frequency heating, or by chemical means by selective dissolution using a solvent or by an etching process. The outer films and the inner films are over the connection layer laminated against each other. Thereby remain in the area of the provided openings a space free of the materials, such as the adhesives of the connection layer. In this intermediate layer-free space becomes the material that softens when exposed to heat brought in. The sequence of the application of the connection layer and the one softening when warm Materials can also be exchanged. The connection layer can, for example by spreading, spraying, rolling, knife coating or printing on the adhesive or Adhesion promoter by means of a printing process, such as high pressure, flexographic printing, planographic printing, Offset printing, gravure printing, screen printing, screen printing, etc. take place. Applying the heat softening material as described, preferably also by means of one of the mentioned printing process. The printing process is advantageously carried out in repeat printing, i.e. the feed of the material to be printed is e.g. through a photocell or the like controlled, which ensures that the position of the printed images to each other is always the same.

Beispielsweise kann die Aussenfolie in einer Druckmaschine bedruckt und/oder konterbedruckt und beliebige Druckmuster, wie Reklameaufdrucke, Produkteinformatione, Illustrationen, Schriften, Muster, graphischen Gestaltungen usw. aufgebracht Z.B. mittels einer Nadelwalze oder -matrize, die in der Druckmaschine angeordnet sein kann, werden die Öffnungen in Form von Nadeleinstichen an der Aussenfolie angebracht Anschliessend werden in der Druckmaschine die Verbindungssschicht und das bei Wärme erweichende Material, wie eine Druckfarbe, als Druckmuster, auf die Aussenfolie aufgetragen. Die Innenfolie, allenfalls mit auf der später zum Behälter weisenden Seite mit einer Siegelschicht versehen, wird ebenfalls mit den Öffnungen versehen. Dies kann ebenfalls über eine Nadelwalze oder - matrize erfolgen. Die Aussenfolie und die Innenfolie werden anschliessend gegeneinander kaschiert. Alle Arbeitsgänge können in einer Vorrichtung simultan durchgeführt werden. Das Verfahren wird insbesondere kontinuierlich geführt und es entsteht daher eine Verbundfolie als Rollen- oder Endlosware.For example, the outer film can be printed and / or reverse printed in a printing press and any print samples, such as advertising prints, product information, illustrations, Fonts, patterns, graphic designs etc. applied e.g. by means of a needle roller or die, which can be arranged in the printing press, become the openings attached to the outer film in the form of needle punctures the printing press the connection layer and the heat softening material, such as a printing ink, as a print pattern, applied to the outer film. The inner film, at most is provided with a sealing layer on the side that later faces the container also provided with the openings. This can also be done using a needle roller or - die respectively. The outer film and the inner film are then laminated against each other. All operations can be carried out simultaneously in one device. The In particular, the process is carried out continuously and a composite film is therefore formed as roll or continuous goods.

Zum Bedeckeln von Behältern werden die befüllten Behälter beispielsweise kontinuierlich mit der Verbundfolie bedeckt und über den Behälterrand wird die Verbundfolie im Rapport an den Behälter angesiegelt. Damit wird gewährleistet, dass jeder Deckel --innerhalb der Siegelnaht -- Öffnungen in der Aussen- und Innenfolie und einen Zwischenraum mit bei Wärme erweichendem Material aufweist. Bei Beuteln kann die Verschlussmembrane einen Teil einer Wand oder wenigstens eine oder alle Beutelwände bilden.To cover containers, the filled containers are, for example, continuously used covered with the composite film and over the edge of the container the composite film is in the repeat sealed the container. This ensures that each lid - within of the Sealed seam - openings in the outer and inner foil and a space in between Has heat softening material. In the case of bags, the sealing membrane can Form part of a wall or at least one or all of the bag walls.

Als Behälter können beispielsweise Becher, Flaschen, Töpfe, Schalen usw.mit Einfüll-resp. Entnahmeöffnungen nahezu beliebiger Grösse eingesetzt werden. Die erfindungsgemässen Verschlussmembranen können beispielsweise für das Verschliessen und die Bedeckelung von Behältern, wie Bechern, Flaschen, Töpfen, Gobelets, Schalen aus Kunststoff, Glas, Keramik Metall usw., Gläsern, oder zum Formen oder zum Verschliessen von Beuteln, Weichfolienbeuteln, Standbeuteln usw. aus Kunststofffolien oder Folienverbunden z.B. aus Kunststoffen oder aus Kunststoffen und Metallfolien und/oder Papier verwendet werden. Die Behälter können mit flüssigen bis festen Nahrungs-, Genuss- oder Futtermitteln usw, wie Getränken, Milchprodukten, Fertigmenues, Tierfutter usw., befüllt, verwendet werden.Cups, bottles, pots, bowls etc. with filling or. Discharge openings of almost any size can be used. The inventive Sealing membranes can be used, for example, for closing and covering Containers such as cups, bottles, pots, tapestries, bowls made of plastic, glass, ceramics Metal, etc., glasses, or for forming or closing bags, soft-foil bags, Stand-up pouches etc. made of plastic films or film composites e.g. made of plastics or made of plastics and metal foils and / or paper. The containers can with liquid to solid food, beverages or feed etc., such as drinks, Dairy products, ready meals, animal feed etc., filled, can be used.

Es ist beispielsweise auch möglich gärenden Inhalt in einen Behälter abzufüllen und den Behälter mit der erfindungsgemässen Verschlussmembrane zu bedeckeln. Die während der Gärung entstehenden Gase können -- fallweise bezüglich des Innendruckes gesteuert durch die Ausbildung der Öffnungen in der Verschlussmembrane -- aus dem Behälter austreten. Mit einer Wärmebehandlung kann die Gärung unterbrochen und die Verschlussmembrane verschlossen werden. Danach können keine Keime, wie beispielsweise Hefekulturen, in den Behälter gelangen.For example, it is also possible to fill fermenting contents into a container and the container to be covered with the sealing membrane according to the invention. The during fermentation The resulting gases can be controlled by the internal pressure in some cases Formation of the openings in the sealing membrane - emerge from the container. With A heat treatment can interrupt the fermentation and close the sealing membrane become. Thereafter, no germs, such as yeast cultures, in the Container.

Die Figuren 1 bis 4 verdeutlichen beispielhaft an einem Becher vorliegende Erfindung.

  • Die Figur 1 zeigt einen Schnitt durch einen erfindungsgemässen Behälter beim Bedeckeln.
  • Die Figur 2 zeigt einen Schnitt durch einen erfindungsgemässen Behälter während der Wärmebehandlung.
  • Die Figur 3 zeigt einen Schnitt durch einen erfindungsgemässen Behälter während des Abkühlens.
  • Die Figur 4 zeigt eine Draufsicht auf einen erfindungsgemässen Behälter entlang der Schnittlinie B-B in Figur 1.
    • Figures 1 to 4 illustrate an example of the present invention on a cup.
  • FIG. 1 shows a section through a container according to the invention when capping.
  • FIG. 2 shows a section through a container according to the invention during the heat treatment.
  • FIG. 3 shows a section through a container according to the invention during cooling.
  • FIG. 4 shows a plan view of a container according to the invention along the section line BB in FIG. 1.

    • In Figur 1 ist der Behälter 10 mit der vorgesehenen Siegelbereich 13 - - der Schulter des Behälters 10 -- und die Verschlussmembrane 11 gezeigt. Die Verschlussmembrane 11 weist eine gegen den Behälter gerichtete Siegelschicht 14 auf. Die Verschlussmembrane 11 weist die Innenfolie 15 und die Aussenfolie 16 auf. Die beiden Folien 15 und 16 werden durch die Verbindungsschicht 17, z.B. eine Klebstoffschicht, trennfest miteinander verbunden. Die Verbindungsschicht 17 umgibt einem mittleren Bereich, den verbindungsschichtfreien Zwischenraum 21, vollständig. Anliegend an, resp. aufgedruckt auf, die Aussenschicht 16 ist das bei Wärme erweichende Material 18. Gegen die Innenfolie 15 weist das bei Wärme erweichende Material 18 einen Spalt auf, resp. ist nichthaftend an der Innenfolie 15. An der Innenfolie 15 ist eine Öffnung 19 angebracht. An der Aussenfolie 16 ist eine Öffnung 20 angebracht Vorteilhaft sind die Öffnungen 19 und 20 versetzt gegeneinander angeordnet. Die Figur 1 stellt einen Schnitt durch die Verschlussmembrane 11 entlang einer Linie A-A in Figur 4 dar.In Figure 1, the container 10 with the intended sealing area 13 - - the shoulder of the container 10 - and the closure membrane 11 shown. The sealing membrane 11 has one sealing layer 14 directed against the container. The closure membrane 11 has the Inner film 15 and the outer film 16. The two films 15 and 16 are by the Link layer 17, e.g. an adhesive layer, bonded together. The Connection layer 17 surrounds a central area, the connection layer-free space 21, completely. Fitting to, respectively. printed on, the outer layer 16 is that heat-softening material 18. The heat-softening material points against the inner film 15 Material 18 a gap, respectively. is not adherent to the inner film 15. On the inner film 15 an opening 19 is provided. An opening 20 is provided on the outer film 16 The openings 19 and 20 are advantageously arranged offset from one another. The figure 1 shows a section through the closure membrane 11 along a line A-A in figure 4 represents.

    Die Figur 2 zeigt den bedeckelten Behälter 10,11 befühlt mit dem Inhalt 12. Der Inhalt kann beispielsweise eine Nahrungs- oder Futtermittelzubereitung sein. Im Siegelbereich 13 über die Siegelschicht 14 ist die Verschlussmembrane 11 dicht mit dem Behälter 10 verbunden. Dann wird der bedeckelte Behälter 10,11 z.B. einer Wärmebehandlung, wie einer Pasteurisation, einer Sterilisation oder einer Uperisation ausgesetzt. Das über dem Inhalt 12 befindliche Fluid, wie das unter der Wärmeeinwirkung sieh ausdehnende Gas 23 und allfällige aus dem Inhalt 12 entweichende gasförmigen Bestandteile und auch Dampf, kann durch die Öffnung 19 in der Innenfolie in Pfeilrichtung durchtreten und kann sich durch das bei Wärme erweichende Material 18 oder an diesem vorbei, einen Weg bahnen und durch die Öffnung 20 in der Aussenfolie in die Umgebungsatmosphäre austreten. Es findet kein Druckaufbau im bedeckelten Behälter 10,11 statt.FIG. 2 shows the lidded container 10, 11 with the contents 12. The contents can for example a food or feed preparation. In the sealing area 13 over the sealing layer 14, the sealing membrane 11 is tightly connected to the container 10. Then the covered container 10, 11 is e.g. a heat treatment, such as pasteurization, exposed to sterilization or surgery. The one located above the content 12 Fluid, such as the gas 23 expanding under the action of heat and any from the Contents 12 escaping gaseous components and also steam, can pass through the opening 19 in the inner film in the direction of the arrow and can become softened by heat Material 18 or past it, clear a path and through opening 20 in emerge from the outer film into the surrounding atmosphere. There is no pressure build-up in the capped container 10.11 instead.

    Die Figur 3 zeigt die Situation beim anschliessenden Abkühlen des Behälters. Tendenziell wird Umgebungsluft in den bedeckelten Behälter 10,11 und insbesondere in den Raum in dem sich das Gas 23 befindet, zurückgesogen. Das bei Wärme erweichende Material 18, welches sich durch die Wärmeeinwirkung in flüssigem bis pastösem Zustande befindet, dringt dabei durch die Öffnung 19 an der Innenfolie 15 ein und erhärtet durch das Abkühlen gleichzeitig. Dabei schliesst das bei Wärme erweichende Material 18 die Öffnung 19 zuverlässig. Zudem verklebt das bei Wärme erweichende und anschliessend beim Abkühlen wieder erhärtende Material 18 die Öffnung 20 in der Aussenfolie und kann die Innen-und Aussenfolie 15,16 gegenseitig verkleben. Die erfindungsgemässe Verschlussmembrane hat demnach Ventilwirkung dadurch, dass während einer Wärmebehandlung gasförmige Anteile aus dem Behälter austreten, beim Abkühlen aber ein Rückstrom von z.B. Gasen unterbunden ist. Damit können z.B. auch keine Keim ein den Behälter mehr gelangen.Figure 3 shows the situation during the subsequent cooling of the container. Tendency is ambient air in the covered container 10, 11 and in particular in the room where the gas 23 is drawn back. The heat softening material 18 which is in a liquid to pasty state due to the effect of heat thereby through the opening 19 on the inner film 15 and hardened by cooling at the same time. The heat softening material 18 reliably closes the opening 19. In addition, it softens when it is warm and then sticks again when it cools down hardening material 18 the opening 20 in the outer film and can the inner and Outer film 15, 16 glue each other. The closure membrane according to the invention accordingly has Valve effect in that gaseous components from the Exit the container, but when cooling down, a backflow of e.g. Gases is prevented. With this e.g. no more germs get into the container.

    Die Figur 4 zeigt eine Draufsicht aufeine Verschlussmembrane 11 entlang einer Schnittlinie B-B in Figur 1. Die Verschlussmembrane weist etwa den Umriss des darunter liegenden Behälters auf und ist mit einer Haltelasche 22 zum späteren leichten Entfernen der Verschlussmembrane 11 vom Behälter 10 versehen. Die Draufsicht zeigt die Verbindungsschicht 17, z.B. einen Klebstoff, der die Innen- und Aussenfolie trennfest und delaminationsfest miteinander verbindet. Die Verbindungsschicht 17 umgibt einen verbindungsschichtfreien Zwischenraum 21, der seinerseits mit dem bei Wärme erweichenden Material 18, wie einem Lack, Hot-Melt, Paraffin, Wachs etc., befüllt ist. Die Öffnung 19 in der Innenfolie und die Öffnung 20 in der Aussenfolie liegen vorzugsweise nicht übereinander, sondern sind in horizontaler Ebene gegeneinander versetzt. In vorliegendem Beispiel sind die Öffnungen 19,20 vom bei Wärme erweichenden Material 18 nicht bedeckt sondern lediglich umgeben. Die Figuren 1, 2 und 3 zeigen den Behälter 10 und Verschlussmembrane 11 entlang der Schnittlinie A-A.Figure 4 shows a top view of a closure membrane 11 along a section line B-B in Figure 1. The closure membrane has approximately the outline of the container below and is with a retaining tab 22 for later easy removal of the closure membrane 11 provided by the container 10. The top view shows the connection layer 17, e.g. an adhesive that separates the inner and outer film from each other and is resistant to delamination connects. The connection layer 17 surrounds a space free of connection layers 21, which in turn with the heat-softening material 18, such as one Lacquer, hot melt, paraffin, wax etc., is filled. The opening 19 in the inner film and the Opening 20 in the outer film are preferably not one above the other, but are horizontal Level offset against each other. In the present example, the openings are 19, 20 not covered by the heat-softening material 18 but only surrounded. The Figures 1, 2 and 3 show the container 10 and closure membrane 11 along the section line A-A.

    Claims (10)

    Verschlussmembrane (11) für Behälter (10) enthaltend eine Aussenfolie (16) und eine Innenfolie (15) und eine zwischen den beiden Folien (15,16) angeordneten Verbindungsschicht (17) eine Siegelnahtzone (13),
    dadurch gekennzeichnet, dass
    innerhalb der Siegelnahtzone (13), zwischen der Aussenfolie (16) und der Innenfolie (15), wenigstens ein verbindungsschichtfreier Zwischenraum (21) angeordnet ist und innerhalb des verbindungsschichtfreien Zwischenraums (21) die Aussenfolie (16) wenigstens eine Öffnung (20) aufweist und die Innenfolie (15) wenigstens eine Öffnung (19) aufweist und im verbindungsschichtfreien Zwischenraum (21), zwischen der Aussenfolie (16) und der Innenfolie (15), ein Vorrat eines bei Wärme erweichenden Materials (18) angeordnet ist, wobei die Öffnungen (19) der Innenfolie (15) und die Öffnungen (20) der Aussenfolie (16) für den Durchtritt eines Fluids (23) in Verbindung stehen und die Öffnungen (19,20) bei einer Wärmebeaufschlagung der Verschlussmembrane (11) durch ein Erweichendes bei Wärme erweichenden Materials (18) verschlossen werden.    Sealing membrane (11) for containers (10) containing an outer film (16) and an inner film (15) and a connecting layer (17) arranged between the two films (15, 16), a sealing seam zone (13),
    characterized in that
    at least one intermediate layer-free space (21) is arranged within the sealing seam zone (13), between the outer foil (16) and the inner foil (15) and the outer foil (16) has at least one opening (20) within the intermediate layer-free space (21) and the inner film (15) has at least one opening (19) and a supply of heat-softening material (18) is arranged in the intermediate layer (21), which is free of the connecting layer, between the outer film (16) and the inner film (15), the openings ( 19) of the inner film (15) and the openings (20) of the outer film (16) for the passage of a fluid (23) are connected and the openings (19, 20) when the sealing membrane (11) is subjected to heat by softening under heat softening material (18) are closed.         Verschlussmembrane (11) nach Anspruch 1, dadurch gekennzeichnet, dass die Grösse einer Öffnung (20) in der Aussenfolie (16) bis zu 0,2 mm, bevorzugt von 0,02 bis 0,2 mm und insbesondere 0,1 bis 0,2 mm, Durchmesser oder Diagonalenlänge aufweist.Sealing membrane (11) according to claim 1, characterized in that the size an opening (20) in the outer film (16) up to 0.2 mm, preferably from 0.02 to 0.2 mm and in particular 0.1 to 0.2 mm, diameter or diagonal length. Verschlussmembrane (11) nach Anspruch 1, dadurch gekennzeichnet, dass die Grösse einer Öffnung (19) in der Innenfolie (15) kann beispielsweise bis zu 0,5 mm, bevorzugt von 0,05 bis 0,5 mm und insbesondere 0,20 bis 0,5 mm, Durchmesser oder Diagonalenlänge aufweist.Sealing membrane (11) according to claim 1, characterized in that the size An opening (19) in the inner film (15) can, for example, up to 0.5 mm, preferably from 0.05 to 0.5 mm and in particular 0.20 to 0.5 mm, diameter or diagonal length having. Verschlussmembrane (11) nach Anspruch 1, dadurch gekennzeichnet dass die Öffnungen (19,20) rund, oval oder polygonal sind.Sealing membrane (11) according to claim 1, characterized in that the openings (19.20) are round, oval or polygonal. Verschlussmembrane (11) nach Anspruch 1, dadurch gekennzeichnet, dass zwei oder mehrere Öffnungen (19,20) jeweils in der Aussenfolie (16) und/oder Innenfolie (15) angeordnet sind. Sealing membrane (11) according to claim 1, characterized in that two or a plurality of openings (19, 20) are each arranged in the outer film (16) and / or inner film (15) are. Verschlussmembrane (11) nach Anspruch 1, dadurch gekennzeichnet, dass die Gesamtfläche der Öffnungen in der Aussenfolie (20) von 0,0013 mm2 bis 0,13 mm2 ist.Sealing membrane (11) according to claim 1, characterized in that the total area of the openings in the outer film (20) is from 0.0013 mm 2 to 0.13 mm 2 . Verschlussmembrane (11) nach Anspruch 1, dadurch gekennzeichnet, dass die Gesamtfläche der Öffnungen in der Innenfolie (19) von 0,008 mm2 bis 0,8 mm2 ist.Sealing membrane (11) according to claim 1, characterized in that the total area of the openings in the inner film (19) is from 0.008 mm 2 to 0.8 mm 2 . Verschlussmembrane (11) nach Anspruch 1, dadurch gekennzeichnet, dass die Öffnungen in der Aussenfolie (20) und die Öffnungen in der Innenfolie (19) gegeneinander versetzt angeordnet sind.Sealing membrane (11) according to claim 1, characterized in that the openings in the outer film (20) and the openings in the inner film (19) offset from each other are arranged. Verfahren zur Herstellung der Verschlussmembrane (11) nach Anspruch 1, durch Behandlung einer Aussenfolie (16) in einer Druckmaschine, zweckmässig dem Bedrucken und/oder Konterbedrucken der Aussenfolie (16) mit einem Druckmuster, und durch anschliessendes Zuführen einer Innenfolie (15) und Kaschieren der Aussenfolie (16) und der Innenfolie (15) mittels einer Verbindungsschicht (17),
    dadurch gekennzeichnet, dass
    in der Druckmaschine, mittels einer Nadelwalze oder -matrize, an der Aussenfolie (16) Öffnungen (20), in Form von Nadeleinstichen, angebracht und in der Druckmaschine die Verbindungssschicht (17) und ein bei Wärme erweichende Material (18), als Druckmustar, aufgetragen werden und an der Innenfolie (15) Öffnungen (19) mittels einer Nadelwalzt oder -matrize angebracht werden und anschliessend die Aussenfolie (16) und die Innenfolie (15) gegeneinander kaschiert oder geklebt werden.    A method for producing the sealing membrane (11) according to claim 1, by treating an outer film (16) in a printing press, expediently printing and / or counter-printing the outer film (16) with a print pattern, and then feeding an inner film (15) and laminating the outer film (16) and the inner film (15) by means of a connecting layer (17),
    characterized in that
    in the printing press, by means of a needle roller or die, openings (20), in the form of needle punctures, are made on the outer film (16) and in the printing press the connecting layer (17) and a material (18) softening under heat, as a printing pattern, are applied and openings (19) are attached to the inner film (15) by means of a needle roller or die and the outer film (16) and the inner film (15) are then laminated or glued to one another.         Verwendung der Verschlussmembrane (11) nach Anspruch 1 zur Bedeckelung von Behältern aus der Reihe der Becher, Flaschen, Töpfe, Gobelets, Schalen aus Kunststoff, Glas, Keramik, Metall, von Gläsern, oder zum Formen oder zum Verschliessen von Beuteln, Weichfolienbeuteln oder Standbeuteln.Use of the closure membrane (11) according to claim 1 for covering containers from the range of cups, bottles, pots, tapestries, bowls made of plastic, Glass, ceramics, metal, of glasses, or for shaping or closing Pouches, soft foil pouches or stand-up pouches.
    EP98810578A 1998-06-24 1998-06-24 Sealing membrane with a pressure relief valve Expired - Lifetime EP0967160B1 (en)

    Priority Applications (8)

    Application Number Priority Date Filing Date Title
    ES98810578T ES2193501T3 (en) 1998-06-24 1998-06-24 CLOSING MEMBRANE WITH OVERPRESSURE VALVE.
    DK98810578T DK0967160T3 (en) 1998-06-24 1998-06-24 Closing diaphragm with pressure relief valve
    EP98810578A EP0967160B1 (en) 1998-06-24 1998-06-24 Sealing membrane with a pressure relief valve
    DE59808070T DE59808070D1 (en) 1998-06-24 1998-06-24 Closing membrane with pressure relief valve
    AT98810578T ATE238206T1 (en) 1998-06-24 1998-06-24 CLOSURE MEMBRANE WITH RELIEF VALVE
    US09/328,426 US6182850B1 (en) 1998-06-24 1999-06-09 Closure membranes
    CA002276120A CA2276120A1 (en) 1998-06-24 1999-06-21 Closure membranes
    BRPI9902625-2A BR9902625B1 (en) 1998-06-24 1999-06-24 sealing membrane for a container, process for the preparation of the sealing membrane and application of the sealing membrane.

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP98810578A EP0967160B1 (en) 1998-06-24 1998-06-24 Sealing membrane with a pressure relief valve

    Publications (2)

    Publication Number Publication Date
    EP0967160A1 true EP0967160A1 (en) 1999-12-29
    EP0967160B1 EP0967160B1 (en) 2003-04-23

    Family

    ID=8236153

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98810578A Expired - Lifetime EP0967160B1 (en) 1998-06-24 1998-06-24 Sealing membrane with a pressure relief valve

    Country Status (8)

    Country Link
    US (1) US6182850B1 (en)
    EP (1) EP0967160B1 (en)
    AT (1) ATE238206T1 (en)
    BR (1) BR9902625B1 (en)
    CA (1) CA2276120A1 (en)
    DE (1) DE59808070D1 (en)
    DK (1) DK0967160T3 (en)
    ES (1) ES2193501T3 (en)

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    US6182850B1 (en) 2001-02-06
    DK0967160T3 (en) 2003-08-11
    BR9902625A (en) 2000-01-04
    DE59808070D1 (en) 2003-05-28
    ES2193501T3 (en) 2003-11-01
    ATE238206T1 (en) 2003-05-15
    BR9902625B1 (en) 2008-11-18
    EP0967160B1 (en) 2003-04-23
    CA2276120A1 (en) 1999-12-24

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