EP1047032A2 - Bandelettes de marquage magnétiques et leurs procédé de fabrication - Google Patents

Bandelettes de marquage magnétiques et leurs procédé de fabrication Download PDF

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Publication number
EP1047032A2
EP1047032A2 EP00108525A EP00108525A EP1047032A2 EP 1047032 A2 EP1047032 A2 EP 1047032A2 EP 00108525 A EP00108525 A EP 00108525A EP 00108525 A EP00108525 A EP 00108525A EP 1047032 A2 EP1047032 A2 EP 1047032A2
Authority
EP
European Patent Office
Prior art keywords
strip
signal
amorphous
ferromagnetic
tape
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
EP00108525A
Other languages
German (de)
English (en)
Other versions
EP1047032B1 (fr
EP1047032A3 (fr
Inventor
Kurt Dr. Emmerich
Giselher Dr. Herzer
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze 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 Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Publication of EP1047032A2 publication Critical patent/EP1047032A2/fr
Publication of EP1047032A3 publication Critical patent/EP1047032A3/fr
Application granted granted Critical
Publication of EP1047032B1 publication Critical patent/EP1047032B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/244—Tag manufacturing, e.g. continuous manufacturing processes
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/2442—Tag materials and material properties thereof, e.g. magnetic material details
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15316—Amorphous metallic alloys, e.g. glassy metals based on Co
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15341—Preparation processes therefor
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1084—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing of continuous or running length bonded web
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1089—Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina
    • Y10T156/1092—All laminae planar and face to face
    • Y10T156/1097—Lamina is running length web

Definitions

  • the invention relates to a magnetic marking strip for Generation of a signal within an interrogation zone in which a periodically changing magnetic field with a predetermined one Basic frequency is present, which is from the marking strip generated signal recorded by a scanner and if a harmonic is found in it higher order of the fundamental frequency produces an advertisement which consists of a signal strip made of ferromagnetic Material with a low coercive force exists the ferromagnetic material is applied, its coercive field strength is significantly larger than that of the material of the Signal strip.
  • Such magnetic marker strips are for example from DE 30 26 482 A1 and from EP 0 121 649 B1 known.
  • Marking strips of the type mentioned are known in which the signal strip is proportional to its width is long and in a first, unmagnetized State as a result of the magnetic field in the harmonic detection area emits signals and in a second state no signal containing harmonics in this magnetic field emits.
  • the one having the larger coercive force ferromagnetic material is there in the form of several Deactivating elements spaced apart on the signal strip arranged.
  • the width of the deactivation elements is essentially equal to the width of the signal strip, the deactivating elements in a first, unmagnetized State the signal strip in the first state and in a second, magnetized state the signal strip in switch the second state.
  • the signal strips described there are typically made of crystalline, highly permeable nickel-iron alloys high nickel content.
  • EP 0 121 649 B1 proposes alloy selections with the lowest possible saturation magnetostriction ⁇ S , which makes the signal independent of the internal and external voltage states of the signal strip.
  • EP 0 121 649 B1 states that that the alloy selections taught there already in State of manufacture, d. H. so immediately after pouring in Rapid solidification technology, have a B-H loop that is rectangular.
  • B-H loop the form of the magnetic hysteresis (B-H loop) of the ferromagnetic material of great importance. Magnetized to insert a metallic object into a magnetic field remains after switching off the magnetic Field a certain magnetization. The lag magnetization of ferromagnetic materials The field strength is a measurable quantity that can be measured with a Curve display can be recorded, generally as a B-H loop referred to as.
  • Magnetic marker strips currently available use signal strips made of amorphous, ferromagnetic alloys in typical widths between 0.7 mm and 2.5 mm in lengths between 30 mm and 90 mm. To deactivate this signal strip applied ferromagnetic material, the Coercive field strength is significantly greater than that of the material of the signal strip. These have higher coercive alloys coercive field strengths between 15 A / cm and 100 A / cm on. These higher coercive stripes tend to be between 3 and 15 mm long and are for reasons of attachability 2 to 4 mm wider than the signal strips. These deactivation elements are used in the manufacturing process cut to length from a feed roll. You will be in usually then attached over adhesive films, which also the continuous signal strip of the magnetic marking strip fix.
  • the deactivation elements as continuous, single, narrow Strip fixed on a broadband of the signal strip and the finished magnetic marker is then cut to length.
  • the advantage of this process is that it reduces costs Use of broadband for the signal strip using a single cutting process per magnetic Marking strips included instead of the multiple process steps Attachment in the conventional, described above Production of magnetic marking strips with signal strips made of amorphous, ferromagnetic alloys.
  • a broadband was produced from an amorphous, ferromagnetic alloy with the composition Co 58 Fe 5 , 5 Ni 13 Si 14 , 5 B 9 using rapid solidification technology in a bandwidth of 54 mm and an average thickness of 25 ⁇ m.
  • the saturation magnetostriction ⁇ S was -0.5 ppm.
  • the cast strip saturation induction B S was 0.7 Tesla.
  • the tape produced also had a rectangular bra loop, with a remanence ratio (synonymous with "squareness”) of approximately 85%.
  • a signal strip was then made from this cast broadband with a width of 2 mm transverse to the longitudinal axis of the cast Broadband cut to length and its harmonics measured.
  • the signal strip with an alternating magnetic field with an amplitude of 1 A / cm and a frequency of 1 kHz excited.
  • the signal strip was parallel to the magnetic field oriented towards the earth, which is a DC field magnetization of about 0.2 A / cm.
  • the through the alternating field caused induction change was in an air-compensated, the pick-up coil surrounding the middle of the signal strip 100 turns measured based on the voltage induced there.
  • the induced voltage was then measured using a spectral analyzer broken down into their frequency components, d. H. it was carried out a harmonic analysis.
  • the object of the present invention is therefore amorphous, Provide ferromagnetic alloys, which over the in DE 30 26 482 A1 taught methods for magnetic marking strips are processable.
  • a magnetic marking strip of the type mentioned at the outset which is characterized in that the signal strip is cut to length from a strip of an amorphous, ductile, almost magnetostriction-free alloy transversely to the longitudinal axis of the strip, the flat bra parallel to its longitudinal axis Loop has.
  • a flat BH loop is understood to mean a hysteresis loop with a ratio of remanence to saturation magnetization B S of ⁇ 20% or B r / B s ⁇ 10%.
  • the amorphous, ferromagnetic alloy strips produced according to the prior art have a rectangular BH loop, but only in the casting direction.
  • this rectangular bra loop in the casting direction is not sufficient for the functionality of the magnetic marking strips produced therefrom in the case of signal strips which are cut transversely to the longitudinal axis of the broadband.
  • the cast strip is heat-treated in such a way that a flat BH loop is present along the casting direction.
  • a flat BH loop in the casting direction of the tape there is a rectangular BH loop in the direction transverse to the casting direction, which then enables the desired cost-effective further processing into a magnetic marking strip.
  • alloys are subjected to heat treatment in the Pass, typically under tension or in a magnetic field transverse to the longitudinal axis of the cast amorphous, ferromagnetic Tape, can be very flat in the casting direction Set the B-H loop.
  • the alloy systems mentioned are also almost magnetostriction-free, have a sufficient Saturation induction and have after Heat treatment and cutting to length across the longitudinal axis of the cast Ties a rectangular B-H loop that is excellent Functionality for the magnetic to be manufactured Marking strips result.
  • the amorphous, ferromagnetic tape is wound into a coil (coil) and the tape coil or several tape coils are subjected to a heat treatment in which a DC magnetic field is simultaneously applied, which is parallel to the winding axis of the tape coil or tapes, that is to say transversely is oriented to the casting direction of the strip ("cross-field treatment").
  • This procedure is shown in FIG. 3 .
  • the throughput speed in the continuous heat treatment is preferred chosen so that the amorphous, ferromagnetic Band for a heat treatment time 2s ⁇ t ⁇ 60s on one Temperature 280 ° C ⁇ T ⁇ 380 ° C is heated.
  • the alloy and the magnetic field heat treatment should preferably be matched to one another.
  • the essential tuning parameter is the Curie temperature T C of the alloy. It has been shown that the magnetic field treatments only lead to signal strips with good harmonic signals if the temperatures T selected there are below the Curie temperature T C or do not significantly exceed them.
  • Alloys with a relatively low metalloid content generally have such Curie temperatures. This can also improve the ductility of the alloys after the heat treatment. On the other hand, however, the lowering of the metalloid content in turn results in an increase in the saturation induction B S , which means a weakening of the harmonic signals for a given geometry of the signal strips. It was found that signal strips with a length of less than 10 cm improved the harmonic signals when the saturation induction B S was reduced. Saturation induction B S ⁇ 0.7 Tesla has proven to be particularly suitable.
  • the preferred alloys have been found to be those whose composition is selected such that the saturation induction B S 0 0.7 Tesla and at the same time the Curie temperature T C 200 200 ° C. These conflicting requirements can be achieved, inter alia, by having a nickel content of at least 10 atom% in the alloys.
  • EP 0 121 649 B1 shows that with an increased nickel content the iron content of the alloy must be> 10 atom%, so that a harmonic signal is not caused by mechanical stresses, e.g. B. by bending or twisting the signal strip, can be affected.
  • the lower limits for the heat treatment from the above result in explanations and heat treatment temperatures. From the Requirement that the signal strip respond to the heat treatment, d. H. a high proportion of the suggestion described has harmonics. The corresponding Upper limits result from the requirement that the signal strip still sufficiently ductile after the heat treatment have to be.
  • Table II and Table III summarize several typical test results for the limitation of suitable heat treatments. A distinction is made between heat treatment on the tape winding and heat treatment in the run. Examples of cross-field heat treatments on the coil. With the brittle tape, it was not possible to measure the harmonic response, since no tape strip could be cut off due to the brittleness.
  • alloy Heat treatment Ductility harmonious answer Co 67.3 Fe 3.7 Mo 1.5 Si 16.5 B 11 10s 230 ° C without train Ductile bad 10s 230 ° C with train Ductile bad 10s 350 ° C without train Ductile bad 10s 350 ° C with train Ductile GOOD 10s 350 ° C with train without magnetic field Ductile GOOD 60s 420 ° C BRITTLE Co 43.3 Fe 6.7 Ni 28 Si 13 B 9 10s 230 ° C without train Ductile bad 10s 230 ° C with train Ductile bad 10s 350 ° C without train Ductile moderate 10s 350 ° C with train Ductile GOOD 10s 350 ° C with train without magnetic field Ductile GOOD 60s 420 ° C BRITTLE Co 74.5 Fe 1.5 Mn 4 Si 11
  • a band of an amorphous, ferromagnetic alloy of the composition Co 58 Fe 5.5 Ni 13 Si 14.5 B 9 was cast using rapid solidification in a bandwidth of 54 mm and an average thickness of 25 ⁇ m.
  • the cast tape was subjected to a heat treatment.
  • a constant magnetic field was again applied during the heat treatment, but this time it was oriented parallel to the winding axis of the tape roll, that is to say transversely to the casting direction of the tape.
  • the strength of the magnetic field was again chosen so that the tape was ferromagnetically saturated in the direction of the applied magnetic field, for which a higher field strength of 2000 A / cm was necessary due to the demagnetization factor parallel to the winding axis of the tape roll.
  • the strip was completely ductile after said heat treatment, d. H. it was easy to process mechanically, d. H. So climbing, punching or similar processes without too break.
  • FIG. 4 shows the harmonic spectrum of the signal strip in comparison to the signal strip in the first experiment and in the second experiment. It is very clear that, in contrast to the signal strips dealt with in the first and in the second experiment, this time there is a significantly high proportion of harmonics, as is required in harmonic goods security systems for recognizing the signal strip.
  • FIG. 5 shows a preferred exemplary embodiment for the production of the display elements according to the invention.
  • a manufacturing device for generating of individual magnetic marking elements is suitable, the then in a separate process on or in the packaging the goods are attached.
  • the deactivation elements attached to a carrier film the by heating the connection with the deactivation elements reached.
  • the carrier film is removed from a roll 3 heated zone 1 and there to a temperature of approx. Heated to 150 ° C.
  • This carrier film is between the pressure rollers 4 associated with 3 a material for deactivation.
  • Each element for deactivation consists of a magnetic one semi-hard alloy.
  • the band thickness of these deactivating elements is 51 ⁇ m and the band width is 8 mm.
  • the distance between the deactivation elements applied to the carrier film is set to 4 mm.
  • This composite is then heated again in the heating zone 2 to the temperature of 150 ° C., in order then to be connected between the pressure rollers 5 with a signal strip optimally heat-treated for use in this application.
  • the tape had the dimensions 40 mm x 0.025 mm.
  • the magnetic marking element was first end-magnetized State of the deactivation elements with a magnetic Alternating field with an amplitude of 1A / cm and a frequency excited by 1 kHz.
  • the display element was parallel to Earth's magnetic field is oriented, which is a direct field magnetization of about 0.2 A / cm.
  • the change in induction caused by the alternating field was in an air-compensated area surrounding the center of the display element Pick-up coil with 100 turns based on the induced there Voltage detected.
  • the induced voltage was here using a spectral analyzer into their frequency components disassembled, d. H. a harmonic analysis was carried out.
  • the one for the transversely deflected signal strips became one very high proportion of harmonics, as found in harmonic security systems to recognize the magnetic marking element used to get.
  • the deactivation elements were now magnetized by applying a magnetic field of 250A / cm and the display element thereafter of the same magnetic harmonic Subjected to analysis. Through the magnetized deactivation elements were now only a part of harmonics found the barely different from the natural background noise highlighted.
  • the magnetic marking elements were accordingly by magnetizing the deactivation elements unrecognizable for a harmonious goods security system made.
  • the magnetic manufactured according to this embodiment The marking element thus perfectly fulfills the requirements preferred to one in the source protection of goods used deactivatable magnetic marker.
  • the magnetic marking element is attached directly to the packaging material.
  • the integration of the production of the magnetic marking elements into the packaging machine described here leads to a very economical labeling of the goods, as is required in particular for source protection.
  • a carrier film which is adhesive on both sides is fastened from the decoiler 2 to an endless conveyor belt running over the transport rollers 1 with the pressure rollers 3 in the first step.
  • the tape is fastened on the adhesive tape by the run-off roller 5 via the pressure rollers 3.
  • the adhesive tape is pulled off the endless conveyor belt from the transport rollers 9, which are preferably Teflon-coated, and introduced into a cutting device 6.
  • the magnetic marking element Before the magnetic marking element from the cutting device 6 is separated from the supplied components the magnetic marking element fixed by a gripper arm, in that in the functional surface of the gripper arm, for example Permanent magnet is attached. This permanent magnet then pulls that magnetic marking element. After the magnetic marker is now completely separated, it will be separated from the The gripper arm is pressed onto the packaging material that runs past.
  • the adhesive strength of the carrier film is now significantly stronger than the magnetic fixation of the magnetic marking element the gripper arm so that the magnetic marker on the Packaging material is fixed.
  • the packaging material is applied after the magnetic Marking element coated with a laminate 10 on both sides and in subsequent steps, which are not shown here, processed into a goods packaging.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Burglar Alarm Systems (AREA)
EP00108525A 1999-04-23 2000-04-19 Bandelettes de marquage magnétiques et leurs procédé de fabrication Expired - Lifetime EP1047032B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19918589 1999-04-23
DE19918589A DE19918589A1 (de) 1999-04-23 1999-04-23 Magnetischer Markierstreifen und Verfahren zur Herstellung eines magnetischen Markierstreifens

Publications (3)

Publication Number Publication Date
EP1047032A2 true EP1047032A2 (fr) 2000-10-25
EP1047032A3 EP1047032A3 (fr) 2001-03-21
EP1047032B1 EP1047032B1 (fr) 2004-01-02

Family

ID=7905693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00108525A Expired - Lifetime EP1047032B1 (fr) 1999-04-23 2000-04-19 Bandelettes de marquage magnétiques et leurs procédé de fabrication

Country Status (3)

Country Link
US (1) US6313746B1 (fr)
EP (1) EP1047032B1 (fr)
DE (2) DE19918589A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1586135A1 (fr) * 2003-01-23 2005-10-19 Vacuumschmelze GmbH & Co. KG Noyau d'antenne
EP1774486A4 (fr) * 2004-04-23 2010-05-05 Demodulation Inc Detection d'articles presentant des sections transversales sensiblement rectangulaires

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4128721B2 (ja) * 2000-03-17 2008-07-30 株式会社東芝 情報記録物品
IT1319295B1 (it) * 2000-04-28 2003-10-10 Giancarlo Zanetti Banda magnetica con strato adesivo.
JP3806404B2 (ja) * 2000-07-17 2006-08-09 日本発条株式会社 磁気マーカーとその製造方法
WO2006024127A1 (fr) * 2004-09-01 2006-03-09 Mxt Inc. Applicateur pour marqueur magnetique et procede associe
DE102009043462A1 (de) 2009-09-30 2011-03-31 Vacuumschmelze Gmbh & Co. Kg Magnetischer Streifen, Sensor aufweisend einen magnetischen Streifen und Verfahren zur Herstellung eines magnetischen Streifens
CN109887739B (zh) * 2019-03-29 2021-03-02 中变集团上海变压器有限公司 一种变压器铁芯制造方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3586593A (en) * 1965-10-22 1971-06-22 Ernest A Dahl Jr Magnetically actuatable business machine card
US3870867A (en) * 1970-11-24 1975-03-11 Monarch Marking Systems Inc Web of record members
US3746606A (en) * 1971-06-17 1973-07-17 Ncr Off-line process for laminating magnetic tape to tab stock
US3820104A (en) * 1972-12-15 1974-06-25 Stop Loss Inc Method and system for detecting an object within a magnetic field interrogation zone
US4222517A (en) * 1978-09-18 1980-09-16 Samuel Cornelious Evans Magnetic marker
US4298862A (en) 1979-04-23 1981-11-03 Allied Chemical Corporation Amorphous antipilferage marker
US4484184A (en) * 1979-04-23 1984-11-20 Allied Corporation Amorphous antipilferage marker
DE3026482A1 (de) * 1980-07-12 1982-02-04 Evans, Samuel Cornelious, Smyrna, Ga. Magnetischer markierstreifen
US4510490A (en) * 1982-04-29 1985-04-09 Allied Corporation Coded surveillance system having magnetomechanical marker
US4553136A (en) * 1983-02-04 1985-11-12 Allied Corporation Amorphous antipilferage marker
DE3717043A1 (de) * 1987-05-21 1988-12-15 Vacuumschmelze Gmbh Amorphe legierung fuer streifenfoermige sensorelemente
US5015993A (en) * 1989-06-29 1991-05-14 Pitney Bowes Inc. Ferromagnetic alloys with high nickel content and high permeability
US5580664A (en) * 1992-12-23 1996-12-03 Minnesota Mining And Manufacturing Company Dual status thin-film eas marker having multiple magnetic layers
US5565847A (en) * 1994-11-23 1996-10-15 International Business Machines Corporation Magnetic tag using acoustic or magnetic interrogation
US6187112B1 (en) * 1995-04-13 2001-02-13 Ryusuke Hasegawa Metallic glass alloys for mechanically resonant marker surveillance systems
DE19533362A1 (de) * 1995-09-09 1997-03-13 Vacuumschmelze Gmbh Längsgestreckter Körper als Sicherungsetikett für elektromagnetische Diebstahlsicherungssysteme

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1586135A1 (fr) * 2003-01-23 2005-10-19 Vacuumschmelze GmbH & Co. KG Noyau d'antenne
EP1774486A4 (fr) * 2004-04-23 2010-05-05 Demodulation Inc Detection d'articles presentant des sections transversales sensiblement rectangulaires

Also Published As

Publication number Publication date
EP1047032B1 (fr) 2004-01-02
DE50004900D1 (de) 2004-02-05
EP1047032A3 (fr) 2001-03-21
US6313746B1 (en) 2001-11-06
DE19918589A1 (de) 2000-10-26

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