EP0899209B1 - Verpackung für Nahrungsmittel und entsprechendes Verfahren - Google Patents

Verpackung für Nahrungsmittel und entsprechendes Verfahren Download PDF

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Publication number
EP0899209B1
EP0899209B1 EP98122058A EP98122058A EP0899209B1 EP 0899209 B1 EP0899209 B1 EP 0899209B1 EP 98122058 A EP98122058 A EP 98122058A EP 98122058 A EP98122058 A EP 98122058A EP 0899209 B1 EP0899209 B1 EP 0899209B1
Authority
EP
European Patent Office
Prior art keywords
membrane
tray
package
membranes
food product
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.)
Expired - Lifetime
Application number
EP98122058A
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English (en)
French (fr)
Other versions
EP0899209A3 (de
EP0899209A2 (de
Inventor
Michael P. Gorlich
Robert F. Mcpherson
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.)
Cryovac LLC
Original Assignee
Cryovac LLC
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 claimed from US08/064,700 external-priority patent/US5348752A/en
Priority claimed from US08/098,530 external-priority patent/US5419096A/en
Priority claimed from US08/154,756 external-priority patent/US5419097A/en
Priority claimed from US08/221,194 external-priority patent/US5439132A/en
Application filed by Cryovac LLC filed Critical Cryovac LLC
Publication of EP0899209A2 publication Critical patent/EP0899209A2/de
Publication of EP0899209A3 publication Critical patent/EP0899209A3/de
Application granted granted Critical
Publication of EP0899209B1 publication Critical patent/EP0899209B1/de
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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/245—Internal membrane, floating cover or the like isolating the contents from the ambient atmosphere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/06—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products
    • B65B25/065—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products of meat
    • B65B25/067—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products of meat combined with its conservation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/025—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers
    • B65B31/028—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers closed by a lid sealed to the upper rim of the container, e.g. tray-like container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/168—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying and securing double closures
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/185—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures the outer closure being a foil membrane
    • 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
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • 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
    • B65D77/30—Opening or contents-removing devices added or incorporated during filling or closing of containers
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2069—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere
    • B65D81/2076—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere in an at least partially rigid container
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0031—Membrane
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0093—Membrane
    • 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
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • B65D2565/388—Materials used for their gas-permeability

Definitions

  • This invention relates to machines for packaging food products, packages and related methods such that the packaged product may be maintained in one condition under certain circumstances and then converted to another condition.
  • the food package might maintain an inert gaseous atmosphere and then, when the package reaches a supermarket or other retail outlet, the food package will permit exposure of the food product to the ambient atmosphere.
  • it is particularly advantageous in connection with the packaging of meat in a modified atmosphere package such that the meat may be transported in a relatively inert atmosphere and then caused to bloom when it reaches a retail outlet by exposure to oxygen.
  • the upper cover is gas impermeable and may be removed to expose a lower cover that is air permeable.
  • the package may be shipped with the upper cover intact so that a inert gaseous atmosphere may be maintained within the package during shipping.
  • the upper cover may be removed at the supermarket leaving the lower cover. Since the lower cover is oxygen permeable, it allows the meat to bloom in the presence of oxygen.
  • US-A-4939332 discloses a tray packaging with a dual layer cover.
  • the two covering layers are spaced apart, therefore the two layers may be removed separately.
  • the inside cover since the inside cover is located on a step on the rim of the tray, it may not be severed from a roll of covering material in place on the tray, but must be cut-out separately and later assembled.
  • Domed meat packages have been used in the past to contain large cuts of meats such as chickens or roasts. However, these packages have suffered from a number of drawbacks.
  • the shelf life of the food product can be extended from a few days to as long as two weeks or more perhaps.
  • the customer In order to make the customer feel comfortable with the food packaging, the customer should be able to view a substantial portion of the food product. In order to maintain a desired atmosphere around the package, a package which is somewhat larger than the food product is required. However, with a large, relatively heavy meat product it is difficult to allow for spacing around the food product and yet maintain the product in an attractive fashion within the container.
  • the spacing becomes visible to the consumer. The consumer may believe that the package is too large and wasteful. Moreover, if the product is substantially larger than the food product, the food product may move around during transportation and handling, and the package itself may be indented or otherwise damaged.
  • deep draw packages may have been used for this type of packaging.
  • deep draw packages become difficult to form at large sizes and may experience significant deformation of the packaging material.
  • These packages are particularly susceptible to the formation of thin spots and to the indenting and collapsing of the corner regions.
  • the present applicant has appreciated that it would be desirable to form a domed package rather than to use the deep draw plastic forming technique.
  • the product may protrude above the sealing flanges that connect the upper and lower package portions.
  • the package portions may be formed from different materials adapted to particular packaging needs. For example, it may be desirable to form the bottom portion out of foam material and the top out of transparent plastic.
  • a package comprising a tray; a pliant first membrane sealed to said tray; and a pliant second membrane sealed to said tray over said first membrane, said membranes being secured to respective separate locations on said tray, wherein said locations are substantially coplanar, said coplanar locations being separated by a trough, such that said membranes are substantially coplanar with one another, said second membrane being removable from the tray independently of said first membrane.
  • the second membrane is less permeable than the first membrane to gases.
  • the first and second membranes each comprise a resilient material.
  • said first and second membranes each comprise a substantially impermeable material.
  • the tray comprises a foam
  • said coplanar locations comprise ledges, said ledges being pressed to substantially uniform thickness.
  • the first and second membranes are only connected by way of said tray.
  • said second membrane is peelable from said tray.
  • a method for packaging a food product comprising the steps of: filling a tray with a food product; covering said tray with a pliant first membrane by severing the membrane from a web of material, locating said first membrane in place on said tray and sealing said membrane to said tray at a first location, wherein the method comprises the subsequent steps of: a) severing the first membrane over a trough formed in said tray; b) covering said tray and said pliant first membrane with a substantially coplanar pliant second membrane; and c) sealing said second membrane to said tray at a second location outwardly of said first location, said first and second locations being substantially coplanar and being separated by said trough.
  • said first membrane is sealed to said tray and then severed from said web.
  • a package 10 for containing one or more food products "A" is shown ( Figures 1-2).
  • the package 10 is especially advantageous for containing red meat.
  • the package 10 includes a relatively rigid tray 12, a more permeable membrane 14, and a less permeable membrane 16.
  • the membranes 14 and 16 are peripherally connected to the tray 12.
  • the tray 12 may be made of a relatively rigid plastic, formed by thermomolding or the like.
  • the tray is preferably made of a material which is gas impermeable, and may be composed of a single polymeric sheet such as polyvinyl chloride, nylon, fluorohalocarbon, polyurethane or a composite of polymeric materials including: PVC; PVC and polyolefin; PVC and saran; PVC and saran and polyolefin; PVC, saran, ethylenevinylacetate copolymer; polystyrene, saran and polyolefin; polystyrene, saran and copolymer; nylon, saran, polyolefin; polyolefin, saran and polyethylene; polyester, saran, polyolefin; polycarbonate, saran and polyolefin; or many other materials which are well known in the art.
  • the tray 12 is preferably formed of a material
  • the tray 12 is shown in the illustrated embodiment as being generally rectangular, other shapes of the tray 12, such as a round form (not shown), are contemplated in accordance with the invention.
  • the tray 12 includes a curved base 18 which defines a cavity for receiving the food product A, and a double flanged edge 20 which extends around the periphery of the base 18.
  • the double flanged edge 20 defines a pair of ledges 22 and 24 separated by a trough 26.
  • the outermost edge 28 of the flange 20 may be turned downwardly.
  • the base 18 and the flange 20 may be molded as a single piece.
  • upper surfaces of the ledges 22 and 24 may be positioned in a single plane, such that the ledges 22 and 24 and the membranes 14 and 16 provide a substantially flat surface on top of the package 10.
  • the tray 12 may be formed from a porous, foam-like material that is heat pressed to ensure uniformity in the height of the ledges 22, 24 and the thickness of the tray 12. Such a flat surface facilitates a more reliable connection to the membranes 14, 16, and also permits multiple packages to be easily stacked on top of each other.
  • the more permeable layer 14 preferably comprises a flexible, resilient material such as a pliant plastic substance, to permit gaseous exchange therethrough as required by the particular application.
  • a flexible, resilient material such as a pliant plastic substance
  • the more permeable membrane 14 be highly transmissive of ambient atmosphere.
  • materials are capable of acting as the membrane 14 , including polyvinyl chloride, polycarbonate, cellophane, polypropylene, polyethylene, polyethylene copolymers, ionomer film or any other gas permeable materials which are well known in the art.
  • the membrane 14 may also be constructed of microporous films which have holes formed either chemically or mechanically. The membrane 14 need only be sufficiently strong to prevent perforation in use.
  • the membrane 14 is secured to the tray 12 at the inner ledge 24.
  • the membrane 14 be of a material that is heat sealable to the tray 12.
  • the film is "sealed" to the tray, signifying that it is heat fused or adhesively secured to the tray as opposed to being frictionally connected thereto.
  • a trough 26 is defined between the ledges 22 and 24, a trough 26 is defined. The trough 26 aids in securing the membrane 14 to the inner ledge 24.
  • the membrane 14 is stretched over the tray 12 and the ledges 22, 24, the membrane 14 is secured to the inner ledge 24, then trimmed by moving a cutting press downwardly through the membrane 14 and into the trough 26 as explained later.
  • the trough 26 has a "U"-shape in Figure 2, it is also understood that the trough 26 may assume a "V"-shape, a semi-circular shape, a rectangular shape, or another suitable shape that may be desired for aesthetic, functional, or other reasons.
  • the less permeable membrane 16 also preferably comprises a flexible, resilient material such as a pliant plastic substance.
  • the membrane 16 is preferably selected from a group of materials that are relatively less gas permeable, such as polyester, nylon, cellophane, polypropylene, polyvinyl acetate, saran, or combinations of these materials.
  • the less permeable membrane 16 is impermeable to gases.
  • the less permeable membrane 16 is removably secured to the outer ledge 22, again by heat sealing, adhesive techniques, or other techniques known in the art.
  • the membrane 16 may be trimmed by moving a cutting press downward through the membrane 16 , at a position outward from the outermost edge 28 as explained later.
  • the membrane 16 may be trimmed before sealing it to the outer ledge 22.
  • the membrane 16 is preferably trimmed to leave an overhang 19 , to facilitate later removal of the membrane 16 by lifting the overhang 19 and peeling the membrane 16 back from its connection to the outer ledge 22.
  • the less permeable membrane 16, when secured to the ledge 22, is totally free of any connection to the more permeable membrane 14 , except frictional connection or indirect connection through the tray 12. This facilitates the convenient removal of the less permeable membrane 16 from the package while leaving the more permeable membrane 14 in place and undisturbed.
  • the membranes 14, 16 are not connected to each other, the membranes 14, 16 are substantially coplanar to each other, in face to face abutment, each advantageously being under slight resilient tension.
  • a desirable atmosphere may be maintained within the package 10 for the benefit of the food product A contained therein. This may be done by sealing the package closed in the desired atmosphere.
  • the initial atmosphere in some embodiments may contain a relatively low concentration of oxygen.
  • gases including substantial concentrations of carbon dioxide or nitrogen may be maintained with the package to reduce the exposure of the food product A to oxygen. In the case of meat products, this forestalls the blooming of the meat product until a later time.
  • the package 10 exists without the less permeable membrane 16, and includes only the more permeable membrane 14 and the tray 12 .
  • the red meat product A can be caused to turn red or bloom in the presence of a higher concentration of oxygen.
  • both membranes 14, 16 may be formed from substantially impermeable materials, for use in certain applications. This arrangement may be useful, for example, to provide alternative labeling schemes.
  • the lower membrane may contain a label of a supermarket or other retail store, such as an advertising label;
  • the upper membrane on the other hand, may display a label from an initial meat packer, providing instructions to the retail butcher rather than the ultimate buyer of the meat. Then the outer membrane 16 may be easily removed relative to the inner membrane 14 .
  • a tray 12 held from below in a rigid confirming carrier 60, is filled in a conventional fashion with a food product A.
  • the package 10 is evacuated of oxygen and gas back-filled with a transportion gas which is lower in oxygen content.
  • a web 70 of the more permeable membrane 14 is unwound from a pair of rolls 62 and 64 and positioned over the tray 12.
  • the more permeable web 70 is secured to the inner ledge 24, for example by a heat sealing machine 66.
  • a conventional cutting press 68 is used to cut the web 70.
  • the web 70 is cut at a position adjacent to the trough 26. It should be clear that the trough 26 facilitates the removal or cutting of the membrane 14 from the web 70 in place on the package 10.
  • the web 70 may also be severed by using heat or ultrasonic energy or the like.
  • a web 76 of the less permeable material 16 is unrolled from a pair of rolls 72, 74 so that the less permeable web 76 may be positioned on the package 10.
  • the less permeable web 76 is secured to the ledge 22. This securing is performed using conventional techniques, such as using a heat sealing machine 42.
  • the transportation gas is sealed inside the package 10.
  • the web 76 is cut by conventional cutting equipment 78. In the embodiment of Figures 1-2, the cutting occurs slightly outward from the edge 28.
  • the package When the package 10 has been assembled, the package may be shipped to locations for retain sale. At the retail establishment, the package is held until the package is ready to be displayed. At that point, the less permeable membrane 16 is peeled away and discarded. After a short holding period, the package may be displayed for retain sale. The holding period is necessary to allow the package to absorb oxygen through the more permeable membrane 14. After the meat product has bloomed, it can be displayed for retail sale.
  • both membranes 14, 16 may be attached to the same tray 12 in a fashion that permits high speed manufacture. While the simplified process depicted in Figure 3 suggests that the material may be packaged in a serial fashion, this approach would likewise apply to conventional packaging equipment.
  • the more permeable membrane is sufficient to maintain the desired gaseous environment in the package until the less permeable membrane is in place. This is especially true with high speed systems. However, in some circumstances, it may be useful to provide a particular gaseous atmosphere between the stations where the more permeable and less permeable membranes are applied.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Vacuum Packaging (AREA)
  • Packages (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Preparation Of Fruits And Vegetables (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)
  • Packaging Frangible Articles (AREA)

Claims (9)

  1. Verpackung (10), umfassend:
    eine Schale (12);
    eine biegsame erste Membrane (14), die dicht mit der Schale verbunden ist;
    und eine biegsame zweite Membrane (16), die oberhalb der ersten Membrane dicht mit der Schale verbunden ist, wobei besagte Membrane an jeweils getrennten Stellen (24, 22) an der Schale befestigt sind, dadurch gekennzeichnet, dass
    besagte Stellen (24, 22) im wesentlich koplanar sind, wobei besagte koplanare Stellen über eine Vertiefung (26) voneinander getrennt sind, so dass besagte Membrane im wesentlichen zueinander koplanar sind, wobei die zweite Membrane von der Schale unabhängig von der ersten Membrane entfernbar ist.
  2. Verpackung (10) nach Anspruch 1, dadurch gekennzeichnet, dass
    die zweite Membrane (16) weniger permeable als die erste Membrane (14) gegenüber Gas ist.
  3. Verpackung (10) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass
    die erste Membrane (14) und die zweite Membrane (16) jeweils ein elastisches Material umfassen.
  4. Verpackung (10) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass
    die erste Membrane (14) und die zweite Membrane (16) jeweils ein im wesentlichen impermeables Material umfassen.
  5. Verpackung (10) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass
    die Schale (12) einen Schaum umfasst, und die koplanaren Stellen (24, 22) Lagen umfassen, wobei die Lagen zu einer im wesentlichen uniformen Dicke verpresst sind.
  6. Verpackung (10) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass
    die erste Membrane (14) und die zweite Membrane (16) lediglich über die Schale (12) miteinander verbunden sind.
  7. Verpackung (10) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass
    die zweite Membrane (16) von der Schale (12) abziehbar ist.
  8. Verfahren zur Verpackung eines Lebensmittelprodukts (A), umfassend die folgenden Schritte:
    Befüllen einer Schale (12) mit einem Lebensmittelprodukt;
    Überdecken der Schale mit einer biegsamen ersten Membrane (14) durch Abteilen der Membrane von einem Gewebematerial (70), Anordnen der ersten Membrane auf der Schale und Herstellen einer dichten Verbindung zwischen der Membrane und der Schale an einer ersten Stelle (24),
    wobei das Verfahren durch folgende zusätzliche Schritte gekennzeichnet ist:
    a) Abtrennen der ersten Membrane oberhalb einer Vertiefung (26), die in der Schale ausgeformt ist,
    b) Überdecken der Schale und besagter biegsamen ersten Membrane mit einer im wesentlichen koplanaren biegsamen zweiten Membrane (16), und
    c) Herstellen einer dichten Verbindung der zweiten Membrane auf der Schale an einer zweiten Stelle (22) außerhalb der ersten Stelle, wobei die erste Stelle und die zweite Stelle im wesentlichen koplanar und über besagte Vertiefung voneinander getrennt sind.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass
    die erste Membrane (14) dicht mit der Schale (12) verbunden und dann von besagtem Gewebe (70) abgetrennt wird.
EP98122058A 1993-05-20 1994-05-16 Verpackung für Nahrungsmittel und entsprechendes Verfahren Expired - Lifetime EP0899209B1 (de)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US64700 1993-05-20
US08/064,700 US5348752A (en) 1993-05-20 1993-05-20 Dual state food packaging
US98530 1993-07-08
US08/098,530 US5419096A (en) 1993-07-28 1993-07-28 Packaging method and apparatus for packaging large meat products in a desired gaseous atmosphere
US154756 1993-11-18
US08/154,756 US5419097A (en) 1993-11-18 1993-11-18 Method and apparatus for packaging food
US08/221,194 US5439132A (en) 1993-05-20 1994-03-31 Dual cover package
US221194 1994-03-31
EP94918018A EP0699157B1 (de) 1993-05-20 1994-05-16 Verpackung für nahrungsmittel mit erhöhter haltbarkeit

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EP0899209A2 EP0899209A2 (de) 1999-03-03
EP0899209A3 EP0899209A3 (de) 1999-04-14
EP0899209B1 true EP0899209B1 (de) 2003-08-13

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EP99109931A Withdrawn EP0949147A1 (de) 1993-05-20 1994-05-16 Verpackungsanlagen zum Erhöhen der Haltbarkeit von Lebensmitteln
EP94918018A Expired - Lifetime EP0699157B1 (de) 1993-05-20 1994-05-16 Verpackung für nahrungsmittel mit erhöhter haltbarkeit
EP98122058A Expired - Lifetime EP0899209B1 (de) 1993-05-20 1994-05-16 Verpackung für Nahrungsmittel und entsprechendes Verfahren

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EP99109931A Withdrawn EP0949147A1 (de) 1993-05-20 1994-05-16 Verpackungsanlagen zum Erhöhen der Haltbarkeit von Lebensmitteln
EP94918018A Expired - Lifetime EP0699157B1 (de) 1993-05-20 1994-05-16 Verpackung für nahrungsmittel mit erhöhter haltbarkeit

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EP (3) EP0949147A1 (de)
JP (2) JPH08510708A (de)
KR (1) KR100320356B1 (de)
AT (2) ATE188660T1 (de)
AU (1) AU688329B2 (de)
CA (1) CA2163230C (de)
DE (2) DE69433041T2 (de)
NZ (1) NZ267278A (de)
WO (1) WO1994027868A2 (de)

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Also Published As

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CA2163230A1 (en) 1994-12-08
AU6952094A (en) 1994-12-20
DE69433041T2 (de) 2004-05-27
DE69422620D1 (de) 2000-02-17
DE69433041D1 (de) 2003-09-18
CA2163230C (en) 1999-11-02
EP0699157B1 (de) 2000-01-12
ATE188660T1 (de) 2000-01-15
DE69422620T2 (de) 2000-05-31
ATE247028T1 (de) 2003-08-15
NZ267278A (en) 1997-11-24
AU688329B2 (en) 1998-03-12
WO1994027868A2 (en) 1994-12-08
EP0949147A1 (de) 1999-10-13
JP2001294278A (ja) 2001-10-23
EP0899209A3 (de) 1999-04-14
EP0899209A2 (de) 1999-03-03
JPH08510708A (ja) 1996-11-12
WO1994027868A3 (en) 1995-02-09
EP0699157A1 (de) 1996-03-06
KR100320356B1 (ko) 2002-01-15

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