EP0944683A1 - Plastic separating layer - Google Patents

Plastic separating layer

Info

Publication number
EP0944683A1
EP0944683A1 EP98955423A EP98955423A EP0944683A1 EP 0944683 A1 EP0944683 A1 EP 0944683A1 EP 98955423 A EP98955423 A EP 98955423A EP 98955423 A EP98955423 A EP 98955423A EP 0944683 A1 EP0944683 A1 EP 0944683A1
Authority
EP
European Patent Office
Prior art keywords
plastic
plastic layer
layer according
layer
release
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.)
Ceased
Application number
EP98955423A
Other languages
German (de)
French (fr)
Inventor
Günter WALTHER
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.)
Loparex Grundstuecksverwaltungs GmbH
Original Assignee
4P Folie Forchheim 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 4P Folie Forchheim GmbH filed Critical 4P Folie Forchheim GmbH
Publication of EP0944683A1 publication Critical patent/EP0944683A1/en
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/005—Presence of polyolefin in the release coating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2483/00—Presence of polysiloxane
    • C09J2483/005—Presence of polysiloxane in the release 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/259—Silicic 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
    • 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]
    • Y10T428/31652—Of asbestos
    • Y10T428/31663—As siloxane, silicone or silane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers

Definitions

  • the invention relates to a plastic layer which has release properties with respect to adhesives or adhesive materials.
  • Such layers usually consist of silicone and are applied in a separate operation to a plastic film or the like.
  • the object of the invention is to provide these release properties during manufacture.
  • This object is achieved in that the materials producing the release properties are arranged within the plastic layer and can be extruded with it.
  • Base polymer is provided with modified properties, whereby the release properties are achieved.
  • this can already be provided in the base polymer.
  • a further advantageous embodiment of the invention is that the separation additive has been incorporated on the basis of silicone compounds.
  • the degree of non-stick properties can also be controlled very easily with this incorporation.
  • polyolefin-like substances are incorporated as separation additives.
  • Another advantageous embodiment is that the separation additives are firmly embedded in the plastic matrix.
  • a further advantageous embodiment of the invention is that fillers are provided as separation additives, which are constructed, for example, as inorganic compounds.
  • fillers are provided as separation additives, which are constructed, for example, as inorganic compounds.
  • the masterbatch can contain a constant proportion of the separation additives; The final proportion of the non-stick material is then set by the mixing ratio of plastic to masterbatch.
  • the plastic layer according to the invention can be used as a single-layer material. This single-layer material can be extruded onto a base layer.
  • a plastic film or a paper web can be provided as the base layer.
  • the layer it is also possible for the layer to be produced using the coextrusion process.
  • a carrier layer can be provided with release properties on one side as well as on both sides with the plastic layer.
  • the plastic layer has a layer thickness in the range of 5 ⁇ m.
  • the release properties can be influenced even further if, according to a further embodiment of the invention, the plastic layer or the film carrying it is embossed.
  • a plastic film is produced together with a plastic layer with release properties in a coextrusion process.
  • the side of the plastic film facing away from the plastic layer can be coated with an adhesive and then the film can be wound up, the release properties of the plastic layer preventing the adhesive from adhering firmly to this layer.
  • the release properties of the plastic layer can be achieved in different ways. So it is possible that already
  • Base polymer is provided with modified properties. However, it is also possible to incorporate release additives based on silicone compounds. Furthermore, it is possible that polyolefin-like substances are incorporated as separation additives.
  • the separating additives can be polymerized into the plastic or firmly embedded in the plastic matrix.
  • fillers as release additives which e.g. are constructed as inorganic compounds.
  • the masterbatch can have a constant proportion of release components and the final proportion is set by adding plastic.
  • the coextrusion process has proven particularly useful for production itself, with the release layer being able to be provided on one or both sides.
  • release layer it is also possible to apply the release layer to a carrier web in the extrusion process, it being possible to use both a plastic film and a paper web as the carrier web.
  • the thickness of the plastic layer is chosen according to the respective requirements; a thickness of approximately 5 ⁇ m has been found to be particularly advantageous.
  • the release layer or if the entire layer is applied to a carrier film, can be embossed in order to influence the non-stick properties even further.

Abstract

The invention relates to a plastic layer which has release properties in relation to adhesives. The materials responsible for producing the release properties are located inside the plastic layer and can be extruded with the same.

Description

Beschreibung description
KUNSTSTOFF-TRENNSCHICHTPLASTIC SEPARATING LAYER
Die Erfindung bezieht sich auf eine Kunststoff-Schicht, die Release-Eigenschaften gegenüber Klebstoffen bzw. klebenden Materialien aufweist.The invention relates to a plastic layer which has release properties with respect to adhesives or adhesive materials.
Derartige Schichten bestehen meist aus Silikon und werden in einem separaten Arbeitsgang auf eine Kunststoff-Folie oder dergleichen aufgebracht.Such layers usually consist of silicone and are applied in a separate operation to a plastic film or the like.
Der Erfindung liegt die Aufgabe zugrunde, diese Release-Eigenschaften bereits bei der Herstellung vorzusehen.The object of the invention is to provide these release properties during manufacture.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die die Release- Eigenschaften erzeugenden Materialien innerhalb der Kunststoff-Schicht angeordnet und mit dieser extrudierbar sind.This object is achieved in that the materials producing the release properties are arranged within the plastic layer and can be extruded with it.
Damit ist nicht nur die Herstellung ganz erheblich erleichert, sondern auch der Grad der Antihaft-Eigenschaften leicht einstellbar. Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, daß dasThis not only makes production much easier, it also makes it easy to set the level of non-stick properties. According to an advantageous embodiment of the invention, it is provided that
Basispolymer mit modifizierten Eigenschaften versehen ist, wodurch die Release- Eigenschaften erreicht werden.Base polymer is provided with modified properties, whereby the release properties are achieved.
Je nach der gewünschten Stärke der Release-Eigenschaften kann dies im Basispolymer bereits vorgesehen werden.Depending on the desired strength of the release properties, this can already be provided in the base polymer.
Eine weitere vorteilhafte Ausgestaltung der Erfindung liegt darin, daß die Einarbeitung des Trennadditives auf Basis von Silikonverbindungen erfolgt ist.A further advantageous embodiment of the invention is that the separation additive has been incorporated on the basis of silicone compounds.
Auch mit dieser Einarbeitung läßt sich der Grad der Antihaft-Eigenschaften sehr leicht steuern.The degree of non-stick properties can also be controlled very easily with this incorporation.
Sehr vorteilhaft ist es auch, wenn gemäß einer weiteren Ausgestaltung der Erfindung polyolefinähnliche Substanzen als Trennadditive eingearbeitet sind.It is also very advantageous if, according to a further embodiment of the invention, polyolefin-like substances are incorporated as separation additives.
Bei allen diesen Ausgestaltungen ist erreicht, daß die Materialien, mit denen die Antihaft-Eigenschaften erzielt werden, nicht oder nur unwesentlich in den Klebstoff einwandern.In all of these configurations it is achieved that the materials with which the non-stick properties are achieved do not migrate into the adhesive, or only insignificantly.
Als sehr vorteilhaft hat es sich auch erwiesen, wenn die Trennadditive in den Kunststoff einpolymerisiert sind.It has also proven to be very advantageous if the release additives are polymerized into the plastic.
Eine andere vorteilhafte Ausgestaltung besteht darin, daß die Trennadditive fest in die Kunststoffmatrix eingebettet sind.Another advantageous embodiment is that the separation additives are firmly embedded in the plastic matrix.
Eine weitere vorteilhafte Ausgestaltung der Erfindung liegt darin, daß als Trennadditive Füllstoffe vorgesehen sind, die z.B. als anorganische Verbindungen aufgebaut sind. Zum Herstellen der Kunststoff-Schicht hat es sich als besonders vorteilhaft erwiesen, wenn die Schicht aus einem Masterbatch hergestellt ist.A further advantageous embodiment of the invention is that fillers are provided as separation additives, which are constructed, for example, as inorganic compounds. To produce the plastic layer, it has proven to be particularly advantageous if the layer is produced from a master batch.
Das Masterbatch kann dabei einen konstanten Anteil der Trennadditive enthalten; durch das Mischungsverhältnis Kunststoff zu Masterbatch wird dann der endgültige Anteil des Antihaft-Materials eingestellt.The masterbatch can contain a constant proportion of the separation additives; The final proportion of the non-stick material is then set by the mixing ratio of plastic to masterbatch.
Die erfindungsgemäße Kunststoff-Schicht kann als Einschichtmaterial zum Einsatz kommen. Dieses Einschichtmaterial kann auf ein Tragschicht aufextrudiert werden.The plastic layer according to the invention can be used as a single-layer material. This single-layer material can be extruded onto a base layer.
Als Tragschicht kann beispielsweise eine Kunststofffolie oder eine papierbahn vorgesehen sein.For example, a plastic film or a paper web can be provided as the base layer.
Es ist jedoch gemäß einer weiteren Ausgestaltung der Erfindung auch möglich, daß die Schicht im Koextrusionsverfahren erzeugt ist. Dabei kann eine Trägerschicht sowohl einseitig als auch beidseitig mit der Kunststoff-Schicht mit Release-Eigenschaften versehen sein.However, according to a further embodiment of the invention, it is also possible for the layer to be produced using the coextrusion process. A carrier layer can be provided with release properties on one side as well as on both sides with the plastic layer.
Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, daß die Kunststoff-Schicht eine Schichtdicke im Bereich von 5 μm aufweist.According to a further advantageous embodiment of the invention, it is provided that the plastic layer has a layer thickness in the range of 5 μm.
Die Release-Eigenschaften lassen sich noch weiter beeinflussen, wenn gemäß einer weiteren Ausgestaltung der Erfindung die Kunststoff-Schicht bzw. die diese tragende Folie geprägt ist.The release properties can be influenced even further if, according to a further embodiment of the invention, the plastic layer or the film carrying it is embossed.
Bei einem bevorzugten Ausführungsbeispiel ist eine Kunststoffolie zusammen mit einer Kunststoff-Schicht mit Release-Eigenschaften im Koextrusionsverfahren hergestellt. Die von der Kunststoff-Schicht abgewandte Seite der Kunststoffolie kann mit einem Kleber beschichtet und dann die Folie aufgewickelt werden, wobei die Release-Eigenschaften der Kunststoff-Schicht ein festes Anhaften des Klebers an dieser Schicht verhindert. Die Release-Eigenschaften der Kunststoff-Schicht können auf verschiedenem Weg erreicht werden. So ist es möglich, daß bereits dasIn a preferred embodiment, a plastic film is produced together with a plastic layer with release properties in a coextrusion process. The side of the plastic film facing away from the plastic layer can be coated with an adhesive and then the film can be wound up, the release properties of the plastic layer preventing the adhesive from adhering firmly to this layer. The release properties of the plastic layer can can be achieved in different ways. So it is possible that already
Basispolymer mit modifizierten Eigenschaften versehen ist. Es ist aber auch möglich, daß Trennadditive auf Basis von Silikonverbindungen eingearbeitet sind. Des weiteren ist es möglich, daß polyolefmähnliche Substanzen als Trennadditive eingearbeitet sind.Base polymer is provided with modified properties. However, it is also possible to incorporate release additives based on silicone compounds. Furthermore, it is possible that polyolefin-like substances are incorporated as separation additives.
Die Trennadditive können in den Kunststoff einpolymerisiert oder fest in die Kunststoffmatrix eingebettet sein.The separating additives can be polymerized into the plastic or firmly embedded in the plastic matrix.
Darüber hinaus ist es möglich, als Trennadditive Füllstoffe vorzusehen, die z.B. als anorganische Verbindungen aufgebaut sind.In addition, it is possible to provide fillers as release additives which e.g. are constructed as inorganic compounds.
Für die Herstellung der Release-Schicht hat es sich als vorteilhaft erwiesen, wenn diese aus einem Masterbatch hergestellt ist. Das Masterbatch kann dabei einen konstanten Anteil Release-Bestandteile aufweisen und der endgültige Anteil wird durch die Zugabe von Kunststoff eingestellt.For the production of the release layer, it has proven to be advantageous if it is produced from a master batch. The masterbatch can have a constant proportion of release components and the final proportion is set by adding plastic.
Für die Herstellung selbst hat sich das Koextrusionsverfahren besonders bewährt, wobei die Release-Schicht ein- oder beidseitig vorgesehen werden kann.The coextrusion process has proven particularly useful for production itself, with the release layer being able to be provided on one or both sides.
Es ist aber auch möglich, die Release-Schicht im Extrusionsverfahren auf eine Trägerbahn aufzubringen, wobei als Trägerbahn sowohl eine Kunststoff-Folie als auch eine Papierbahn eingesetzt werden kann.However, it is also possible to apply the release layer to a carrier web in the extrusion process, it being possible to use both a plastic film and a paper web as the carrier web.
Die Dicke der Kunststoff-Schicht wird entsprechend den jeweiligen Erfordernissen gewählt; als besonders vorteilhaft hat sich eine Dicke von etwa 5 μm ergeben.The thickness of the plastic layer is chosen according to the respective requirements; a thickness of approximately 5 μm has been found to be particularly advantageous.
Zusätzlich kann die Release-Schicht, bzw. wenn sie auf einer Trägerfolie aufgebracht ist, der ganze Verbund, geprägt werden, um die Antihafteigenschaften noch weiter zu beeinflussen. In addition, the release layer, or if the entire layer is applied to a carrier film, can be embossed in order to influence the non-stick properties even further.

Claims

Patentansprüche Claims
1. Kunststoff-Schicht, die Release-Eigenschaften gegenüber Klebstoffen aufweist, dadurch gekennzeichnet, daß die die Release-Eigenschaften erzeugenden Materialien innerhalb der Kunststoff-Schicht angeordnet und mit dieser extrudierbar sind.1. Plastic layer which has release properties compared to adhesives, characterized in that the materials producing the release properties are arranged within the plastic layer and can be extruded with this.
2. Kunststoff-Schicht nach Anspruch 1, dadurch gekennzeichnet, daß das Basispolymer mit modifizierten Eigenschaften versehen ist, wodurch die Release-Eigenschaften erreicht werden.2. Plastic layer according to claim 1, characterized in that the base polymer is provided with modified properties, whereby the release properties are achieved.
3. Kunststoff-Schicht nach Anspruch 1, dadurch gekennzeichnet, daß die Einarbeitung des Trennadditives auf Basis von Silikonverbindungen erfolgt ist.3. Plastic layer according to claim 1, characterized in that the incorporation of the release additive has been carried out on the basis of silicone compounds.
4. Kunststoff-Schicht nach Anspruch 1, dadurch gekennzeichnet, daß polyolefmähnliche Substanzen als Trennadditive eingearbeitet sind.4. Plastic layer according to claim 1, characterized in that polyolefin-like substances are incorporated as separation additives.
5. Kunstsoffschicht nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Trennadditive in den Kunststoff einpolymerisiert sind. 5. Plastic layer according to one of the preceding claims, characterized in that the release additives are polymerized into the plastic.
6. Kunststoff-Schicht nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Trennadditive fest in die Kunststoffmatrix eingebettet sind.6. Plastic layer according to one of claims 1 to 4, characterized in that the separating additives are firmly embedded in the plastic matrix.
7. Kunststoff-Schicht nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß als Trennadditive Füllstoffe vorgesehen sind, die z.B. als anorganische Verbindungen aufgebaut sind.7. Plastic layer according to one of the preceding claims, characterized in that fillers are provided as separation additives, e.g. are constructed as inorganic compounds.
8. Kunststoff-Schicht nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schicht aus einem Masterbatch hergestellt ist.8. Plastic layer according to one of the preceding claims, characterized in that the layer is made from a master batch.
9. Kunststoff-Schicht nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schicht im Koextrusionsverfahren erzeugt ist.9. Plastic layer according to one of the preceding claims, characterized in that the layer is produced in the coextrusion process.
10. Kunststoff-Schicht nach Anspruch 9, dadurch gekennzeichnet, daß die Schicht zusammen mit einer Tragschicht aus Kunststoff extrudiert ist.10. Plastic layer according to claim 9, characterized in that the layer is extruded together with a base layer made of plastic.
11. Kunststoff-Schicht nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Schicht auf eine Trägerbahn, beispielsweise eine Papierbahn aufextrudiert ist.11. Plastic layer according to one of claims 1 to 8, characterized in that the layer is extruded onto a carrier web, for example a paper web.
12. Kunststoff-Schicht nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schicht auf einer oder beiden Seiten einer Tragschicht angeordnet ist.12. Plastic layer according to one of the preceding claims, characterized in that the layer is arranged on one or both sides of a base layer.
13. Kunststoff-Schicht nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Schichtdicke im Bereich von 5 μm vorgesehen ist.13. Plastic layer according to one of the preceding claims, characterized in that a layer thickness in the range of 5 microns is provided.
14. Kunststoff-Schicht nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die die Release-Eigenschaften aufweisende Kunststoff- Schicht bzw. die diese tragende Folie geprägt ist. 14. Plastic layer according to one of the preceding claims, characterized in that the plastic layer having the release properties or the foil carrying this is embossed.
EP98955423A 1997-10-16 1998-10-09 Plastic separating layer Ceased EP0944683A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19745624A DE19745624A1 (en) 1997-10-16 1997-10-16 Plastic layer with non-stick properties, used e.g. on reverse side of adhesive tape wound on roll
DE19745624 1997-10-16
PCT/EP1998/006424 WO1999020707A1 (en) 1997-10-16 1998-10-09 Plastic separating layer

Publications (1)

Publication Number Publication Date
EP0944683A1 true EP0944683A1 (en) 1999-09-29

Family

ID=7845655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98955423A Ceased EP0944683A1 (en) 1997-10-16 1998-10-09 Plastic separating layer

Country Status (8)

Country Link
US (1) US6875502B2 (en)
EP (1) EP0944683A1 (en)
JP (1) JP2002513444A (en)
KR (1) KR100632479B1 (en)
AU (1) AU1227099A (en)
CA (1) CA2275161A1 (en)
DE (1) DE19745624A1 (en)
WO (1) WO1999020707A1 (en)

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US6875502B2 (en) 2005-04-05
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US20010055675A1 (en) 2001-12-27
AU1227099A (en) 1999-05-10
JP2002513444A (en) 2002-05-08
DE19745624A1 (en) 1999-04-22
WO1999020707A1 (en) 1999-04-29

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