CN101730464A - Electromagnetic shielding material - Google Patents
Electromagnetic shielding material Download PDFInfo
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- CN101730464A CN101730464A CN200880023974A CN200880023974A CN101730464A CN 101730464 A CN101730464 A CN 101730464A CN 200880023974 A CN200880023974 A CN 200880023974A CN 200880023974 A CN200880023974 A CN 200880023974A CN 101730464 A CN101730464 A CN 101730464A
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- electromagnetic shielding
- shielding material
- gauze
- intelligent chip
- polymer film
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Images
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
- G06K19/07309—Means for preventing undesired reading or writing from or onto record carriers
- G06K19/07318—Means for preventing undesired reading or writing from or onto record carriers by hindering electromagnetic reading or writing
- G06K19/07327—Passive means, e.g. Faraday cages
-
- 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
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- 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
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- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Security & Cryptography (AREA)
- Power Engineering (AREA)
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Laminated Bodies (AREA)
- Credit Cards Or The Like (AREA)
Abstract
A kind of electromagnetic shielding material comprises the conductive layer on the gauze and the surface of this gauze that adheres to adjacent setting.This arrange to limit laminated construction, prevents reading of chip when laminated construction is inserted between the transmitting antenna of the reception antenna of RFID intelligent chip and signal generator.Safety means that can electromagnetic shielding RFID intelligent chip comprise electrical shielding material, and this electrical shielding material comprises the substrate of at least one conductive layer and at least one adjacent setting.A kind of method of electromagnetic shielding RFID intelligent chip comprises provides and is provided with electromagnetic shielding material, and this electromagnetic shielding material approaches RFID intelligent chip and preferred between the transmitting antenna of RFID intelligent chip and RFID signal generator most.
Description
Technical field
The material that relate generally to electromagnetism of the present invention can't see through relates in particular to reading the equipment of electromagnetic frequency, and for example radio frequency identification equipment (RFID) provides the material of electromagnetic shielding.
Background technology
The system that is combined with RFID typically comprises the RFID " label " that uses any suitable fetch equipment can read.This label comprises one or more computer chips (" intelligent chip ") and associated antenna, and this associated antenna makes the information that is encoded on the intelligent chip send to fetch equipment.Because employed intelligent chip becomes more and more littler, the RFID technology is being attached in the more and more equipments, particularly in the consumption industrial aspect.In addition, because the dissimilar commerce of keeping, distributing and tracking inventory for needs, it is more and more economical that the RFID technology becomes, so that rfid system becomes in daily life is more and more general.
REID also is used for people's tracking and identification gradually.More effectively for they handle, be devoted to the RFID label is attached in passport, identity card, bank card and the transportation pass that relates to when being open to the custom in order to travel people.In fact,, brush credit card, also can finish check-in procedures bank card on the airport for the navigation that is about to begin by the self-service booth of reporting for work in airline even without using specific bank card to purchase the air ticket.
" efficient " following rfid system and come is even also be accompanied by mistake usually, misuse is that the whole of sensitive information have things stolen.When only by brandishing card or the wand that comprises intelligent chip in the surface that is provided with the RFID fetch equipment thereafter, in the time of can remembering expense on the bank card account, the user unintentionally with they wallet or wallet and such surface from when too near, the possibility that will increase makes a mistake reads.In addition, when using a bank card approval expense, might be also (wittingly or unexpectedly) read another and contained the bank card of intelligent chip, thereby cause more than one expense occurring for single purchase.
In addition, when the quantity of considering fetch equipment and accessibility thereof, immoral people can read the sensitive information on the card that contains intelligent chip under the main ignorant situation of card.For example, the miniature camera on the well-known auto-teller (ATM) is used to catch the people's of input PIN video.Miniature reader also may be set similarly to catch the information that is encoded on the chip.It is to be noted especially, most of people will be in the face of ATM, open and check their wallet or wallet, so that the people who prevents in their back spies on wallet or wallet, when a people thinks that he is avoiding his property to exempt from coveting safely, be arranged on that ATM goes up or its top and remote-operated fetch equipment can make that unscreened coded message directly and is easily read with being difficult to discover.
Needed is a kind of equipment, and this equipment makes the user controllably interrupt or prevent to utilize the reading of chip coded message of RFID technology.
Summary of the invention
In one aspect, the present invention relates to a kind of electromagnetic shielding material.This material comprises the conductive layer on first gauze and the surface of first gauze that adheres to adjacent setting.Polymer film can adhere to the surface of the conductive layer of adjacent setting.This arrange to limit laminated construction, prevents reading of RFID intelligent chip when this laminated construction is inserted between the transmitting antenna of the reception antenna of RFID intelligent chip and RFID signal generator.
On the other hand, the present invention relates to a kind of electromagnetic shielding material, this electromagnetic shielding material that forms lamination comprises first gauze and second gauze that the metallized polymeric film is clipped in the middle.And, when being inserted between the transmitting antenna of the reception antenna of RFID intelligent chip and RFID signal generator, this lamination prevents reading of RFID intelligent chip.
On the other hand, the present invention relates to the electromagnetic shielding material of lamination form.These laminations are the combination of the paper that reads, polymer film and/or the conductive material of prevention RFID intelligent chip.Aspect this, also have in all others of the present invention, can use any suitable device to print this paper, any suitable device comprises laser printing equipment, ink-jet printer, offset press, digital printer, flexographic printing and uses hand-written apparatus with hand, but is not limited thereto.
Also have on the other hand in, the present invention relates to a kind of safety means that can electromagnetic shielding RFID intelligent chip.These safety means comprise electromagnetic shielding material, and this electromagnetic shielding material has the substrate of at least one conductive layer and at least one adjacent setting.This equipment can be paper stock (cardstock), wallpaper of envelope, cover (holder), sheath (sheath), sleeve (sleeve), a piece of paper or fabrication sheet etc.This equipment also can be attached in the equipment of carrying, and for example wallet, wallet, handbag, luggage, calculator carry bag, small-sized protector (pocket protector) etc.When between the transmitting antenna of reception antenna that electromagnetic shielding material is inserted into the RFID intelligent chip and RFID signal generator, this electromagnetic shielding material can prevent reading of RFID intelligent chip.
In aspect another, the present invention relates to a kind of method of electromagnetic shielding RFID intelligent chip.In the method, provide the electromagnetic shielding material that comprises at least one conductive material, and this electromagnetic shielding material is set approaches the RFID intelligent chip most, and preferred between the transmitting antenna of RFID intelligent chip and RFID signal generator.Do like this, electromagnetic shielding material interrupts, stops or cancel the RFID signal of the reception antenna from signal generator to the RFID intelligent chip, thus electromagnetic shielding RFID intelligent chip.
An advantage of the present invention is there is not the possessory mandate of personal information, and the personal information that is encoded in the equipment that can read via RFID (for example RFID intelligent chip) can not be read.Particularly, electromagnetic shielding material approaches the RFID intelligent chip most and causes the transmission of plane-wave field transmitting signal and the abundant interference of reception, so that reader determines to be included in the ability of the information in the intelligent chip is invalid.By making this ability invalid, carry the individual that the RFID intelligent chip is attached to wherein equipment (for example passport, identity card, credit card, visa card or the prepayment pass, Gift Card etc.) and can be sure of that he can obstruct the unauthorized to being encoded to his information on this equipment to read.The explicit permission that does not have the user can not read coding or information.
In intelligent chip is in embodiment in (for example document form) mini-plant that can be carried by the individual, electromagnetic shielding material of the present invention can be the form of envelope (envelope), file (folder), sleeve or similar paper product, can hold the equipment with RFID intelligent chip therein.In addition, or in substitute, electromagnetic shielding material can be the form of sheet and remain and approach intelligent chip most.In any embodiment, can be with the paper of any structure printing, impression, painted, cutting, perforation and/or folding envelope, file, sleeve etc.Also can apply or not apply this paper.Consider the characteristic that paper weight is light, most of paper are suitable for the present invention.Be used for the embodiment of envelope or other Document folio at electromagnetic material, transparent or semitransparent window can be attached in the envelope of other Document folio so that file need not to touch and read or observe by the artificially.
In intelligent chip was in embodiment in big or the equipment that is not easy to move, electromagnetic shielding material of the present invention can be used for shielding packing (packaging) or even whole room.Particularly for the electronic equipment of hard disc of computer, computer media and other type, its packing can be used electromagnetic shielding material lining, coating or with other mode combination.Such packing can comprise computer casing, tray salver, case etc., but is not limited thereto.Other packing can comprise tube (drum), carrying case (tote), containerizing (pallet wrapping) equipment, cargo transport container (cargocontainer) etc.Electromagnetic shielding material even can be the form that can be used for to wallpaper or insulating materials or other paper of ceiling and ground lining.
Description of drawings
Fig. 1 is the decomposition diagram of electromagnetic shielding material of the present invention.
Fig. 2 is the decomposition diagram of another embodiment of electromagnetic shielding material of the present invention.
Fig. 3 is the side cutaway view of another embodiment of the electromagnetic shielding material of Fig. 2.
Fig. 4 is the side cutaway view of another embodiment of the electromagnetic shielding material of Fig. 2.
Fig. 5 is the perspective view of another embodiment of electromagnetic shielding material of the present invention.
Fig. 6 is the end view of three layers of electromagnetic shielding material, and wherein polymer film is clipped in the middle of the layer of conductive material.
Fig. 7 is the end view of the electromagnetic shielding material of Fig. 6, and wherein conductive material is attached among the apparent surface of polymer film to form three layers.
Fig. 8 is the schematic diagram that the RFID of electromagnetic shielding material of the present invention reads.
Fig. 9 is the schematic diagram that is combined with the equipment of electromagnetic shielding material of the present invention.
Figure 10 is the schematic diagram of another embodiment that is combined with the equipment of electromagnetic shielding material of the present invention.
Embodiment
Referring to Fig. 1, an embodiment of electromagnetic shielding material illustrates with 10 generally.Electromagnetic shielding material 10 is four layer laminate materials, and this four layer laminate material 10 comprises first gauze 12, polymer film 14, conductive layer 16 and second gauze 18.It is adhering to each other that adhesive 20 is used on the surface of each adjacent setting in first gauze 12, polymer film 14, conductive layer 16 and second gauze 18.
Some materials of gauze and polymer film are described in the U.S. Patent No. 6,926,968 of the U.S. Patent No. 6,673,465 of Lordi and Lordi, and both are incorporated in this in full by reference.
In another embodiment, conductive layer 16 can comprise the metallic particles that deposits on the one or more polymer films 14 and second gauze 18.Metallic particles can be that aluminium (for example element aluminum), aluminium alloy or the compound that contains aluminium or they can comprise other metal (for example copper, silver, nickel etc.).In yet another embodiment, conductive layer 16 can be that the braided wire or the nothing of metal spins.
In the embodiment, conductive layer 16 can comprise nonmetallic materials again, for example matrix material of carbon, load carbon, graphite, above-mentioned combination, or the like.Can also use the CNT of single wall form or double-walled form.As in the embodiment of conductive layer 16, can use for example deposition of carbon nanotubes such as chemical vapour deposition (CVD) of any suitable technique, at CNT with the thickness of accurate control conductive layer.
In the embodiment, adhesive 20 itself can conduct electricity again.In such embodiments, adhesive comprises the suitable conductive material that is blended in wherein.Such composition comprises the metal of particle, powder, granule, pearl, above-mentioned forms such as combination, but is not limited thereto.Metal can be that aluminium (for example element aluminum), aluminium alloy or the compound that contains aluminium or they can be other metal (for example copper, silver, nickel etc.).
Being used for the adhesive 20 that first gauze 12, polymer film 14, conductive layer 16 and second gauze 18 adhere to into the lamination form can be 100% solid binder.The present invention is not limited to this, and other adhesive also within the scope of the invention.Particularly, adhesive 20 can be that solvent base, water base, hot melt, ultra-violet radiation are curable, electron beam curable and above-mentioned combination etc.
When the solid binder when 100% is used for stacked first gauze 12, polymer film 14, conductive layer 16 and second gauze 18, between gauze and polymer film, produces and destroy bonding.Can not make gauze separate after destroying bonding and be gauze and polymer film solidifying under the test of T peel adhesion and a kind of bonding that paper is kept perfectly with polymer film.
When the solid binder that uses 100%, such adhesive is the adhesive of low temperature (flowing under about 100 room temperature), two components.In substitute, adhesive can be (gel that heating at room temperature can be flowed), the one-package adhesive that warms up.Adhesive permeation and confining force (ability that keeps adhesive) based on employed gauze are selected any adhesive.Usually, when the permeability of paying close attention to paper and confining force, use the adhesive of warm temperature; When not too paying close attention to permeability and confining force, use the adhesive of low temperature.When the solid binder that uses 100%, it is stacked to use the standard lamination techniques to finish usually.
Referring now to Fig. 2,, another embodiment of electromagnetic shielding material illustrates with 110 generally.Electromagnetic shielding material 110 is a laminated material, and this laminated material 110 comprises first gauze 112, polymer film 114, conductive layer 116 and second gauze 118.First gauze 112 and polymer film 114 adjacent settings, and use adhesive 120 adhering to each other.Conductive material 116 is penetrated into or is attached to polymer film 114 to limit the metallized polymeric film in other mode, has so just avoided conductive material is adhered to polymer film.Use adhesive 120 second gauze 118 to be adhered to (being combined with conductive material 116) polymer film 114.
In electromagnetic shielding material 110, first gauze 112 and second gauze 118 all comprise fiber mesh material (being similar to the embodiment of front), and polymer film 114 is ability with enough dimensional stabilitys, shrinkage character, balance, adhesion gauze material and stable on heating polyester, polypropylene etc.
But the conductive material 116 in conductive shield material 110 comprises the particle of suitable conductive material, for example the aluminium of powder type, copper, silver, nickel and alloy thereof etc.Also can use nonmetallic materials for example matrix material, graphite, CNT, above-mentioned combination, the combination of above-mentioned and metal etc. of carbon, load carbon.In this embodiment, as shown in Figure 3, conductive material 116 can be dispersed in the polymer film 114 equably, or as shown in Figure 4, conductive material 116 can be along in the set of surfaces of polymer film.
Referring now to Fig. 5,, another embodiment of electromagnetic shielding material illustrates with 210 generally.Electromagnetic shielding material 210 is three layer laminate materials, and this three layer laminate material 210 comprises gauze 212, polymer film 214 and conductive material 216.Conductive material 216 is clipped in the middle of gauze 212 and the polymer film 214.But the present invention is not limited to this, and gauze 212 or conductive material 216 can be clipped between other two layers.Adhesive is used for three layers of electromagnetic shielding material 210 are adhered to each other.Conductive material 216 can be aluminium, copper, silver, nickel, above-mentioned alloy, above-mentioned combination etc.Conductive material 216 can also be carbon, CNT, load carbon matrix material, graphite, they combination, have their combination etc. of metal.
Referring now to Fig. 6 and Fig. 7,, another embodiment of electromagnetic shielding material illustrates with 310 generally.This electromagnetic shielding material 310 is three layer laminate materials, and this three layer laminate material 310 comprises the polymer film 314 that is clipped between first conductive material 316 and second conductive material 317.In electromagnetic shielding material 310, first conductive material 316 and second conductive material 317 all are aluminium foil.But the present invention is not limited to this, makes first conductive material 316 and both materials of second conductive material 317 can be any conductive materials, for example the aluminium of powder type, copper, silver, nickel and alloy thereof etc.Also can use nonmetallic materials, for example the matrix material of carbon, load carbon, graphite, CNT, above-mentioned combination etc.In electromagnetic shielding material 310, as shown in Figure 6, first conductive material 316 and second conductive material 317 all can adhere to the apparent surface of polymer film 314, or as shown in Figure 7, first conductive material 316 and second conductive material 317 directly are attached in the polymer film and concentrate along its end face surface basically.
Referring now to Fig. 8,, the shielding validity of the RFID radiation of electromagnetic shielding material 10 illustrates with 40 generally.Though electromagnetic shielding material is depicted as four layer laminate materials, this four layer laminate material is included in polymer film and the conductive layer that is covered with in the gauze, but the present invention is not limited to this, and other any electromagnetic shielding material disclosed herein may be used to described device.
For effective shielding is provided, electromagnetic shielding material 10 is inserted between transmitting antenna 42 and the reception antenna 44.Signal generator 46 outputs to unmodulated sinusoidal RF signal in the power amplifier 48 under discrete frequency.Signal generator 46 under discrete frequency (13.56MHz) with predetermined amplitude by increment, in the feed-in power amplifier 48 and by transmitting antenna 42.Resulting plane wave signal is spread into electromagnetic shielding material 10 by the field.Depend on that electromagnetic shielding material 10 is attached to the accurate structure of equipment wherein, the signal of propagation is preferred not to be received by the reception antenna 44 that is connected to RFID receiving unit 50, and this RFID receiving unit 50 comprises preamplifier 52 and the analyzer 54 that is arranged in chip.
Referring now to Fig. 9 and Figure 10,, the safety means that electromagnetic shielding material 10 of the present invention is attached to wherein illustrate with 60 generally.In Fig. 9, safety means 60 can be envelope (for example secure e-mail envelope, deliver mailbag etc.), protective sleeve, sheath, cover, wallpaper, the RFID machine card (for example bank card, visa card, phonecard etc.) that can scan, medical package etc.When safety means 60 were envelope, protective sleeve, cover etc., it can be made by cutting, folding and gummed by a slice electromagnetic shielding material 10.
Except that electromagnetic shielding material 10, safety means comprise the substrate 62 of adjacent setting.Substrate 62 can be other material of paper, cardboard, polymer or envelope, protective sleeve, sheath, cover, wallpaper etc., and it comprises or shield the intelligent chip 66 of rfid system.When safety means 60 were wallpaper, wallpaper can the vinyl material etc. be made backsight.
In another embodiment, as shown in figure 10, but substrate 62 can be directly be combined with the RFID machine scanning card of the intelligent chip of rfid system 66 or or the like.In any embodiment, substrate 62 can be attached in the structure of another article 70.Article 70 can be wallet, wallet, handbag, small-sized protector, clothes article, suitcase or calculator bag.Article 70 can also be room or whole building.Also have in any embodiment, electromagnetic shielding material 10 approaches intelligent chip 66 most and provides effective shielding to intelligent chip.
Embodiment-electromagnetic shielding material structure and validity
The various layouts of structure gauze material, polymer film and metal (with the paper tinsel form or be attached in the polymer film), and test shielding validity.
| Sample | Structure | The thickness of metal (inch) | Use hand-held reader/detector to read (can read/not can read) | Read (decibel) (13.56 MHz test frequency) based on IEEE-299 shielding validity |
| ?1 | Paper/film/paper (3 layers) | Can read | Not test | |
| ?2 | The film of paper/coating Al (2 layers) | 3x10 -7 | Can read | Not test |
| ?3 | Paper/Al paper tinsel/film/paper (4 layers) | 3.5x10 -4 | Not can read | 43 |
| ?4 | Paper/Al paper tinsel/film (3 layers) | 1x10 -3 | Not can read | 48.67 |
| ?5 | Al paper tinsel/film/Al paper tinsel (3 layers) | 3.5x10 -4，3.5x10 -4 | Not can read | 61 |
| ?6 | Paper/Cu paper tinsel/film (3 layers) | 7x10 -4 | Not can read | 43 |
Although illustrated and described the present invention, it should be understood that not depart from the scope of the present invention that those skilled in the art can make various variations and equivalent can substitute its element according to its specific embodiments.In addition, do not break away from its main scope, can modify to be fit to concrete situation or material according to instruction of the present invention.Therefore, be intended to the restriction that the present invention is not subjected to disclosed specific embodiments in above-mentioned detailed explanation, and the present invention will comprise all embodiments in the scope that falls into claims.
Claims (34)
1. electromagnetic shielding material, described electromagnetic shielding material comprises:
First gauze; With
Conductive layer, described conductive layer adhere to the surface of described first gauze of adjacent setting.
2. electromagnetic shielding material according to claim 1, described electromagnetic shielding material further comprises polymer film, described polymer film adheres to the surface of the described conductive layer of adjacent setting;
Wherein said first gauze, described conductive layer and described polymer film form lamination, can prevent reading of described RFID intelligent chip when described lamination is inserted between the transmitting antenna of the reception antenna of RFID intelligent chip and RFID signal generator.
3. electromagnetic shielding material according to claim 2, described electromagnetic shielding material further comprises adhesive, described adhesive is used for described conductive layer is adhered to described first gauze, and described polymer film is adhered to described conductive layer.
4. electromagnetic shielding material according to claim 3, wherein said adhesive is selected from the group of being made up of following: 100% solid binder, solvent-based adhesive, water-based adhesive, hot melt adhersive, ultra-violet radiation curable adhesive, electron beam curable adhesive and above-mentioned combination.
5. electromagnetic shielding material according to claim 3, wherein said adhesive comprises conductive material.
6. electromagnetic shielding material according to claim 1, wherein said first gauze comprises fiber mesh material, described fiber mesh material is selected from the group of being made up of following: native fiber, synthetic fibers and regenerated fiber.
7. electromagnetic shielding material according to claim 2, wherein said polymer film comprises the material that is selected from by the following group of forming: PLA, polyester, polypropylene and above-mentioned combination.
8. electromagnetic shielding material according to claim 1, wherein said conductive layer comprises the material that is selected from by the following group of forming: metal forming, metallic particles, carbon, CNT and above-mentioned combination.
9. electromagnetic shielding material according to claim 8, in wherein said metal forming and the described metallic particles at least the metal of one be selected from the group of forming by following: aluminium, copper, silver, nickel, above-mentioned alloy and above-mentioned combination.
10. electromagnetic shielding material according to claim 2, described electromagnetic shielding material further comprises second gauze, described second gauze is arranged on the surface of described polymer of adjacent setting.
11. an electromagnetic shielding material, described electromagnetic shielding material comprises:
First gauze;
The metallized polymeric film, described metallized polymeric film adheres to the surface of described first gauze of adjacent setting;
Second gauze, described second gauze adheres to the surface of the described metallized polymeric film of adjacent setting;
Wherein said first gauze, described metallized polymeric film, described second gauze form lamination, can prevent reading of described RFID intelligent chip when described lamination is inserted between the transmitting antenna of the reception antenna of RFID intelligent chip and RFID signal generator.
12. electromagnetic shielding material according to claim 11 wherein uses adhesive that described metallized polymeric film is adhered to described first gauze and described second gauze.
13. electromagnetic shielding material according to claim 11, wherein said adhesive conducts electricity.
14. electromagnetic shielding material according to claim 11, wherein said metallized polymeric film comprise the particle that is penetrated into the conductive material in the polymer film.
15. electromagnetic shielding material according to claim 12, the described particle of wherein said conductive material is selected from the group of being made up of following: aluminium, copper, silver, nickel, above-mentioned alloy and above-mentioned combination.
16. an electromagnetic shielding material, described electromagnetic shielding material comprises:
Gauze;
Polymer film; With
Conductive material, described conductive material are clipped in the middle of described gauze and the described polymer film;
Wherein said gauze, described polymer film and described conductive material form lamination, can prevent reading of described RFID intelligent chip when described lamination is inserted between the transmitting antenna of the reception antenna of RFID intelligent chip and RFID signal generator.
17. further comprising, electromagnetic shielding material according to claim 16, described electromagnetic shielding material be used for adhesive that described gauze, described polymer film and described conductive material are adhered to each other.
18. electromagnetic shielding material according to claim 17, wherein said adhesive comprises conductive material.
19. electromagnetic shielding material according to claim 16, wherein said conductive material is selected from the group of being made up of following: aluminium, copper, silver, nickel, above-mentioned alloy and above-mentioned combination.
20. an electromagnetic shielding material, described electromagnetic shielding material comprises:
First conductive material;
Second conductive material; With
Polymer film, described polymer film are clipped in the middle of described first conductive material and described second conductive material;
Wherein said first conductive material, described second conductive material and described polymer film form lamination, can prevent reading of described RFID intelligent chip when described lamination is inserted between the transmitting antenna of the reception antenna of RFID intelligent chip and RFID signal generator.
21. electromagnetic shielding material according to claim 20, in wherein said first conductive material and described second conductive material at least one be selected from the group of forming by following: aluminium, copper, silver, nickel, above-mentioned alloy and above-mentioned combination.
22. electromagnetic shielding material according to claim 20, in wherein said first conductive material and described second conductive material at least one be selected from the group of forming by following: the matrix material of carbon, load carbon, graphite, CNT and above-mentioned combination.
23. electromagnetic shielding material according to claim 20, in wherein said first conductive material and described second conductive material at least one adhere to described polymer film.
24. electromagnetic shielding material according to claim 20, in wherein said first conductive material and described second conductive material at least one be attached in the surface of described polymer film.
25. one kind can electromagnetic shielding RFID intelligent chip safety means, described safety means comprise:
Electromagnetic shielding material with at least one conductive layer; With
The substrate of at least one adjacent setting;
Wherein when described electromagnetic shielding material was inserted between the transmitting antenna of the reception antenna of described RFID intelligent chip and RFID signal generator, described electromagnetic shielding material can prevent reading of described RFID intelligent chip.
26. safety means according to claim 25, described safety means further comprise non-conductive layer, and described non-conductive layer is selected from the group of being made up of following: paper, polymer and above-mentioned combination.
27. safety means according to claim 25, wherein said at least one conductive layer comprise by the material in the following group of forming: the matrix material of aluminium, copper, silver, nickel and alloy thereof, carbon, load carbon, graphite, CNT and above-mentioned combination.
28. safety means according to claim 25, the substrate of wherein said at least one adjacent setting are the paper that described RFID intelligent chip can insert wherein envelope, sleeve, sheath, cover or file.
29. safety means according to claim 25, the substrate of wherein said at least one adjacent setting are wallpaper.
30. safety means according to claim 25, wherein said substrate are attached in the structure of wallet, wallet, handbag, small-sized protector, clothes article, suitcase or calculator bag.
31. the method for an electromagnetic shielding RFID intelligent chip, described method comprises step:
The electromagnetic shielding material that comprises at least one conductive material is provided;
Described electromagnetic shielding material is set approaches the RFID intelligent chip most; With
Described electromagnetic shielding material is inserted between the transmitting antenna of described RFID intelligent chip and RFID signal generator.
32. method according to claim 31, wherein said electromagnetic shielding material comprises lamination, and described lamination further comprises at least one gauze and at least one polymer film.
33. method according to claim 31 wherein provides the described step of described electromagnetic shielding material to comprise described electromagnetic shielding material is attached in the equipment, described equipment is used to comprise the file that contains described RFID intelligent chip.
34. method according to claim 33, the described equipment that wherein is used for include file are selected from and comprise the group of being made up of following: envelope, protective sleeve, file, wallet, wallet, handbag and room.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80377307A | 2007-05-16 | 2007-05-16 | |
| US11/803,773 | 2007-05-16 | ||
| PCT/US2008/063595 WO2008144336A1 (en) | 2007-05-16 | 2008-05-14 | Electromagnetic shielding material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101730464A true CN101730464A (en) | 2010-06-09 |
Family
ID=40122125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880023974A Pending CN101730464A (en) | 2007-05-16 | 2008-05-14 | Electromagnetic shielding material |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2154950A4 (en) |
| JP (1) | JP2011508408A (en) |
| CN (1) | CN101730464A (en) |
| AU (1) | AU2008255083A1 (en) |
| TW (1) | TW200906609A (en) |
| WO (1) | WO2008144336A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103153640A (en) * | 2010-09-01 | 2013-06-12 | 现代信用卡有限公司 | Metal payment card, and method for producing same |
| CN103827892A (en) * | 2011-06-28 | 2014-05-28 | 埃里克.科恩 | Scanner resistant device for rfid cards |
| CN107964830A (en) * | 2017-11-17 | 2018-04-27 | 苏州甫众塑胶有限公司 | A kind of preparation method of composite conductive paper |
| CN111386023A (en) * | 2020-03-19 | 2020-07-07 | 江苏万华拓谷新材料科技有限公司 | Cellular composite wave-absorbing electromagnetic shielding material and preparation method thereof |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090096703A1 (en) * | 2007-05-16 | 2009-04-16 | Chase Corporation | Paper/biodegradable plastic laminate and electromagnetic shielding material |
| DE102009016526A1 (en) * | 2009-04-06 | 2010-10-07 | Giesecke & Devrient Gmbh | Multi-layered card-shaped data carrier |
| DE102009021694A1 (en) | 2009-05-18 | 2010-11-25 | Winter Ag | Protective cover for a data carrier with a transponder unit and method for the production thereof |
| DE202009012720U1 (en) * | 2009-08-11 | 2010-01-14 | Göcke, Ludwig, Dipl.-Ökonom | Material for shielding against electromagnetic waves |
| CN101833680A (en) * | 2010-03-26 | 2010-09-15 | 成都兴同达微电子科技有限公司 | Anti-interference method of RFID (radio frequency identification) electronic tag |
| SG11201500362XA (en) | 2012-07-19 | 2015-02-27 | 3M Innovative Properties Co | Electromagnetic shielding label |
| CN103331981A (en) * | 2013-06-25 | 2013-10-02 | 苏州市星辰材料有限公司 | Shielding material |
| WO2015057168A1 (en) * | 2013-10-17 | 2015-04-23 | Nanyang Technological University | Conductive paper and method of forming the same |
| US20160052240A1 (en) | 2014-08-25 | 2016-02-25 | Chase Corporation | Paper/ plastic laminate and electromagnetic shielding material |
| JP6200442B2 (en) * | 2015-03-02 | 2017-09-20 | 東芝テック株式会社 | Reading device and POS device |
| JP2017157697A (en) * | 2016-03-02 | 2017-09-07 | 株式会社巴川製紙所 | Composite sheet for thermal insulation and electromagnetic wave shielding and use of the same |
| US10519672B1 (en) * | 2016-07-01 | 2019-12-31 | Conductive Composites Company Ip, Llc | Electromagnetically shielded wallpaper |
| CN110816431B (en) * | 2019-11-22 | 2023-02-03 | 中国兵器工业第五九研究所 | Heat-insulation noise-reduction neutron shielding functional material and structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4647714A (en) * | 1984-12-28 | 1987-03-03 | Sohwa Laminate Printing Co., Ltd. | Composite sheet material for magnetic and electronic shielding and product obtained therefrom |
| US5275880A (en) * | 1989-05-17 | 1994-01-04 | Minnesota Mining And Manufacturing Company | Microwave absorber for direct surface application |
| WO1993008674A1 (en) * | 1991-10-23 | 1993-04-29 | W.L. Gore & Associates, Inc. | Electromagnetic interference shielding filter |
| US7501984B2 (en) * | 2003-11-04 | 2009-03-10 | Avery Dennison Corporation | RFID tag using a surface insensitive antenna structure |
| ES2373029T3 (en) * | 2004-06-16 | 2012-01-30 | Gemalto Sa | CONTACTED SHIELDED ELECTRONIC DOCUMENT. |
| WO2006107778A2 (en) * | 2005-04-01 | 2006-10-12 | Mastercard International Incorporated | System and method for protection against skimming of information from contactless cards |
-
2008
- 2008-05-14 AU AU2008255083A patent/AU2008255083A1/en not_active Abandoned
- 2008-05-14 WO PCT/US2008/063595 patent/WO2008144336A1/en active Application Filing
- 2008-05-14 JP JP2010508557A patent/JP2011508408A/en not_active Abandoned
- 2008-05-14 EP EP08755449A patent/EP2154950A4/en not_active Withdrawn
- 2008-05-14 CN CN200880023974A patent/CN101730464A/en active Pending
- 2008-05-15 TW TW97117804A patent/TW200906609A/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103153640A (en) * | 2010-09-01 | 2013-06-12 | 现代信用卡有限公司 | Metal payment card, and method for producing same |
| US9058547B2 (en) | 2010-09-01 | 2015-06-16 | Hyundai Card Co., Ltd. | Metal payment card and method of manufacturing the same |
| CN103153640B (en) * | 2010-09-01 | 2015-06-17 | 现代信用卡有限公司 | Metal payment card, and method for producing same |
| CN103827892A (en) * | 2011-06-28 | 2014-05-28 | 埃里克.科恩 | Scanner resistant device for rfid cards |
| CN107964830A (en) * | 2017-11-17 | 2018-04-27 | 苏州甫众塑胶有限公司 | A kind of preparation method of composite conductive paper |
| CN111386023A (en) * | 2020-03-19 | 2020-07-07 | 江苏万华拓谷新材料科技有限公司 | Cellular composite wave-absorbing electromagnetic shielding material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200906609A (en) | 2009-02-16 |
| JP2011508408A (en) | 2011-03-10 |
| EP2154950A4 (en) | 2010-06-23 |
| EP2154950A1 (en) | 2010-02-24 |
| WO2008144336A1 (en) | 2008-11-27 |
| AU2008255083A1 (en) | 2008-11-27 |
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Application publication date: 20100609 |