EP0662098B1 - Packaging with cover sheeting for securing products on support trays - Google Patents

Packaging with cover sheeting for securing products on support trays Download PDF

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Publication number
EP0662098B1
EP0662098B1 EP19930919084 EP93919084A EP0662098B1 EP 0662098 B1 EP0662098 B1 EP 0662098B1 EP 19930919084 EP19930919084 EP 19930919084 EP 93919084 A EP93919084 A EP 93919084A EP 0662098 B1 EP0662098 B1 EP 0662098B1
Authority
EP
European Patent Office
Prior art keywords
packaging according
film
approximately
filler
packaging
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
EP19930919084
Other languages
German (de)
French (fr)
Other versions
EP0662098A1 (en
Inventor
Jürgen Schnäbele
Norwin Schmidt
Henning Lüdemann
Anton Wolfsberger
Jürgen Emig
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.)
PCD Polymere GmbH
Solutia Solar GmbH
Original Assignee
PCD Polymere GmbH
BP Chemicals Plastec GmbH
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Filing date
Publication date
Application filed by PCD Polymere GmbH, BP Chemicals Plastec GmbH filed Critical PCD Polymere GmbH
Priority to EP19950107067 priority Critical patent/EP0671432A1/en
Publication of EP0662098A1 publication Critical patent/EP0662098A1/en
Application granted granted Critical
Publication of EP0662098B1 publication Critical patent/EP0662098B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/32—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents
    • B65D75/325—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents one sheet being recessed, and the other being a flat not- rigid sheet, e.g. puncturable or peelable foil
    • B65D75/326—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents one sheet being recessed, and the other being a flat not- rigid sheet, e.g. puncturable or peelable foil and forming one compartment
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/32—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents
    • B65D75/325—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents one sheet being recessed, and the other being a flat not- rigid sheet, e.g. puncturable or peelable foil
    • B65D75/327—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents one sheet being recessed, and the other being a flat not- rigid sheet, e.g. puncturable or peelable foil and forming several compartments
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/252—Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/254—Polymeric or resinous material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers

Definitions

  • the invention relates to packaging with a lower part, optionally adapted to the goods to be packaged in the form of a goods carrier, and an upper part made of a film for tamper-proof covering of the goods carrier, as are known, for example, from a large number of so-called blister packs.
  • Such known packaging includes films for blister covers, which so far consist of aluminum foils, plastic-coated aluminum foils up to pure transparent or opaque plastic foils. These foils form the counterpart to the goods carrier or the so-called lower part of the packaging, which in turn can be formed from a variety of materials, for example from a stable layer of cardboard, a plastic or aluminum shell adapted to the shape of the goods or the like.
  • foils as cover for such packaging, either aluminum foils were used, as is particularly the case with the packaging of pharmaceuticals Products, such as tablets, ampoules or capsules, or a removal option was provided in the lower part of the packaging.
  • a blister pack which comprises an upper part and a lower part made of plastic, the lower part being provided with a perforation so that the packaged goods can be undertaken without the aid of tools of the blister pack.
  • the object of the present invention is to provide a packaging with a film for tamper-proof covering of the product carrier, which can be produced from plastic and yet shows the known push-through properties of aluminum film covers.
  • the film is an unstretched film with a plastic matrix which comprises the latter polyolefins, polyester, polystyrene or styrene copolymers and contains a particulate filler in an amount of 20 to 60% by weight, where the filler has an average particle size (measured over the largest dimension of the particle) of approx. 5 ⁇ m to approx. 100 ⁇ m and the property of weakening the continuous plastic matrix layer is selected so that the puncture resistance of the film is limited to a maximum of approx. 200 N / mm (measured on a 150 ⁇ m thick film, measurement method according to DIN 53 373) is reduced.
  • a plastic matrix which comprises the latter polyolefins, polyester, polystyrene or styrene copolymers and contains a particulate filler in an amount of 20 to 60% by weight, where the filler has an average particle size (measured over the largest dimension of the particle) of approx. 5 ⁇ m to approx. 100 ⁇ m and
  • This limit applies to approximately 150 ⁇ m thick foils. For significantly thinner or thicker foils, the corresponding limit values can be derived from these values. With the specified limit, it is possible to push pressure-insensitive goods through the cover film of the goods carrier, even if with some effort. In the case of more sensitive products, a lower limit value for the puncture resistance is preferably chosen, and this value is then preferably around 100 to around 200 N / mm. Lower puncture resistance may be advisable in individual cases where very pressure-sensitive goods are packed. However, it should be noted that, of course, with the reduction in puncture resistance, the protective effect of the packaging against damage to the goods themselves decreases, so that an optimum can be seen in many cases in the previously specified numerical range from approx. 100 to approx. 200 N / mm.
  • the so-called tear resistance determines the amount of force required to tear open a film once it has been pierced and thus release the product.
  • This property can also be influenced by the choice of the filler and its proportion in the plastic matrix, a tear strength of less than 30 N (measurement method according to DIN 53363) preferably being sought here.
  • This numerical value applies in particular to approximately 150 ⁇ m thick films, but can essentially also be applied to much thinner or thicker films.
  • a value for the tear propagation resistance which is acceptable for handling, in particular also of pressure-sensitive goods, is between approx. 2 to 12 N, whereby again it should be noted that of course much lower values are possible, but with regard to the protection of the goods by the Any reduction limits are set.
  • a preferred range for tear resistance is in the range of 3 to 4 N.
  • the film of the packaging according to the invention contains the filler as a homogeneous admixture with an already fully polymerized plastic material.
  • the filler is therefore not - as is known in connection with filler-reinforced plastics - dispersed in the polymerization reaction mixture of monomer and / or prepolymer and incorporated into the plastic matrix during the curing of the reaction mixture.
  • filler-reinforced plastics dispersed in the polymerization reaction mixture of monomer and / or prepolymer and incorporated into the plastic matrix during the curing of the reaction mixture.
  • fillers are available for the film fillers. These can be selected from inorganic and / or organic substances.
  • the organic substances are e.g. halogenated hydrocarbon polymers, especially PTFE, polyether sulfones, which like the PTFE have a fixed point of> 300 ° C, as well as thermosetting plastics.
  • halogenated hydrocarbon polymers especially PTFE, polyether sulfones, which like the PTFE have a fixed point of> 300 ° C, as well as thermosetting plastics.
  • the organic substances that are to serve as fillers it is important that they do not liquefy when processing the plastic matrix material, at temperatures of 220 ° C. and more, and then form a homogeneous solution with the plastic matrix material, but that they do remain essentially in particle form in the plastic matrix during processing and thus serve to weaken the continuous plastic matrix layer and thus the corresponding reduction in puncture resistance and possibly tear resistance.
  • the substance can be selected from the range of silicon dioxide, in particular in the form of glass or quartz, silicates, in particular in the form of talc, titanates, TiO 2 , aluminum oxide, kaolin, calcium carbonates, in particular in the form of chalk, Magnesite, MgO, iron oxides, silicon carbides, silicon nitrides, barium sulfate or the like.
  • the goods to be packaged and their sensitivity to one or the other additive to the polymer matrix will always have to be taken into account.
  • the shape of the filler particles will most likely be granular, but platelet-like, fibrous or rod-shaped filler particles are both essentially uniform Form or in a mixture with other forms possible as filler particles.
  • the choice of particle size is of course not insignificantly determined by the film layer thickness to be produced. It will therefore be important to ensure that the average expansion of the particles is at a clear distance from the film thickness to be produced. Average particle sizes between 20 ⁇ m and 60 ⁇ m are preferred, in particular with film thicknesses from 80 ⁇ m to 100 ⁇ m.
  • Adhesion promoters of this type are usually used in the production of filled plastics, but in which the particular strength of the material is used.
  • the aim is to ensure that the filler particles are distributed as evenly as possible in the plastic matrix and also maintained during the production process, so that auxiliary agents are preferably added which improve the dispersibility of the filler particles in the matrix.
  • Low-melting organic substances which have great wetting capacity for the filler are particularly suitable as dispersants.
  • Specific examples are low molecular weight polyolefin waxes.
  • the dispersing agents are preferably applied to the filler particles, before they are mixed, in particular kneaded, with the granules of the matrix plastic.
  • the thickness of the film is preferably selected from 20 ⁇ m to approximately 600 ⁇ m, which on the one hand ensures sufficient stability of the film to protect the packaged goods and on the other hand keeps the forces necessary for opening the packaging within the predetermined limit, at least within it Pressure-sensitive goods can still be easily removed from the packaging by pushing through the cover film by the average buyer.
  • the film In particular in the packaging of pharmaceuticals, it is often desirable for the film to be essentially impermeable to water vapor.
  • Preferred polyolefins are seen in polypropylenes.
  • the reason for this is the particularly good physical properties of polypropylene, such as a barrier effect for water vapor, transparency, etc.
  • the average molecular weight of the polymers in the plastic matrix is preferably selected in the range from approximately 10,000 to approximately 300,000.
  • the normal seal strength may be sufficient to solve the above problem.
  • the sealing strength is too low in direct contact of the film with the lower part, the need for an additional sealing layer on the film surface may arise.
  • the film is constructed in two or more layers, the two or more layers of the film preferably being produced in a coextruded manner.
  • an outer film layer is designed as a sealing layer. This can, on the one hand, serve to improve the adhesion of the cover film to the goods carrier and, on the other hand, can have a special property for certain applications, such as e.g. a special water vapor impermeability, etc.
  • the lower part and the upper part are preferably produced using the same type of plastic, so that a pure product is obtained.
  • Such sorted products are particularly easy to recycle and reusable for the same purpose, which is an optimum in the packaging cycle.
  • a particularly preferred use of the packaging according to the invention is the packaging of pharmaceuticals, which are in particular in ampoule, capsule or tablet form.
  • a polymer granulate is mixed with the filler components and then extruded or calendered.
  • the mixing in particular the homogenization, can be carried out by kneading using known processes, in particular twin-screw compounding.
  • twin-screw compounding can be carried out by kneading using known processes, in particular twin-screw compounding.
  • the individual components can also be mixed with one another in a dry mixing process. Better homogeneity, i.e. A more even distribution of the fillers in the polymer matrix is achieved by the upstream production of a so-called compound.
  • the filler particles should always be treated with dispersing aids before they are mixed with the matrix plastic.
  • the compound is melted in the extruder, at melt temperatures of approx. 220 ° C and more and at a melt pressure of up to 250 bar.
  • the melt is preferably cooled using a chill roll at 20 ° C. to approx. 40 ° C., but other cooling processes, optionally combined with a surface treatment with corona discharge, are also possible.
  • the foils are then cut and wrapped.
  • polypropylene As a polymer, consider a homopolymeric polypropylene with a melt index of 2 to 10 g / 10 min according to DIN 53735 (230 ° C / 2.16 kg) and a density (23 ° C) according to DIN 53479 of 0.900 to 0.910 g / cm 3 mentioned.
  • a homopolymeric polypropylene with a melt index of 2 to 10 g / 10 min according to DIN 53735 (230 ° C / 2.16 kg) and a density (23 ° C) according to DIN 53479 of 0.900 to 0.910 g / cm 3 mentioned.
  • different types of polypropylene such as block copolymers or random copolymers, can also be used.
  • the proportion of the fillers in the total film weight is preferably from 25 to 55% by weight. Below a filler content of 20% by weight, there is regularly no longer sufficient embrittlement of the plastic with the associated reduction in puncture resistance and tear resistance. With proportions well over 60% by weight, film production is difficult and the physical strength values are then often no longer sufficient for the typical uses.
  • the polypropylene-based foil according to the invention is also rewound for reasons of recrystallization. (The duration of the post-crystallization is typically 4 to 10 days.)
  • a puncture resistance of 162 N / mm and a tear strength of 3.2 N were measured on this film.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Cartons (AREA)
  • Packages (AREA)
  • Packaging For Recording Disks (AREA)

Abstract

A foil for manipulation-safe coverings of goods consists of a plastic matrix contg. a particle-form filler of a nature and in an amt. such that the puncture resistance of the foil is below 450 N/mm (measured on a foil 150 microns thick).

Description

Die Erfindung betrifft eine Verpackung mit einem gegebenenfalls an die zu verpackenden Waren in der Form angepaßten Unterteil als Warenträger und einem Oberteil aus einer Folie zur manipulationssicheren Abdeckung des Warenträgers, wie sie beispielsweise von einer Vielzahl von sogenannten Blisterpackungen bekannt sind.The invention relates to packaging with a lower part, optionally adapted to the goods to be packaged in the form of a goods carrier, and an upper part made of a film for tamper-proof covering of the goods carrier, as are known, for example, from a large number of so-called blister packs.

Solche bekannten Verpackungen beinhalten Folien für Blister-Abdeckungen, welche bislang aus Aluminiumfolien, kunststoffbeschichteten Aluminiumfolien bis zu reinen transparenten oder opaken Kunststoffolien bestehen. Diese Folien bilden das Gegenstück zu dem Warenträger oder dem sogenannten Unterteil der Verpackung, das wiederum aus einer Vielzahl von Materialien gebildet sein kann, beispielsweise aus einer stabilen Kartonlage, einer an die Form der Ware angepaßten Kunststoff- oder Aluminiumschale oder dergleichen.Such known packaging includes films for blister covers, which so far consist of aluminum foils, plastic-coated aluminum foils up to pure transparent or opaque plastic foils. These foils form the counterpart to the goods carrier or the so-called lower part of the packaging, which in turn can be formed from a variety of materials, for example from a stable layer of cardboard, a plastic or aluminum shell adapted to the shape of the goods or the like.

Bei der Verwendung von Kunststoffolien als Blister-Abdeckung bestand bisher das Problem, daß insbesondere druckempfindliche Waren nicht durch die Folie hindurch gedrückt und so der Verpackung entnommen werden konnten, ohne daß dies zu einer Beschädigung der Waren, insbesondere bei Tabletten, geführt hätte.The problem with the use of plastic films as a blister cover has hitherto been that pressure-sensitive goods in particular cannot be pushed through the film and thus removed from the packaging without causing damage to the goods, particularly in the case of tablets.

Deshalb wurde bei der Verwendung von Folien als Abdeckteil für solche Verpackungen entweder auf Aluminiumfolien zurückgegriffen, wie dies insbesondere bei der Verpackung von pharmazeutischen Produkten, wie z.B. Tabletten, Ampullen oder Kapseln, der Fall ist, oder aber es wurde im Unterteil der Verpackung eine Entnahmemöglichkeit vorgesehen.Therefore, when using foils as cover for such packaging, either aluminum foils were used, as is particularly the case with the packaging of pharmaceuticals Products, such as tablets, ampoules or capsules, or a removal option was provided in the lower part of the packaging.

So ist z.B. aus der DE-U-91 03 973 eine Blisterpackung bekannt welche eine Oberteil und ein Unterteil aus Kunststoff umfaßt, wobei das Unterteil mit einer Perforation versehen ist, damit die verpackete War ohne Zuhilfenahme von Werkzeug der Blisterpackung unternommen werden kann.For example, from DE-U-91 03 973 a blister pack is known which comprises an upper part and a lower part made of plastic, the lower part being provided with a perforation so that the packaged goods can be undertaken without the aid of tools of the blister pack.

Aufgabe der vorliegenden Erfindung ist es, eine Verpackung mit einer Folie zur manipulationssicheren Abdeckung des Warenträgers zu schaffen, welche sich aus Kunststoff herstellen läßt und trotzdem die bekannten Durchdrückeigenschaften von Aluminiumfolienabdeckungen zeigt.The object of the present invention is to provide a packaging with a film for tamper-proof covering of the product carrier, which can be produced from plastic and yet shows the known push-through properties of aluminum film covers.

Diese Aufgabe wird bei der eingangs beschriebenen Verpackung erfindungsgemäß dadurch gelöst, daß die Folie eine ungereckte Folie mit einer Kunststoffmatrix ist, welchletztere Polyolefine, Polyester, Polystyrol oder Styrolcopolymerisate umfaßt, und einen partikelförmigen Füllstoff in einer Menge von 20 bis 60 Gew. % enthält, wobei der Füllstoff eine mittlere Partikelgröße (gemessen über die größte Ausdehnung des Partikels) von ca. 5 µm bis ca. 100 µm aufweist und hinsichtlich seiner Eigenschaft die durchgehende Kunststoffmatrixschicht zu schwächen so ausgewählt ist, daß die Durchstoßfestigkeit der Folie auf einen Grenzwert von maximal ca. 200 N/mm (gemessen an einer 150 µm dicken Folie, Meßmethode nach DIN 53 373) herabgesetzt ist.This object is achieved according to the invention in the packaging described at the outset in that the film is an unstretched film with a plastic matrix which comprises the latter polyolefins, polyester, polystyrene or styrene copolymers and contains a particulate filler in an amount of 20 to 60% by weight, where the filler has an average particle size (measured over the largest dimension of the particle) of approx. 5 µm to approx. 100 µm and the property of weakening the continuous plastic matrix layer is selected so that the puncture resistance of the film is limited to a maximum of approx. 200 N / mm (measured on a 150 µm thick film, measurement method according to DIN 53 373) is reduced.

Dieser Grenzwert gilt für ca. 150 µm dicke Folien. Für deutlich dünnere oder dickere Folien lassen sich von diesen Werten die entsprechenden Grenzwerte ableiten. Bei dem angegebenen Grenzwert ist es möglich, druckunempfindliche Waren durch die Abdeckfolie des Warenträgers durchzudrücken, wenn auch noch mit einigem Kraftaufwand. Bei empfindlicheren Produkten wird man vorzugsweise einen geringeren Grenzwert für die Durchstoßfestigkeit wählen, und bevorzugt liegt dieser Wert dann bei ca. 100 bis ca. 200 N/mm. Geringere Durchstoßfestigkeiten mögen sich in einzelnen Fällen empfehlen, wo sehr drucksensitive Waren verpackt sind. Allerdings ist dabei zu beachten, daß selbstverständlich mit der Herabsetzung der Durchstoßfestigkeit auch die Schutzwirkung der Verpackung gegen Beschädigung der Waren selbst abnimmt, so daß in dem zuvor angegebenen Zahlenbereich von ca. 100 bis ca. 200 N/mm in vielen Fällen ein Optimum zu sehen ist.This limit applies to approximately 150 µm thick foils. For significantly thinner or thicker foils, the corresponding limit values can be derived from these values. With the specified limit, it is possible to push pressure-insensitive goods through the cover film of the goods carrier, even if with some effort. In the case of more sensitive products, a lower limit value for the puncture resistance is preferably chosen, and this value is then preferably around 100 to around 200 N / mm. Lower puncture resistance may be advisable in individual cases where very pressure-sensitive goods are packed. However, it should be noted that, of course, with the reduction in puncture resistance, the protective effect of the packaging against damage to the goods themselves decreases, so that an optimum can be seen in many cases in the previously specified numerical range from approx. 100 to approx. 200 N / mm.

Für die Handhabung der Verpackung durch den Verbraucher, d.h. insbesondere beim Öffnen der Verpackung und damit der Ware, kommt in zweiter Linie eine weitere Eigenschaft ins Spiel, die sogenannte Weiterreißfestigkeit, die den Kraftaufwand bestimmt, der notwendig ist, um eine einmal durchgestoßene Folie weiter aufreißen zu lassen und so das Produkt freizugeben. Auch diese Eigenschaft läßt sich durch die Wahl des Füllstoffes sowie dessen Anteil in der Kunststoffmatrix beeinflussen, wobei hier vorzugsweise eine Weiterreißfestigkeit von weniger als 30 N (Meßmethode nach DIN 53363) angestrebt wird. Dieser Zahlenwert gilt insbesondere für ca. 150 µm dicke Folien, läßt sich aber im wesentlichen auch auf wesentlich dünnere bzw. dickere Folien anwenden. Ein für die Handhabung, insbesondere auch von druckempfindlichen Gütern, akzeptabler Wert der Weiterreißfestigkeit liegt zwischen ca. 2 bis 12 N, wobei auch hier wiederum zu beachten ist, daß natürlich wesentlich geringere Werte möglich sind, aber im Hinblick auf den Schutz der Ware durch die Folie einer beliebigen Verringerung Grenzen gesetzt sind. Ein bevorzugter Bereich für die Weiterreißfestigkeit liegt im Bereich von 3 bis 4 N.For the handling of the packaging by the consumer, i.e. in particular when opening the packaging and thus the goods, another property comes into play, the so-called tear resistance, which determines the amount of force required to tear open a film once it has been pierced and thus release the product. This property can also be influenced by the choice of the filler and its proportion in the plastic matrix, a tear strength of less than 30 N (measurement method according to DIN 53363) preferably being sought here. This numerical value applies in particular to approximately 150 μm thick films, but can essentially also be applied to much thinner or thicker films. A value for the tear propagation resistance, which is acceptable for handling, in particular also of pressure-sensitive goods, is between approx. 2 to 12 N, whereby again it should be noted that of course much lower values are possible, but with regard to the protection of the goods by the Any reduction limits are set. A preferred range for tear resistance is in the range of 3 to 4 N.

Die Folie der erfindungsgemäßen Verpackung enthält den Füllstoff als homogene Zumischung zu einem bereits fertig auspolymerisierten Kunststoffmaterial. Der Füllstoff wird also nicht - wie dies im Zusammenhang mit füllstoffverstärkten Kunststoffen bekannt ist - in der Polymerisationsreaktionsmischung aus Monomer und/oder Präpolymer dispergiert und während des Aushärtens der Reaktionsmischung in die Kunststoffmatrix eingebaut. Selbstverständlich ist es aber denkbar, solches verstärktes Kunststoffmaterial als Kunststoffmatrix in bestimmten Anwendungsfällen auch im Zusammenhang mit der vorliegenden Erfindung zu benutzen.The film of the packaging according to the invention contains the filler as a homogeneous admixture with an already fully polymerized plastic material. The filler is therefore not - as is known in connection with filler-reinforced plastics - dispersed in the polymerization reaction mixture of monomer and / or prepolymer and incorporated into the plastic matrix during the curing of the reaction mixture. Of course, it is also conceivable to use such reinforced plastic material as a plastic matrix in certain applications also in connection with the present invention.

Für die Füllstoffe der Folie steht eine breite Palette an Füllstoffen zur Verfügung. Diese können aus anorganischen und/oder organischen Substanzen ausgewählt sein.A wide range of fillers is available for the film fillers. These can be selected from inorganic and / or organic substances.

Bevorzugte Beispiele für die organischen Substanzen sind z.B. halogenierte Kohlenwasserstoffpolymere, insbesondere PTFE, Polyethersulfone, die wie das PTFE einen Fixpunkt von > 300° C aufweisen, sowie duroplastische Kunststoffe. Bei den organischen Substanzen, die als Füllstoffe dienen sollen, ist wichtig, daß sich diese bei der Verarbeitung des Kunststoffmatrixmaterials, bei der Temperaturen von 220° C und mehr auftreten können, nicht verflüssigen und dann eine homogene Lösung mit dem Kunststoffmatrixmaterial bilden, sondern daß diese im wesentlichen in Partikelform in der Kunststoffmatrix während der Verarbeitung erhalten bleiben und so einer Schwächung der durchgehenden Kunststoffmatrixschicht und damit der entsprechenden Herabsetzung der Durchstoßfestigkeit und gegebenenfalls der Weiterreißfestigkeit dienen.Preferred examples of the organic substances are e.g. halogenated hydrocarbon polymers, especially PTFE, polyether sulfones, which like the PTFE have a fixed point of> 300 ° C, as well as thermosetting plastics. With the organic substances that are to serve as fillers, it is important that they do not liquefy when processing the plastic matrix material, at temperatures of 220 ° C. and more, and then form a homogeneous solution with the plastic matrix material, but that they do remain essentially in particle form in the plastic matrix during processing and thus serve to weaken the continuous plastic matrix layer and thus the corresponding reduction in puncture resistance and possibly tear resistance.

Für die anorganische Komponente des Füllstoffs kann die Substanz ausgewählt werden aus der Reihe der Siliciumdioxide, insbesondere in Form von Glas oder Quarz, Silikate, insbesondere in Form von Talkum, Titanate, TiO2, Aluminiumoxid, Kaolin, Calciumkarbonate, insbesondere in Form von Kreide, Magnesite, MgO, Eisenoxide, Siliciumcarbide, Siliciumnitride, Bariumsulfat oder dergleichen.For the inorganic component of the filler, the substance can be selected from the range of silicon dioxide, in particular in the form of glass or quartz, silicates, in particular in the form of talc, titanates, TiO 2 , aluminum oxide, kaolin, calcium carbonates, in particular in the form of chalk, Magnesite, MgO, iron oxides, silicon carbides, silicon nitrides, barium sulfate or the like.

Bei der Auswahl der anorganischen oder organischen Substanzen als Komponenten des Füllstoffs wird stets auch das zu verpakkende Gut zu berücksichtigen sein und dessen Empfindlichkeit auf den einen oder anderen Zusatzstoff zu der Polymermatrix.When selecting the inorganic or organic substances as components of the filler, the goods to be packaged and their sensitivity to one or the other additive to the polymer matrix will always have to be taken into account.

Die Form der Füllstoffpartikel wird wohl am häufigsten granular sein, aber auch plättchenförmige, faserförmige oder stabförmige Füllstoffpartikel sind sowohl als im wesentlichen einheitliche Form oder auch in Mischung mit anderen Formen als Füllstoffpartikel möglich.The shape of the filler particles will most likely be granular, but platelet-like, fibrous or rod-shaped filler particles are both essentially uniform Form or in a mixture with other forms possible as filler particles.

Die Wahl der Partikelgröße ist selbstverständlich nicht unwesentlich mitbestimmt von der herzustellenden Folienschichtdicke. So wird darauf zu achten sein, daß die mittlere Ausdehnung der Partikel einen deutlichen Abstand zu der herzustellenden Foliendicke hält. Bevorzugt werden mittlere Partikelgrößen zwischen 20 µm und 60 µm, insbesondere bei Foliendicken von 80 µm bis 100 µm.The choice of particle size is of course not insignificantly determined by the film layer thickness to be produced. It will therefore be important to ensure that the average expansion of the particles is at a clear distance from the film thickness to be produced. Average particle sizes between 20 μm and 60 μm are preferred, in particular with film thicknesses from 80 μm to 100 μm.

Um sicherzustellen, daß der Füllstoff nicht zu einer Verstärkung der Polymermatrix führt, sollte darauf geachtet werden, daß die Füllstoffpartikel eine möglichst geringe Haftung an der Polymermatrix aufweisen. Mindestens jedoch sollten die Haftkräfte zwischen den Partikeln und der Füllstoffmatrix deutlich geringer sein als die Zugfestigkeit der Matrix selbst. So wird insbesondere bei den anorganischen Füllstoffpartikeln darauf zu achten sein, daß diese im wesentlichen frei von sogenannten Haftvermittlern sind. Solche Haftvermittler werden üblicherweise bei der Herstellung von gefüllten Kunststoffen verwendet, bei denen aber auf die besondere Festigkeit des Materials abgestellt wird.To ensure that the filler does not lead to a reinforcement of the polymer matrix, care should be taken to ensure that the filler particles have as little adhesion to the polymer matrix as possible. At least, however, the adhesive forces between the particles and the filler matrix should be significantly lower than the tensile strength of the matrix itself. In particular, care should be taken with the inorganic filler particles that they are essentially free of so-called adhesion promoters. Adhesion promoters of this type are usually used in the production of filled plastics, but in which the particular strength of the material is used.

Andererseits soll natürlich erreicht werden, daß die Füllstoffpartikel eine möglichst gleichmäßige Verteilung in der Kunststoffmatrix erhalten und auch beim Produktionsprozeß beibehalten, so daß man bevorzugt Hilfsmittel zugibt, welche die Dispergierbarkeit der Füllstoffpartikel in der Matrix verbessern.On the other hand, of course, the aim is to ensure that the filler particles are distributed as evenly as possible in the plastic matrix and also maintained during the production process, so that auxiliary agents are preferably added which improve the dispersibility of the filler particles in the matrix.

Als Dispergierhilfsmittel eignen sich insbesondere niedrigschmelzende organische Substanzen, welche eine große Be netzungsfähigkeit für den Füllstoff aufweisen. Konkrete Beispiele sind niedermolekulare Polyolefinwachse. Die Dispergierhilfsmittel werden bevorzugt auf die Füllstoffpartikel aufgebracht, bevor diese mit dem Granulat des Matrixkunststoffs vermischt, insbesondere geknetet werden.Low-melting organic substances which have great wetting capacity for the filler are particularly suitable as dispersants. Specific examples are low molecular weight polyolefin waxes. The dispersing agents are preferably applied to the filler particles, before they are mixed, in particular kneaded, with the granules of the matrix plastic.

Die Dicke der Folie wird bevorzugt von 20 µm bis ca. 600 µm gewählt, was zum einen eine ausreichende Stabilität der Folie zum Schutz der verpackten Waren sicherstellt und zum anderen die für das Öffnen der Verpackung notwendigen Kräfte innerhalb des vorgegebenen Limits hält, innerhalb dessen zumindest druckinsensitive Waren noch vom Durchschnittskäufer problemlos aus der Verpackung durch Durchdrücken der Abdeckfolie entnommen werden können.The thickness of the film is preferably selected from 20 μm to approximately 600 μm, which on the one hand ensures sufficient stability of the film to protect the packaged goods and on the other hand keeps the forces necessary for opening the packaging within the predetermined limit, at least within it Pressure-sensitive goods can still be easily removed from the packaging by pushing through the cover film by the average buyer.

Insbesondere bei der Verpackung von Pharmazeutika ist es häufig erwünscht, daß die Folie im wesentlichen wasserdampfundurchlässig ausgebildet ist.In particular in the packaging of pharmaceuticals, it is often desirable for the film to be essentially impermeable to water vapor.

Bevorzugte Polyolefine werden in Polypropylenen gesehen. Der Grund hierfür liegt in den besonders guten physikalischen Eigenschaften des Polypropylens, wie zum Beispiel Sperrwirkung für Wasserdampf, Transparenz etc.Preferred polyolefins are seen in polypropylenes. The reason for this is the particularly good physical properties of polypropylene, such as a barrier effect for water vapor, transparency, etc.

Das mittlere Molekulargewicht der Polymeren in der Kunststoffmatrix wird vorzugsweise im Bereich von ca. 10 000 bis ca. 300 000 gewählt.The average molecular weight of the polymers in the plastic matrix is preferably selected in the range from approximately 10,000 to approximately 300,000.

Bei den bislang beschriebenen Folien wurde allein durch die Zugabe der Füllstoffe zu der Kunststoffmatrix für eine verringerte Durchstoßfestigkeit bzw. Weiterreißfestigkeit derselben gesorgt.In the case of the films described hitherto, the addition of the fillers to the plastic matrix ensured reduced puncture resistance or tear propagation resistance.

Bei größeren Verpackungseinheiten, bei der eine Vielzahl von Produkten separat voneinander auf einem Warenträger gelagert und durch die Abdeckfolie abgedeckt ist, ist es häufig wünschenswert, daß die einzelnen Waren getrennt voneinander aus dem Warenträger entnommen werden können, ohne daß die Verpackung der daneben liegenden Einzelwaren beschädigt wird.In the case of larger packaging units, in which a large number of products are stored separately from one another on a goods carrier and covered by the cover film, it is often desirable for the individual goods to be separated from one another can be removed from the product carrier without the packaging of the individual goods lying next to it being damaged.

Je nach Beschaffenheit des Unterteils der Verpackung kann bereits die normale Siegelfestigkeit ausreichen, um das oben genannte Problem zu lösen. Sollte jedoch in einem direkten Kontakt der Folie mit dem Unterteil eine zu geringe Siegelfestigkeit erhalten werden, kann sich die Notwendigkeit einer zusätzlichen Siegelschicht auf der Folienoberfläche ergeben.Depending on the nature of the lower part of the packaging, the normal seal strength may be sufficient to solve the above problem. However, if the sealing strength is too low in direct contact of the film with the lower part, the need for an additional sealing layer on the film surface may arise.

Bei der besonders bevorzugten Ausführungsform der Erfindung ist die Folie zwei- oder mehrlagig aufgebaut, wobei die zwei oder mehreren Lagen der Folie vorzugsweise koextrudiert hergestellt sind.In the particularly preferred embodiment of the invention, the film is constructed in two or more layers, the two or more layers of the film preferably being produced in a coextruded manner.

Für besondere Einsatzzwecke kann vorgesehen sein, daß eine ausenliegende Folienlage als Siegelschicht ausgebildet ist. Diese kann zum einen zu einer Verbesserung der Verhaftung der Abdeckfolie mit dem Warenträger dienen und kann zum weiteren für bestimmte Anwendungszwecke mit einer speziellen Eigenschaft, wie z.B. einer besonderen Wasserdampfundurchlässigkeit, etc., ausgebildet sein.For special purposes, it can be provided that an outer film layer is designed as a sealing layer. This can, on the one hand, serve to improve the adhesion of the cover film to the goods carrier and, on the other hand, can have a special property for certain applications, such as e.g. a special water vapor impermeability, etc.

Bevorzugt wird bei der erfindungsgemäßen Verpackung das Unterteil und das Oberteil unter Verwendung derselben Kunststoffart hergestellt, so daß man ein sortenreines Produkt erhält. Solche sortenreinen Produkte sind insbesondere leicht recyclebar und für denselben Verwendungszweck wiederverwendbar, was ein Optimum im Verpackungskreislauf darstellt.In the case of the packaging according to the invention, the lower part and the upper part are preferably produced using the same type of plastic, so that a pure product is obtained. Such sorted products are particularly easy to recycle and reusable for the same purpose, which is an optimum in the packaging cycle.

Eine besonders bevorzugte Verwendung der erfindungsgemäßen Verpackung besteht in der Verpackung von Pharmazeutika, die insbesondere in Ampullen-, Kapsel- oder Tablettenform vorliegen.A particularly preferred use of the packaging according to the invention is the packaging of pharmaceuticals, which are in particular in ampoule, capsule or tablet form.

Die Erfindung sei im folgenden anhand eines Beispiels noch näher erläutert:The invention is explained in more detail below using an example:

Beim ersten Schritt wird ein Polymergranulat mit den Füllstoffanteilen vermischt und nachfolgend extrudiert oder kalandriert. Die Vermischung, insbesondere die Homogenisierung, kann durch Kneten nach bekannten Verfahren, insbesondere der Doppelschneckencompoundierung, erfolgen. Die Einzelkomponenten können aber auch in einem Trockenmischverfahren miteinander vermischt werden. Eine bessere Homogenität, d.h. eine gleichmäßigere Verteilung der Füllstoffe in der Polymermatrix, wird durch die vorgeschaltete Herstellung eines sogenannten Compounds erreicht.In the first step, a polymer granulate is mixed with the filler components and then extruded or calendered. The mixing, in particular the homogenization, can be carried out by kneading using known processes, in particular twin-screw compounding. However, the individual components can also be mixed with one another in a dry mixing process. Better homogeneity, i.e. A more even distribution of the fillers in the polymer matrix is achieved by the upstream production of a so-called compound.

Eine Behandlung der Füllstoffpartikel mit Dispergierhilfsmitteln sollte in jedem Fall vor der Vermengung mit dem Matrix-Kunststoff erfolgen.The filler particles should always be treated with dispersing aids before they are mixed with the matrix plastic.

Das Compound wird im Extruder geschmolzen, und zwar bei Massetemperaturen von ca. 220° C und mehr sowie bei einem Massedruck von bis zu 250 bar. Die Abkühlung der Schmelze erfolgt vorzugsweise über eine Chill-roll bei 20° C bis ca. 40° C, aber auch andere Abkühlverfahren, gegebenenfalls mit einer Oberflächenbehandlung mit Corona-Entladung kombiniert, sind möglich.The compound is melted in the extruder, at melt temperatures of approx. 220 ° C and more and at a melt pressure of up to 250 bar. The melt is preferably cooled using a chill roll at 20 ° C. to approx. 40 ° C., but other cooling processes, optionally combined with a surface treatment with corona discharge, are also possible.

Danach werden die Folien beschnitten und gewickelt.The foils are then cut and wrapped.

Bei Verwendung von Polypropylen als Polymeren sei als Beispiel ein homopolymeres Polypropylen mit einem Schmelzindex von 2 bis 10 g/10 min nach DIN 53735 (230° C/2,16 kg) und einer Dichte (23° C) nach DIN 53479 von 0,900 bis 0,910 g/cm3 erwähnt. Selbstverständlich können auch hiervon verschiedene Polypropylen-Typen, wie z.B. Block-Copolymere oder Random-Copolymere, verwendet werden.When using polypropylene as a polymer, consider a homopolymeric polypropylene with a melt index of 2 to 10 g / 10 min according to DIN 53735 (230 ° C / 2.16 kg) and a density (23 ° C) according to DIN 53479 of 0.900 to 0.910 g / cm 3 mentioned. Of course, different types of polypropylene, such as block copolymers or random copolymers, can also be used.

Als Füllstoff sei für dieses Beispiel Kreide oder Talkum vorgeschlagen mit einer mittleren Teilchengröße von 5 bis 60 µm, besser noch mit einer mittleren Teilchengröße von 20 bis 30 µm. Der Anteil der Füllstoffe an dem Gesamtfoliengewicht beträgt bevorzugt von 25 bis 55 Gew. %. Unterhalb von einem Füllstoffanteil von 20 Gew. % erhält man regelmäßig keine ausreichende Versprödung des Kunststoffs mit der damit zusammenhängenden Absenkung der Durchstoßfestigkeit und der Weiterreißfestigkeit mehr. Bei Anteilen deutlich über 60 Gew. % gestaltet sich die Folienherstellung schwierig und die physikalischen Festigkeitswerte sind dann häufig für die typischen Verwendungszwecke nicht mehr ausreichend.Chalk or talcum with an average particle size of 5 to 60 μm, better still with an average particle size of 20 to 30 μm, is suggested as filler for this example. The proportion of the fillers in the total film weight is preferably from 25 to 55% by weight. Below a filler content of 20% by weight, there is regularly no longer sufficient embrittlement of the plastic with the associated reduction in puncture resistance and tear resistance. With proportions well over 60% by weight, film production is difficult and the physical strength values are then often no longer sufficient for the typical uses.

Wie bei der Produktion von Propylen-Folien üblich, wird auch bei der erfindungsgemäßen Folie auf Polypropylen-Basis eine Umspulung aus Gründen der Nachkristallisation vorgenommen. (Die Dauer der Nachkristallisation beträgt typischerweise 4 bis 10 Tage.)As is customary in the production of propylene foils, the polypropylene-based foil according to the invention is also rewound for reasons of recrystallization. (The duration of the post-crystallization is typically 4 to 10 days.)

Mit einer Mischung aus

  • 50 Gew. % Polypropylen, Homopolymer und
  • 50 Gew. % Talkum als Füllstoff, mittlere Teilchengröße
  • 20 µm wurde eine 150 µm dicke Folie hergestellt.
With a mix of
  • 50% by weight of polypropylene, homopolymer and
  • 50% by weight talc as filler, average particle size
  • A 20 µm thick film was produced at 20 µm.

An dieser Folie konnte eine Durchstoßfestigkeit von 162 N/mm und eine Weiterreißfestigkeit von 3,2 N gemessen werden.A puncture resistance of 162 N / mm and a tear strength of 3.2 N were measured on this film.

Claims (20)

  1. Packaging having, as products carrier, a lower part optionally matched in shape to the products to be packaged and an upper part composed of a film for the tamper-proof covering of the products carrier, characterized in that the film is an undrawn film with a plastic matrix, which latter comprises polyolefins, polyesters, polystyrenes or styrene copolymers and contains a particulate filler in an amount of 20 to 60% by weight, wherein the filler has an average particle size (measured over the greatest extension of the particle) of approximately 5 µm to approximately 100 µm and is selected with regard to its property of weakening the continuous plastic matrix layer so that the penetration resistance of the film is reduced to a limit value of not more than approximately 200 N/mm (measured on a 150 µm thick film, measuring method according to DIN 53 373).
  2. Packaging according to Claim 1, characterized in that the filler is selected and the proportion of filler is chosen so that the tear propagation resistance of the film is reduced to below a limit value of 30 N.
  3. Packaging according to Claim 1 or 2, characterized in that the value of the penetration resistance is approximately 100 to approximately 200 N/mm.
  4. Packaging according to Claim 2 or 3, characterized in that the value of the tear propagation resistance is approximately 3 to approximately 4 N.
  5. Packaging according to one of Claims 1 to 4, characterized in that the filler comprises a component in the form of an inorganic and/or organic substance.
  6. Packaging according to Claim 5, characterized in that the filler comprises as organic substance halogenated hydrocarbon polymers, in particular PTFE, polyether sulphones and/or thermoset plastics.
  7. Packaging according to Claim 5 or 6, characterized in that the inorganic component contains a substance selected from the family of SiO2, in particular in the form of glass or quartz, silicates, in particular talc, titanates, TiO2, aluminium oxide, kaolin, calcium carbonates, in particular in the form of chalk, magnesites, MgO, iron oxides, silicon carbides, silicon nitrides, or barium sulphate.
  8. Packaging according to one of the preceding claims, characterized in that the filler is granular, in the form of small plates, fibrous or rod-shaped.
  9. Packaging according to one of the preceding claims, characterized in that the filler content is approximately 25% by weight to approximately 55% by weight.
  10. Packaging according to one of the preceding claims, characterized in that the filler particles are essentially free of adhesion promoters.
  11. Packaging according to one of the preceding claims, characterized in that the filler particles are pretreated with a supplementary agent for improving the dispersibility of the filler particles in the matrix.
  12. Packaging according to one of the preceding claims, characterized in that the film thickness is approximately 20 µm to approximately 600 µm.
  13. Packaging according to one of the preceding claims, characterized in that the film is essentially impermeable to water vapour.
  14. Packaging according to Claim 13, characterized in that polypropylenes are used as polyolefins.
  15. Packaging according to one of the preceding claims, characterized in that the polymers of the plastic matrix have an average molecular weight of approximately 10,000 to approximately 300,000.
  16. Packaging according to one or more of the preceding claims, characterized in that the film is two-layered or multilayered.
  17. Packaging according to Claim 16, characterized in that the two or more layers of the film are co-extruded.
  18. Packaging according to Claim 16 or 17, characterized in that an external film layer is a sealing layer.
  19. Packaging according to one of the preceding claims, characterized in that the lower part and the upper part are produced using the same plastic material.
  20. Use of the packaging according to one of the preceding claims for packing pharmaceuticals, in particular in ampoule, capsule or tablet form.
EP19930919084 1992-10-28 1993-08-18 Packaging with cover sheeting for securing products on support trays Expired - Lifetime EP0662098B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19950107067 EP0671432A1 (en) 1992-10-28 1993-08-18 Press-through film for goods support coverings enabling handling security

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4236450A DE4236450A1 (en) 1992-10-28 1992-10-28 Foil for tamper-proof covers of goods carriers
DE4236450 1992-10-28
PCT/EP1993/002200 WO1994010229A1 (en) 1992-10-28 1993-08-18 Cover sheeting for securing products on support trays

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP95107067.1 Division-Into 1993-08-18

Publications (2)

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EP0662098A1 EP0662098A1 (en) 1995-07-12
EP0662098B1 true EP0662098B1 (en) 1997-01-29

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EP19990114241 Withdrawn EP0962485A1 (en) 1992-10-28 1993-08-18 Press-through film for goods support coverings enabling handling security
EP19950107067 Withdrawn EP0671432A1 (en) 1992-10-28 1993-08-18 Press-through film for goods support coverings enabling handling security

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EP19950107067 Withdrawn EP0671432A1 (en) 1992-10-28 1993-08-18 Press-through film for goods support coverings enabling handling security

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US (1) US5932338A (en)
EP (3) EP0662098B1 (en)
JP (1) JP2815704B2 (en)
AT (1) ATE148483T1 (en)
CA (1) CA2146649C (en)
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DE (3) DE4236450A1 (en)
DK (1) DK0662098T3 (en)
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NO (1) NO311433B1 (en)
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GR3022432T3 (en) 1997-04-30
SK52795A3 (en) 1995-08-09
CZ100795A3 (en) 1995-12-13
CA2146649C (en) 2000-08-01
HU214848B (en) 1998-06-29
SI9300557A (en) 1994-06-30
DE9320940U1 (en) 1995-06-14
ES2098771T3 (en) 1997-05-01
ATE148483T1 (en) 1997-02-15
CA2146649A1 (en) 1994-05-11
EP0962485A1 (en) 1999-12-08
DK0662098T3 (en) 1997-08-25
HUT70711A (en) 1995-10-30
NO311433B1 (en) 2001-11-26
JPH08502536A (en) 1996-03-19
NO951530L (en) 1995-04-21
SK282070B6 (en) 2001-10-08
NO951530D0 (en) 1995-04-21
WO1994010229A1 (en) 1994-05-11
DE59305356D1 (en) 1997-03-13
EP0662098A1 (en) 1995-07-12
EP0671432A1 (en) 1995-09-13
US5932338A (en) 1999-08-03
PL308548A1 (en) 1995-08-21
JP2815704B2 (en) 1998-10-27
DE4236450A1 (en) 1994-05-05

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