DE4102367A1 - Composite film based on polyolefin(s) - comprises poly-olefinic outer layers enclosing internal polymeric or thin metallic barrier layer to resist moisture and oxygen@ - Google Patents

Composite film based on polyolefin(s) - comprises poly-olefinic outer layers enclosing internal polymeric or thin metallic barrier layer to resist moisture and oxygen@

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Publication number
DE4102367A1
DE4102367A1 DE4102367A DE4102367A DE4102367A1 DE 4102367 A1 DE4102367 A1 DE 4102367A1 DE 4102367 A DE4102367 A DE 4102367A DE 4102367 A DE4102367 A DE 4102367A DE 4102367 A1 DE4102367 A1 DE 4102367A1
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DE
Germany
Prior art keywords
layer
composite film
oxygen
barrier layer
polyethylene
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Withdrawn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
DE4102367A
Other languages
German (de)
Inventor
Georg Schwinn
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.)
Mondi Gronau GmbH
Original Assignee
M&W Verpackungen Mildenberger and Willing GmbH
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 M&W Verpackungen Mildenberger and Willing GmbH filed Critical M&W Verpackungen Mildenberger and Willing GmbH
Priority to DE4102367A priority Critical patent/DE4102367A1/en
Publication of DE4102367A1 publication Critical patent/DE4102367A1/en
Withdrawn legal-status Critical Current

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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
    • B32B27/32—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
    • 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
    • B32B15/082—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 vinyl resins; comprising acrylic resins
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/42—Alternating layers, e.g. ABAB(C), AABBAABB(C)
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7244—Oxygen barrier
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier
    • 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
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B32B2323/043—HDPE, i.e. high density polyethylene
    • 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
    • B32B2329/00—Polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals
    • B32B2329/04—Polyvinylalcohol
    • 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
    • B32B2331/00—Polyvinylesters
    • B32B2331/04—Polymers of vinyl acetate, e.g. PVA
    • 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
    • B32B2439/40—Closed containers
    • B32B2439/46—Bags
    • 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
    • B32B2439/70—Food packaging

Abstract

A composite film structure based on polyolefin polymers forms a barrier against smells, water vapour or oxygen and comprises a first layer of medium or high density polyethylene, a central barrier layer and a third layer of polyethylene, polyethylene copolymer or polypropylene. The barrier layer may be composed of either a vinyl alcohol, acrylonitrile or EVA based polymer or alternatively an extremely thin metal, metal oxide or silicon oxide layer. Application of the metal layer is by direct or transfer metallisation or by vapour deposition. USE/ADVANTAGE - The film is suitable for packaging esp. foods sensitive to moisture, oxygen, etc. and can be reused or recycled.

Description

Die Erfindung betrifft eine Verbundfolie auf der Basis von Polyolefinen mit Barriereeigenschaften insbesondere gegenüber Aromen, Sauerstoff und Wasserdampf.The invention relates to a composite film based of polyolefins with barrier properties in particular against flavors, oxygen and water vapor.

Es ist bekannt, Polyolefinkaschierfolien durch Extrusion Barriereeigenschaften, insbesondere gegenüber Aromen, Sauerstoff und Wasserdampf, zu vermitteln. Hierfür werden Äthylvinylalkoholcopolymerisate bevorzugt verwendet. Es sind auch Methoden bekannt, Polyolefine mit Polyvinylidenchlorid als Barrierematerial zu beschichten. Weitere bekannte Verbundfolien, welche Barriereeigenschaften aufweisen, bestehen aus Trägerfolien, z. B. orientiertem Polypropylen, Polyester, Polyamid oder orientiertem Polyamid, welche zum Teil metallisiert sind oder auch teilweise Polyvinylidenchloridbeschichtungen aufweisen. Diese Trägerfolien sind gegen Polyolefinfolien kaschiert. Einsatzgebiete sind vor allem sauerstoff- und wasserdampfempfindliche Füllgüter, vornehmlich Lebensmittel, Genußwaren, Süßwaren etc.It is known to use polyolefin laminating films Extrusion barrier properties, especially opposite Aromas, oxygen and water vapor. For this purpose, ethyl vinyl alcohol copolymers preferably used. Methods are also known Polyolefins with polyvinylidene chloride as a barrier material to coat. Other well-known composite films, which have barrier properties consist of Carrier films, e.g. B. oriented polypropylene, polyester, Polyamide or oriented polyamide, some of which are metallized or partially polyvinylidene chloride coatings exhibit. These carrier films are laminated against polyolefin films. Areas of application are especially sensitive to oxygen and water vapor Filling goods, mainly food, delicacies, Confectionery etc.

Außer den genannten Verbundfolien auf der Basis von Polymerisaten sind auch solche bekannt, bei denen eine Schicht aus einer Aluminiumfolie besteht. In addition to the above-mentioned composite films based on Polymers are also known in which one Layer consists of an aluminum foil.  

Alle bisher für Verpackungszwecke eingesetzten Verbundfolien weisen den Nachteil auf, daß ihre Herstellung oder ihre Entsorgung unter Umweltschutzgesichtspunkten problematisch sind. Folien mit einem Anteil an Polyvinylidenchlorid sind wegen des Chlorgehalts dieses Polymers unerwünscht. Die Herstellung von Aluminium erfordert sehr viel Energie. Bei den Polyolefinkaschierfolien mit einer Barriereschicht aus Äthylvinylalkoholcopolymerisaten ist diese Barriereschicht bisher relativ dick. Es handelt sich also bei diesen und anderen Verbundfolien um ein Verpackungsmaterial, das zwei oder mehr unterschiedliche Werkstoffe in hohen Anteilen enthält. Hierdurch wird eine Wiederverwendung (Recycling) des Verpackungsabfalls erschwert.All composite films previously used for packaging purposes have the disadvantage that their manufacture or their disposal from an environmental point of view are problematic. Films containing polyvinylidene chloride are this because of the chlorine content Polymers undesirable. The production of aluminum requires a lot of energy. With the polyolefin laminating films with a barrier layer made of ethyl vinyl alcohol copolymers this barrier layer has so far been relative thick. So these and other composite films are involved to a packaging material that two or more different materials in high proportions contains. This will reuse it (Recycling) of packaging waste more difficult.

Es ist Aufgabe der vorliegenden Erfindung, Verbundfolien zu schaffen, die die geschilderten Nachteile des Standes der Technik vermeiden und verbesserte Möglichkeiten zur Entsorgung bzw. Wiederaufbereitung bieten. Die Folien sollen gleichzeitig gute Barriereeigenschaften aufweisen.It is an object of the present invention to provide composite films to create the outlined disadvantages of the stand Avoid technology and improved ways to Offer disposal or reprocessing. The slides should also have good barrier properties.

Überraschenderweise wurde gefunden, daß diese Aufgabe durch eine Dreischichtfolie gelöst werden kann, deren Außenschichten aus Polyolefinfolien bestehen, zwischen denen eine relativ dünne Barriereschicht angeordnet ist. Da beide Außenschichten aus demselben oder sehr ähnlichem Material bestehen, wird die Entsorgung der Folie erleichtert. Die relativ dünne Barriereschicht bildet nur einen geringen Anteil der gesamten Verbundfolie und beeinträchtigt eine Aufbereitung und Wiederverwendung des Verpackungsmaterials nicht. Es war überraschend, daß trotz der geringen Schichtstärke der Barriereschicht eine zuverlässige Verpackungsqualität erzielt wird.Surprisingly, it was found that this task can be solved by a three-layer film, the The outer layers consist of polyolefin films, between which is arranged a relatively thin barrier layer. Because both outer layers are made of the same or very similar Material, the disposal of the film is facilitated. The relatively thin barrier layer only forms a small proportion of the total composite film and affects reprocessing and reuse of the packaging material. It was surprising that despite the thin layer of the barrier layer reliable packaging quality is achieved.

Gegenstand der Erfindung ist also eine Verbundfolie der eingangs genannten Art, die gekennzeichnet ist durch eine erste, aus Polyethylen mittlerer oder hoher Dichte bestehende Schicht, eine mittlere Barriereschicht und eine dritte, aus Polyethylen der Dichte 0,90 bis 0,96, Polypropylen oder Polyethylencopolymerisat bestehende Schicht.The invention therefore relates to a composite film initially mentioned type, which is characterized by  a first, made of medium or high density polyethylene existing layer, a middle barrier layer and a third, made of polyethylene with a density of 0.90 to 0.96, Polypropylene or polyethylene copolymer existing Layer.

Die Barriereschicht besteht vorteilhaft entweder aus einem Polymerisat auf Basis von Vinylalkohol, Acrylnitril oder Äthylvinylalkohol. Diese Barrierematerialien sind an sich bekannt, wurden aber bisher in größerer Schichtstärke eingesetzt.The barrier layer advantageously consists of either a polymer based on vinyl alcohol, acrylonitrile or ethyl vinyl alcohol. These barrier materials are known per se, but have so far been larger Layer thickness used.

Die Barriereschicht kann vorteilhafterweise alternativ auch eine durch Direkt- oder Transfermetallisierung aufgebrachte oder aufgedampfte Metall-, Metalloxid- oder Siliciumoxidschicht mit einer Schichtdicke von 100 bis 400 Ångström (1 Å=10⁻¹⁰ m) sein. Diese Schichtdicke von 100 bis 400 Ångström stellt gegenüber den bisher eingesetzten Aluminiumfolien mit wesentlich größerer Schichtdicke (7-12 µm=70 000-120 000 Å) unter Umweltgesichtspunkten eine erhebliche Verbesserung dar. Dennoch wird eine hohe Barrierewirkung erzielt. Die Aluminiumschicht ist so dünn, daß sie das Recycling nicht behindert.The barrier layer can advantageously alternatively also one by direct or transfer metallization applied or evaporated metal, metal oxide or Silicon oxide layer with a layer thickness of 100 to 400 angstroms (1 Å = 10⁻¹⁰ m). This layer thickness from 100 to 400 angstroms compared to the previous used aluminum foils with much larger Layer thickness (7-12 µm = 70,000-120,000 Å) below Environmental considerations represent a significant improvement. Nevertheless, a high barrier effect is achieved. The aluminum layer is so thin that it can be recycled not disabled.

Die erste Schicht ist vorteilhaft zwischen 20 bis 100 µm dick; die dritte Schicht weist vorteilhaft eine Schichtdicke von 10 bis 40 µm auf.The first layer is advantageously between 20 to 100 microns thick; the third layer advantageously has one Layer thickness of 10 to 40 microns.

Da Verpackungen üblicherweise mit Hinweisen auf ihren Inhalt und auch mit Werbung bedruckt sind, ist die Verbundfolie vorteilhaft auf einer ihrer Außenseiten oder auf der innenliegenden Seite der ersten Schicht bedruckt. Hierdurch können Aufkleber oder eine zusätzliche Umverpackung vermieden werden, so daß die Umweltbelastung weiter reduziert wird. Since packaging is usually with references to their The composite film is content and also printed with advertising advantageous on one of its outsides or on the inside of the first layer printed. This can be a sticker or an additional Outer packaging can be avoided, so that the environmental impact is further reduced.  

Die Erfindung betrifft auch die Verwendung einer erfindungsgemäßen Verbundfolie zur Herstellung von Verpackungen. Insbesondere wird die erfindungsgemäße Verbundfolie vorteilhaft zur Herstellung von Verpackungsbeuteln eingesetzt. Hierbei ist die aus Polyethylen, PE-Copolymerisat oder Polypropylen bestehende dritte Schicht dem Füllgut zugewandt. Diese Polymere weisen gute Heißsiegeleigenschaften auf, so daß die Beutel durch ein einfaches Heißsiegelverfahren verschweißt werden können.The invention also relates to the use of an inventive Composite film for the production of packaging. In particular, the composite film according to the invention used advantageously for the production of packaging bags. This is made of polyethylene, PE copolymer or polypropylene existing third layer of the product facing. These polymers have good heat sealing properties on, so that the bags by a simple Heat sealing processes can be welded.

Die Beutel sind zur Aufnahme einer Vielzahl von Füllgütern geeignet. So können beispielsweise Gebäck, Erdnüsse, aber auch Mayonnaise, Ketchup oder Senf zuverlässig verpackt werden.The bags are designed to hold a wide range of products suitable. For example, pastries, peanuts, but also reliable mayonnaise, ketchup or mustard be packed.

Die aus der erfindungsgemäßen Verbundfolie hergestellten Verpackungen können nach Gebrauch auch dann einer Wiederverwendung zugeführt werden, wenn es sich um "Post Consumer Waste" handelt, der nicht zu sehr verschmutzt ist. Die gereinigten, entleerten Verpackungen, Umhüllungen und dergleichen werden zerrissen und mit jungfräulichem ("virgin") Material und Material anderer Herkunft, jedoch gleicher Monomerstruktur, gemischt und geschmolzen. Aus ihnen lassen sich anschließend unterwertige Produkte wie Müllsäcke, Folien, Blumentöpfe und dergleichen herstellen.Those produced from the composite film according to the invention Packaging can also be used after use Can be reused if it is "Post Consumer Waste "that is not too dirty is. The cleaned, emptied packaging, Wraps and the like are torn and with virgin material and material of others Origin, but the same monomer structure, mixed and melted. From them you can then inferior products such as garbage bags, foils, flower pots and the like.

Im folgenden werden Ausführungsbeispiele der Erfindung anhand der Zeichnung näher erläutert. Es zeigtThe following are exemplary embodiments of the invention explained in more detail with reference to the drawing. It shows

Fig. 1 einen Schnitt durch eine erfindungsgemäße Verbundfolie, Fig. 1 shows a section through a composite film,

Fig. 2 einen Schnitt durch eine weitere Ausführungsform der erfindungsgemäßen Verbundfolie und Fig. 2 shows a section through a further embodiment of the composite film of the invention and

Fig. 3 einen Schnitt durch einen Verpackungsbeutel, der unter Verwendung der erfindungsgemäßen Verbundfolie hergestellt worden ist. Fig. 3 shows a section through a packaging bag that has been produced using the composite film according to the invention.

In Fig. 1 ist eine Verbundfolie dargestellt, deren erste Schicht 1 aus zwei verklebten Schichten aus Polyethylen mittlerer Dichte und einer vermittelnden Schicht 1′ als Klebe- und/oder Druckschicht besteht. Eine Barriereschicht aus einem Äthylvinylalkoholcopolymerisat mit einer Schichtdicke von 18-20 µm ist zwischen der ersten (Doppel-) Schicht 1 und einer dritten Schicht 3 angeordnet. Die dritte Schicht 3 besteht aus Polyethylen der Dichte 0,90 bis 0,96. Die Schichtdicken der ersten und dritten Schicht betragen 30-80 µm bzw. 10-30 µm.In Fig. 1, a composite film is shown, the first layer 1 consists of two bonded layers of medium density polyethylene and a mediating layer 1 'as an adhesive and / or pressure layer. A barrier layer made of an ethyl vinyl alcohol copolymer with a layer thickness of 18-20 μm is arranged between the first (double) layer 1 and a third layer 3 . The third layer 3 consists of polyethylene with a density of 0.90 to 0.96. The layer thicknesses of the first and third layers are 30-80 µm and 10-30 µm, respectively.

Fig. 2 zeigt eine Verbundfolie bei der zwischen einer ersten Schicht 1 aus Polypropylen und einer dritten Schicht 3 aus Polypropylen eine aufgedampfte Aluminiumschicht 2 in einer Stärke von 250 Ångström als Barriereschicht 3 dient. Fig. 2 shows a laminated film in which between a first layer 1 made of polypropylene and a third layer 3 of polypropylene a vapor-deposited aluminum layer 2 in a thickness of 250 angstroms is used as a barrier layer 3.

Die Sauerstoffdurchlässigkeit der vorgenannten, anhand der Fig. 1 und 2 erläuterten Folien nach DIN liegt unter 4 ml/m²/24 h. Es werden Sauerstoffdiffusionswerte zwischen 1,1-3 ml/m³/24 h gemessen.The oxygen permeability of the aforementioned films according to DIN explained with reference to FIGS. 1 and 2 is less than 4 ml / m 2/24 h. Oxygen diffusion values between 1.1-3 ml / m³ / 24 h are measured.

Fig. 3 zeigt einen Verpackungsbeutel, der aus der Verbundfolie gemäß Fig. 1 hergestellt worden ist. Zwei Abschnitte der Verbundfolie sind so angeordnet, daß die Schicht 3 aus Polyethylen dem Füllgut zugewandt ist. Die Folienabschnitte sind an allen Rändern miteinander verschweißt. Die Schweißnaht 4 sichert einen zuverlässigen Verschluß. FIG. 3 shows a packaging bag which has been produced from the composite film according to FIG. 1. Two sections of the composite film are arranged so that the layer 3 made of polyethylene faces the filling material. The foil sections are welded together on all edges. The weld 4 ensures a reliable closure.

Claims (5)

1. Verbundfolie auf Basis von Polyolefinen mit Barriereeigenschaften insbesondere gegenüber Aromen, Sauerstoff und Wasserdampf, dadurch gekennzeichnet, daß zur Befähigung der Folie zum Recycling die Folie zusammengesetzt ist aus
  • a) einer ersten, aus Polyethylen mittlerer oder hoher Dichte bestehenden Schicht (1),
  • b) einer mittleren Barriereschicht (2), die
    • bα) aus einem Polymerisat auf Basis von Vinylalkohol, Acrylnitril oder Äthylvinylalkohol besteht und die eine Schichtdicke zwischen 10 und 30 µm aufweist; oder
    • bβ) eine durch Direkt- oder Transfermetallisierung aufgebrachte oder aufgedampfte Metall-, Metalloxid- oder Siliciumoxidschicht mit einer Schichtdicke im Bereich von 100 bis 400 Ångström (1 bis 4 · 10⁻⁸ m) aufweist, und
  • c) einer dritten, aus Polyethylen, Polyethylencopolymerisat oder der Polypropylen bestehenden Schicht (3).
1. Composite film based on polyolefins with barrier properties, in particular against aromas, oxygen and water vapor, characterized in that the film is composed of to enable the film to be recycled
  • a) a first layer ( 1 ) consisting of medium or high density polyethylene,
  • b) a middle barrier layer ( 2 ), the
    • bα) consists of a polymer based on vinyl alcohol, acrylonitrile or ethyl vinyl alcohol and which has a layer thickness between 10 and 30 µm; or
    • bβ) has a metal, metal oxide or silicon oxide layer applied or evaporated by direct or transfer metallization with a layer thickness in the range from 100 to 400 angstroms (1 to 4 · 10⁻⁸ m), and
  • c) a third layer ( 3 ) consisting of polyethylene, polyethylene copolymer or the polypropylene.
2. Verbundfolie nach Anspruch 1, dadurch gekennzeichnet, daß die erste Schicht (1) eine Schichtdicke von 20 bis 100 µm und die dritte Schicht (3) eine Schichtdicke von 10 bis 40 µm aufweisen.2. Composite film according to claim 1, characterized in that the first layer ( 1 ) has a layer thickness of 20 to 100 µm and the third layer ( 3 ) has a layer thickness of 10 to 40 µm. 3. Verbundfolie nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie auf einer ihrer Außenseiten oder auf der innenliegenden Seite der ersten Schicht (1) bedruckt ist.3. Composite film according to claim 1 or 2, characterized in that it is printed on one of its outer sides or on the inner side of the first layer ( 1 ). 4. Verwendung einer Verbundfolie nach einem der Ansprüche 1 bis 3 zur Herstellung von Verpackungen.4. Use of a composite film according to one of the Claims 1 to 3 for the production of packaging. 5. Verwendung einer Verbundfolie nach einem der Ansprüche 1 bis 3 zur Herstellung von Verpackungsbeuteln.5. Use of a composite film according to one of the Claims 1 to 3 for the production of packaging bags.
DE4102367A 1991-01-28 1991-01-28 Composite film based on polyolefin(s) - comprises poly-olefinic outer layers enclosing internal polymeric or thin metallic barrier layer to resist moisture and oxygen@ Withdrawn DE4102367A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4102367A DE4102367A1 (en) 1991-01-28 1991-01-28 Composite film based on polyolefin(s) - comprises poly-olefinic outer layers enclosing internal polymeric or thin metallic barrier layer to resist moisture and oxygen@

Applications Claiming Priority (1)

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DE4102367A DE4102367A1 (en) 1991-01-28 1991-01-28 Composite film based on polyolefin(s) - comprises poly-olefinic outer layers enclosing internal polymeric or thin metallic barrier layer to resist moisture and oxygen@

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
EP0628407A1 (en) * 1993-06-08 1994-12-14 Ajinomoto Co., Inc. Double-packaged easily oxidizable article
DE19802333A1 (en) * 1998-01-23 1999-07-29 Leybold Systems Gmbh Forming barrier layers for gaseous or liquid substances on plastics substrate, useful for packaging material
DE19802506A1 (en) * 1998-01-23 1999-07-29 Leybold Systems Gmbh Production of barrier layers for gaseous and/or liquid materials, especially hydrocarbons, oxygen and water vapor, on plastic substrates
EP1210277B1 (en) * 1999-06-11 2003-10-22 SCA Hygiene Products AB The use of moisture impervious packaging units and package for absorbent articles comprising moisture-sensitive additives
DE102004020076A1 (en) * 2004-04-24 2005-11-17 Bayerische Motoren Werke Ag Tubeless vehicle tire has an inner airtight layer of composite thermoplastic film forming part of the tire inner walls
WO2019020275A1 (en) * 2017-07-26 2019-01-31 Bischof + Klein Se & Co. Kg Packaging container and film production

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EP0026106A1 (en) * 1979-09-24 1981-04-01 Alan Hardwick Windle Method of bonding two surfaces together and article obtained by this method
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EP0628407A1 (en) * 1993-06-08 1994-12-14 Ajinomoto Co., Inc. Double-packaged easily oxidizable article
US5763028A (en) * 1993-06-08 1998-06-09 Ajinomoto Co., Inc. Doubly-packaged easily oxidizable article
DE19802333A1 (en) * 1998-01-23 1999-07-29 Leybold Systems Gmbh Forming barrier layers for gaseous or liquid substances on plastics substrate, useful for packaging material
DE19802506A1 (en) * 1998-01-23 1999-07-29 Leybold Systems Gmbh Production of barrier layers for gaseous and/or liquid materials, especially hydrocarbons, oxygen and water vapor, on plastic substrates
EP1210277B1 (en) * 1999-06-11 2003-10-22 SCA Hygiene Products AB The use of moisture impervious packaging units and package for absorbent articles comprising moisture-sensitive additives
DE102004020076A1 (en) * 2004-04-24 2005-11-17 Bayerische Motoren Werke Ag Tubeless vehicle tire has an inner airtight layer of composite thermoplastic film forming part of the tire inner walls
WO2019020275A1 (en) * 2017-07-26 2019-01-31 Bischof + Klein Se & Co. Kg Packaging container and film production
KR20200028404A (en) * 2017-07-26 2020-03-16 비스쵸프 ＋ 클라인 에스이 ＆ 코. 카게 Packaging container and film production
CN111032528A (en) * 2017-07-26 2020-04-17 比朔夫+霍莱恩欧洲股份及合伙两合公司 Packaging container and film manufacture
RU2768681C2 (en) * 2017-07-26 2022-03-24 Бишоф + Кляйн Се Унд Ко. Кг Packaging container and film for its manufacture
US11702263B2 (en) 2017-07-26 2023-07-18 Bischof + Klein Se & Co. Kg Packaging container and film production
KR102633982B1 (en) * 2017-07-26 2024-02-05 비스쵸프 ＋ 클라인 에스이 ＆ 코. 카게 Packaging container and film manufacturing

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