EP2090510A1 - Method for sealing blister packaging - Google Patents
Method for sealing blister packaging Download PDFInfo
- Publication number
- EP2090510A1 EP2090510A1 EP08405042A EP08405042A EP2090510A1 EP 2090510 A1 EP2090510 A1 EP 2090510A1 EP 08405042 A EP08405042 A EP 08405042A EP 08405042 A EP08405042 A EP 08405042A EP 2090510 A1 EP2090510 A1 EP 2090510A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing
- sealing layer
- adhesive
- blisterbodenteil
- blister
- 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- Withdrawn
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004806 packaging method and process Methods 0.000 title description 3
- 239000010410 layer Substances 0.000 claims abstract description 46
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 239000013039 cover film Substances 0.000 claims abstract description 15
- 239000012790 adhesive layer Substances 0.000 claims abstract description 14
- 239000010408 film Substances 0.000 claims abstract description 12
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 11
- 238000007639 printing Methods 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 17
- 239000004743 Polypropylene Substances 0.000 description 16
- 239000000853 adhesive Substances 0.000 description 16
- -1 Polypropylen Polymers 0.000 description 14
- 229910052782 aluminium Inorganic materials 0.000 description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 14
- 239000011888 foil Substances 0.000 description 13
- 229920000139 polyethylene terephthalate Polymers 0.000 description 12
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 10
- 239000004698 Polyethylene Substances 0.000 description 9
- 239000002985 plastic film Substances 0.000 description 9
- 229920006255 plastic film Polymers 0.000 description 9
- 229920004439 Aclar® Polymers 0.000 description 8
- 239000004713 Cyclic olefin copolymer Substances 0.000 description 8
- 239000012876 carrier material Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920002647 polyamide Polymers 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 229920001824 Barex® Polymers 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000005035 Surlyn® Substances 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000011112 polyethylene naphthalate Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 235000015872 dietary supplement Nutrition 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002552 dosage form Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000005026 oriented polypropylene Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B7/00—Closing containers or receptacles after filling
- B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
- B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
- B65B7/164—Securing by heat-sealing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B7/00—Closing containers or receptacles after filling
- B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
- B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
- B65B7/2842—Securing closures on containers
- B65B7/2871—Securing closures on containers by gluing
Definitions
- the invention relates to a method for sealing blister packs, in which method a blister bottom part with at least one cup-shaped container shaped out of the blister bottom part is sealed via a sealing layer with a cover film.
- blister packs are used to package a large number of different products from the pharmaceutical, medical, medical technology, cosmetics, nutritional supplements, food and general technology sectors.
- solids present in solid, powdery, viscous or liquid form may be readily placed in the package or in the package, e.g. by freeze-drying, are placed in the appropriate dosage form.
- Systems known for opening blister packs for removal of contents include, but are not limited to: for example, pushing the contents, e.g. a tablet, from the cup-shaped container through the cover sheet, the opening of the cup-shaped container by peeling the cover sheet or peeling a partial layer of the cover sheet with subsequent pressing of the tablet by a peeling of the first part layer exposed second sub-layer (peel-push systems).
- the invention has for its object to achieve a seal with little or no heat, so that the filling material is not affected by the heat of sealing.
- the sealing layer is arranged and activated as a self-adhesive sealing layer, which can be activated substantially without the supply of heat, between the cover film and the blister base part.
- the self-adhesive systems used according to the invention can be applied to all conventional blister packs and can be applied before the seal as a coating on the cover sheet, on the Blisterteilteil or on both blister components.
- the self-adhesive layer can be part of the ready-made roll goods.
- the self-adhesive sealing layer is preferably applied only after the cup-shaped depressions have been formed.
- the sealing layer preferably contains a pressure-sensitive adhesive (PSA) and is activated by pressure.
- PSA pressure-sensitive adhesive
- the sealing layer can be applied to the blister base part or to the cover film. Conveniently, the sealing layer is transferred from a carrier film with non-stick coating on the Blisterêtteil or the cover sheet.
- the aluminum foil preferably has a thickness of 5 to 100 .mu.m, in particular 7 to 40 .mu.m, and may be in the state of soft, hard or in an intermediate hardness.
- cover films without aluminum as a barrier layer are films or composites with other functional barriers, such as vapor deposited or sputtered metals in vacuum and ceramic thin films of eg SiO x or Al 2 O 3 or applied by a paint, special paints, such as of the type the Ormocere.
- the cover sheet of different papers, plastic films or combinations of these materials can be made.
- the laminates mentioned above may consist of two or more layers, functional layers such as e.g. a barrier layer, usually sandwiched between two layers.
- the laminate may contain more than three layers if additional plastics or metal foil are added for stiffening or improved flatness.
- the inner side sealing layer corresponding plastics are added on the outside.
- the aluminum foil arranged on the inside is usually bare or provided with a layer which prevents fretting corrosion or being influenced by the metal, e.g. with a varnish layer.
- Sealant layers disposed on the cover sheet and / or on the blister bottom portion may incorporate desiccant and oxygen absorber to reduce cross-diffusion of moisture and oxygen and to remove moisture and oxygen from the air in the cup.
- the sealing layers activatable by pressure and / or low heat input are e.g. self-adhesive systems known in the field of self-adhesive labels, cold sealing or resealable packaging. These include as self-adhesive, pressure-sensitive adhesive, etc. Natural and synthetic rubbers, polyacrylates, block copolymers with polystyrene block fractions, polyethylene vinyl acetates and polyurethane based pressure-sensitive adhesives. They are usually used in combination with additives such as resins and plasticizers and / or other excipients, such as antioxidants and fillers.
- the sealing layer can also be applied as a single-sided or double-sided self-adhesive label as a single sheet or continuously.
- the adhesive layers are covered with a release or release coating which is removed prior to application of the adhesive layers in the blister machine.
- the adhesive or sealing layer can also be applied directly to the blister material by the carrier material.
- Suitable support materials for the self-adhesive layers include paper, cellophane, aluminum foil, halogenated plastics such as PVC, PVDC, PCTFE (polychlorotrifluoroethylene), polyfluoroethylenes, eg, polytetrafluoroethylene, polyesters, PEN (polyethylene naphthalate), nitrogen-containing polymers, such as polyamides, polyimides and polyimines, polypropylene, polyethylene, polycarbonate, polystyrene, cycloolefin copolymers, cycloolefin polymers, and combinations of the foregoing.
- halogenated plastics such as PVC, PVDC, PCTFE (polychlorotrifluoroethylene), polyfluoroethylenes, eg, polytetrafluoroethylene, polyesters, PEN (polyethylene naphthalate), nitrogen-containing polymers, such as polyamides, polyimides and polyimines, polypropylene, polyethylene, polycarbonate,
- the plastic films used as support materials may be unstretched, but also mono- or biaxially oriented.
- the thicknesses of the carrier materials are about 4 to 300 ⁇ m for plastic films and, moreover, correspond to the state of the art in terms of production and machine capability for the coatings with the adhesive. From economical and ecological the minimum possible or optimal thicknesses are used.
- the sealing layer is punched during application by means of a carrier film into the regions lying above the cup-shaped depressions in the sealed blister. If the sealing layer is applied in the printing process, this area remains unprinted, ie free from the adhesive layer.
- the cover sheet can be connected to the Blisterêtteil by slight pressure, with little or no heat.
- the commonly used, continuous and clocked methods such as plate sealing, roller sealing and combination rollers / plate sealing can be applied.
- the adhesive layer is directly on the coversheet, then this is applied by controlled pressure. This is especially important with sticky systems, so that the contents do not adhere to the inside of the cover film.
- the self-adhesive layer is part of the blister base part, then it can be applied before or after the formation of the cup-shaped containers in the forming station, before or after the filling of the wells.
- the aluminum foil can be blank on the sealing side.
- a Blisterteil 16 is formed out of a Bodenfolie18 cup-shaped depressions 20 with openings 21 after filling the wells with, for example, tablets 22 by sealing a dish covering and this tightly sealing cover sheet 12 against the Blisterteil 16th sealed.
- cover sheet 12 - a heat-sealable coating 14 on.
- a self-adhesive system 24 is used in the inventive sealing of a blister base part 16 with a cover film 12 instead of a heat-sealable coating 14.
- the self-adhesive system 24 consists of a carrier material 28 with a layer of a pressure-sensitive adhesive 30 (PSA) disposed thereon.
- PSA pressure-sensitive adhesive
- the coated with the pressure-sensitive adhesive 30 carrier material 28 has openings 26 which correspond in number and arrangement to the openings 21 of the cup-shaped containers 20 in Blisterteilteil 16.
- a cover sheet 12 is placed and pressed against the self-adhesive layer 30, resulting in the sealed blister pack 10.
- the seal corresponds to that in US Pat Fig. 1-3 shown method.
- the application of adhesive via a controlled pressure only in the sealing area ie the later in the sealing of the cover sheet 12 against a blister 16 over the wells 20 areas stay glue-free.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Versiegelung von Blisterverpackungen, bei welchem Verfahren ein Blisterbodenteil mit wenigstens einem aus dem Blisterbodenteil herausgeformten napfförmigen Behältnis über eine Siegelschicht mit einer Deckfolie versiegelt wird.The invention relates to a method for sealing blister packs, in which method a blister bottom part with at least one cup-shaped container shaped out of the blister bottom part is sealed via a sealing layer with a cover film.
Blisterverpackungen werden heute zur Verpackung einer grossen Anzahl unterschiedlicher Produkte aus den Bereichen Pharmazie, Medizin, Medizinaltechnik, Kosmetik, Nahrungsergänzungsmittel, Lebensmittel und allgemeine Technik eingesetzt.Today, blister packs are used to package a large number of different products from the pharmaceutical, medical, medical technology, cosmetics, nutritional supplements, food and general technology sectors.
Die in fester, pulvriger, viskoser oder flüssiger Form vorliegenden Füllgüter können fertig in die Verpackung eingelegt werden oder in der Verpackung, z.B. durch Gefriertrocknung, in die entsprechende Darreichungsform gebracht werden.The solids present in solid, powdery, viscous or liquid form may be readily placed in the package or in the package, e.g. by freeze-drying, are placed in the appropriate dosage form.
Zum Öffnen von Blisterverpackungen zur Entnahme von Füllgut bekannte Systeme umfassen u.a. beispielsweise das Durchdrücken des Füllgutes, z.B. einer Tablette, aus dem napfförmigen Behältnis durch die Deckfolie, das Öffnen des napfförmigen Behältnisses durch Peelen der Deckfolie oder das Peelen einer Teilschicht der Deckfolie mit anschliessendem Durchdrücken der Tablette durch eine durch Peelen der ersten Teilschicht freigelegte zweite Teilschicht (Peel-Push Systeme).Systems known for opening blister packs for removal of contents include, but are not limited to: for example, pushing the contents, e.g. a tablet, from the cup-shaped container through the cover sheet, the opening of the cup-shaped container by peeling the cover sheet or peeling a partial layer of the cover sheet with subsequent pressing of the tablet by a peeling of the first part layer exposed second sub-layer (peel-push systems).
Es werden immer mehr Wirkstoffe in Pharmapräparaten (API, Active Pharmaceutical Ingredient) entwickelt, welche empfindlich gegenüber höheren Temperaturen sind. Bei der herkömmlichen Versiegelung der Blisterverpackungen in einem von der Maschinengeschwindigkeit abhängigen Temperaturbereich von 160°C bis 280°C wird das Füllgut durch Strahlungswärme und Wärmeleitung im Packmaterial so stark erwärmt, dass der Wirkstoff Schaden nehmen kann. Dieses Problem kann selbst mit einer direkt nach der Versiegelungsstation angeordneten Kühlstation nicht für alle Produkte behoben werden. Dies gilt besonders bei Verwendung von Deckfolienlaminaten mit Papier und/oder Polyester oder orientiertem Polyamid. Die benötigte Siegeltemperatur ist teilweise so hoch, dass der Deckfolienverbund vorgewärmt werden muss.More and more drugs are being developed in pharmaceutical preparations (API, Active Pharmaceutical Ingredient) which are sensitive to higher temperatures. In the conventional sealing of the blister packs in a dependent of the machine speed temperature range of 160 ° C to 280 ° C, the contents of radiant heat and heat conduction in the The packaging material is heated to such an extent that the active ingredient can be damaged. This problem can not be solved for all products even with a cooling station immediately after the sealing station. This is especially true when using cover film laminates with paper and / or polyester or oriented polyamide. The required sealing temperature is sometimes so high that the cover film composite must be preheated.
Der Erfindung liegt die Aufgabe zugrunde, eine Versiegelung ohne oder nur mit geringer Wärmeeinwirkung zu erreichen, damit das Füllgut nicht durch die Siegelwärme beeinflusst wird.The invention has for its object to achieve a seal with little or no heat, so that the filling material is not affected by the heat of sealing.
Zur erfindungsgemässen Lösung der Aufgabe führt dass die Siegelschicht als selbstklebende, im wesentlichen ohne Zufuhr von Wärme aktivierbare Siegelschicht zwischen Deckfolie und Blisterbodenteil angeordnet und aktiviert wird.To achieve the object of the invention, the sealing layer is arranged and activated as a self-adhesive sealing layer, which can be activated substantially without the supply of heat, between the cover film and the blister base part.
Die erfindungsgemäss verwendeten, selbstklebenden Systeme lassen sich auf alle herkömmlichen Blisterverpackungen übertragen und können vor der Versiegelung als Beschichtung auf die Deckfolie, auf das Blisterbodenteil oder auf beide Blisterbestandteile appliziert werden. Bei Deckfolien kann die selbstklebende Schicht Teil der fertig konfektionierten Rollenware sein. Beim Blistermaterial erfolgt ein Auftrag der selbstklebenden Siegelschicht vorzugsweise erst nach Ausformen der napfförmigen Vertiefungen.The self-adhesive systems used according to the invention can be applied to all conventional blister packs and can be applied before the seal as a coating on the cover sheet, on the Blisterbodenteil or on both blister components. For cover films, the self-adhesive layer can be part of the ready-made roll goods. In the case of the blister material, the self-adhesive sealing layer is preferably applied only after the cup-shaped depressions have been formed.
Die Siegelschicht enthält bevorzugt einen druckempfindlichen Klebstoff (PSA, pressure sensitive adhesive) und wird durch Druck aktiviert.The sealing layer preferably contains a pressure-sensitive adhesive (PSA) and is activated by pressure.
Die Siegelschicht kann auf das Blisterbodenteil oder auf die Deckfolie aufgebracht werden. Zweckmässigerweise wird die Siegelschicht von einer Trägerfolie mit Antihaftbeschichtung auf das Blisterbodenteil oder die Deckfolie übertragen.The sealing layer can be applied to the blister base part or to the cover film. Conveniently, the sealing layer is transferred from a carrier film with non-stick coating on the Blisterbodenteil or the cover sheet.
Vor dem Aufbringen auf das Blisterbodenteil kann die Siegelschicht mit auf die Anordnung der Öffnungen der Näpfe im Blisterbodenteil abgestimmten Öffnungen versehen werden.Before applying to the Blisterbodenteil the sealing layer with on the Arrangement of the openings of the wells in Blisterbodenteil tuned openings are provided.
Als Deckfolie geeignet sind beispielsweise die nachstehend angeführten Laminate mit einer Aluminiumfolie:
- Lack / Aluminiumfolie / Siegelschicht
- Kunststofffolie / Aluminiumfolie / Siegelschicht
- Papier / Aluminiumfolie / Siegelschicht
- Kunststofffolie / Papier / Aluminiumfolie / Siegelschicht
- Papier /Kunststofffolie / Aluminiumfolie / Siegelschicht
- Kunststofffolie / Kunststofffolie / Aluminiumfolie / Siegelschicht
- Lacquer / aluminum foil / sealing layer
- Plastic film / aluminum foil / sealing layer
- Paper / aluminum foil / sealing layer
- Plastic film / paper / aluminum foil / sealing layer
- Paper / plastic film / aluminum foil / sealing layer
- Plastic film / plastic film / aluminum foil / sealing layer
Die Aluminiumfolie weist bevorzugt eine Dicke von 5 bis 100 µm, insbesondere 7 bis 40 µm, auf und kann im Zustand weich, hart oder in einer Zwischenhärte vorliegen.The aluminum foil preferably has a thickness of 5 to 100 .mu.m, in particular 7 to 40 .mu.m, and may be in the state of soft, hard or in an intermediate hardness.
Weitere mögliche Deckfolien ohne Aluminium als Barriereschicht sind Folien oder Verbunde mit anderen funktionelle Barrieren, wie z.B. mit im Vakuum aufgedampften oder gesputterten Metallen und keramischen Dünnschichten aus z.B. SiOx oder Al2O3 oder durch eine Lackierung aufgetragenen, speziellen Lacken, wie z.B. vom Typ der Ormocere.Other possible cover films without aluminum as a barrier layer are films or composites with other functional barriers, such as vapor deposited or sputtered metals in vacuum and ceramic thin films of eg SiO x or Al 2 O 3 or applied by a paint, special paints, such as of the type the Ormocere.
Werden keine Barrieren, z. B. gegen Feuchtigkeit und Sauerstoff, benötigt, so kann die Deckfolie aus verschiedenen Papieren, Kunststofffolien oder Kombinationen dieser Materialien bestehen.If no barriers, z. As against moisture and oxygen, is required, the cover sheet of different papers, plastic films or combinations of these materials can be made.
Als Material für thermoformbare Blisterbodenteile aus Kunststoff können alle auf dem Markt befindlichen thermoformbaren Systeme verwendet werden, z.B.
- PET (Polyethylenterephthalat)
- PVC (Polyvinylchlorid)
- PVC / PVDC (Polyvinylidenchlorid)
- PP (Polypropylen)
- PP/PVDC
- Spezielle Polyethylene
- Laminate mit COC (Cycloolefin-Copolymere), z.B. PET, PA (Polyamid), PP, PVC, PVDC-Folie oder PVDC-Beschichtung, Aclar®
- Laminate mit Aclar®, z.B. PET, PA, PVC; PP; COC; COP (Cycloolefin-Polymere), PVDC-Folie oder -Beschichtung
- Laminate mit COP, z.B. PET, PA, PVC, PP, PVDC-Folie oder PVDC-Beschichtung, Aclar®)
- Laminate PA/PE für medizinische Verpackung
- PET (polyethylene terephthalate)
- PVC (polyvinyl chloride)
- PVC / PVDC (polyvinylidene chloride)
- PP (polypropylene)
- PP / PVDC
- Special polyethylenes
- Laminates with COC (cyclic olefin copolymers) such as PET, PA (polyamide), PP, PVC, PVDC-foil or PVDC coating, Aclar ®
- Laminates with Aclar ® , eg PET, PA, PVC; PP; COC; COP (cycloolefin polymers), PVDC film or coating
- Laminates with COP, eg PET, PA, PVC, PP, PVDC film or PVDC coating, Aclar ® )
- Laminates PA / PE for medical packaging
Die vorstehend angeführten Laminate können aus zwei oder mehreren Lagen bestehen, wobei funktionelle Schichten, wie z.B. eine Barriereschicht, üblicherweise zwischen zwei Schichten im Sandwich angeordnet sind.The laminates mentioned above may consist of two or more layers, functional layers such as e.g. a barrier layer, usually sandwiched between two layers.
Ein anderes, zur Herstellung von Blisterbodenteilen für sogenannte Alu-Alu Blister geeignetes Material ist Formpack®, aus welchem die Blisterbodenteile durch Kaltverformung hergestellt werden. Geeignete Laminate haben beispielsweise folgenden Aufbau:
- biaxial gereckte Kunststofffolie (z. B. oPA, oPET, oPP) / Aluminium / Siegelschicht (z.B. PA, oPA, PE, PVC, oPP, PP, Surlyn®, Aclar®, Barex®, PVDC-Folie oder PVDC-Beschichtung, COC, COP, PET u.a.m.)
- biaxially stretched plastic film (eg. B. oPA, OPET, OPP) / aluminum / sealing layer (for example, PA, oPA, PE, PVC, OPP, PP, Surlyn ®, Aclar ®, Barex ®, PVDC film or PVDC coating, COC , COP, PET, etc.)
Das Laminat kann mehr als drei Schichten enthalten, wenn zur Versteifung oder verbesserter Planlage weitere Kunststoffe oder Metallfolie zugefügt werden. Bevorzugt werden der innenseitigen Siegelschicht entsprechende Kunststoffe auf der Aussenseite zugefügt. Das Gleiche gilt auch für die Innenseite. Beispiele hierfür sind PVC / oPA / Al / PVC, COC / PE / oPA / Al/oPA / COC-PE oder PP / oPA / Al / oPA / PP, um nur drei zu nennen.The laminate may contain more than three layers if additional plastics or metal foil are added for stiffening or improved flatness. Preferably, the inner side sealing layer corresponding plastics are added on the outside. The same applies to the inside. Examples are PVC / oPA / Al / PVC, COC / PE / oPA / Al / oPA / COC-PE or PP / oPA / Al / oPA / PP, to name only three.
Bei Verwendung einer selbstklebenden Deckfolie kann auf eine an der Innenseite angeordnete Siegelschicht verzichtet werden. In diesem Fall ist die innenseitig angeordnete Aluminiumfolie üblicherweise blank oder mit einer Schicht versehen, welche eine Reibkorrosion oder eine Beeinflussung durch das Metall verhindert, z.B. mit einer Lackschicht.When using a self-adhesive cover film, it is possible to dispense with a sealing layer arranged on the inside. In this case, the aluminum foil arranged on the inside is usually bare or provided with a layer which prevents fretting corrosion or being influenced by the metal, e.g. with a varnish layer.
In die an der Deckfolie und/oder am Blisterbodenteil angeordneten Siegelschichten können zur Verringerung der Querdiffusion von Feuchtigkeit und Sauerstoff und zur Entfernung von Feuchtigkeit und Sauerstoff aus der Luft im Napf Trockenmittel und Sauerstoffabsorber integriert sein.Sealant layers disposed on the cover sheet and / or on the blister bottom portion may incorporate desiccant and oxygen absorber to reduce cross-diffusion of moisture and oxygen and to remove moisture and oxygen from the air in the cup.
Die durch Druck und/oder eine geringe Wärmezufuhr aktivierbaren Siegelschichten sind z.B. aus dem Bereich der selbstklebenden Etiketten, Kaltversiegelung oder wiederverschliessbaren Verpackungen bekannte, selbstklebende Systeme. Diese umfassen als selbstklebende, druckempfindliche Haftmasse u.a. Natur- und Synthesekautschuke, Polyacrylate, Blockcopolymere mit Polystyrolblockanteilen, Polyethylenvinylacetate und Polyurethan basierte Haftklebstoffe. Sie werden meist in Kombination mit Zusätzen wie Harzen und Weichmachern und/oder sonstigen Hilfsstoffen, beispielsweise Antioxidantien und auch Füllstoffen eingesetzt.The sealing layers activatable by pressure and / or low heat input are e.g. self-adhesive systems known in the field of self-adhesive labels, cold sealing or resealable packaging. These include as self-adhesive, pressure-sensitive adhesive, etc. Natural and synthetic rubbers, polyacrylates, block copolymers with polystyrene block fractions, polyethylene vinyl acetates and polyurethane based pressure-sensitive adhesives. They are usually used in combination with additives such as resins and plasticizers and / or other excipients, such as antioxidants and fillers.
Die Siegelschicht kann auch als ein- oder beidseitig selbstklebendes Etikett als Einzelblatt oder fortlaufend aufgebracht werden. Damit es nicht zum Verkleben in einem Rollenwickel oder Stapel kommt, sind die Klebeschichten mit einer Release- oder Antihaftschicht, die vor dem Aufbringen der Klebeschichten in der Blistermaschine entfernt wird, abgedeckt.The sealing layer can also be applied as a single-sided or double-sided self-adhesive label as a single sheet or continuously. To prevent sticking in a roll wrap or stack, the adhesive layers are covered with a release or release coating which is removed prior to application of the adhesive layers in the blister machine.
Die klebende bzw. siegelnde Schicht kann auch vom Trägermaterial direkt auf das Blistermaterial aufgebracht werden.The adhesive or sealing layer can also be applied directly to the blister material by the carrier material.
Geeignete Trägermaterialien für die selbstklebenden Schichten sind z.B. Papier, Zellglas, Aluminiumfolie, halogenierte Kunststoffe wie z.B. PVC, PVDC, PCTFE (Polychlortrifluorethylen), Polyfluorethylene, z.B. Polytetrafluorethylen, Polyester, PEN (Polyethylennaphtalat), Stickstoff enthaltende Polymere, wie z.B. Polyamide, Polyimide und Polyimine, Polypropylen, Polyethylen, Polycarbonat, Polystyrol, Cycloolefin-Copolymere, Cycloolefin-Polymere und Kombinationen der vorgenannten Stoffe.Suitable support materials for the self-adhesive layers include paper, cellophane, aluminum foil, halogenated plastics such as PVC, PVDC, PCTFE (polychlorotrifluoroethylene), polyfluoroethylenes, eg, polytetrafluoroethylene, polyesters, PEN (polyethylene naphthalate), nitrogen-containing polymers, such as polyamides, polyimides and polyimines, polypropylene, polyethylene, polycarbonate, polystyrene, cycloolefin copolymers, cycloolefin polymers, and combinations of the foregoing.
Die als Trägermaterialien verwendeten Kunststofffolien können ungereckt, aber auch mono- oder biaxial gereckt sein. Die Dicken der Trägermaterialien betragen für Kunststofffolien etwa 4 bis 300 µm und entsprechen im übrigen bezüglich Herstellung und Maschinenfähigkeit für die Beschichtungen mit dem Klebstoff dem Stand der Technik. Aus ökonomischen und ökologischen werden die minimal möglichen oder optimalen Dicken verwendet.The plastic films used as support materials may be unstretched, but also mono- or biaxially oriented. The thicknesses of the carrier materials are about 4 to 300 μm for plastic films and, moreover, correspond to the state of the art in terms of production and machine capability for the coatings with the adhesive. From economical and ecological the minimum possible or optimal thicknesses are used.
Um zu verhindern, dass das Füllgut im versiegelten Blister beim Transport und beim Öffnen der Blister nicht an der Klebeschicht haften bleibt, ist die Siegelschicht beim Auftrag mittels einer Trägerfolie in den beim versiegelten Blister über den napfförmigen Vertiefungen liegenden Bereichen ausgestanzt. Wird die Siegelschicht im Druckverfahren aufgetragen, so bleibt dieser Bereich unbedruckt, also frei von der Klebeschicht.In order to prevent the filling material in the sealed blister from adhering to the adhesive layer during transport and when the blister is opened, the sealing layer is punched during application by means of a carrier film into the regions lying above the cup-shaped depressions in the sealed blister. If the sealing layer is applied in the printing process, this area remains unprinted, ie free from the adhesive layer.
Wenn die Innenschicht der Deckfolie selbstklebend ist, kann die Deckfolie durch leichten Druck, ohne oder mit geringer Wärmezufuhr, mit dem Blisterbodenteil verbunden werden.If the inner layer of the cover sheet is self-adhesive, the cover sheet can be connected to the Blisterbodenteil by slight pressure, with little or no heat.
Als Siegelverfahren können die üblicherweise eingesetzten, kontinuierlichen und getakteten Verfahren wie Plattensiegelung, Walzensiegelung und Kombination Walzen/Plattensiegelung angewendet werden.As a sealing method, the commonly used, continuous and clocked methods such as plate sealing, roller sealing and combination rollers / plate sealing can be applied.
Wenn sich die Klebeschicht direkt auf der Deckfolie befindet, dann wird diese durch gesteuerten Druck aufgebracht. Dies ist besonders wichtig bei klebrigen Systemen, damit das Füllgut nicht an der Innenseite der Deckfolie haftet.If the adhesive layer is directly on the coversheet, then this is applied by controlled pressure. This is especially important with sticky systems, so that the contents do not adhere to the inside of the cover film.
Ist die selbstklebende Schicht Bestandteil des Blisterbodenteils, so kann sie vor oder nach der Formung der napfförmigen Behältnisse in der Formstation, vor oder nach der Befüllung der Näpfe, aufgebracht werden. In diesem Fall kann die Aluminiumfolie auf der Siegelseite blank sein.If the self-adhesive layer is part of the blister base part, then it can be applied before or after the formation of the cup-shaped containers in the forming station, before or after the filling of the wells. In this case, the aluminum foil can be blank on the sealing side.
Die Verbindung der Deckfolie mit dem Blisterbodenteil erfolgt in der Siegelstation.The compound of the cover sheet with the Blisterbodenteil done in the sealing station.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt schematisch in
- Fig. 1 - 3
- die Versiegelung einer Blisterverpackung nach dem Stand der Technik;
- Fig. 4
- die Draufsicht auf eine erfindungsgemäss verwendetes System mit selbstklebender Siegelschicht;
- Fig. 5
- einen Querschnitt durch das System von
Fig. 4 nach der Linie I-I; - Fig. 6
- einen Querschnitt durch ein Blisterbodenteil;
- Fig. 7 - 9
- die erfindungsgemässe Versiegelung des Blisterbodenteils von
Fig. 6 und einer Deckfolie mittels des selbstklebenden Systems vonFig. 5 im Querschnitt.
- Fig. 1-3
- the sealing of a blister pack according to the prior art;
- Fig. 4
- the top view of a system according to the invention used with self-adhesive sealing layer;
- Fig. 5
- a cross section through the system of
Fig. 4 after the line II; - Fig. 6
- a cross section through a Blisterbodenteil;
- Fig. 7 - 9
- the inventive sealing of Blisterbodenteils of
Fig. 6 and a cover sheet by means of the self-adhesive system ofFig. 5 in cross section.
Bei einer in den
Wie in den
Vor oder nach dem Befüllen der Näpfe 20 des Blisterbodenteils 16 mit z. B. Tabletten 22 wird das mit dem druckempfindlichen Klebstoff 30 beschichtete Trägermaterial 26 auf das Blisterbodenteil 16 aufgesetzt (
Zum Verschliessen der Näpfe 20 im Blisterbodenteil 16 wird eine Deckfolie 12 aufgelegt und gegen die selbstklebende Schicht 30 gedrückt, wodurch sich die versiegelte Blisterpackung 10 ergibt.To close the
Wenn die selbstklebende Schicht 30, wie die heisssiegelfähige Beschichtung 14 bei den Verfahren nach dem Stand der Technik, als vollflächige Beschichtung der Deckfolie 12 eingesetzt wird, entspricht die Versiegelung dem in den
Claims (7)
dadurch gekennzeichnet, dass
die Siegelschicht als selbstklebende Schicht (30) zwischen der Deckfolie (12) und dem Blisterbodenteil (16) angeordnet und die Versiegelung im wesentlichen ohne Zufuhr von Wärme aktiviert wird.Method for sealing blister packs (10), in which method a blister base part (16) has at least one cup-shaped container (20) formed from a bottom film (18) and having an opening (21) over a sealing layer (14) with a cover film (12 ) is sealed,
characterized in that
the sealing layer is arranged as a self-adhesive layer (30) between the cover sheet (12) and the Blisterbodenteil (16) and the seal is activated substantially without the application of heat.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08405042A EP2090510A1 (en) | 2008-02-15 | 2008-02-15 | Method for sealing blister packaging |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08405042A EP2090510A1 (en) | 2008-02-15 | 2008-02-15 | Method for sealing blister packaging |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2090510A1 true EP2090510A1 (en) | 2009-08-19 |
Family
ID=39577609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08405042A Withdrawn EP2090510A1 (en) | 2008-02-15 | 2008-02-15 | Method for sealing blister packaging |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2090510A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103419953A (en) * | 2013-08-23 | 2013-12-04 | 广州市铭慧包装机械有限公司 | Oriented cover compressing and conveying device for directional bowl covers |
GB2630071A (en) * | 2023-05-16 | 2024-11-20 | Boltsoft Solutions Ltd | Method and apparatus and blister component for forming a blister pack |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3472723A (en) * | 1964-10-14 | 1969-10-14 | Jerome H Lemelson | Container manufacture |
US6270871B1 (en) * | 1996-09-27 | 2001-08-07 | Avery Dennison Corporation | Overlaminated pressure-sensitive adhesive construction |
US20030079446A1 (en) * | 2001-10-31 | 2003-05-01 | Robotic Vision Systems, Inc. | Method and apparatus for tensioning cover tape |
US20050252600A1 (en) * | 2004-05-13 | 2005-11-17 | Van Driesten Sjoerd J | Method of making a container |
-
2008
- 2008-02-15 EP EP08405042A patent/EP2090510A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3472723A (en) * | 1964-10-14 | 1969-10-14 | Jerome H Lemelson | Container manufacture |
US6270871B1 (en) * | 1996-09-27 | 2001-08-07 | Avery Dennison Corporation | Overlaminated pressure-sensitive adhesive construction |
US20030079446A1 (en) * | 2001-10-31 | 2003-05-01 | Robotic Vision Systems, Inc. | Method and apparatus for tensioning cover tape |
US20050252600A1 (en) * | 2004-05-13 | 2005-11-17 | Van Driesten Sjoerd J | Method of making a container |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103419953A (en) * | 2013-08-23 | 2013-12-04 | 广州市铭慧包装机械有限公司 | Oriented cover compressing and conveying device for directional bowl covers |
CN103419953B (en) * | 2013-08-23 | 2015-09-02 | 广州市铭慧机械股份有限公司 | There is the orientation conveying pressing device of directivity bowl cover |
GB2630071A (en) * | 2023-05-16 | 2024-11-20 | Boltsoft Solutions Ltd | Method and apparatus and blister component for forming a blister pack |
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