EP1646499A1 - Cold-workable laminate - Google Patents

Cold-workable laminate

Info

Publication number
EP1646499A1
EP1646499A1 EP04735877A EP04735877A EP1646499A1 EP 1646499 A1 EP1646499 A1 EP 1646499A1 EP 04735877 A EP04735877 A EP 04735877A EP 04735877 A EP04735877 A EP 04735877A EP 1646499 A1 EP1646499 A1 EP 1646499A1
Authority
EP
European Patent Office
Prior art keywords
cold
laminate according
formable laminate
sealing layer
aluminum foil
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.)
Withdrawn
Application number
EP04735877A
Other languages
German (de)
French (fr)
Inventor
Hans-Rudolf Nägeli
Erwin Pasbrig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP04735877A priority Critical patent/EP1646499A1/en
Publication of EP1646499A1 publication Critical patent/EP1646499A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/80—Medical packaging
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/269—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension including synthetic resin or polymer layer or component
    • 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
    • Y10T428/27—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
    • Y10T428/273—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.] of coating
    • 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]
    • Y10T428/31678—Of metal
    • 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]
    • Y10T428/31678—Of metal
    • Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, 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]
    • Y10T428/31678—Of metal
    • Y10T428/31692—Next to addition polymer from unsaturated monomers
    • 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]
    • Y10T428/31678—Of metal
    • Y10T428/31692—Next to addition polymer from unsaturated monomers
    • Y10T428/31699—Ester, halide or nitrile of addition polymer

Definitions

  • the invention relates to a cold-formable laminate for the production of containers for packaging pharmaceutical and medical technology products and diagnostics, with an aluminum foil, a biaxially stretched plastic foil arranged on a first side of the aluminum foil as the outer layer and one arranged on the second side of the aluminum foil - gel layer.
  • the invention has for its object to provide a cold-formable laminate of the type mentioned, which allows compared to the laminates according to the prior art by at least 15% more cold deformation and has a resistance to delamination under ICH conditions of at least 52 weeks.
  • the aluminum foil is connected to the biaxially stretched plastic film of the outer layer by extrusion lamination.
  • the biaxially stretched plastic film of the outer layer is preferably of the type
  • PE polyethylene
  • PP polypropylene
  • PA polyamide
  • COC cycloolefin-ethylene copolymer
  • PS polystyrene
  • Suitable laminating agents are adhesion-modified polyolefins, in particular PE-MAH (polyethylene-maleic anhydride graft polymer), PP-MAH (polypropylene-maleic anhydride graft polymer), EVA (ethylene-vinyl acetate copolymer) -MAH or PE copolymers, in particular EAA (ethylene - acrylic acid), EBA (ethylene-butyl acrylate), EMA (ethylene-methacrylic acid),
  • PE-MAH polyethylene-maleic anhydride graft polymer
  • PP-MAH polypropylene-maleic anhydride graft polymer
  • EVA ethylene-vinyl acetate copolymer
  • EAA ethylene - acrylic acid
  • EBA ethylene-butyl acrylate
  • EMA ethylene-methacrylic acid
  • the thickness of the extrusion lamination is in the range from 2 to 30 ⁇ m, preferably 3 to 12 ⁇ m, as a monolayer or coextruded, e.g. PP-MAH / PP / PP-MAH.
  • the outer layer consists of a biaxially stretched (oriented) polyamide film (oPA film) which is extrusion-laminated against the aluminum film with PE-LLD (linear, low density) -MAH.
  • oPA film biaxially stretched (oriented) polyamide film
  • the biaxially oriented plastic film and / or the aluminum film can be coated with a primer.
  • Suitable primers are water- or solvent-based polyimide, PP-MAH, EAA or acrylate or the like. mer.
  • the biaxially stretched plastic film of the outer layer is extrusion coated with a polyolefin and lacquered against the aluminum film.
  • the side of the biaxially stretched plastic film coated with the polyolefin can be directed against the aluminum film or against the outside.
  • the biaxially stretched plastic film of the outer layer is preferably of the PE, PP, polyamide, polyester, PEN, COC or polystyrene type and is extrusion-coated with PE or PP.
  • the extrusion coating has an application weight in the range from 5 to 40 g / m 2 , preferably 10 to 30 g / m 2 .
  • the thickness of the aluminum foils used for the laminates according to the invention is in the range from 20 to 100 ⁇ m, preferably 30 to 70 ⁇ m.
  • the aluminum foil can be soft or have a defined hardness.
  • the laminates according to the invention can be processed into packaging containers on existing packaging systems.
  • the inner or sealing layer can be an unstretched plastic film which is lacquered or extrusion-laminated with the aluminum film.
  • plastic films based on PVC (polyvinyl chloride), PVDC (polyvinylidene chloride), PE, PP, polyolefin copolymers, in particular EAA, EEA and ionomers, polyamide, polystyrene, COC, PET, PEN or PCTFE (Polychlortetrafluorethylen, ACLAR ®).
  • the thickness of the plastic film or a combination of two or more films is in the range from 10 to 120 ⁇ m, preferably 19 to 100 ⁇ m.
  • the extrusion lamination can be carried out, for example, with a PE terpolymer. Lacquer lamination can be carried out with aqueous, solvent-based or solvent-free lamination agents.
  • the sealing layer can also be a polyolefin and the aluminum foil can be extrusion-coated with the sealing layer.
  • extrusion coating sealing layers produced consist of polyolefinic plastics, in particular of PE, PP, EAA, EAA-PE-LD, or an ionomer, for example a sodium or zinc acrylate co- or terionomer as SURLYN ®, with a coating weight in the range from 5 to 80 g / m 2 , preferably 15 to 40 g / m 2 , or coated with PVDC with an application weight in the range from 5 to 120 g / m 2 , preferably 20 to 60 g / m 2 .
  • polyolefinic plastics in particular of PE, PP, EAA, EAA-PE-LD, or an ionomer, for example a sodium or zinc acrylate co- or terionomer as SURLYN ®, with a coating weight in the range from 5 to 80 g / m 2 , preferably 15 to 40 g / m 2 , or coated with PVDC with an application weight in the range from 5 to 120
  • Extrusion-coated sealing layers or sealing layers produced by extrusion coating are environmentally friendly since they do not require any solvent and consequently the atmosphere is not polluted with VOCs.
  • sealing layers are heat seal lacquers based on acrylates, polybutylates, Morprime, styrene acrylate with polyolefin groups, PVC / AC plus acrylate, PP / butadiene or polyester / butadiene / styrene, with an application weight in the range from 2 to 20 g / m 2 , preferably 5 to 15 g / m 2 .
  • the aluminum foil can also be coated with a primer and the sealing layer applied to the primer.
  • Suitable primers are e.g. EAA or polyimide primer.
  • the plastic used for the sealing layer depends on the structure of the cover films provided for sealing the packaging containers made from the laminates.
  • the table below shows a selection of cold-formable laminates constructed in accordance with the invention with biaxially oriented oriented poly amide (oPA) put together as an outer layer.
  • the “outside” is the side of the laminate that forms the outside of the packaging container, and the “inside” is the side of the laminate which is directed towards sealing against the plastic of a cover film, in each case by specifying the application weight for the lacquer coating or the film thickness for the film coating.

Abstract

The invention relates to a cold-workable laminate for producing containers for packing pharmaceutical and medical products and diagnostic agents. Said laminate comprises an aluminium film which is provided with a biaxially stretched plastic film arranged on a first side, as an outer layer, and a sealing layer arranged on the second side. Said aluminium film is connected to the biaxially stretched plastic film by means of extrusion lamination, or the biaxially stretched plastic film is extrusion-coated by a polyolefin and lacquer-laminated against the aluminium film. The inventive laminate can be cold-worked at least 15 % more than laminates according to prior art and has an increased resistance to delamination.

Description

Kaltverformbares LaminatCold formable laminate
Die Erfindung betrifft ein kaltverformbares Laminat für die Herstellung von Behältern zur Verpackung von pharmazeutischen und medizintechnischen Produkten und Diagnostika, mit einer Aluminiumfolie, einer auf einer ersten Seite der Aluminiumfolie angeordneten biaxial gereckten Kunststofffolie als Aussen- schicht und einer auf der zweiten Seite der Aluminiumfolie angeordneten Sie- gelschicht.The invention relates to a cold-formable laminate for the production of containers for packaging pharmaceutical and medical technology products and diagnostics, with an aluminum foil, a biaxially stretched plastic foil arranged on a first side of the aluminum foil as the outer layer and one arranged on the second side of the aluminum foil - gel layer.
Für die Herstellung von Behältern zur Verpackung von pharmazeutischen und medizintechnischen Produkten und Diagnostika, wie z.B. Bodenteile von Blister- oder Durchdrückpackungen, sind kaltverformbare Laminate mit dem Aufbau biaxial gereckte Kunststofffolie / Aluminiumfolie / Siegelschicht (Lack, Kunststofffolie oder Kunststoffbeschichtung) bekannt. Die Verbindung der aussen- seitigen Kunststofffolie mit der Aluminiumfolie erfolgt über einen Klebstoff, wobei die Aluminiumfolie überwiegend lackiert ist, um den Einfluss von Belegungen auf der Aluminiumfolie zu kompensieren. Es ist auch schon vorgeschlagen worden, die Verbindung zwischen einer aussenseitigen Folie aus biaxial gerecktem Polyamid und der Aluminiumfolie durch Heisskalandrierung herzustellen, wobei der Klebstoff bzw. das Kaschiermittel vorgängig aufgetragen und getrocknet wurde.For the production of containers for the packaging of pharmaceutical and medical technology products and diagnostics, e.g. Bottom parts of blister or blister packs, cold-formable laminates with the structure of biaxially stretched plastic film / aluminum film / sealing layer (lacquer, plastic film or plastic coating) are known. The plastic film on the outside is connected to the aluminum film by means of an adhesive, the aluminum film being predominantly painted in order to compensate for the influence of coatings on the aluminum film. It has also already been proposed to produce the connection between an outside film made of biaxially stretched polyamide and the aluminum film by hot calendering, the adhesive or the laminating agent having been applied beforehand and dried.
Mit den vorstehend erwähnten Laminaten kann eine maximale Verformbarkeit durch Kaltumformung von etwa 30% erzielt werden. Die Beständigkeit gegen Feuchte und Wärme, d.h. die Beständigkeit der aussenseitigen Kunststofffolie gegen Delamination, liegt unter ICH-Bedingungen bei maximal 26 Wochen.With the above-mentioned laminates, maximum deformability by cold working of about 30% can be achieved. Resistance to moisture and heat, i.e. The resistance of the outside plastic film against delamination is maximum 26 weeks under ICH conditions.
Der Erfindung liegt die Aufgabe zugrunde, ein kaltverformbares Laminat der eingangs genannten Art zu schaffen, das im Vergleich zu den Laminaten nach dem Stand der Technik um mindestens 15% mehr Kaltverformung zulässt und eine Delaminationsbeständigkeit unter ICH-Bedingungen von mindestens 52 Wochen aufweist.The invention has for its object to provide a cold-formable laminate of the type mentioned, which allows compared to the laminates according to the prior art by at least 15% more cold deformation and has a resistance to delamination under ICH conditions of at least 52 weeks.
Zur erfindungsgemässen Lösung der Aufgabe führen grundsätzlich die folgen- den zwei Wege:The following two ways lead to the achievement of the object according to the invention:
1. Die Aluminiumfolie ist mit der biaxial gereckten Kunststofffolie der Aussen- schicht durch Extrusionskaschierung verbunden.1. The aluminum foil is connected to the biaxially stretched plastic film of the outer layer by extrusion lamination.
Die biaxial gereckte Kunststofffolie der Aussenschicht ist bevorzugt vom TypThe biaxially stretched plastic film of the outer layer is preferably of the type
PE (Polyethylen), PP (Polypropylen), PA (Polyamid), Polyester, PEN (PoIy- ethylennaphthalat), COC (Cycloolefin-Ethylen-Copolymer) oder PS (Polystyrol). Die Foliendicke liegt im Bereich von 10 bis 50 μm, vorzugsweise 15 bis 30 μm.PE (polyethylene), PP (polypropylene), PA (polyamide), polyester, PEN (polyethylene naphthalate), COC (cycloolefin-ethylene copolymer) or PS (polystyrene). The film thickness is in the range from 10 to 50 μm, preferably 15 to 30 μm.
Geeignete Kaschiermittel sind haftungsmodifizierte Polyolefine, insbesondere PE-MAH (Polyethylen-Maleinsäureanhydrid-Pfropfpolymer), PP-MAH (Polypropylen-Maleinsäureanhydrid-Pfropfpolymer), EVA (Ethylen-Vinyl- acetat-Copolymer)-MAH oder PE-Copolymere, insbesondere EAA (Ethylen- Acrylsäure), EBA (Ethylen-Butylacrylat), EMA (Ethylen-Methacrylsäure),Suitable laminating agents are adhesion-modified polyolefins, in particular PE-MAH (polyethylene-maleic anhydride graft polymer), PP-MAH (polypropylene-maleic anhydride graft polymer), EVA (ethylene-vinyl acetate copolymer) -MAH or PE copolymers, in particular EAA (ethylene - acrylic acid), EBA (ethylene-butyl acrylate), EMA (ethylene-methacrylic acid),
EEA (Ethylen-Ethylacrylat) oder lonomere. Die Dicke der Extrusionskaschierung liegt im Bereich von 2 bis 30 μm, vorzugsweise 3 bis 12 μm, als Mo- noschicht oder coextrudiert, z.B. PP-MAH/PP/PP-MAH.EEA (ethylene ethyl acrylate) or ionomer. The thickness of the extrusion lamination is in the range from 2 to 30 µm, preferably 3 to 12 µm, as a monolayer or coextruded, e.g. PP-MAH / PP / PP-MAH.
Bei einem besonders bevorzugten Laminataufbau besteht die Aussenschicht aus einer biaxial gereckten (orientierten) Polyamid-Folie (oPA-Folie), die mit PE-LLD (linear, niedrige Dichte)-MAH gegen die Aluminiumfolie extrusionskaschiert ist.In a particularly preferred laminate structure, the outer layer consists of a biaxially stretched (oriented) polyamide film (oPA film) which is extrusion-laminated against the aluminum film with PE-LLD (linear, low density) -MAH.
Die biaxial orientierte Kunststofffolie und/oder die Aluminiumfolie können mit einem Primer beschichtet sein. Geeignete Primer sind wasser- oder lösungsmittelbasierende Polyimid, PP-MAH, EAA oder Acrylat oder dgl. Pri- mer.The biaxially oriented plastic film and / or the aluminum film can be coated with a primer. Suitable primers are water- or solvent-based polyimide, PP-MAH, EAA or acrylate or the like. mer.
2. Die biaxial gereckte Kunststofffolie der Aussenschicht ist mit einem Polyole- fin extrusionsbeschichtet und gegen die Aluminiumfolie lackkaschiert. Die mit dem Polyolefin beschichtete Seite der biaxial gereckten Kunststofffolie kann gegen die Aluminiumfolie oder gegen die Aussenseite gerichtet sein.2. The biaxially stretched plastic film of the outer layer is extrusion coated with a polyolefin and lacquered against the aluminum film. The side of the biaxially stretched plastic film coated with the polyolefin can be directed against the aluminum film or against the outside.
Die biaxial gereckte Kunststofffolie der Aussenschicht ist bevorzugt vom Typ PE, PP, Polyamid, Polyester, PEN, COC oder Polystyrol und ist mit PE oder PP extrusionsbeschichtet. Die Extrusionsbeschichtung weist ein Auftragsgewicht im Bereich von 5 bis 40 g/m2, vorzugsweise 10 bis 30 g/m2, auf.The biaxially stretched plastic film of the outer layer is preferably of the PE, PP, polyamide, polyester, PEN, COC or polystyrene type and is extrusion-coated with PE or PP. The extrusion coating has an application weight in the range from 5 to 40 g / m 2 , preferably 10 to 30 g / m 2 .
Beide Lösungswege führen zu Laminaten die den Anforderungen hinsichtlich Kaltverformungsgrad und Delaminationsbeständigkeit genügen.Both solutions lead to laminates that meet the requirements with regard to the degree of cold deformation and resistance to delamination.
Die Dicke der für die erfindungsgemässen Laminate verwendeten Aluminiumfolien liegt im Bereich von 20 bis 100 μm, vorzugsweise 30 bis 70 μm. Die Aluminiumfolie kann weich sein oder eine definierte Härte aufweisen.The thickness of the aluminum foils used for the laminates according to the invention is in the range from 20 to 100 μm, preferably 30 to 70 μm. The aluminum foil can be soft or have a defined hardness.
Die erfindungsgemässen Laminate können auf bestehenden Abpackanlagen zu Verpackungsbehältern verarbeitet werden.The laminates according to the invention can be processed into packaging containers on existing packaging systems.
Die Innen- oder Siegelschicht kann eine ungereckte, mit der Aluminiumfolie lack- oder extrusionskaschierte Kunststofffolie sein. Bevorzugt sind Kunststoff- folien auf Basis PVC (Polyvinylchlorid), PVDC (Polyvinylidenchlorid), PE, PP, Polyolefin-Copolymere, insbesondere EAA, EEA und lonomere, Polyamid, Polystyrol, COC, PET, PEN oder PCTFE (Polychlortetrafluorethylen, ACLAR®). Die Dicke der Kunststofffolie oder einer Kombination von zwei oder mehr Folien liegt im Bereich von 10 bis 120 μm, vorzugsweise 19 bis 100 μm. Die Extrusi- onskaschierung kann z.B. mit einem PE-Terpolymer durchgeführt werden. Eine Lackkaschierung kann mit wässrigen, lösungsmittelbasierenden oder lösungsmittelfreien Kaschiermitteln durchgeführt werden. Die Siegelschicht kann auch ein Polyolefin und die Aluminiumfolie mit der Siegelschicht extrusionsbeschichtet sein. Bevorzugte, durch Extrusionsbeschich- tung hergestellte Siegelschichten bestehen aus polyolefinischen Kunststoffen, insbesondere aus PE, PP, EAA, EAA-PE-LD, oder einem lonomer, z.B. einem Natrium- oder Zinkacrylat Co- oder Terionomer wie SURLYN®, mit einem Auftragsgewicht im Bereich von 5 bis 80 g/m2, vorzugsweise 15 bis 40 g/m2, oder beschichtet mit PVDC mit einem Auftragsgewicht im Bereich von 5 bis 120 g/m2, vorzugsweise 20 bis 60 g/m2.The inner or sealing layer can be an unstretched plastic film which is lacquered or extrusion-laminated with the aluminum film. Preference is given to plastic films based on PVC (polyvinyl chloride), PVDC (polyvinylidene chloride), PE, PP, polyolefin copolymers, in particular EAA, EEA and ionomers, polyamide, polystyrene, COC, PET, PEN or PCTFE (Polychlortetrafluorethylen, ACLAR ®). The thickness of the plastic film or a combination of two or more films is in the range from 10 to 120 μm, preferably 19 to 100 μm. The extrusion lamination can be carried out, for example, with a PE terpolymer. Lacquer lamination can be carried out with aqueous, solvent-based or solvent-free lamination agents. The sealing layer can also be a polyolefin and the aluminum foil can be extrusion-coated with the sealing layer. Preferred, by extrusion coating sealing layers produced consist of polyolefinic plastics, in particular of PE, PP, EAA, EAA-PE-LD, or an ionomer, for example a sodium or zinc acrylate co- or terionomer as SURLYN ®, with a coating weight in the range from 5 to 80 g / m 2 , preferably 15 to 40 g / m 2 , or coated with PVDC with an application weight in the range from 5 to 120 g / m 2 , preferably 20 to 60 g / m 2 .
Extrusionskaschierte Siegelschichten oder durch Extrusionsbeschichtung hergestellte Siegelschichten sind umweltfreundlich, da sie kein Lösungsmittel benötigen und demzufolge die Atmosphäre auch nicht mit VOCs belastet wird.Extrusion-coated sealing layers or sealing layers produced by extrusion coating are environmentally friendly since they do not require any solvent and consequently the atmosphere is not polluted with VOCs.
Weitere bevorzugte Siegelschichten sind Heisssiegellacke auf Basis Acrylate, Polybutylate, Morprime, Styrolacrylat mit Polyolefingruppen, PVC/AC plus Acry- lat, PP/Butadien oder Polyester/Butadien/Styrol, mit einem Auftragsgewicht im Bereich von 2 bis 20 g/m2, vorzugsweise 5 bis 15 g/m2.Further preferred sealing layers are heat seal lacquers based on acrylates, polybutylates, Morprime, styrene acrylate with polyolefin groups, PVC / AC plus acrylate, PP / butadiene or polyester / butadiene / styrene, with an application weight in the range from 2 to 20 g / m 2 , preferably 5 to 15 g / m 2 .
Die Aluminiumfolie kann auch mit einem Primer beschichtet und die Siegelschicht auf den Primer aufgetragen sein. Geeignete Primer sind z.B. EAA oder Polyimid Primer.The aluminum foil can also be coated with a primer and the sealing layer applied to the primer. Suitable primers are e.g. EAA or polyimide primer.
Der für die Siegelschicht verwendete Kunststoff richtet sich nach dem Aufbau der zum Verschliessen der aus den Laminaten hergestellten Verpackungsbehälter vorgesehenen Deckfolien.The plastic used for the sealing layer depends on the structure of the cover films provided for sealing the packaging containers made from the laminates.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele.Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments.
In der nachstehenden Tabelle ist eine Auswahl von erfindungsgemäss aufgebauten, kaltverformbaren Laminaten mit biaxial gerecktem, orientiertem PoIy- amid (oPA) als Aussenschicht zusammengestellt. Mit „Aussenseite" ist die beim Verpackungsbehälter die Aussenseite bildende, mit „Innenseite" die zur Siege- lung gegen den Kunststoff einer Deckfolie gerichtete Seite des Laminates bezeichnet, jeweils unter Angabe des Auftragsgewichts bei Lackbeschichtung bzw. der Foliendicke bei Folienbeschichtung.The table below shows a selection of cold-formable laminates constructed in accordance with the invention with biaxially oriented oriented poly amide (oPA) put together as an outer layer. The “outside” is the side of the laminate that forms the outside of the packaging container, and the “inside” is the side of the laminate which is directed towards sealing against the plastic of a cover film, in each case by specifying the application weight for the lacquer coating or the film thickness for the film coating.
Kaltverformung zu und zeigt eine verbesserte Delaminationsbeständigkeit Die vorstehend erwähnten Beispiele stellen eine Auswahl bevorzugter Laminate dar. Die Erfindung ist nicht auf die genannten Beispiele begrenzt. Cold forming and shows an improved resistance to delamination. The examples mentioned above represent a selection of preferred laminates. The invention is not limited to the examples mentioned.

Claims

Patentansprüche claims
1. Kaltverformbares Laminat für die Herstellung von Behältern zur Verpackung von pharmazeutischen und medizintechnischen Produkten und Diagnostika, mit einer Aluminiumfolie, einer auf einer ersten Seite der Aluminiumfolie angeordneten biaxial gereckten Kunststofffolie als Aussenschicht und einer auf der zweiten Seite der Aiuminiumfolie angeordneten Siegelschicht,1. Cold-formable laminate for the production of containers for packaging pharmaceutical and medical technology products and diagnostics, with an aluminum foil, a biaxially stretched plastic foil arranged on a first side of the aluminum foil as the outer layer and a sealing layer arranged on the second side of the aluminum foil,
dadurch gekennzeichnet, dasscharacterized in that
die Aluminiumfolie mit der biaxial gereckten Kunststofffolie durch Extrusi- onskaschierung verbunden ist.the aluminum foil is connected to the biaxially stretched plastic film by extrusion lamination.
2. Kaltverformbares Laminat für die Herstellung von Behältern zur Verpackung von pharmazeutischen und medizintechnischen Produkten und Diagnostika, mit einer Aluminiumfolie, einer auf einer ersten Seite der Aluminiumfolie angeordneten biaxial gereckten Kunststofffolie als Aussenschicht und einer auf der zweiten Seite der Aluminiumfolie angeordneten Siegelschicht,2. Cold-formable laminate for the production of containers for packaging pharmaceutical and medical technology products and diagnostics, with an aluminum foil, a biaxially stretched plastic foil arranged on a first side of the aluminum foil as the outer layer and a sealing layer arranged on the second side of the aluminum foil,
dadurch gekennzeichnet, dasscharacterized in that
die biaxial gereckte Kunststofffolie mit einem Polyolefin extrusionsbe- schichtet und gegen die Aluminiumfolie lackkaschiert ist.the biaxially stretched plastic film is extrusion coated with a polyolefin and lacquer-coated against the aluminum film.
3. Kaltverformbares Laminat nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Siegelschicht eine ungereckte Kunststofffolie ist und mit der Aluminiumfolie lack- oder extrusionskaschiert ist.3. Cold-formable laminate according to claim 1 or 2, characterized in that the sealing layer is an unstretched plastic film and is lacquered or extrusion-laminated with the aluminum film.
4. Kaltverformbares Laminat nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Siegelschicht ein Polyolefin ist und die Aluminiumfolie mit der Siegelschicht extrusionsbeschichtet ist. 4. Cold-formable laminate according to claim 1 or 2, characterized in that the sealing layer is a polyolefin and the aluminum foil is extrusion-coated with the sealing layer.
5. Kaltverformbares Laminat nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Siegelschicht ein Heisssiegellack ist.5. Cold-formable laminate according to claim 1 or 2, characterized in that the sealing layer is a heat seal lacquer.
6. Kaltverformbares Laminat nach Anspruch 1 , dadurch gekennzeichnet, dass die biaxial gereckte Kunststofffolie der Aussenschicht vom Typ PE, PP, Polyamid, Polyester, PEN, COC oder Polystyrol ist und mit haftungsmodifi- zierten Polyolefinen, insbesondere PE-MAH, PP-MAH, EVA-MAH oder Polyethylen Copolymeren, insbesondere EAA, EMA, EEA oder lonomere, gegen die Aluminiumfolie extrusionskaschiert ist.6. Cold-formable laminate according to claim 1, characterized in that the biaxially stretched plastic film of the outer layer is of the type PE, PP, polyamide, polyester, PEN, COC or polystyrene and with adhesion-modified polyolefins, in particular PE-MAH, PP-MAH, EVA-MAH or polyethylene copolymers, in particular EAA, EMA, EEA or ionomers, is extrusion-laminated against the aluminum foil.
7. Kaltverformbares Laminat nach Anspruch 6, dadurch gekennzeichnet, dass die Dicke der biaxial gereckten Kunststofffolie 10 bis 50 μm, vorzugsweise 15 bis 30 μm beträgt.7. Cold-formable laminate according to claim 6, characterized in that the thickness of the biaxially stretched plastic film is 10 to 50 μm, preferably 15 to 30 μm.
8. Kaltverformbares Laminat nach Anspruch 6, dadurch gekennzeichnet, dass die Aluminiumfolie mit einem Primer beschichtet ist.8. Cold-formable laminate according to claim 6, characterized in that the aluminum foil is coated with a primer.
9. Kaltverformbares Laminat nach Anspruch 2, dadurch gekennzeichnet, dass die biaxial gereckte Kunststofffolie der Aussenschicht vom Typ PE, PP, Polyamid, Polyester, PEN, COC oder Polystyrol und mit PE oder PP extru- sionsbeschichtet ist.9. Cold-formable laminate according to claim 2, characterized in that the biaxially stretched plastic film of the outer layer is of the PE, PP, polyamide, polyester, PEN, COC or polystyrene type and is extrusion-coated with PE or PP.
10. Kaltverformbares Laminat nach Anspruch 9, dadurch gekennzeichnet, dass das Auftragsgewicht der Extrusionsbeschichtung 5 bis 40 g/m2, vorzugsweise 15 bis 30 g/m2, beträgt.10. Cold-formable laminate according to claim 9, characterized in that the application weight of the extrusion coating is 5 to 40 g / m 2 , preferably 15 to 30 g / m 2 .
11. Kaltverformbares Laminat nach Anspruch 3, dadurch gekennzeichnet, dass die Siegelschicht eine ungereckte Kunststofffolie auf Basis PVC, PVDC, PE, PP, Polyolefin-Copolymere, insbesondere EAA, EEA und lonomere, Polyamid, Polystyrol, COC, PET, PEN oder PCTFE ist.11. Cold-formable laminate according to claim 3, characterized in that the sealing layer is an unstretched plastic film based on PVC, PVDC, PE, PP, polyolefin copolymers, in particular EAA, EEA and ionomers, polyamide, polystyrene, COC, PET, PEN or PCTFE ,
12. Kaltverformbares Laminat nach Anspruch 11 , dadurch gekennzeichnet, dass die Dicke der Siegelschicht 10 bis 120 μm, vorzugsweise 19 bis 100 μm beträgt.12. Cold-formable laminate according to claim 11, characterized in that that the thickness of the sealing layer is 10 to 120 μm, preferably 19 to 100 μm.
13. Kaltverformbares Laminat nach Anspruch 4, dadurch gekennzeichnet, dass die Siegelschicht PE, PP, EAA oder ein lonomer ist.13. Cold-formable laminate according to claim 4, characterized in that the sealing layer is PE, PP, EAA or an ionomer.
14. Kaltverformbares Laminat nach Anspruch 5, dadurch gekennzeichnet, dass die Siegelschicht ein Heisssiegellack auf Basis Acrylate, Polybutylate, Morprime, Styrolacrylat mit Polyolefingruppen, PVC/AC plus Acrylat, PP/Butadien oder Polyester/Butadien/Styrol ist.14. Cold-formable laminate according to claim 5, characterized in that the sealing layer is a heat seal lacquer based on acrylates, polybutylates, Morprime, styrene acrylate with polyolefin groups, PVC / AC plus acrylate, PP / butadiene or polyester / butadiene / styrene.
15. Kaltverformbares Laminat nach Anspruch 14, dadurch gekennzeichnet, dass das Auftragsgewicht des Heisssiegellackes 2 bis 20 g/m2, vorzugsweise 5 bis 15 g/m2, beträgt.15. Cold-formable laminate according to claim 14, characterized in that the application weight of the heat seal lacquer is 2 to 20 g / m 2 , preferably 5 to 15 g / m 2 .
16. Kaltverformbares Laminat nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, dass die Aluminiumfolie mit einem Primer beschichtet und die Siegelschicht auf den Primer aufgetragen ist. 16. Cold-formable laminate according to one of claims 11 to 15, characterized in that the aluminum foil is coated with a primer and the sealing layer is applied to the primer.
EP04735877A 2003-06-17 2004-06-03 Cold-workable laminate Withdrawn EP1646499A1 (en)

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PCT/EP2004/005978 WO2004110746A1 (en) 2003-06-17 2004-06-03 Cold-workable laminate
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EP1488921A1 (en) 2004-12-22
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JP2006527667A (en) 2006-12-07
CN1809452A (en) 2006-07-26

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