EP1385755B1 - Plastic packaging with at least one sealed knob - Google Patents

Plastic packaging with at least one sealed knob Download PDF

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Publication number
EP1385755B1
EP1385755B1 EP02735254A EP02735254A EP1385755B1 EP 1385755 B1 EP1385755 B1 EP 1385755B1 EP 02735254 A EP02735254 A EP 02735254A EP 02735254 A EP02735254 A EP 02735254A EP 1385755 B1 EP1385755 B1 EP 1385755B1
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EP
European Patent Office
Prior art keywords
packaging
sealing material
plastic packaging
knob
sealing
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
EP02735254A
Other languages
German (de)
French (fr)
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EP1385755A1 (en
Inventor
Rudolf Fux
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.)
CFS Kempten GmbH
Original Assignee
CFS Kempten GmbH
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Filing date
Publication date
Application filed by CFS Kempten GmbH filed Critical CFS Kempten GmbH
Publication of EP1385755A1 publication Critical patent/EP1385755A1/en
Application granted granted Critical
Publication of EP1385755B1 publication Critical patent/EP1385755B1/en
Anticipated expiration legal-status Critical
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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
    • B65D77/10—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
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2068—Means for reclosing the cover after its first opening
    • B65D77/2072—Mechanical means
    • B65D77/2076—Mechanical means provided by the cover itself
    • 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
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
    • B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S206/00—Special receptacle or package
    • Y10S206/807—Tamper proof

Definitions

  • the present invention relates to a plastic packaging comprising a packaging tray and a cover film, wherein the cover film is sealed in the sealing region at least partially peelable to the packaging tray and the lid film or the packaging tray at least one nub and the packaging tray or the lid sheet complementary thereto has at least one recess through which the nub (s) is / are inserted when closing the plastic packaging, wherein at least a portion of at least one nub is provided with a sealing material or preferably at least a portion of at least one nub and the edge region of the complementary Aussproung are connected to a sealing material, the first time Opening the packaging is damaged. Furthermore, the present invention relates to methods for producing the packaging according to the invention.
  • plastic packaging packages have a packaging tray in which the packaged product is located and a lid film.
  • the lidding foil is sealed to the packaging tray. Since the packaged goods are often not consumed immediately after opening, it is advantageous if the pack can be resealed after opening.
  • the German patent application with the file number DE 198 59 042.3 teaches a plastic packaging provided with knobs from a packaging tray and a lid film, wherein the lid film is sealed in the sealing area at least partially peelable to the packaging tray and the lidding film or the packaging tray at least one knob and the packaging tray or Cover film complementary thereto has at least one recess through which the nub is inserted, so that the plastic package is re-closed after opening.
  • the present invention is therefore based on the object to provide a provided with at least one knob plastic packaging that does not have the disadvantages of the prior art.
  • a plastic packaging from a packaging tray and a cover film, wherein the lid film is sealed in the sealing region at least partially peelable to the packaging tray and the lid film or the packaging tray at least one nub and the packaging tray or lid film complementary to at least one Recess has, through which the knob (s) is inserted when sealing the plastic packaging or, wherein at least a portion of at least one knob is provided with a sealing material or preferably at least a portion of at least one knob and the edge region of the complementary Aussproung connected to a sealing material are damaged when opening the package for the first time.
  • a packaging tray in the sense of the invention is any packaging tray familiar to the person skilled in the art, which has been produced from a thermoplastic and dimensionally stable single-layer or multi-layer film which is preferably customary for the packaging of foods.
  • the film must have on at least one of its two surfaces a sealing layer which is peelable.
  • the sealing layer used is preferably a mixture of LDPE (low density polyethylene) and a polybutylene.
  • the mixture preferably contains 15 to 30% by weight, particularly preferably 20 to 28% by weight, of polybutylene.
  • the polybutylene has a melt index (MFI) in the range of 0.3 to 2.0 g / 10 min (190 ° C and 216 kg according to ASTM 1238).
  • the packaging tray is produced from a multilayer film with a foamed carrier film, preferably a foamed polyolefin film, particularly preferably polypropylene film.
  • the packaging tray is made of a film, as disclosed in the patent application with the file number of the German Patent Office 198 40 046.2. This patent application is hereby incorporated by reference and thus forms part of the disclosure.
  • the thermoformed, preferably thermoformed packaging trays are closed after filling with the packaged product with a specialist, familiar, preferably thermoformable lidding film.
  • lid films are multilayer films with a gas barrier layer of ethylene vinyl alcohol copolymer, preferably of polyethylene terephthalate (PET) / adhesion promoter layer / polyethylene / adhesion promoter layer / ethylene / vinyl alcohol copolymer / adhesion promoter layer / polyethylene, wherein the polyethylene terephthalate layer may be replaced by polypropylene.
  • PET polyethylene terephthalate
  • the cover film of the packaging according to the invention has the recess, it may also have SiO x as a gas barrier layer.
  • the cover sheet of PET / SiO x / adhesion promoter / polyethylene is constructed.
  • the lid film is sealed according to the invention to the packaging tray in the sealing area, wherein the lidding film is at least partially peelable sealed to the packaging tray.
  • the lidding film is heated at a temperature of from 130 ° C to 150 ° C, preferably from 135 to 145 ° C, and a pressure of from 3 to 8 x 10 5 N / m 2 , preferably from 4.0 to 5, 0 x 10 5 N / m 2 sealed to the packaging tray.
  • the solid seal is preferably carried out at a temperature at least 10 ° C. and preferably at twice the pressure in comparison to the peelable seal.
  • a solid seal in the sense of the invention is a seal in which the detachment force of the cover film must be at least five times higher than in the area of the peelable seal.
  • the sealing area on the packaging tray is preferably located on a horizontal plane, preferably above the packaged goods, and preferably extends around the entire packaged goods on this level.
  • the lidding film may be firmly sealed to preferably at least one side of this polygon with the packaging tray, while the lidding film in the remaining sealing area is peelably sealed to the packaging tray.
  • preferably 5-25% of the sealing area may be provided with a solid seal.
  • the packaging tray or the cover sheet has at least one recess, which is preferably located on the horizontal plane above the packaged goods.
  • the recess may have any shape and size, but must be compatible with the shape of the knob.
  • the recess is approximately circular with a diameter of 3 to 12 mm, preferably 4 to 9 mm.
  • the recess is preferably drilled or punched into the packaging tray or lid film, punching being particularly preferred.
  • the lidding foil or the packaging trough has at least one nub, which is arranged complementary to the recess in the packaging trough or the cover foil and whose shape must be compatible with the shape of the recess so that it can be inserted through the recess and remains there.
  • the knob has approximately the shape of a cylinder whose diameter is preferably from 3 to 12 mm and whose length is preferably from 3 to 15 mm, particularly preferably 4 to 8 mm. Most preferably, the diameter of the nub ⁇ the diameter of the approximately circular recess.
  • the nub (s) or the recess (s) is / are arranged closer to the outer edge of the plastic packaging than the sealing area.
  • the nub (s) or the complementary recess (s) are preferably attached to the plastic package so that they are outside the range of the solid seal, preferably diametrically opposite.
  • This arrangement has the advantage that the cover sheet can be stretched and then firmly but releasably connected to the / the knob fasteners.
  • the lidding film has the recess (s) and the packaging tray has the nub (s).
  • the plastic packaging according to the invention may preferably have additional means for reclosing the packaging.
  • Such means are preferably a zipper, e.g. in EP 0 621 197 A1 discloses a sealing lip, a snap closure, as disclosed in EP 0 427 512 or a hook and loop fastener as disclosed in the copending application with the internal file number CH 8006.
  • At least one subregion of at least one nub is provided with a sealing material, preferably at least one subregion of at least one nub and the edge region of the complementary recess is connected to a sealing material which is damaged when the packaging is opened for the first time.
  • the damage to the sealing material caused by the initial opening of the package is preferably carried out as a fracture and / or at least partial fall off of at least a portion of the sealing material and / or deformation of at least a portion of the sealing material, the damage preferably being detectable without technical aids is.
  • Damage that can be detected without technical aids is damage that is easy to see and / or feel. Tangible damage is of great advantage especially for visually impaired consumers.
  • the color of the sealing material differs from the color of the plastic packaging. Particular preference is given to distinct or stark color differences, for example white and black or yellow and red.
  • a damaged sealing material has a different texture from the undamaged sealing material, which is easy to feel, especially by visually impaired customers.
  • the surface of the sealing material has a different color than the sealing material itself, with damage to the sealing material resulting in visualization of the sealing material differently colored from the sealing surface.
  • the sealing material when attached to the dunnage itself, has sufficient adhesive force to secure it to a nub, preferably to a nub and the peripheral area of a complementary spall, to the storage and conventional transport of the plastic wrapping first opening the plastic packaging at least a partial separation or deformation, preferably a break and particularly preferably causes the complete separation of the sealing material of the plastic packaging.
  • a sufficient adhesion force may optionally be realized by dissolving with a solvent and / or heating.
  • the sealing materials used are natural or synthetic waxes or plastics. Particularly preferred are plastics that cure under the influence of air and / or heat and / or radiation so that the sealing material is so brittle that it is easy to damage.
  • the sealing materials are self-adhesive. Particularly preferred in this case are sealing materials which are self-adhesive in the heated state.
  • sealing materials are applied by means of an adhesive material to at least one nub, preferably at least one nub and the edge region of the complementary recess.
  • sealing materials which are so brittle that they break when the package is opened for the first time.
  • the packages provided with nubs according to the invention are resealable.
  • Foodstuffs preferably solid, particularly preferably fresh or cooked meat or sausage products, are particularly preferably packaged in the packaging according to the invention.
  • the plastic packaging according to the invention is preferably produced by the packaging tray is formed by deep drawing a film. Thereafter, or at the same time, a recess is made in the packaging tray, preferably formed by punching, or by thermoforming a nub.
  • the packaging tray is optionally filled and then sealed a lid sheet on the packaging tray, wherein prior to sealing optionally a gas exchange to extend the shelf life of the food in the packaging is made.
  • at least one nub is preferably produced by thermoforming of the cover film or at least one recess is punched out.
  • the production of a nub takes place preferably with a stamp or with compressed air, with the / with which the material to be deformed is pressed through the recess.
  • a sealing material is applied to at least one nub, preferably a nub, and the edge region of the complementary recess.
  • the packages according to the invention make it possible for the consumer to quickly and unambiguously recognize the original packaging state of their product. Particularly in the case of food packagings which have been originally packaged in an airtight manner and which have been resealed after initial opening, the consumer can infer the integrity or damage of the sealing material to the condition of the contents of the pack without having to inspect the product itself or thoroughly examine it.
  • a plastic packaging which can be reclosed by at least one pimple according to the invention, it is possible to seal a once-opened packaging in a good and yet releasable manner. The closing or opening is easy for the user to carry out.
  • the plastic packaging is simple and inexpensive to manufacture.
  • Figure 1 shows a provided with knobs plastic packaging.
  • Figure 2 shows another provided with knobs plastic packaging.
  • FIG. 3 shows sections of the plastic packaging according to the invention before and after opening.
  • FIG. 1 shows a plastic packaging 1 according to the invention, which consists of a packaging tray 2 and a cover film 3.
  • the packaging has a sealing area 4, which is arranged horizontally and extends around the entire packaging cavity 2 around.
  • this sealing area 4 the lidding film 3 sealed to the packaging tray 2, wherein the lidding film is peelably sealed in the weakly dotted portion of the sealing area 4 to the packaging tray, while it is sealed in the highly dotted portion of the sealing area 4 to the packaging tray.
  • the lidding foil is pulled off the packaging tray only on three sides and remains connected to it in the section of the solid seal.
  • the lidding film a semi-rigid polyethylene terephthalate / EVOH / polyethylene-polybutylene film, has two approximately cylindrical knobs that are 4 mm in length and 7 mm in diameter.
  • the nubs 5 have been embossed by thermoforming with a stamp in the lidding film.
  • the packaging tray 2 has two approximately circular recesses 6, which are arranged opposite the knobs 5 and have a diameter of 7 mm.
  • the nubs 5 and recesses 6 can also be arranged at other locations of the plastic packaging and / or in addition to the illustrated two even more nubs / recesses may be present.
  • further reclosing means may be disposed on the packaging tray or lid film. After opening the cover film, the package can be closed again by the nubs 5 are pressed into the recesses 6 and remain there until the cover sheet pulled off again and the knobs are pulled out of the recesses.
  • FIG. 2 shows a plastic packaging 1 according to FIG. 1, but with the nubs 5 in the packaging trough 4 and the recess 6 in the cover film 3.
  • Figures 3 A to F show sections of the plastic packaging according to the invention before and after opening in side view.
  • Figure 3 A shows a nub 5, of which a partial area is provided with sealing material 9.
  • FIG. 3B shows a nub 5, of which a partial area is provided with sealing material 9, wherein the sealing material forms a connection between the nub 5 and the edge area of the recess 7 complementary to the nub.
  • FIG. 3C shows the article of FIG. 3A after the sealing material 9 has been damaged by breakage when a package 1 is first opened.
  • FIG. 3D shows the article of FIG. 3B after the sealing material 9 has been damaged by breakage during the first opening of a package 1.
  • FIG. 3E shows the article of FIG. 3A after the sealing material 9 has been damaged by deformation when a package 1 is opened for the first time.
  • FIG. 3F shows the article of FIG. 3B after the sealing material 9 has been damaged by deformation when a package 1 is opened for the first time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)
  • Closures For Containers (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a plastic packaging ( 1 ) made from a packaging dish ( 2 ) and a cover lid ( 3 ). The cover lid ( 3 ) is at least partially sealed to the packaging dish ( 2 ) in a peelable manner and the cover lid ( 3 ), or the packaging dish ( 2 ), comprises at least one knob ( 5 ) and complementary to the above the packaging dish ( 2 ) or the cover lid ( 3 ) comprises a recess ( 6 ), through which the knob(s) is/are pressed on sealing the plastic packaging ( 1 ). At least a partial region of at least one knob is provided with a sealing material ( 9 5) or preferably at least one partial region of at least one knob ( 5 ) and the boundary region of the complementary recess ( 7 ) is connected to a sealing material ( 9 ), which on first opening of the packaging ( 1 ) is damaged. The invention further relates to methods for the production of said packages.

Description

Die vorliegende Erfindung betrifft eine Kunststoffverpackung aus einer Verpackungsmulde und einer Deckelfolie, wobei die Deckelfolie im Siegelbereich mindestens teilweise peelbar an die Verpackungsmulde gesiegelt ist und die Deckelfolie oder die Verpackungsmulde mindestens eine Noppe und die Verpackungsmulde oder die Deckelfolie komplementär dazu mindestens eine Aussparung aufweist, durch die die Noppe(n) beim Verschließen der Kunststoffverpackung gesteckt wird bzw. werden, wobei mindestens ein Teilbereich mindestens einer Noppe mit einem Siegelmaterial versehen ist oder vorzugsweise mindestens ein Teilbereich mindestens einer Noppe und der Randbereich der komplementären Ausspaarung mit einem Siegelmaterial verbunden sind, das beim erstmaligen Öffnen der Verpackung beschädigt wird.
Ferner betrifft die vorliegende Erfindung Verfahren zur Herstellung der erfindungsgemäßen Verpackungen.The present invention relates to a plastic packaging comprising a packaging tray and a cover film, wherein the cover film is sealed in the sealing region at least partially peelable to the packaging tray and the lid film or the packaging tray at least one nub and the packaging tray or the lid sheet complementary thereto has at least one recess through which the nub (s) is / are inserted when closing the plastic packaging, wherein at least a portion of at least one nub is provided with a sealing material or preferably at least a portion of at least one nub and the edge region of the complementary Ausspaarung are connected to a sealing material, the first time Opening the packaging is damaged.
Furthermore, the present invention relates to methods for producing the packaging according to the invention.

Verpackungsgüter, insbesondere Lebensmittel, werden heutzutage immer öfter in Kunststoffverpackungen zum Verkauf angeboten. Diese Kunststoffverpackungen weisen eine Verpackungsmulde, in der sich das Verpackungsgut befindet und eine Deckelfolie auf. Die Deckelfolie ist an die Verpackungsmulde gesiegelt. Da das Verpackungsgut nach dem Öffnen oftmals nicht sofort verbraucht wird, ist es von Vorteil, wenn die Verpackung nach dem Öffnen wiederverschließbar ist.Packaged goods, especially food, are nowadays increasingly being offered for sale in plastic packaging. These plastic packages have a packaging tray in which the packaged product is located and a lid film. The lidding foil is sealed to the packaging tray. Since the packaged goods are often not consumed immediately after opening, it is advantageous if the pack can be resealed after opening.

Es hat deshalb in der Vergangenheit nicht an Versuchen gefehlt, wiederverschließbare Verpackungen zur Verfügung zu stellen. Beispielhaft seien hier nur die EP 0 564 695, DE 39 25 746, EP 0 386 490, DE 39 41 183, EP 0 408 516, WO 97/05023, EP 0 716 986, EP 0 595 368, EP 0 579 262, EP 0 506 295, EP 0 427 513, EP 0 427 512, EP 0 385 565, EP 0 381 329 oder EPO 379 927 genannt, in denen entweder Verfahren und Vorrichtungen zur Herstellung einer wiederverschließbaren Verpackung und/oder die wiederverschließbare Verpackung selbst gelehrt werden.There has therefore been no lack of attempts in the past to provide resealable packaging. Examples which may be mentioned here are only EP 0 564 695, DE 39 25 746, EP 0 386 490, DE 39 41 183, EP 0 408 516, WO 97/05023, EP 0 716 986, EP 0 595 368, EP 0 579 262, EP 0 506 295, EP 0 427 513, EP 0 427 512, EP 0 385 565, EP 0 381 329 or EPO 379 927, in which either methods and devices for producing a resealable packaging and / or the resealable packaging itself are taught ,

Alle in den oben genannten Veröffentlichungen offenbarten, wiederverschließbaren Verpackungen haben entweder den Nachteil, daß sie aufwendig herzustellen und/oder nur schlecht wiederverschließbar sind.All reclosable packages disclosed in the above publications either have the disadvantage of being expensive to produce and / or poorly resealable.

Die deutsche Patentanmeldung mit dem Aktenzeichen DE 198 59 042.3 lehrt eine mit Noppen versehene Kunststoffverpackung aus einer Verpackungsmulde und einer Deckelfolie, wobei die Deckelfolie im Siegelbereich mindestens teilweise peelbar an die Verpackungsmulde gesiegelt ist und die Deckelfolie oder die Verpackungsmulde mindestens eine Noppe und die Verpackungsmulde oder die Deckelfolie komplementär dazu mindestens eine Aussparung aufweist, durch die die Noppe gesteckt wird, so daß die Kunststoffverpackung nach dem Öffnen wiederverschließbar ist.The German patent application with the file number DE 198 59 042.3 teaches a plastic packaging provided with knobs from a packaging tray and a lid film, wherein the lid film is sealed in the sealing area at least partially peelable to the packaging tray and the lidding film or the packaging tray at least one knob and the packaging tray or Cover film complementary thereto has at least one recess through which the nub is inserted, so that the plastic package is re-closed after opening.

Als nachteilig erweist sich bei den mit Noppen versehenen Kunststoffverpackungen, daß der Verbraucher der verschlossenen Verpackung meist nicht entnehmen kann, inwieweit die Verpackung sich noch im ungeöffneten Originalzustand befindet oder, ob die Verpackung bereits geöffnet worden ist. Der Verbraucher geht bei original verschlossenen Verpackungen im allgemeinen von einem unversehrten Produktinhalt aus. Insbesondere mit Noppen versehenene Kunststoffverpackungen für verderbliche Lebensmittel verunsichern den Verbraucher.A disadvantage found in the provided with knobs plastic packaging that the consumer of the sealed packaging usually can not see how much the packaging is still in the unopened original state or whether the packaging has already been opened. Consumers generally assume that the contents of the original sealed packaging are undamaged. Plastic packaging for perishable foodstuffs, in particular with knobs, unsettles the consumer.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine mit mindestens einer Noppe versehene Kunststoffverpackung zur Verfügung zu stellen, die die Nachteile des Standes der Technik nicht aufweist.The present invention is therefore based on the object to provide a provided with at least one knob plastic packaging that does not have the disadvantages of the prior art.

Gelöst wird diese Aufgabe durch die Bereitstellung einer Kunststoffverpackung aus einer Verpackungsmulde und einer Deckelfolie, wobei die Deckelfolie im Siegelbereich mindestens teilweise peelbar an die Verpackungsmulde gesiegelt ist und die Deckelfolie oder die Verpackungsmulde mindestens eine Noppe und die Verpackungsmulde oder die Deckelfolie komplementär dazu mindestens eine Aussparung aufweist, durch die die Noppe(n) beim Verschließen der Kunststoffverpackung gesteckt wird bzw. werden, wobei mindestens ein Teilbereich mindestens einer Noppe mit einem Siegelmaterial versehen ist oder vorzugsweise mindestens ein Teilbereich mindestens einer Noppe und der Randbereich der komplementären Ausspaarung mit einem Siegelmaterial verbunden sind, das beim erstmaligen Öffnen der Verpackung beschädigt wird.This object is achieved by the provision of a plastic packaging from a packaging tray and a cover film, wherein the lid film is sealed in the sealing region at least partially peelable to the packaging tray and the lid film or the packaging tray at least one nub and the packaging tray or lid film complementary to at least one Recess has, through which the knob (s) is inserted when sealing the plastic packaging or, wherein at least a portion of at least one knob is provided with a sealing material or preferably at least a portion of at least one knob and the edge region of the complementary Ausspaarung connected to a sealing material are damaged when opening the package for the first time.

Eine Verpackungsmulde im Sinne der Erfindung ist jede dem Fachmann geläufige Verpackungsmulde, die aus einer, vorzugsweise für die Verpackung von Lebensmitteln üblichen, thermoplastischen und formstabilen Ein- oder Mehrschichtfolie hergestellt wurde.
Die Folie muß an mindestens einer ihrer beiden Oberflächen eine Siegelschicht aufweisen, die peelfähig ist. Als Siegelschicht wird vorzugsweise eine Mischung aus LDPE (Low Density Polyethylen) und einem Polybutylen verwendet. Die Mischung enthält vorzugsweise 15 bis 30 Gew.%, besonders bevorzugt 20 bis 28 Gew.% Polybutylen. Vorzugsweise weist das Polybutylen einen Schmelzindex (MFI) im Bereich von 0,3 bis 2,0 g/10 min (190°C und 216 kg gemäß ASTM 1238) auf.
Besonders bevorzugt wird die Verpackungsmulde aus einer mehrschichtigen Folie mit einer geschäumten Trägerfolie, vorzugsweise einer geschäumten Polyolefinfolie, besonders bevorzugt Polypropylenfolie, hergestellt.
Ganz besonders bevorzugt wird die Verpackungsmulde aus einer Folie hergestellt, wie sie in der Patentanmeldung mit dem Aktenzeichen des Deutschen Patentamtes 198 40 046.2 offenbart ist. Diese Patentanmeldung wird hiermit als Referenz eingeführt und gilt somit als Teil der Offenbarung.
Die thermogeformten, vorzugsweise tiefgezogenen Verpackungsmulden, werden nach dem Befüllen mit dem Verpackungsgut mit einer dem Fachmann geläufigen, vorzugsweise tiefziehbaren Deckelfolie verschlossen. Als Deckelfolien eignen sich insbesondere Mehrschichtfilme mit einer Gassperrschicht aus Ethylenvinylalkoholcopolymer, vorzugsweise aus Polyethylenterephtalat(PET)/Haftvermittlerschicht/Polyethylen/Haftvermittlerschicht/Ethylen-Vinylalkoholcopolymer/Haftvermittlerschicht/Polyethylen, wobei die Polyethylenterephtalatschicht durch Polypropylen ersetzt sein kann.
Sofern die Deckelfolie der erfindungsgemäßen Verpackung die Aussparung aufweist, kann sie auch als Gassperrschicht SiOx aufweisen. Vorzugsweise ist dann die Deckelfolie aus PET/SiOx/Haftvermittler/Polyethylen aufgebaut.A packaging tray in the sense of the invention is any packaging tray familiar to the person skilled in the art, which has been produced from a thermoplastic and dimensionally stable single-layer or multi-layer film which is preferably customary for the packaging of foods.
The film must have on at least one of its two surfaces a sealing layer which is peelable. The sealing layer used is preferably a mixture of LDPE (low density polyethylene) and a polybutylene. The mixture preferably contains 15 to 30% by weight, particularly preferably 20 to 28% by weight, of polybutylene. Preferably, the polybutylene has a melt index (MFI) in the range of 0.3 to 2.0 g / 10 min (190 ° C and 216 kg according to ASTM 1238).
Particularly preferably, the packaging tray is produced from a multilayer film with a foamed carrier film, preferably a foamed polyolefin film, particularly preferably polypropylene film.
Most preferably, the packaging tray is made of a film, as disclosed in the patent application with the file number of the German Patent Office 198 40 046.2. This patent application is hereby incorporated by reference and thus forms part of the disclosure.
The thermoformed, preferably thermoformed packaging trays are closed after filling with the packaged product with a specialist, familiar, preferably thermoformable lidding film. Particularly suitable as lid films are multilayer films with a gas barrier layer of ethylene vinyl alcohol copolymer, preferably of polyethylene terephthalate (PET) / adhesion promoter layer / polyethylene / adhesion promoter layer / ethylene / vinyl alcohol copolymer / adhesion promoter layer / polyethylene, wherein the polyethylene terephthalate layer may be replaced by polypropylene.
If the cover film of the packaging according to the invention has the recess, it may also have SiO x as a gas barrier layer. Preferably, then the cover sheet of PET / SiO x / adhesion promoter / polyethylene is constructed.

Die Deckelfolie wird erfindungsgemäß an die Verpackungsmulde im Siegelbereich gesiegelt, wobei die Deckelfolie mindestens teilweise peelbar an die Verpackungsmulde gesiegelt wird. Für die peelfähige Siegelung wird die Deckelfolie bei einer Temperatur von 130°C bis 150°C, vorzugsweise von 135 bis 145°C, und einem Druck von 3 bis 8 x 105 N/m2, vorzugsweise von 4,0 bis 5,0 x 105 N/m2 an die Verpackungsmulde gesiegelt. Sofern die erfindungsgemäßen Verpackungen einen nicht peelbaren, d. h. fest gesiegelten Teilbereich des Siegelbereiches aufweisen sollen, so wird die feste Siegelung vorzugsweise bei einer mindestens 10°C höheren Temperatur und vorzugsweise dem zweifachen Druck durchgeführt im Vergleich zur peelbaren Siegelung. Eine feste Siegelung im Sinne der Erfindung ist eine Siegelung, bei der die Ablösekraft der Deckelfolie um mindestens das Fünffache höher sein muß als im Bereich der peelbaren Siegelung.The lid film is sealed according to the invention to the packaging tray in the sealing area, wherein the lidding film is at least partially peelable sealed to the packaging tray. For peelable sealing, the lidding film is heated at a temperature of from 130 ° C to 150 ° C, preferably from 135 to 145 ° C, and a pressure of from 3 to 8 x 10 5 N / m 2 , preferably from 4.0 to 5, 0 x 10 5 N / m 2 sealed to the packaging tray. If the packages according to the invention are to have a non-peelable, ie tightly sealed, portion of the seal area, then the solid seal is preferably carried out at a temperature at least 10 ° C. and preferably at twice the pressure in comparison to the peelable seal. A solid seal in the sense of the invention is a seal in which the detachment force of the cover film must be at least five times higher than in the area of the peelable seal.

Der Siegelbereich an der Verpackungsmulde befindet sich vorzugsweise auf einer waagerechten Ebene, vorzugsweise oberhalb des Verpackungsgutes und erstreckt sich vorzugsweise auf dieser Ebene um das gesamte Verpackungsgut herum. Bei einer vieleckigen Kunststoffverpackung kann die Deckelfolie an vorzugsweise mindestens einer Seite dieses Vielecks mit der Verpackungsmulde fest gesiegelt, während die Deckelfolie in dem verbleibenden Siegelbereich peelfähig mit der Verpackungsmulde gesiegelt ist. Bei einer runden Verpackung kann vorzugsweise 5-25% des Siegelbereiches mit einer festen Siegelung versehen sein.The sealing area on the packaging tray is preferably located on a horizontal plane, preferably above the packaged goods, and preferably extends around the entire packaged goods on this level. In a polygonal plastic packaging, the lidding film may be firmly sealed to preferably at least one side of this polygon with the packaging tray, while the lidding film in the remaining sealing area is peelably sealed to the packaging tray. For a round package, preferably 5-25% of the sealing area may be provided with a solid seal.

Erfindungsgemäß weist die Verpackungsmulde oder die Deckelfolie mindestens eine Aussparung auf, die sich vorzugsweise auf der waagerechten Ebene oberhalb des Verpackungsgutes befindet. Die Aussparung kann eine beliebige Form und Größe haben, die jedoch mit der Form der Noppe kompatibel sein muß. Vorzugsweise ist die Aussparung näherungsweise kreisförmig mit einem Durchmesser von 3 bis 12 mm, vorzugsweise von 4 bis 9 mm. Die Aussparung wird vorzugsweise in die Verpackungsmulde oder die Deckelfolie gebohrt oder gestanzt, wobei Stanzen besonders bevorzugt ist.
Ebenfalls erfindungsgemäß weist die Deckelfolie oder die Verpackungsmulde mindestens eine Noppe auf, die zur Aussparung in der Verpackungsmulde oder die Deckelfolie komplementär angeordnet ist und deren Form mit der Form der Aussparung so kompatibel sein muß, daß sie durch die Aussparung gesteckt werden kann und dort verbleibt. Vorzugsweise hat die Noppe näherungsweise die Form eines Zylinders, dessen Durchmesser vorzugsweise von 3 bis 12 mm und dessen Länge vorzugsweise von 3 bis 15 mm, besonders bevorzugt 4 bis 8 mm, beträgt. Ganz besonders bevorzugt ist der Durchmesser der Noppe ≤ dem Durchmesser der näherungsweise kreisförmigen Aussparung.According to the invention, the packaging tray or the cover sheet has at least one recess, which is preferably located on the horizontal plane above the packaged goods. The recess may have any shape and size, but must be compatible with the shape of the knob. Preferably, the recess is approximately circular with a diameter of 3 to 12 mm, preferably 4 to 9 mm. The recess is preferably drilled or punched into the packaging tray or lid film, punching being particularly preferred.
Also according to the invention, the lidding foil or the packaging trough has at least one nub, which is arranged complementary to the recess in the packaging trough or the cover foil and whose shape must be compatible with the shape of the recess so that it can be inserted through the recess and remains there. Preferably, the knob has approximately the shape of a cylinder whose diameter is preferably from 3 to 12 mm and whose length is preferably from 3 to 15 mm, particularly preferably 4 to 8 mm. Most preferably, the diameter of the nub ≤ the diameter of the approximately circular recess.

Vorzugsweise wird/werden die Noppe(n) bzw. die Aussparung(en) näher am Außenrand der Kunststoffverpackung angeordnet als der Siegelbereich.Preferably, the nub (s) or the recess (s) is / are arranged closer to the outer edge of the plastic packaging than the sealing area.

Sofern ein fester Siegelbereich vorhanden ist, werden die Noppe(n) bzw. die komplementäre(n) Aussparung(en) vorzugsweise so an der Kunststoffverpackung angebracht, daß sie außerhalb des Bereichs der festen Siegelung, bevorzugt diametral gegenüber liegen. Diese Anordnung hat den Vorteil, daß die Deckelfolie gespannt und dann mit dem/den Noppenverschlüssen fest jedoch wieder lösbar verbunden werden kann.If a fixed seal area is present, the nub (s) or the complementary recess (s) are preferably attached to the plastic package so that they are outside the range of the solid seal, preferably diametrically opposite. This arrangement has the advantage that the cover sheet can be stretched and then firmly but releasably connected to the / the knob fasteners.

In einer bevorzugten Verpackungsform weist die Deckelfolie die Aussparung(en) und die Verpackungsmulde die Noppe(n) auf.In a preferred packaging form, the lidding film has the recess (s) and the packaging tray has the nub (s).

Vorzugsweise kann die erfindungsgemäße Kunststoffverpackung zusätzliche Mittel zur Wiederverschließung der Verpackung aufweisen. Solche Mittel sind vorzugsweise ein Reißverschluß, wie z.B. in der EP 0 621 197 A1 offenbart, eine Dichtlippe, ein Schnappverschluß, wie in der EP 0 427 512 offenbart oder ein Klettverschluß wie in der Parallelanmeldung mit dem internen Aktenzeichen CH 8006 offenbart ist. Diese Veröffentlichungen bzw. die Parallelanmeldung werden hiermit als Referenz eingeführt und sind somit Teil der Offenbarung.The plastic packaging according to the invention may preferably have additional means for reclosing the packaging. Such means are preferably a zipper, e.g. in EP 0 621 197 A1 discloses a sealing lip, a snap closure, as disclosed in EP 0 427 512 or a hook and loop fastener as disclosed in the copending application with the internal file number CH 8006. These publications and the copending application are hereby incorporated by reference and are thus part of the disclosure.

Bei den erfindungsgemäßen Verpackungen ist mindestens ein Teilbereich mindestens einer Noppe mit einem Siegelmaterial versehen, vorzugsweise mindestens ein Teilbereich mindestens einer Noppe und der Randbereich der komplementären Ausspaarung mit einem Siegelmaterial verbunden, das beim erstmaligen Öffnen der Verpackung beschädigt wird.In the case of the packagings according to the invention, at least one subregion of at least one nub is provided with a sealing material, preferably at least one subregion of at least one nub and the edge region of the complementary recess is connected to a sealing material which is damaged when the packaging is opened for the first time.

Die durch das erstmaligen Öffnen der Verpackung verursachte Beschädigung des Siegelmaterials wird vorzugsweise als ein Bruch und/oder durch zumindestens teilweises Abfallen von mindestens einem Teil des Siegelmaterials und/oder durch eine Deformation mindestens eines Teils des Siegelmaterials ausgeführt, wobei die Beschädigung vorzugsweise ohne technische Hilfsmittel erkennbar ist.The damage to the sealing material caused by the initial opening of the package is preferably carried out as a fracture and / or at least partial fall off of at least a portion of the sealing material and / or deformation of at least a portion of the sealing material, the damage preferably being detectable without technical aids is.

Eine Beschädigung, die ohne technische Hilfsmittel erkennbar ist, ist eine Beschädigung, die ohne weiteres zu sehen und/oder zu erfühlen. Fühlbare Beschädigungen sind insbesondere für sehbehinderte Konsumenten von großem Vorteil.Damage that can be detected without technical aids is damage that is easy to see and / or feel. Tangible damage is of great advantage especially for visually impaired consumers.

In einer bevorzugten Ausführungsform unterscheidet sich die Farbe des Siegelmaterials von der Farbe der Kunststoffverpackung. Besonders bevorzugt sind deutliche bzw. krasse Farbunterschiede, beispielsweise Weiß und Schwarz oder Gelb und Rot.In a preferred embodiment, the color of the sealing material differs from the color of the plastic packaging. Particular preference is given to distinct or stark color differences, for example white and black or yellow and red.

In einer weiteren bevorzugten Ausführungsform weist ein beschädigtes Siegelmaterial eine vom unbeschädigten Siegelmaterial unterschiedliche Textur auf, die insbesondere von sehbehinderten Kunden leicht zu erfühlen ist.In a further preferred embodiment, a damaged sealing material has a different texture from the undamaged sealing material, which is easy to feel, especially by visually impaired customers.

In einer noch weiteren bevorzugten Ausführungsform der Erfindung weist die Oberfläche des Versiegelungsmaterials eine andere Farbe auf als das Siegelmaterial selbst, wobei eine Beschädigung des Siegelmaterials zur Sichtbarmachung des von der Versiegelungsoberfläche andersfarbigen Versiegelungsmaterials führt.In yet another preferred embodiment of the invention, the surface of the sealing material has a different color than the sealing material itself, with damage to the sealing material resulting in visualization of the sealing material differently colored from the sealing surface.

In einer anderen bevorzugten Ausführungsform weist das Siegelmaterial bei der Anbringung an die Verpackungsnoppe selbst eine ausreichende Adhesionskraft auf, die die Befestigung an einer Noppe, vorzugsweise an einer Noppe und dem Randbereich einer komplementären Ausspaarung, die Lagerung und den üblichen Transport der Kunststoffverpackung gewährleistet, wobei das erstmalige Öffnen der Kunststoffverpackung zumindestens ein teilweises Abtrennen oder eine Deformation, vorzugsweise einen Bruch und besonders bevorzugt das vollständige Abtrennen des Siegelmaterials von der Kunststoffverpackung bewirkt.
Eine solche ausreichende Adhesionskraft kann gegebenenfalls unter Anlösen mit einem lösungsmittel und/oder Erwärmen realisiert werden.In another preferred embodiment, when attached to the dunnage itself, the sealing material has sufficient adhesive force to secure it to a nub, preferably to a nub and the peripheral area of a complementary spall, to the storage and conventional transport of the plastic wrapping first opening the plastic packaging at least a partial separation or deformation, preferably a break and particularly preferably causes the complete separation of the sealing material of the plastic packaging.
Such a sufficient adhesion force may optionally be realized by dissolving with a solvent and / or heating.

In einer wiederum anderen bevorzugten Ausführungsform finden als Siegelmaterialien natürliche oder synthetische Wachse oder Kunststoffe Verwendung. Besonders bevorzugt sind Kunststoffe, die unter Lufteinfluß und/oder Wärme und/oder Strahlung so härten, daß das Siegelmaterial derart spröde wird, daß es leicht zu beschädigen ist.In yet another preferred embodiment, the sealing materials used are natural or synthetic waxes or plastics. Particularly preferred are plastics that cure under the influence of air and / or heat and / or radiation so that the sealing material is so brittle that it is easy to damage.

Vorzugsweise sind die Siegelmaterialien selbstklebend. Besonders bevorzugt sind hierbei Siegelmaterialien, die im erhitzten Zustand selbstklebend sind.Preferably, the sealing materials are self-adhesive. Particularly preferred in this case are sealing materials which are self-adhesive in the heated state.

In einer weiteren bevorzugten Ausführungsform werden Siegelmaterialien mittels eines Klebematerials auf mindestens eine Noppe, vorzugsweise mindestens eine Noppe und den Randbereich der komplementären Aussparung aufgebracht.In a further preferred embodiment sealing materials are applied by means of an adhesive material to at least one nub, preferably at least one nub and the edge region of the complementary recess.

Ganz besonders bevorzugt sind Versiegelungsmaterialien, die derart spröde sind, daß sie beim erstmaligen Öffnen der Verpackung brechen.Very particular preference is given to sealing materials which are so brittle that they break when the package is opened for the first time.

Vorzugsweise sind die mit Noppen versehen erfindungsgemäßen Verpackungen wiederverschließbar.Preferably, the packages provided with nubs according to the invention are resealable.

Besonders bevorzugt werden in der erfindungsgemäßen Verpackung Lebensmittel, vorzugsweise feste, besonders bevorzugt frische oder gekochte Fleisch- oder Wurstwaren, verpackt.Foodstuffs, preferably solid, particularly preferably fresh or cooked meat or sausage products, are particularly preferably packaged in the packaging according to the invention.

Die erfindungsgemäße Kunststoffverpackung wird vorzugsweise hergestellt, indem die Verpackungsmulde durch Tiefziehen einer Folie gebildet wird. Danach oder gleichzeitig wird eine Aussparung in der Verpackungsmulde angebracht, vorzugsweise durch Stanzen, oder durch Thermoverformung eine Noppe gebildet. In dem folgenden Verfahrensschritt wird die Verpackungsmulde gegebenenfalls befüllt und dann eine Deckelfolie auf die Verpackungsmulde gesiegelt, wobei vor dem Siegeln gegebenenfalls ein Gasaustausch zur Verlängerung der Haltbarkeit des Lebensmittels in der Verpackung vorgenommen wird.
Danach oder gleichzeitig mit dem Siegeln wird vorzugsweise durch Thermoverformung der Deckelfolie mindestens eine Noppe hergestellt oder mindestens eine Aussparung ausgestanzt. Die Herstellung einer Noppe erfolgt vorzugsweise mit einem Stempel oder mit Druckluft, mit dem/mit der das zu verformende Material durch die Aussparung gedrückt wird.
Nachdem das Produkt in der Verpackung verschlossen ist wird mindestens auf eine Noppe, vorzugsweise auf eine Noppe und den Randbereich der komplementären Aussparung ein Siegelmaterial aufgebracht.The plastic packaging according to the invention is preferably produced by the packaging tray is formed by deep drawing a film. Thereafter, or at the same time, a recess is made in the packaging tray, preferably formed by punching, or by thermoforming a nub. In the following process step, the packaging tray is optionally filled and then sealed a lid sheet on the packaging tray, wherein prior to sealing optionally a gas exchange to extend the shelf life of the food in the packaging is made.
Thereafter, or simultaneously with the sealing, at least one nub is preferably produced by thermoforming of the cover film or at least one recess is punched out. The production of a nub takes place preferably with a stamp or with compressed air, with the / with which the material to be deformed is pressed through the recess.
After the product has been sealed in the packaging, a sealing material is applied to at least one nub, preferably a nub, and the edge region of the complementary recess.

Die erfindungsgemäßen Verpackungen ermöglichen es dem Verbraucher schnell und zweifelsfrei den Originalverpackungszustand ihres Produkts zu erkennen. Insbesondere bei ursprünglich luftdicht verpackten und nach dem erstmaligen Öffnen wiederverschlossenen Lebensmittelverpackungen kann der Verbraucher aus der Unversehrtheit oder Beschädigung des Siegelmaterials auf den Zustand des Verpackungsinhalts schließen, ohne das Produkt selbst in Augenschein zu nehmen oder eingehend zu untersuchen.
Mit einer erfindungsgemäßen durch mindestens eine Noppe wiederverschließbare Kunststoffverpackung ist es möglich, eine einmal geöffnete Verpackung gut und doch wieder lösbar zu verschließen. Das Verschließen bzw. Öffnen ist für den Benutzer leicht durchführbar. Die Kunststoffverpackung ist einfach und kostengünstig herzustellen.The packages according to the invention make it possible for the consumer to quickly and unambiguously recognize the original packaging state of their product. Particularly in the case of food packagings which have been originally packaged in an airtight manner and which have been resealed after initial opening, the consumer can infer the integrity or damage of the sealing material to the condition of the contents of the pack without having to inspect the product itself or thoroughly examine it.
With a plastic packaging which can be reclosed by at least one pimple according to the invention, it is possible to seal a once-opened packaging in a good and yet releasable manner. The closing or opening is easy for the user to carry out. The plastic packaging is simple and inexpensive to manufacture.

In einem weiteren Aspekt betrifft die vorliegende Erfindung auch die Verfahren zur Herstellung der erfindungsgemäßen Kunststoffverpackungen. Erfindungsgemäß umfassen solche Verfahren die folgenden Schritte:

  • 1. die Herstellung einer Verpackungsmulde durch Thermoverformen aus einer Folie, und
    entweder
  • 2. das Anbringen mindestens einer Aussparung in der Verpackungsmulde, vorzugsweise durch Stanzen,
  • 3. gegebenenfalls das Befüllen der Verpackungsmulde,
  • 4. die Versiegelung einer Deckelfolie an die Verpackungsmulde und
  • 5. die Herstellung einer komplementären Noppe durch Thermoverformung der Deckelfolie,
    oder
  • 2a. Formung mindestens einer Noppe in dem Randbereich der gemäß 1. gebildeten Verpackungsmulde und
  • 4a. Aufbringen in die Deckelfolie vor oder beim Versiegeln mit der Verpackungsmulde mindestens eine komplementäre Verpackung aufgebracht wird,
wobei mindestens ein Teilbereich mindestens einer Noppe mit einem Siegelmaterial versehen ist oder vorzugsweise mindestens ein Teilbereich mindestens einer Noppe und der Randbereich der komplementären Ausspaarung mit einem Siegelmaterial verbunden sind, das beim erstmaligen Öffnen der Verpackung beschädigt wird.In a further aspect, the present invention also relates to the processes for producing the plastic packaging according to the invention. According to the invention, such methods include the following steps:
  • 1. the production of a packaging tray by thermoforming of a film, and
    either
  • 2. the attachment of at least one recess in the packaging tray, preferably by punching,
  • 3. optionally filling the packaging tray,
  • 4. the sealing of a lid foil to the packaging tray and
  • 5. the production of a complementary nub by thermoforming of the cover film,
    or
  • 2a. Forming at least one nub in the edge region of the packaging tray formed according to FIG
  • 4a. Application in the cover film before or during sealing with the packaging tray at least one complementary packaging is applied,
wherein at least a portion of at least one nub is provided with a sealing material, or preferably at least a portion of at least one nub and the edge region of the complementary Ausspaarung are connected to a sealing material, which is damaged when first opening the packaging.

Im Folgenden wird die Erfindung anhand der Figuren 1 bis 3 erläutert. Die Erläuterungen sind lediglich beispielhaft und schränken den allgemeinen Erfindungsgedanken nicht ein.The invention is explained below with reference to FIGS. 1 to 3. The explanations are merely exemplary and do not limit the general inventive concept.

Figur 1 zeigt eine mit Noppen versehene Kunststoffverpackung.
Figur 2 zeigt eine weitere mit Noppen versehene Kunststoffverpackung.
Figur 3 zeigt Ausschnitte der erfindgungsgemäßen Kunststoffverpackung vor und nach dem Öffnen. Figure 1 shows a provided with knobs plastic packaging.
Figure 2 shows another provided with knobs plastic packaging.
FIG. 3 shows sections of the plastic packaging according to the invention before and after opening.

Figur 1 zeigt eine erfindungsgemäße Kunststoffverpackung 1, die aus einer Verpackungsmulde 2 und einer Deckelfolie 3 besteht. Die Verpackung weist einen Siegelbereich 4 auf, der waagerecht angeordnet ist und sich um die gesamte Verpackungsmulde 2 herum erstreckt. In diesem Siegelbereich 4 ist die Deckelfolie 3 an die Verpackungsmulde 2 gesiegelt, wobei die Deckelfolie in dem schwach gepunkteten Abschnitt des Siegelbereiches 4 peelbar an die Verpackungsmulde gesiegelt ist, während sie in dem stark gepunkteten Abschnitt des Siegelbereiches 4 fest an die Verpackungsmulde gesiegelt ist. Bei Öffnen wird die Deckelfolie nur an drei Seiten von der Verpackungsmulde abgezogen und bleibt im Abschnitt der festen Siegelung mit dieser verbunden. Die Deckelfolie, eine halbsteife Polyethylenterephtalat/EVOH/Polyethylen-Polybutylen-Folie, weist zwei näherungsweise zylinderförmige Noppen auf, die eine Länge von 4 mm und einen Durchmesser von 7 mm haben. Die Noppen 5 sind durch Thermoverformung mit einem Stempel in die Deckelfolie geprägt worden. Die Verpackungsmulde 2 weist zwei näherungsweise kreisförmige Aussparungen 6 auf, die den Noppen 5 gegenüberliegend angeordnet sind und einen Durchmesser von 7 mm haben.
Der Fachmann erkennt, daß die Noppen 5 bzw. Aussparungen 6 auch an anderen Stellen der Kunststoffverpackung angeordnet und/oder neben den dargestellten zwei noch weitere Noppen/Aussparungen vorhanden sein können.
Der Fachmann erkennt ferner, daß neben den Noppen noch weitere Wiederverschließungsmittel an der Verpackungsmulde bzw. der Deckelfolie angeordnet sein können.
Nach dem Öffnen der Deckelfolie kann die Verpackung wieder verschlossen werden, indem die Noppen 5 in die Aussparungen 6 gedrückt werden und dort verbleiben, bis die Deckelfolie wieder abgezogen und die Noppen damit aus den Aussparungen gezogen werden. FIG. 1 shows a plastic packaging 1 according to the invention, which consists of a packaging tray 2 and a cover film 3. The packaging has a sealing area 4, which is arranged horizontally and extends around the entire packaging cavity 2 around. In this sealing area 4, the lidding film 3 sealed to the packaging tray 2, wherein the lidding film is peelably sealed in the weakly dotted portion of the sealing area 4 to the packaging tray, while it is sealed in the highly dotted portion of the sealing area 4 to the packaging tray. When opened, the lidding foil is pulled off the packaging tray only on three sides and remains connected to it in the section of the solid seal. The lidding film, a semi-rigid polyethylene terephthalate / EVOH / polyethylene-polybutylene film, has two approximately cylindrical knobs that are 4 mm in length and 7 mm in diameter. The nubs 5 have been embossed by thermoforming with a stamp in the lidding film. The packaging tray 2 has two approximately circular recesses 6, which are arranged opposite the knobs 5 and have a diameter of 7 mm.
The skilled artisan will appreciate that the nubs 5 and recesses 6 can also be arranged at other locations of the plastic packaging and / or in addition to the illustrated two even more nubs / recesses may be present.
The skilled artisan will further recognize that, in addition to the nubs, further reclosing means may be disposed on the packaging tray or lid film.
After opening the cover film, the package can be closed again by the nubs 5 are pressed into the recesses 6 and remain there until the cover sheet pulled off again and the knobs are pulled out of the recesses.

Figur 2 stellt eine Kunststoffverpackung 1 gemäß Figur 1 dar, wobei jedoch die Noppen 5 in der Verpackungsmulde 4 und die Aussparung 6 in der Deckelfolie 3 ausgeführt sind. FIG. 2 shows a plastic packaging 1 according to FIG. 1, but with the nubs 5 in the packaging trough 4 and the recess 6 in the cover film 3.

Figuren 3 A bis F zeigen Ausschnitte der erfindungsgemäßen Kunststoffverpackung vor und nach dem Öffnen in Seitenansicht. Figures 3 A to F show sections of the plastic packaging according to the invention before and after opening in side view.

Legende der Figuren 3 A-FLegend of Figures 3 A-F

77
Randbereich der zur Noppe 5 komplementären AussparungEdge region of the nub 5 complementary recess
88th
Siegelbereich einer Verpackungsmulde oder DeckelfolieSealing area of a packaging tray or lid film
55
Noppe im Siegelbereich einer Verpackungsmulde oder DeckelfolieNub in the sealing area of a packaging tray or lid film
99
Siegelmaterial an einer Noppe 5 oder Siegelmaterial an einer Noppe 5 und dem Randbereich der zur Noppe komplementären AussparungSealing material on a nub 5 or sealing material on a nub 5 and the edge region of the nub complementary recess

Figur 3 A zeigt eine Noppe 5, von der ein Teilbereich mit Siegelmaterial 9 versehen ist.
Figur 3 B zeigt eine Noppe 5, von der ein Teilbereich mit Siegelmaterial 9 versehen ist, wobei das Siegelmaterial eine Verbindung zwischen der Noppe 5 und dem Randbereich der zur Noppe komplementären Aussparung 7 bildet.
Figur 3 C zeigt den Gegenstand von Figur 3 A, nachdem das Siegelmaterial 9 durch Bruch beim erstmaligen Öffnen einer Verpackung 1 beschädigt wurde.
Figur 3D zeigt den Gegenstand von Figur 3 B, nachdem das Siegelmaterial 9 durch Bruch beim erstmaligen Öffnen einer Verpackung 1 beschädigt wurde.
Figur 3E zeigt den Gegenstand von Figur 3 A, nachdem das Siegelmaterial 9 durch Deformation beim erstmaligen Öffnen einer Verpackung 1 beschädigt wurde.
Figur 3F zeigt den Gegenstand von Figur 3 B, nachdem das Siegelmaterial 9 durch Deformation beim erstmaligen Öffnen einer Verpackung 1 beschädigt wurde. Figure 3 A shows a nub 5, of which a partial area is provided with sealing material 9.
FIG. 3B shows a nub 5, of which a partial area is provided with sealing material 9, wherein the sealing material forms a connection between the nub 5 and the edge area of the recess 7 complementary to the nub.
FIG. 3C shows the article of FIG. 3A after the sealing material 9 has been damaged by breakage when a package 1 is first opened.
FIG. 3D shows the article of FIG. 3B after the sealing material 9 has been damaged by breakage during the first opening of a package 1.
FIG. 3E shows the article of FIG. 3A after the sealing material 9 has been damaged by deformation when a package 1 is opened for the first time.
FIG. 3F shows the article of FIG. 3B after the sealing material 9 has been damaged by deformation when a package 1 is opened for the first time.

Claims (16)

  1. Plastic packaging (1) comprising a packaging cavity (2) and a cover film (3), the cover film (3) being sealed in the sealing region (4) to the packaging cavity so as to be at least partly peelable, the cover film (3) or the packaging cavity (2) having at least one knob (5) and the packaging cavity (2) or the cover film (3) having at least one recess (6) complementary to the knob, through which the knob(s) is or are pushed upon sealing the plastic packaging
    characterized in that
    at least one partial region of at least one knob (5) is provided with a sealing material (9), or preferably at least one partial region of at least one knob (5) and the edge region of the complementary recess (7) are connected with a sealing material (9), which is damaged upon first opening of the packaging.
  2. Plastic packaging (1) according to Claim 1, characterized in that the damage is a break, an at least partial falling-away and/or a deformation of the sealing material (9).
  3. Plastic packaging (1) according to Claim 1 or 2, characterized in that the damage can be detected without technical assistance.
  4. Plastic packaging (1) according to Claims 1 to 3, characterized in that the sealing material (9) has a colour that is different, preferably clearly different, from the colour of the plastic packaging (1).
  5. Plastic packaging (1) according to Claims 1 to 4, characterized in that the sealing material (9) itself has a colour and the surface of the sealing material (9) has a different colour, first opening of the plastic packaging (1) damaging the surface colour of the sealing material (9) in such a way that the colour of the underlying sealing material (9) becomes visible.
  6. Plastic packaging (1) according to Claims 1 to 5, characterized in that the sealing material (9) has sufficient adhesive strength to ensure securing to a knob (5), preferably to a knob (5) and the edge region of a complementary recess (7), the storage and customary transport of the plastic packaging, first opening of the plastic packaging (1) causing the sealing material (9) at least partially to fall away and/or deform, preferably break and, particularly preferably, causing the sealing material (9) to fall away completely from the plastic packaging (1).
  7. Plastic packaging (1) according to Claims 1 to 6, characterized in that the sealing material (9) is a natural or synthetic wax or a plastic, preferably a plastic which hardens under the effect of air and/or heat and/or radiation such that the sealing material (9) becomes so brittle that it is easily damaged when the packaging (1) is opened.
  8. Plastic packaging (1) according to Claims 1 to 7, characterized in that the sealing material (9) is self-adhesive, preferably self-adhesive in a heated state.
  9. Plastic packaging (1) according to Claims 1 to 8, characterized in that the sealing material (9) is applied to at least one knob (5), preferably to at least one knob (5) and the edge region of the complementary recess (7), using an adhesive material.
  10. Plastic packaging (1) according to Claims 1 to 9, characterized in that the sealing material (9) is brittle and breaks upon first opening of the plastic packaging (1).
  11. Plastic packaging (1) according to Claims 1 to 10, characterized in that the packaging (1) is resealable, preferably resealable by the introduction of at least one knob (5) into a recess (6).
  12. Plastic packaging (1) according to one of Claims 1 to 11, characterized in that the cover film (3) is made of a thermoformable film of polyethylene terephthalate or polypropylene, where appropriate with an ethylene vinyl alcohol copolymer barrier layer and polyethylene, and the packaging cavity (2) is made of a foamed polyolefin film, preferably a foamed polypropylene film, as the basis layer with, where appropriate, a gas barrier layer and a peelable sealing layer.
  13. Plastic packaging (1) according to one of Claims 1 to 12, characterized in that the sealing region (4) is completely peelable.
  14. Plastic packaging (1) according to one of Claims 1 to 12, characterized in that one side or 5-25% of the sealing region is firmly sealed.
  15. Plastic packaging (1) according to Claim 14, characterized in that the knob(s) (5) and complementary recess(es) (6) are located outside the firm sealing region.
  16. Method for the manufacture of a plastic packaging according to one of Claims 1-15, characterized in that
    1. the packaging cavity is produced by thermoforming from a film, either
    2. at least one recess is made, preferably punched, in the packaging cavity,
    3. the packaging cavity is optionally filled,
    4. a cover film is sealed onto the packaging cavity and
    5. the complementary knob is produced by thermoforming the cover film, or
    2a. at least one knob is formed in the edge region of the packaging cavity produced according to 1. and
    4a. at least one complementary packaging is made in the cover film before or during sealing with the packaging cavity,
    characterized in that
    at least one partial region of at least one knob (5) is provided with a sealing material (9), or preferably at least one partial region of at least one knob (5) and the edge region of the complementary recess (7) are connected with a sealing material (9), which is damaged upon first opening of the packaging.
EP02735254A 2001-04-25 2002-04-13 Plastic packaging with at least one sealed knob Expired - Lifetime EP1385755B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10120366A DE10120366A1 (en) 2001-04-25 2001-04-25 Plastic packaging with at least one sealed knob
DE10120366 2001-04-25
PCT/EP2002/004140 WO2002087992A1 (en) 2001-04-25 2002-04-13 Plastic packaging with at least one welded knob

Publications (2)

Publication Number Publication Date
EP1385755A1 EP1385755A1 (en) 2004-02-04
EP1385755B1 true EP1385755B1 (en) 2006-07-12

Family

ID=7682738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02735254A Expired - Lifetime EP1385755B1 (en) 2001-04-25 2002-04-13 Plastic packaging with at least one sealed knob

Country Status (6)

Country Link
US (1) US7322473B2 (en)
EP (1) EP1385755B1 (en)
AT (1) ATE332855T1 (en)
DE (2) DE10120366A1 (en)
NO (1) NO20034772L (en)
WO (1) WO2002087992A1 (en)

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Also Published As

Publication number Publication date
DE50207502D1 (en) 2006-08-24
ATE332855T1 (en) 2006-08-15
DE10120366A1 (en) 2002-10-31
NO20034772D0 (en) 2003-10-24
WO2002087992A1 (en) 2002-11-07
EP1385755A1 (en) 2004-02-04
NO20034772L (en) 2003-12-18
US7322473B2 (en) 2008-01-29
US20040154948A1 (en) 2004-08-12

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