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EP0669605A1 - Flexible rubber/synthetic resin-bonded permanent magnetic foil and method of manufacturing it - Google Patents

Flexible rubber/synthetic resin-bonded permanent magnetic foil and method of manufacturing it Download PDF

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Publication number
EP0669605A1
EP0669605A1 EP95102532A EP95102532A EP0669605A1 EP 0669605 A1 EP0669605 A1 EP 0669605A1 EP 95102532 A EP95102532 A EP 95102532A EP 95102532 A EP95102532 A EP 95102532A EP 0669605 A1 EP0669605 A1 EP 0669605A1
Authority
EP
European Patent Office
Prior art keywords
synthetic resin
permanent magnetic
bonded
rubber
copolymer
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.)
Granted
Application number
EP95102532A
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German (de)
French (fr)
Other versions
EP0669605B1 (en
Inventor
Detlef Haas
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.)
Haas & Co Magnettechnik GmbH
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Haas & Co Magnettechnik 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.)
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Publication date
Application filed by Haas & Co Magnettechnik GmbH filed Critical Haas & Co Magnettechnik GmbH
Publication of EP0669605A1 publication Critical patent/EP0669605A1/en
Application granted granted Critical
Publication of EP0669605B1 publication Critical patent/EP0669605B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
    • G09F7/02—Signs, plates, panels or boards using readily-detachable elements bearing or forming symbols
    • G09F7/04—Signs, plates, panels or boards using readily-detachable elements bearing or forming symbols the elements being secured or adapted to be secured by magnetic means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • H01F1/113—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles in a bonding agent
    • H01F1/117—Flexible bodies

Definitions

  • the invention relates to a rubber or synthetic resin-bonded, flexible permanent magnet film which is provided on one or both sides with a layer.
  • the invention further relates to a method for producing such a film.
  • Permanent magnetic foils of this type are known. They generally consist of a rubber-bonded or synthetic resin-bonded, powdered permanent magnet material based on oxide, foils of different thicknesses depending on the size of the further processing being in tape or plate form and magnetized using a special magnetization process. Plastic layers or color layers were generally used here, for example for a corresponding print.
  • the previously known permanent magnetic films have the disadvantage that they do not withstand larger temperature differences in particular. It has been shown that, for example, permanent magnetic foils used as signs, if they are attached to motor vehicles or outdoors on ferromagnetic boards, are damaged in sunlight and in the event of greater heating in that the plastic layer, in particular the lacquer layer, dissolves. Particularly in the case of motor vehicles, it was observed that the layers of the permanent magnetic film on the paint on the motor vehicle body left clear traces which can no longer be eliminated.
  • DE-U-69 28 773 it has already been proposed to apply a thin layer of a water-repellent or waterproof, temperature-resistant material to a magnetically adhesive plate on the adhesive surface.
  • This material consists of a silicone-containing material, for example a silicone lacquer, a silicone wax or the like.
  • Paper, plastics, textile materials or the like can then be applied to the side of the soft magnetic material. Furthermore, an adhesive can be provided on the back, which is covered with a silicone paper.
  • the present invention is based on the object of creating a rubber or synthetic resin-bonded, flexible permanent magnet film which does not have the disadvantages mentioned above and which retains excellent stability and stability in naturally occurring temperature ranges.
  • a rubber or synthetic resin-bonded, flexible permanent magnetic film in tape or plate form with one or both sides of the coating is proposed, which is characterized in that the layer consists of a fluoroethylene-vinyl ether copolymer (as a "Teflon” registered trademark) .
  • the permanent magnetic film according to the invention has the essential advantage that it is extremely robust and has excellent strength.
  • the surface can also be printed with suitable colors.
  • Teflon generally consists of a fluoroethylene vinyl ether copolymer in a thin coating.
  • This copolymer is made from thermosetting fluorine plastics, which are formed from fluoroethylene and vinyl ether.
  • This copolymer can be dissolved by a solvent, and a "crosslinking reaction” occurs at room or lower temperatures when mixed with the hardening agent, from which a stable coating later develops.
  • the copolymer can be dissolved by solvents, it can be spread on the surface in a specified thickness. It is also possible to spread the copolymer on uneven surfaces. It has been shown that the magnetic sheet does not become attached or blocked or stains on the surface during long storage and holding.
  • the copolymer can be applied by brushing, rolling, spraying, knife coating or the like onto the surface of the permanent magnet film, the copolymer consisting of a fluoroethylene vinyl ether which is mixed with a curing agent and with a solvent. After it is applied to the surface of a plastic-bonded magnetic film, it hardens. It has been shown that there is no influence on the surface of the magnetic film or the surface of the support.
  • a layer 2 of Teflon is applied to a flexible, synthetic resin-bonded permanent magnet film 1.
  • the layer can be applied to the film on one or both sides.
  • the copolymer can be applied by brushing, rolling, spraying, knife coating or the like onto the surface of the plastic-bonded magnetic film, the copolymer consisting of fluoroethylene-vinyl ether which is mixed with hardening agents and solvents. After the copolymer has been spread on, the curing process is started by volatilization of the solvent and the action of the curing agent, so that it adheres firmly to the magnetic film in the applied layer.
  • the layer can also be provided with a removable protective plastic layer which is removed before the film is used.
  • the film has the essential advantage that it is largely protected by the Teflon layer on the one hand and on the other hand the Teflon layer itself prevents the film from affecting the documents.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Laminated Bodies (AREA)
  • Magnetic Treatment Devices (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A rubber or resin-bonded flexible permanent magnetic foil has, on one or both sides, a coating of a fluoroethylene-vinyl ether copolymer ('Teflon', RTM). Prodn. of the above foil involves (a) mixing the copolymer with a hardener and a solvent; (b) applying the mixt. to the foil surface by means of an applicator roll, brush or the like; and (c) hardening.

Description

Die Erfindung betrifft eine gummi- oder kunstharzgebundene, flexible Dauermagnetfolie, die ein-oder beidseitig mit einer Schicht versehen ist. Die Erfindung betrifft ferner ein Verfahren zur Herstellung einer derartigen Folie.The invention relates to a rubber or synthetic resin-bonded, flexible permanent magnet film which is provided on one or both sides with a layer. The invention further relates to a method for producing such a film.

Derartige Dauermagnetfolien sind bekannt. Sie bestehen im allgemeinen aus einem gummi- oder kunstharzgebundenen, pulverisierten Dauermagnetmaterial auf Oxidbasis, wobei Folien von unterschiedlicher Dicke entsprechend der Größe der Weiterverarbeitung in Band- oder Plattenform vorliegen und mit einem besonderen Magnetisierungsverfahren magnetisiert sind. Hierbei wurden im allgemeinen Kunststoffschichten oder Farbschichten, beispielsweise für einen entsprechenden Aufdruck, verwendet.Permanent magnetic foils of this type are known. They generally consist of a rubber-bonded or synthetic resin-bonded, powdered permanent magnet material based on oxide, foils of different thicknesses depending on the size of the further processing being in tape or plate form and magnetized using a special magnetization process. Plastic layers or color layers were generally used here, for example for a corresponding print.

Die bisher bekannten Dauermagnetfolien weisen jedoch den Nachteil auf, daß sie insbesondere größeren Temperaturunterschieden nicht standhalten. So hat es sich gezeigt, daß beispielsweise als Schilder verwendete Dauermagnetfolien, wenn sie an Kraftfahrzeugen oder im Freien an ferromagnetischen Tafeln angebracht sind, bei Sonneneinstrahlung und bei größerer Erwärmung dadurch beschädigt werden, daß die Kunststoffschicht, insbesondere die Lackschicht, sich auflöst. Vor allem bei Kraftfahrzeugen wurde beobachtet, daß die Schichten der Dauermagnetfolie am Lack der Kraftfahrzeugkarosserie deutliche und nicht mehr beseitigbare Spuren hinterließen.However, the previously known permanent magnetic films have the disadvantage that they do not withstand larger temperature differences in particular. It has been shown that, for example, permanent magnetic foils used as signs, if they are attached to motor vehicles or outdoors on ferromagnetic boards, are damaged in sunlight and in the event of greater heating in that the plastic layer, in particular the lacquer layer, dissolves. Particularly in the case of motor vehicles, it was observed that the layers of the permanent magnetic film on the paint on the motor vehicle body left clear traces which can no longer be eliminated.

In der DE-U-69 28 773 wurde bereits vorgeschlagen, bei einer magnetisch haftenden Platte auf der Haftfläche eine dünne Schicht aus einem wasserabstoßenden oder wasserdichten, temperaturfesten Werkstoff aufzubringen. Dieser Werkstoff besteht dabei aus einem silikonhaltigen Werkstoff, beispielsweise einem Silikonlack, einem Silikonwachs od. dgl.In DE-U-69 28 773 it has already been proposed to apply a thin layer of a water-repellent or waterproof, temperature-resistant material to a magnetically adhesive plate on the adhesive surface. This material consists of a silicone-containing material, for example a silicone lacquer, a silicone wax or the like.

In der DE-U-69 34 001 wurde vorgeschlagen, bei einem Flächenmagneten in Form dünner Platten oder Bänder auf einer dünnen Folie aus einem weichmagnetischen Material durch Aufrakeln, Siebdrucken oder Aufsprühen eine dünne Schicht aus einem in einem kunststoffdispergierten Dauermagnetwerkstoff aufzubringen.In DE-U-69 34 001 it was proposed to apply a thin layer made of a plastic magnet-dispersed permanent magnet to a surface magnet in the form of thin plates or strips on a thin foil made of a soft magnetic material by knife coating, screen printing or spraying.

Auf der Seite des weichmagnetischen Materials können dann Papier, Kunststoffe, Textilstoffe od. dgl. aufgebracht werden. Ferner kann an der Rückseite ein Kleber vorgesehen sein, der mit einem Silikonpapier abgedeckt ist.Paper, plastics, textile materials or the like can then be applied to the side of the soft magnetic material. Furthermore, an adhesive can be provided on the back, which is covered with a silicone paper.

Es hat sich jedoch gezeigt, daß die Verwendung von Silikonmaterial vielfach nicht ausreicht, um die Resistenz der Dauermagnetfolie gegen Witterungseinflüsse und größere Temperaturunterschiede zu erhöhen.However, it has been shown that the use of silicone material is often not sufficient to increase the resistance of the permanent magnet film to weather influences and larger temperature differences.

Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, eine gummi- oder kunstharzgebundene, flexible Dauermagnetfolie zu schaffen, die die oben genannten Nachteile nicht aufweist und die bei natürlich vorkommenden Temperaturbereichen eine ausgezeichnete Stabilität und Standfestigkeit behält.The present invention is based on the object of creating a rubber or synthetic resin-bonded, flexible permanent magnet film which does not have the disadvantages mentioned above and which retains excellent stability and stability in naturally occurring temperature ranges.

Zur Lösung der gestellten Aufgabe wird eine gummi- oder kunstharzgebundene, flexible Dauermagnetfolie in Band- oder Plattenform mit ein- oder beidseitiger Beschichtung vorgeschlagen, die dadurch gekennzeichnet ist, daß die Schicht aus einem Fluoroethlene-Vinylether Copolymer (als "Teflon" eingetragenes Warenzeichen) besteht.To solve the problem, a rubber or synthetic resin-bonded, flexible permanent magnetic film in tape or plate form with one or both sides of the coating is proposed, which is characterized in that the layer consists of a fluoroethylene-vinyl ether copolymer (as a "Teflon" registered trademark) .

Es hat sich gezeigt, daß eine derartige Schicht größeren Hitzeeinflüssen standhält und daß Beschädigungen am Lack der Auflage der Dauermagnetfolie nicht mehr auftreten.It has been shown that such a layer withstands greater heat influences and that damage to the coating of the permanent magnet film no longer occurs.

Außerdem weist die Dauermagnetfolie gemäß der Erfindung den wesentlichen Vorteil auf, daß sie äußerst robust ist und eine ausgezeichnete Festigkeit aufweist. Ferner kann auch die Oberfläche mit geeigneten Farben bedruckt werden.In addition, the permanent magnetic film according to the invention has the essential advantage that it is extremely robust and has excellent strength. The surface can also be printed with suitable colors.

Das unter dem Warenzeichen "Teflon" bekanntgewordene Material besteht im allgemeinen aus einem Fluoroethlene-Vinylether Copolymer in dünner Beschichtung. Dieses Copolymer ist aus duroplastischen Fluorin-Kunststoffen hergestellt, die aus Fluorethlene und Vinylether gebildet werden. Dieses Copolymer kann durch ein Lösungsmittel gelöst werden, und es entsteht unter Raum- oder niederigeren Temperaturen beim Mischen mit dem Härtungsmittel eine "crosslinking-Reaktion", woraus sich später eine stabile Beschichtung entwikkelt.The material known under the trademark "Teflon" generally consists of a fluoroethylene vinyl ether copolymer in a thin coating. This copolymer is made from thermosetting fluorine plastics, which are formed from fluoroethylene and vinyl ether. This copolymer can be dissolved by a solvent, and a "crosslinking reaction" occurs at room or lower temperatures when mixed with the hardening agent, from which a stable coating later develops.

Da das Copolymer durch Lösungsmittel gelöst werden kann, kann es in einer spezifizierten Stärke auf die Oberfläche aufgestrichen werden. Außerdem ist es möglich, das Copolymer auf unebene Flächen aufzustreichen. Es hat sich gezeigt, daß ein Festlegen oder Blockieren der Magnetfolie oder Flecken auf der Oberfläche während langer Lagerung und Halterung nicht auftreten.Since the copolymer can be dissolved by solvents, it can be spread on the surface in a specified thickness. It is also possible to spread the copolymer on uneven surfaces. It has been shown that the magnetic sheet does not become attached or blocked or stains on the surface during long storage and holding.

Das Copoylmer kann durch Aufstreichen, Aufwalzen, Aufsprühen, Aufrakeln od. dgl. auf die Oberfläche der Dauermagnetfolie aufgebracht werden, wobei das Copolymer aus einem Fluoroethlene-Vinylether besteht, das mit einem Härtungsmittel und mit einem Lösungsmittel gemischt ist. Nachdem es auf die Oberfläche einer kunststoffgebundenen Magnetfolie aufgebracht ist, erhärtet es. Dabei hat es sich gezeigt, daß weder eine Beeinflussung der Oberfläche der Magnetfolie noch der Oberfläche der Auflage stattfindet.The copolymer can be applied by brushing, rolling, spraying, knife coating or the like onto the surface of the permanent magnet film, the copolymer consisting of a fluoroethylene vinyl ether which is mixed with a curing agent and with a solvent. After it is applied to the surface of a plastic-bonded magnetic film, it hardens. It has been shown that there is no influence on the surface of the magnetic film or the surface of the support.

Anhand der Zeichnung soll am Beispiel einer bevorzugten Ausführungsform die Dauermagnetfolie gemäß der Erfindung näher erläutert werden.The permanent magnet film according to the invention will be explained in more detail using the example of a preferred embodiment.

In der Zeichnung zeigen

  • Fig. 1 eine Draufsicht und
  • Fig. 2 einen Längsschnitt durch eine rechteckförmige Dauermagnetfolie.
Show in the drawing
  • Fig. 1 is a plan view and
  • Fig. 2 shows a longitudinal section through a rectangular permanent magnet film.

Wie sich aus der Zeichnung ergibt, ist auf einer flexiblen, kunstharzgebundenen Dauermagnetfolie 1 eine Schicht 2 aus Teflon aufgebracht. Die Schicht kann ein- oder beidseitig auf der Folie aufgebracht sein.As can be seen from the drawing, a layer 2 of Teflon is applied to a flexible, synthetic resin-bonded permanent magnet film 1. The layer can be applied to the film on one or both sides.

Das Aufbringen des Copolymers kann durch Aufstreichen, Aufwalzen, Aufsprühen, Aufrakeln od. dgl. auf die Oberfläche der kunststoffgebundenen Magnetfolie erfolgen, wobei das Copolymer aus Fluoroethlene-Vinylether besteht, das mit Härtungsmitteln und Lösungsmitteln gemischt ist. Nach dem Aufstreichen des Copolymers wird der Härtungsvorgang durch Verflüchtigung des Lösungsmittels und der Wirkung des Härtungsmittels in Gang gesetzt, so daß es in der aufgebrachten Schicht fest auf der Magnetfolie haftet.The copolymer can be applied by brushing, rolling, spraying, knife coating or the like onto the surface of the plastic-bonded magnetic film, the copolymer consisting of fluoroethylene-vinyl ether which is mixed with hardening agents and solvents. After the copolymer has been spread on, the curing process is started by volatilization of the solvent and the action of the curing agent, so that it adheres firmly to the magnetic film in the applied layer.

Selbstverständlich kann die Schicht auch noch mit einer abziehbaren Kunststoffschutzschicht versehen werden, die vor Anwendung der Folie abgezogen wird. Die Folie weist den wesentlichen Vorteil auf, daß sie einerseits durch die Teflonschicht weitgehend geschützt ist und andererseits die Teflonschicht selbst verhindert, daß Beeinträchtigungen von der Folie auf die Unterlagen erfolgen.Of course, the layer can also be provided with a removable protective plastic layer which is removed before the film is used. The film has the essential advantage that it is largely protected by the Teflon layer on the one hand and on the other hand the Teflon layer itself prevents the film from affecting the documents.

Claims (2)

1. Gummi- oder kunstharzgebundene, flexible Dauermagnetfolie in Band- oder Plattenform mit ein- oder beidseitiger Beschichtung, dadurch gekennzeichnet, daß die Schicht aus einem Fluoroethlene-Vinylether Copolymer (als "Teflon" eingetragenes Warenzeichen) besteht.1. Rubber or synthetic resin-bonded, flexible permanent magnetic film in tape or plate form with one- or both-sided coating, characterized in that the layer consists of a fluoroethylene-vinyl ether copolymer (as a "Teflon" registered trademark). 2. Verfahren zur Herstellung einer gummi- oder kunstharzgebundenen, flexiblen Dauermagnetfolie in Band- oder Plattenform mit ein- oder beidseitiger Beschichtung, dadurch gekennzeichnet, daß das Fluoroethlene-Vinylether Copolymer mit einem Härtungsmittel und einem Lösungsmittel gemischt wird, welches auf die Oberfläche einer gummi- oder kunstharzgebundenen Magnetfolie durch Aufstreichenen mittels Walzen, Pinsel od. dgl. aufgebracht und anschließend einem Erhärtungsvorgang unterworfen wird.2. A process for the production of a rubber or synthetic resin-bonded, flexible permanent magnetic film in tape or plate form with a coating on one or both sides, characterized in that the fluoroethylene-vinyl ether copolymer is mixed with a curing agent and a solvent which is applied to the surface of a rubber- or synthetic resin-bonded magnetic film is applied by brushing on using rollers, brushes or the like and then subjected to a hardening process.
EP95102532A 1994-02-24 1995-02-22 Flexible rubber/synthetic resin-bonded permanent magnetic foil and method of manufacturing it Expired - Lifetime EP0669605B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9403071U 1994-02-24
DE9403071U DE9403071U1 (en) 1994-02-24 1994-02-24 Rubber or synthetic resin-bonded, flexible permanent magnet foil

Publications (2)

Publication Number Publication Date
EP0669605A1 true EP0669605A1 (en) 1995-08-30
EP0669605B1 EP0669605B1 (en) 1997-07-23

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EP95102532A Expired - Lifetime EP0669605B1 (en) 1994-02-24 1995-02-22 Flexible rubber/synthetic resin-bonded permanent magnetic foil and method of manufacturing it

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EP (1) EP0669605B1 (en)
AT (1) ATE155917T1 (en)
DE (2) DE9403071U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003067614A2 (en) * 2002-02-08 2003-08-14 Magna Paper, Llc. Self-adhesive magnet receptive surface covering

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1204543B (en) * 1962-04-19 1965-11-04 Formeta Fritz Fortenbacher Magnetically adhesive license plate, especially for motor vehicles
DE1221568B (en) * 1963-01-25 1966-07-21 Formeta Fritz Fortenbacher Magnetically adhesive license plate, especially for motor vehicles
BE753673A (en) * 1969-07-21 1970-12-31 Fortenbacher Fritz MAGNETIC ADHESION PLATE, IN PERMANENT MAGNETISM MATERIAL INCORPORATED IN RUBBER OR SYNTHETIC MATERIAL
DE1943914A1 (en) * 1969-08-29 1971-03-25 Hermann Holtz Plane magnets in thin plate or tape form
US5059468A (en) * 1986-03-29 1991-10-22 Canon Kabushiki Kaisha Magnetic recording medium
JPH05146105A (en) * 1991-11-21 1993-06-11 Toshiba Corp Conductor and electrical rotating equipment

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6928773U (en) * 1969-07-18 1969-12-04 Fritz Fortenbacher MAGNETICALLY ADHESIVE PLATE MADE OF RUBBER- OR PLASTIC-BONDED PERMANENT MAGNETIC MATERIAL
DE6934001U (en) * 1969-08-28 1969-12-11 Hermann Holtz AREA MAGNETS IN THE SHAPE OF THIN PLATES OR STRIPS
US3908065A (en) * 1974-04-15 1975-09-23 Minnesota Mining & Mfg Magnetic embossable label tape laminate
JPS57169929A (en) * 1981-04-13 1982-10-19 Tdk Corp Magnetic recording medium and its manufacture
DE9314638U1 (en) * 1993-09-28 1993-12-16 Remus Produktions- und Vertriebsgesellschaft mbH, 70794 Filderstadt Magnetic carrier with at least one magnetic adhesive body

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1204543B (en) * 1962-04-19 1965-11-04 Formeta Fritz Fortenbacher Magnetically adhesive license plate, especially for motor vehicles
DE1221568B (en) * 1963-01-25 1966-07-21 Formeta Fritz Fortenbacher Magnetically adhesive license plate, especially for motor vehicles
BE753673A (en) * 1969-07-21 1970-12-31 Fortenbacher Fritz MAGNETIC ADHESION PLATE, IN PERMANENT MAGNETISM MATERIAL INCORPORATED IN RUBBER OR SYNTHETIC MATERIAL
DE1943914A1 (en) * 1969-08-29 1971-03-25 Hermann Holtz Plane magnets in thin plate or tape form
US5059468A (en) * 1986-03-29 1991-10-22 Canon Kabushiki Kaisha Magnetic recording medium
JPH05146105A (en) * 1991-11-21 1993-06-11 Toshiba Corp Conductor and electrical rotating equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 17, no. 535 (E - 1439) 27 September 1993 (1993-09-27) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003067614A2 (en) * 2002-02-08 2003-08-14 Magna Paper, Llc. Self-adhesive magnet receptive surface covering
WO2003067614A3 (en) * 2002-02-08 2004-04-15 Magna Paper Llc Self-adhesive magnet receptive surface covering

Also Published As

Publication number Publication date
EP0669605B1 (en) 1997-07-23
ATE155917T1 (en) 1997-08-15
DE9403071U1 (en) 1994-05-05
DE59500401D1 (en) 1997-08-28

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