EP1525089A1 - Feuille de scellement sterilisable pourvue d'une couche barriere - Google Patents

Feuille de scellement sterilisable pourvue d'une couche barriere

Info

Publication number
EP1525089A1
EP1525089A1 EP03784043A EP03784043A EP1525089A1 EP 1525089 A1 EP1525089 A1 EP 1525089A1 EP 03784043 A EP03784043 A EP 03784043A EP 03784043 A EP03784043 A EP 03784043A EP 1525089 A1 EP1525089 A1 EP 1525089A1
Authority
EP
European Patent Office
Prior art keywords
layer
sealing film
barrier layer
film according
sterilizable
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Withdrawn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
EP03784043A
Other languages
German (de)
English (en)
Inventor
Günter Schubert
Guy Boiron
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 Deutschland Holdings GmbH and Co KG
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 Deutschland Holdings GmbH and Co KG filed Critical Alcan Deutschland Holdings GmbH and Co KG
Publication of EP1525089A1 publication Critical patent/EP1525089A1/fr
Withdrawn legal-status Critical Current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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin 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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/55—Liquid crystals
    • 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
    • B32B2307/70—Other properties
    • B32B2307/704—Crystalline
    • 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
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • 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
    • B32B2369/00—Polycarbonates
    • 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
    • B32B2377/00—Polyamides

Definitions

  • the invention relates to a sterilizable sealing film with a substrate, a primer layer and at least one extruded function layer.
  • Sterilizable sealing foils the substrates of which consist, for example, of aluminum, plastic or paper, generally have a primer layer as a primer for extrusion coatings.
  • the functional layers applied by extrusion are, for example, welding, sealing and / or peeling layers.
  • sterilizable, peelable (extrusion) coatings especially lids for polypropylene shells or shells with polypropylene on the inside, are only partially resistant to filling material components. This can manifest itself in inadequate seal seam strength, inadequate peel resistance when opening, pellicle or thread formation when opening the container or in delamination of partial layers or the complete coating. This failure occurs due to migration of filling material components into the layers of the mostly coextruded extrudate and weakening of these layers at interfaces with one another or cohesive weakening of individual or all layers, especially during heat treatments, such as, for example Pasteurize or sterilize. Adhesion layers adjacent to aluminum as the substrate are particularly sensitive when in particular fat components (essentially triglycerides and fatty acids) are absorbed.
  • the adhesion-promoting interface can be protected in a complex manner, for example by polyimide, or epoxy coating or chemical conversion treatment of the aluminum.
  • this treatment is ineffective in the case of cohesive failure of the adhesion promoter or adhesive failure at the interface with the coating / primer or pretreatment.
  • heat seal lacquers based on VC polymers, acrylates, epoxy resins consisting of PVC polymers or acrylates generally have a good barrier effect for filling components such as water, lactic acid, acetic acid and salt, so that these filling components, which adhere to substrates such as Al -Foil can adversely affect the surface of the aluminum.
  • extrusion coatings made of ethylene or polypropylene (co) polymers or mixtures offer only moderate protection against such filling material components, so that greater attention needs to be paid to the adhesion and the filling material resistance, especially at elevated temperatures.
  • the present invention is based on the object of providing a sterilizable sealing film in which migration of components of the Filling material within the film is reduced or avoided entirely.
  • the previously derived and demonstrated object is achieved in that an extruded barrier layer is provided between the primer layer and the extruded functional layer to prevent the migration of components of the filling material.
  • the arrangement of such a barrier layer between the primer layer and the functional layer ensures that the composite is free of migratory substances, thereby providing an easy-to-manufacture, sterilizable sealing film which, in particular, ensures the safe use of adhesive and easy-to-use, inexpensive, but not yet usable due to lack of filling material resistance Primer systems enabled.
  • This sterilizable sealing film requires, for example, shorter or no necessary curing times and / or has a higher product safety.
  • a major advance in the sterilizable sealing film according to the invention is that the adhesion-promoting polymer, the primer, is protected against absorption and migration of, in particular, fat components to the interface with the aluminum or the substrate.
  • a barrier layer provided in accordance with the invention protects both adhesive interfaces and the adhesive agent via its thickness from excessive absorption or enrichment with migratory material, particularly during sterilization and also during storage of the container after sterilization. Because the barrier layer according to a first embodiment has good adhesive properties on the primer layer, the layer system according to the invention can be constructed very simply.
  • an adhesive agent layer and / or a compatibility agent layer is advantageously provided between the primer layer and the barrier layer in order to produce the adhesive properties.
  • a compatibility mediator layer is provided between the barrier layer and the functional layer significantly expands the spectrum of the materials that can be used for the barrier layer.
  • the barrier layer, the adhesive layer and / or the compatibility agent layer are coextruded with the 'functional layer, the extrusion coating is ensured in a single step.
  • the barrier plastic for producing the barrier layer provided according to the invention is targeted according to the migratable components of the layers or the filling material to be expected and, with regard to the sterilization process, its temperature resistance select.
  • Particularly suitable polymers for the barrier layer provided according to the invention are polyamide, modified polyamide, polyamide 6, amorphous or crystalline polycarbonate, polyester, liquid-crystalline polymers, polyolefins, filled polymers or, for example, polyolefins which crosslink under the influence of temperature and moisture.
  • Suitable filling components for the filled polymers are, for example, mica, talc or so-called nanoparticles.
  • the crosslinking of the polyolefins, for example under the influence of temperature and moisture, can be produced in particular by silane.
  • the peel resistance of the sterilizable sealing film can be determined by the additive content, the heat treatment temperature and time , especially the sterilization temperature and time.
  • the weakening can be done specifically by the components on the product side of the packaging.
  • the embodiment shown in the single figure of a sterilizable sealing film 1 according to the invention has a substrate 2 made of aluminum in the embodiment shown.
  • This substrate 2 is provided with a primer layer 3 as a primer for the extrusion coating.
  • an extrusion coating was carried out by coextruding a barrier layer 4 provided according to the invention, a compatibility agent layer 5 and a functional layer 6.
  • an adhesion promoter layer can also be used between these two layers, which is preferably coextruded together with the barrier layer 4, the compatibility promoter layer 5 and the functional layer 6.
  • a side effect of the arrangement according to the invention of a barrier layer 4 between the primer layer 3 and the functional layer 6 is that, under certain circumstances, expensive functional layers, consisting for example of peel mixtures, can be replaced by the relatively inexpensive barrier material.
  • the use of two or more functional layers instead of, as shown, a functional layer 6 is possible in order to adapt the sterilizable sealing film 1 according to the invention to your intended use.

Landscapes

  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

L'invention concerne une feuille de scellement stérilisable comprenant un substrat (2), une couche primaire (3) ainsi qu'au moins une couche fonctionnelle extrudée (6). L'objectif de cette invention est d'améliorer cette feuille de scellement stérilisable de façon à contraindre la liberté de migration de ses composants. A cet effet, une couche barrière extrudée (4) destinée à empêcher au moins la migration de composants de la matière de remplissage est ménagée entre la couche primaire (3) et la couche fonctionnelle extrudée (6).
EP03784043A 2002-08-03 2003-07-23 Feuille de scellement sterilisable pourvue d'une couche barriere Withdrawn EP1525089A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10235584 2002-08-03
DE10235584A DE10235584A1 (de) 2002-08-03 2002-08-03 Sterilisierbare Siegelfolie mit Barriereschicht
PCT/EP2003/008018 WO2004014645A1 (fr) 2002-08-03 2003-07-23 Feuille de scellement sterilisable pourvue d'une couche barriere

Publications (1)

Publication Number Publication Date
EP1525089A1 true EP1525089A1 (fr) 2005-04-27

Family

ID=30469394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03784043A Withdrawn EP1525089A1 (fr) 2002-08-03 2003-07-23 Feuille de scellement sterilisable pourvue d'une couche barriere

Country Status (4)

Country Link
EP (1) EP1525089A1 (fr)
AU (1) AU2003254569A1 (fr)
DE (1) DE10235584A1 (fr)
WO (1) WO2004014645A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004020076A1 (de) * 2004-04-24 2005-11-17 Bayerische Motoren Werke Ag Schlauchloser Fahrzeugluftreifen
AT13631U1 (de) * 2011-03-16 2014-05-15 Constantia Teich Gmbh Tiefziehbare, sterilisierbare Platine

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1453621A (en) * 1972-11-10 1976-10-27 Toyo Seikan Kaisha Ltd Sterilised food packages
DE2719113A1 (de) * 1977-04-29 1978-11-09 Sengewald Kg Karl H Verbundfolie aus kunststoffolien fuer verpackungen
DE4123672A1 (de) * 1991-07-17 1993-01-21 Basf Ag Siegelfaehige, peelbare kunststoffolie
CH684746A5 (de) * 1993-02-25 1994-12-15 Alusuisse Lonza Services Ag Laminat.
DE4306963A1 (de) * 1993-03-05 1994-09-08 Wolff Walsrode Ag Weiß-opake Sperrschichtfolie mit ausgezeichneter Planlage
EP0686500A3 (fr) * 1994-06-06 1998-05-13 Wolff Walsrode Ag Film multicouche ayant du cÔté thermosoudable deux couches à base de copolymères de propylène
DE19515254C2 (de) * 1995-04-26 1998-06-04 Fresenius Ag PVC-freie Mehrschichtfolie, Verfahren zur Herstellung derselben und deren Verwendung
WO1997017198A1 (fr) * 1995-11-04 1997-05-15 Tetra Laval Holding & Finance S.A. Feuilles barrieres multicouches en papier ou analogue thermodeformables
ATE273253T1 (de) * 1996-02-28 2004-08-15 Fraunhofer Ges Forschung Barriereschichten
EP0845350A1 (fr) * 1996-11-29 1998-06-03 Alusuisse Technology & Management AG Feuille composite déformable à froid
EP1010519A1 (fr) * 1998-12-16 2000-06-21 Alusuisse Technology & Management AG Feuille stratifiée stérilisable
EP1060875A3 (fr) * 1999-06-15 2001-12-12 Alcan Technology & Management AG Feuille stratifiée stérilisable
EP1199158A1 (fr) * 2000-10-20 2002-04-24 Alcan Technology & Management AG Matériau d'emballage d'articles stériles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004014645A1 *

Also Published As

Publication number Publication date
AU2003254569A1 (en) 2004-02-25
DE10235584A1 (de) 2004-02-19
WO2004014645A1 (fr) 2004-02-19

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Owner name: ALCAN TECHNOLOGY & MANAGEMENT AG

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