CN100535920C - Decoration surface covering with burried radio-frequency antenna and radio shielding and manufacturing method - Google Patents
Decoration surface covering with burried radio-frequency antenna and radio shielding and manufacturing method Download PDFInfo
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- CN100535920C CN100535920C CNB2004100372797A CN200410037279A CN100535920C CN 100535920 C CN100535920 C CN 100535920C CN B2004100372797 A CNB2004100372797 A CN B2004100372797A CN 200410037279 A CN200410037279 A CN 200410037279A CN 100535920 C CN100535920 C CN 100535920C
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Abstract
This technology discloses a method: it prints RFID antenna on base board by electric printing ink, and then nips the base board into the surface of high pressure crossbanding interlayer. In addition, it also provides the method: it nips the electric net into the surface of high pressure crossbanding interlayer, forms RFID-shield board, which prevents the motley signal reaching RFID antenna. It also composites the printing antenna and electric net shield to the cross banding interlayer, to avoid reading of RFID label useless compare to reading of RFID label useful.
Description
Technical field
Present technique relates to formation antenna or other conductive structures in solid dielectric in general.Say that more specifically present technique relates at hierarchy, for example form conductive antenna in combination with decorative surfaces overlayer or the laminate.
Background technology
At asset tracking and take inventory emerge in (inventory) field various aspect accuracy and the speed than by manually-operated technology improved technology being arranged all fully.For example, bar code reader can be read bar code on the assets with vision, by with reference to the database relevant with the assets bar code, discerns bar code automatically, thereby discerns assets.Subsequently, can return the information of relevant product, price for example, and other information, for example the stock counting also can obtain timely modification.
But also there is its limitation in this system.For example, no matter be artificial or auto-feeder, this scanning process all is a sequential scanning process consuming time, because it can only read a mark each time.For guaranteeing to read successfully, barcode reading also requires clog-free sight line and the mark specific orientation with respect to reading machine.Because their optics essence, bar code is to such as humidity, dust, and greasy dirt, or the adaptability of other severe environment is very poor, promptly this type of severe environment can make bar code label smudgy or be damaged.In addition, bar code can only provide limited quantity of information, only limits to the identification of assets usually.At last, using the mark that obtains easily and on personal computer during available printing technique, bar code label more easily is forged.
Summary of the invention
Owing to follow the various restrictions or the disaster of bar code technology and technology, caused that people are used for radio-frequency (RF) identification (RFID) label or interrogator the interest of stock identification and tracking.Rfid system use radiowave replacement light signal transmits the information from assets to the reading machine.The RFID label generally includes an antenna and a wireless communication integrated circuit (IC), or chip.This chip contains the electronic memory circuit that can be read by low power radio waves by long-range reading machine (being also referred to as interrogation responsor).This label also can be by the remote register record.Because it is also readable that this chip both can have been write, therefore, can be in the whole term of life (life cycle) of assets, for example from being fabricated onto the point of sale, with new or side information renewal.
Rfid system has and comprises that some advantages such as can reading a plurality of labels simultaneously, label comprise the label that is blocked or the label in visual line of sight not.And this label is difficult for being damaged than mark and also is difficult for more significantly being forged.In addition, the RFID label can be read in artificial the intervention with intervening under the relevant time-delay situation with this type of of nothing.Under the situation that needs employee's manual search assets such as not hope, in the allocation and transportation or non-existent application of certain assets of record, do not need manual intervention to have special meaning.For example the RFID label can be applicable to such as in the shop, warehouse or goods, or the automated inventory tracking between the time of shipment.In this class embodiment, the RFID label can be associated with each part goods or the assets that will follow the tracks of, be arranged in the antenna of key place on every side then make one or more reading machine can judge continuous or periodicly which label be exist with they present positions with respect to antenna.
Though this technology is useful in some cases, also there are a lot of problems in it.For example, antenna structures copper or other metals are arranged in such as the flatness of understanding deface on the shelf, see it is dissatisfactory from aesthetic angle.In addition, this exposed layout also makes antenna easily because of the layout of the article on the shelf or move and damage.In addition, in retail or commerce were put, client or employee may confound or damage the antenna that exposes.
Have again, near antenna also may receive, the RFID label information of other labels on other shelf or passage for example.In this case, a RFID label may repeatedly be read or register by different antennas, thereby is difficult to judge the position of label.Therefore, a kind of RFID antenna can being combined in decoration or function surface or the shelf is so that the technology that RFID antenna and spur signal are isolated is welcome.
Description of drawings
Read following detailed description and with reference to the accompanying drawings after, aforementioned and other advantages and characteristic of the present invention will be more obvious, in the accompanying drawing:
Fig. 1 is the block scheme of explanation RFID inventory tracking and supply system, and this system comprises according to the RFID antenna of present technique manufacturing and use and RFID barricade;
Fig. 2 is that the ostentatious cross sectional side view according to the built-in printed antenna of present technique is equipped with in explanation;
Ostentatious manufacture method in Fig. 3 A to 3E key diagram 2;
Fig. 4 is an embodiment according to the antenna configuration of the technology of the present invention;
Fig. 5 is another embodiment according to the antenna configuration of the technology of the present invention;
Fig. 6 is that the ostentatious cross sectional side view according to the flush type RF barricade of the technology of the present invention is equipped with in explanation;
Ostentatious manufacture method in Fig. 7 A to 7C key diagram 6;
Fig. 8 is the side view of band antenna shelf, and it comprises and is attached to lip-deep laminate and is attached to the laminate that comprises barricade on the opposed surface;
Fig. 9 is the side view that the shelf unit of Fig. 8 shelf is housed;
Figure 10 is the side view of another kind of arrangement that the shelf unit of Fig. 8 shelf is housed;
Figure 11 is the side view of the another kind of arrangement of a shelf unit, and this shelf unit is equipped with laminate that contains antenna and the laminate that contains barricade.
Embodiment
Assets and tracking of products and management domain obtain great development with technical progress.Particularly, operation artificial and the paper driving has gone out of use to a great extent because of computerize stock and the track database that can follow the tracks of and preserve product information now.Various automatically or the technology of partial automation interface with this class database is provided, thereby can be with such as existing product quantity, position, or information such as price offers database or from wherein taking out.Bar code and bar code reader are examples of this class partial automation technology, and it makes the operator read coding maker on the product and accessing database and convenient transaction, for example shopping by vision.But also there are some shortcomings in optical reader, and these shortcomings comprise that their require accessible sight line between reading machine and sign, to may tamper-indicating or make inadaptability and sign under its ambiguous rugged surroundings be forged easily or distort.In addition, optical reader be by once can only handling a product, thereby makes them not be suitable for extensive or continuous operation, for example continuous stock control.
The another kind of technology that solves a lot of these problems is radio-frequency (RF) identification (RFID), it adopts an a kind of integrated circuit or chip of comprising, the label of an antenna and one comprise that also antenna and circuit are so that read the reading machine or the query device of the electronic memory circuits on the chip.A register that integrates with reading machine can also be arranged, be used for upgrading or rewrite the memory contents on the chip.Memory circuit on the chip can comprise such as product mark, product history, various information such as price.Because the RFID technology is based on radio-frequency technique, so it does not need sight line to be not limited to product of single treatment yet.In fact, utilize the RFID technology, reading machine can be read 10 or more labels simultaneously.These factors together with other factors, are well suited for the RFID technology retail are provided, and store, or the uninterrupted stock control in the shipping work, and can only for example to upgrade inventory database by phased manner in the point of sale opposite with optical technology.
For example, referring to Fig. 1, what illustrate among the figure is to be suitable for retail, warehouse, or the exemplary RFID inventory management system 10 of shipment environment.The label 12 that integrated circuit or chip and label antenna are housed can be arranged and be contained in the product 14 or in the packing of product.Label 12 can be active, i.e. self-energizing, and at this moment, label 12 also comprises the power supply such as battery, also can be passive, in the case, label 12 does not have power autonomous.Passive label 12 can provide the energy by the miniwatt radio frequency electromagnetic field that antenna sends, and here, antenna serves as the energy " carrier " from reading machine to passive label.
The radio frequency of a kind of maskable from the signal of adjacent tags 34 (RF) barricade 32 also can be provided,, may be read by antenna 18 accidentally though this label is outside the zone that antenna 18 should monitor.Therefore, can avoid should be by label 34 repeat counts of another antenna 18 statistics to contiguous for barricade 32.In addition, barricade 32 also can be avoided being belonged to certain place that is close to surface 16 mistakenly with the product of adjacent tags 34, and the ownership of mistake may mislead the staff who plans to place this goods.
About the surface 16 that antenna 18 is housed, the surface 16 can be a combination with decorative surfaces,, is suitable for the surface that publicity is showed that is, high pressure decorative laminate for example, and low-pressure lamination plate (continuous or other forms of), or such as the thermoplastic thin plate of vinyl.Surface 16 also can be functional surface, for example resistant surfaces.For example, referring to Fig. 2, in one embodiment, the high pressure fancy veneer (HPDL) 40 that surface 16 is made up of various tack coats.In this embodiment, first sandwich layer 42 that is printed with antenna 18 thereon is the one decks in the laminate 40.The sandwich layer of indication can be a papery herein, for example dried paper, kraft impregnated with resin or undressed, cardboard or paperboard stock, or synthetic or plastic cement section bar material, for example polyester or nylon.In one embodiment, first sandwich layer 42 is through phenol Chuo plastic resin treatment, the ox-hide scraps of paper in B stage (beta-staged).
Also can comprise one or more layers wearing layer 52, the paper that for example soaks into melamine for example, resists and degrades so that desirable character of surface to be provided, and is wear-resistant, and chemical-resisting is heat-resisting, light, and water, or shock resistance etc.The back can be discussed, and after abundant heating and compacting, wearing layer 52 can become translucent, if decorative layer 50 is arranged, it is exposed fully.In each layer by laminate 40 that antenna 18 is packed into, antenna 18 is not had again to decrease and has been generated the richer ornamental surface that has more aesthetic appearance than lines outside antenna that exposes or the antenna in the outward appearance on surface.
Referring now to Fig. 3,, some steps of making laminate 40 has been described among the figure.In Fig. 3 A, what provide is first sandwich layer 42.Describe antenna 18 among Figure 38 and be printed on first sandwich layer 42, subsequently also may drying or curing processing.The lead-in wire 58 of antenna 18 can be printed onto on the whole edge of first sandwich layer 42, to form edge contact 60.Second sandwich layer 46 can coincide on first sandwich layer 42, covers the antenna 18 except that contact point 60 basically, as shown in Fig. 3 C.Also may occur being attributable to a little surface profile 62 of antenna 18 on second sandwich layer 46, this depends on formed antenna 18 thickness of printing process.Above second sandwich layer 46 the 3rd sandwich layer 48 can also be arranged, as shown in Fig. 3 D, with rigidity and the thickness and the further surface profile of eliminating owing to antenna 18 62 of enhancement layer pressing plate 40.Decorative layer 50 can be arranged in the 3rd sandwich layer 48 above, as shown in Fig. 3 E, perhaps,, then be arranged in above the 3rd sandwich layer 46, to increase surface 46 decorative value if there is not the 3rd sandwich layer 48.Perhaps, if when obtaining required thickness or rigidity be added with more the multicore layer again on the 3rd sandwich layer 48, decorative layer 50 can be arranged in additional one or more layers above sandwich layer.In addition,, then can arrange one or more layers wearing layer 52 in the above if there is decorative layer 50, otherwise on uppermost sandwich layer so that the wear-resisting and anti-performance of degrading to be provided, as shown in Fig. 3 F.
Various laminated stack finish after, as shown in Fig. 3 F, can place them in two flat boards, steel plate for example, between.In 120 ℃ to 160 ℃ (250 to 320) scopes and about 56.24kg/cm then
2To 112.48kg/cm
2Under (800p.s.i to 1600p.s.i) pressure they are handled, handle all resins that the time that is continued should be enough to bonding course pressing plate 40 and each layer of sclerosis infiltration, generally be about 20 minutes to 1 hour.In one embodiment, at 143 ℃ to 154 ℃ (289 to 309) and about 70.3kg/cm
2(1000p.s.i) under the pressure overlapping board was handled 20 to 30 minutes.
Though the embodiment that provides among Fig. 3 has the contact point 60 that is used for connecting reading machine 20 in the edge on surface 40, but can there be this contact point 60 yet, as shown in Figure 2, at this moment, can increase again and form contact hole 44 for one and with the operation in these holes of conductive material filling.Perhaps, can repair or shear layer pressing plate 40, present edge contact point 60 after making shearing, or make outside printed layers 42 is exposed to after shearing, to provide and the electrically contacting of antenna 18.
The antenna 18 that is printed on the antenna sandwich layer 42 can have different shape.For example, as shown in Figure 4, antenna 18 can be opening four side rings that are made of conductive structure 66.In one embodiment, the width of conductive structure 66 is about 6.35mm () and 20.32cm () at 0.25 o'clock at 8 o'clock.In this embodiment, the resonance frequency of antenna 18 is approximately 13.5MHZ.The number of ring and thickness or the width that defines the strip conductor of antenna also can change.In any case these sizes can be and obtain desirable resonance frequency, for example 915MHZ or 2.4GHZ and change and adjust.In fact, the present invention attempts to make antenna to work in this quefrency just.In addition, according to frequency and the application that the antenna and the combination with decorative surfaces product of present technique also can be adapted to other, for example frequency and the application in W1F1 uses.They can be described as " RF " in the particular radio-frequency scope.But no matter how many concrete frequencies is, this type of enforcement of present technique all should be regarded as being included within the notion of the present invention.
In another embodiment, as shown in Figure 5, antenna 18 can be constructed by the opening four side ring shapes that interior and outer conducting structure 76 and 78 are formed.The size of outer conducting structure 78 can be identical with conductive structure shown in Fig. 4 66, and the spacing 80 between inner structure 76 and the external structure 78 is approximately 1.27cm () at 0.5 o'clock.In this embodiment, the resonance frequency of antenna 18 is about 13.5MHZ, although as noted earlier, also can realize other resonance frequencies by the size that changes antenna 18.Though what provide in the Figure 4 and 5 is four side ring shape structures, antenna 18 also can adopt and comprise that circle and V-shape are configured in other interior opening shapes.
Except that with antenna integrated 18 the laminate 40, yet may wish to form combination with decorative surfaces, as the RF screen layer 32 of decorative high-pressure pressing plate form, to use with rfid system.This screen layer 32 can be used to prevent reader antenna, and for example antenna 18 etc. being misread the assorted signal that covers once in a while.For example, in one embodiment, as shown in Figure 6, screen layer pressing plate 100 comprises first sandwich layer 102, is conductive mesh 104, for example woven wire in the above.Spacing in the conductive mesh 104 is enough little of to prevent that the RF ripple from passing through.Thereby can put down and RF label 34 that shielding is contiguous and reader antenna between writing to each other, thereby prevent that puppet from reading and false registration.In one embodiment, employing is that diameter is the woven wire of 0.1397mm (0.0055 o'clock).In another embodiment, gauge of wire is 0.1905mm (0.0075 o'clock).On conductive mesh 104, can also arrange second sandwich layer 106 then, decorate or function surface to form.If desired, can also add some additional sandwich layers again, to form the screen layer pressing plate 100 of desired thickness.
Referring to Fig. 7, provided the step of making screen layer pressing plate 100 among the figure.Provide first sandwich layer 102 among Fig. 7 A.Then, conductive mesh 104 is arranged at above first sandwich layer 102 in Fig. 7 B.In Fig. 7 C, second sandwich layer 106 is arranged at above the woven wire 104 again.Because conductive mesh 104 allows resin flow to cross its hole, so first and second sandwich layers 102 and 106 can be combined together to form the laminate that does not have tack coat under heat and/or pressure.Though only show first and second sandwich layers 102 and 106 among the figure, also can arrange some additional sandwich layers according to the thickness requirement that reaches screen layer pressing plate 100.After the coincided required number of plies and stratum reticulare, illustrate as the front, they can be clipped between two flat boards and carry out hot-pressing processing, to generate required laminate 100.
Screen layer pressing plate 100 can use with any antenna, to shield spuious RFID signal.But in one embodiment, screen layer pressing plate 100 is to use with the laminate 40 that printed antenna 18 is housed, and deposits the surface to form shelf 200 or other, as shown in Figure 8.In the embodiment of Fig. 8, laminate 40 can be decoration or the functional layer pressing plate that sticks on the first surface 122 of shelf 120.Similarly, screen layer pressing plate 100 Pastings are on the opposed surface 124 of shelf 120.Can adopt various bonding agents or epoxy resin that laminate 40 and 100 is pasted on the shelf substrate 126.The laminate 40 of antenna and barricade and shelf 120 that 100 subassemblies are generated are housed respectively can be arranged vertically, and uses at contiguous place and laminate 40 that antenna can not be housed is misread and missed and steps on spuious RFID signal.Perhaps, also can form and not only comprise antenna 18 that is printed on laminate one deck but also the compact laminate that comprises conductive mesh 104.In one embodiment, to about 2.55cm (about 0.08 up to 1.0 o'clock) scope, its conductive mesh 104 is arranged in the suitable distance place apart from antenna 18 to the thickness of compact laminate, makes it can not influence the performance of antenna 18 basically at 2mm.In such an embodiment, compact laminate itself can form a member, for example shelf 120 or be arranged in shelf or the wallboard of wallboard substrate 126 reverse side.
For example, referring to Fig. 9 and 10, provide the side view of the shelf unit 130 of three shelves 120 among the figure.Shelf 120 is equipped with an antenna, as is printed on the antenna 18 that sticks in 120 1 lip-deep laminates 40 of each shelf.Each shelf 120 sticks on the screen layer pressing plate 100 on the opposite side surfaces in addition, make each horizontal shelf 120 can because of screen layer pressing plate 100 be isolated near RF signal on the vertical shelf.As shown in Figure 9, shelf unit 130 can be configured to make the laminate 40 that comprises antenna to be attached on the upper surface of each shelf 120, and the screen layer pressing plate then is attached on the corresponding lower surface.Otherwise the laminate 40 that 130 of the shelf unit shown in Figure 10 are configured to comprise antenna is attached to the lower surface of each shelf 120, and the screen layer pressing plate then is attached on the corresponding upper surface.According to the function of shelf unit, promptly deposit, show etc., can on their exposed surface, arrange decoration and/or protective seam 50,52 in the laminate 40,100 one or both of.In addition, for further reducing the influence of spurious signal, as shown in Figure 9, additional screen layer pressing plate 100 can be attached to such as shelf 120 and paste thereon or on the vertical substrate of its contiguous back wall plate 132 or sidewall paneling 134.
Perhaps, as shown in Figure 11, the laminate 40 that comprises antenna can be attached to vertical substrate, promptly on the back wall plate 132 or sidewall paneling 134 in the shelf unit 130.Can on the opposite sides of vertical substrate, paste one or more layers screen layer pressing plate 100 respectively to reduce influence from the spurious signal of contiguous shelf unit.As shown in Figure 11, screen layer pressing plate 100 can also can not be attached on the upper surface or lower surface of shelf unit 120, to prevent the spurious signal between each shelf unit 120.As discussed above,, that is, deposit, show etc., can on their exposed surface, arrange decoration and/or protective seam 50,52 in the laminate 40,100 one or both of according to the function of shelf unit.
As already mentioned, a lot of versions and material all can be used to form the antenna according to present technique.For example, though previously discussed be the high pressure decorative laminate, present technique also can be applied to the low-pressure lamination plate fully, or is used in the no extrusion process.Similarly, the front is mentioned, and these technology can be used at ornamental overlayer and thin plate, for example fills up in moulding material and the decorative craft commonly usedly, is also referred to as sometimes on other sheetings of " paster " or " paster " and forms antenna.The printing technology that this class antenna can be discussed with the front, or any being suitable for antenna is arranged in decorative laminate, normally should have locational action principle to form in that the back of the body of thin slice is lip-deep.According to the frequency range and the required resistance value of antenna, various technology may require different geometric conditions, ink type, and the quantity and the composition of this class printing ink or printing material.In the work that adds cementing agent such as paster, the tearable thin sheet material of bonding coating with for example paper or plastics and so on can be added on the antenna, required surface will be attached to the paster of antenna, as on shelf or the wallboard time, this layer sheeting can be torn off.
Following example will illustrate the various exemplary embodiments of producing the antenna that is suitable for the different frequency scope with the technology of front.Though a lot of examples all are 13.5MHZ frequency range or target frequency design, similar design also can be used for the frequency of higher frequency, particularly 915MHZ.These higher frequencies are used in particular for the shield technology that illustrated such as the front.Should also be noted that in certain embodiments that by following each example some technology that is adopted has been improved the performance of institute's formation antenna greatly because of the resistivity that has reduced antenna conductive trajectory or leg in the cambium layer pressure plate structure.
Example
According to technology noted earlier, can prepare exemplary antenna with two kinds of methods.At first, all experimental antennas all prepare with template.Form the template of antenna pattern by the kraft that can be attached to kraft from the low viscosity coverage type adhesive tape (seeing www.duckproducts.com) that the DuckProducts of Henkel Consumer Adhesives company of U.S. Ohio state Avon buys with 30 Day Perfect Release titles or soak into phenolic aldehyde.The thickness of adhesive tape is about 0.0056 o'clock 0.142mm in other words.These paper are same type with the paper of making the decorative high-pressure pressing plate.After antenna was covered, the silver-colored electrically conductive ink that can buy from the Noelle Industries of U.S. Massachusetts state Billerica was coated on the antenna area.Then along standardized edge of a knife of whole length of antenna.The edge of a knife is smeared the printing ink of printing ink concentrated part evenly and printing ink is filled up printing ink and lacks in the part, and like this, the entire antenna zone will evenly be covered into the printing ink of 0.142mm thickness by electrically conductive ink.Printing ink tears the template adhesive tape off from paper after evenly spreading out with the edge of a knife.
Have been found that if allow to cover adhesive tape on paper, remain into the printing ink bone dry, then will from kraft, not pull out the paper fiber or not influence that to tear adhesive tape off under the situation of silver-colored electrically conductive ink antenna edge be difficult.Allowing these air dries in air to feel to ink pellet surface no longer feels to be clamminess.Become because of environmental baseline drying time, but generally adopt the sample drying time at one night.
Also can adopt the forced air drying to sample.To what do, undressed kraft adopts the forced air drying to have no problem.But, then must be very careful to the paper use hot blast of handling through phenolic aldehyde, because it may make below the electrically conductive ink or the b-stage of the phenolics of close electrically conductive ink shifts to an earlier date.The potential impact that the phenolics b-stage shifts to an earlier date is, when producing last decorative high-pressure pressing plate, and the bonding that may influence this zone of paper and other layers of kraft paper or soak into the ply of paper of melamine.If fully do not produce high-pressure laminated plate under the dry situation at printing ink, have been found that the trend that printing ink has " oozing out " or flows out, this can cause line edge neat or even scared inadequately.In correct dry sample, in the laminate of completion, can see a small amount of outflow.This outflow is the result that the polymer bonding system that uses in the printing ink causes.If printing ink is done when producing high-pressure laminated plate, then it seems that the polymer bonding system do not cause silver-colored particle to flow out from their original positions.
Also can produce antenna with screen printing.Antenna diagram is that 200,155 and 110 purpose web plates form as available mesh size.The web plate that adopts is made with the polyester net, and they obtain easily, and is also relatively more cheap.Argentiferous printing ink is had an aggressivity slightly to the polyester net, therefore can shorten the serviceable life of web plate.In this was used, if wish to prolong the serviceable life of web plate, it was favourable adopting the web plate of stainless steel manufacturing.At the diaphragm of the standard of use, after exposure and douching technique generate the web plate of imaging, same Noelle Industries conduction is added on the web plate also with the printing ink above the squeegee roll extrusion web plate by printing ink.Available dried kraft and the kraft of handling through phenolic aldehyde receive printing ink.On web plate roll extrusion once with secondary printing ink after, sample just has been prepared into.We find that roll extrusion secondary printing ink can obtain to have enough electrically conductive ink overlayers so that the clear antenna diagram picture of required conductance to be provided.Screen printing is particularly suitable for making the antenna of a plurality of identical physical dimensions.Template is particularly suitable for making the antenna that one or several has the antenna of splendid geometric configuration or has limited budget (budgests).
Can imagine that antenna also can be used additive method, for example wheel revolves intaglio and fast printing method printing.These two kinds of methods all are particularly suitable for making up to a hundred, the goods of up to ten thousand even up to a million identical physical dimensions.
Inkjet printing is an a kind of attractive method of making printed images, because computer control can be printed splendid image one by one, therefore, printing an image is the same easy with a plurality of images that print same geometry.Today, can't buy the industrial ink-jet printer that to use such as the silver-colored printing ink of the band pigment of aforementioned Noelle Industries in general.Though the band pigment ink that has the industrial inkjet printer to use is sold, these granules of pigments are more much smaller than the silver-colored particle in the Noelle Industries printing ink.The density of pigment of industrial inkjet printer ink is also than elemental silver, and the density of every cubic centimetre 10.49 gram is low.Be applicable to silver-colored particle inkjet technology of the present invention though also can't adopt today, can expect that the development of ink-jet technology will make the bigger and denser particle that is similar to silver be added on paper and the polymeric substrates.Polymeric substrates can comprise the Delaware state E.I.Dupont De Nemours ﹠amp such as the U.S.; The registered trademark of Company of Wilmington company is the polyester of Mylar, registered trademark such as the Nova Chemicals Corp ofCalgary company of Canadian Alberta is the tygon of Dylark, polypropylene, cinnamic styrene-maleic anhydride copolymer, the registered trademark of the SheffieldPlastics Inc of subsidiary company of Germany Bayer A.G.of Leverkusen is the regenerated cellulose of Hyzod, acrylic acid derivative, the polymkeric substance of methacrylate and multipolymer, Polyvinylchloride, polycarbonate and polyimide etc.
Example 1
Provide open annular antenna among the figure XX with the template preparation.Monocycle when this antenna is 16 o'clock X16.Conductor 9 line widths of first example are 0.25 o'clock.The phenolic aldehyde of band dry aerial is handled kraft and is pressurizeed under 1000p.s.i. pressure.Treated kraft is sandwiched between two aluminium foils, and aluminium foil then is placed between two corrosion resistant plates.Then this there is five layers sandwich construction to insert between the pressing plate of conventional high-tension laminating machine commonly used in the industry.Pressing plate heats with high-pressure water heating.The temperature of pressing plate is increased to 273 °F rapidly from environment temperature, maintains 273 °F then, and making the total heat time heating time that is higher than environment temperature is 22 minutes.Heat time heating time is when finishing, but still under pressure, pressing plate is cooled to environment temperature.Cooling procedure continues 12 minutes altogether.Sample is taken out from laminating machine,, on the kraft that phenolic aldehyde is handled, take off corrosion resistant plate and aluminium foil from the band antenna.
Example 2
Except that live width is 0.125 o'clock, use the method preparation identical with example 1.
Example 3
Except that live width is 0.50 o'clock, use the method preparation identical with example 1.
Example 4
Except that live width is 1.00 o'clock, is used for example 1 identical method and prepares.
Table 1
DC resistance (Ω) after DC resistance (Ω) pressurization before the example number pressurization
1 16.35 0.926
2 25.8 1.011
3 8.31 0.622
4 4.33 0.375
DC (direct current) resistance before the pressurization is very big, can cause sizable energy loss because of resistance heated in antenna.It has been generally acknowledged that this antenna is bad.DC resistance is relevant with the area of the lateral cross section of antenna.DC resistance value after the pressurization reduces an order of magnitude to I haven't seen you for ages.DC resistance value after the pressurization is approaching or less than 1 ohm, the antenna with this reduction resistance value demonstrates minimum resistance heated performance, thereby the antenna that is generally considered to be, and is especially true when being applied to 13.56MHz.
Be maximum heating Temperature Influence in the explanation pressure process, prepared another group example here.
Example 5
Except that the maximum heating temperature is 239 °F, other preparation technologies are identical with example 1.
Example 6
Except that the maximum heating temperature is 257 °F, other preparation technologies are identical with example 1.
Example 7
Preparation technology is identical with example 1.
Example 8
Except that the maximum heating temperature is 293 °F, other preparation technologies are identical with example 1.
Example 9
Except that the maximum heating temperature is 310 °F, other preparation technologies are identical with example 1.
Table 2
DC resistance (Ω) after DC resistance (Ω) pressurization before the example number pressurization
5 18.8 0.830
6 17.65 0.820
7 16.4 0.926
8 18.9 0.707
9 17.3 0.910
Each the DC resistance value that records before the pressurization is 17.6 ± 1.2 ohm, shows owing to measuring the variation that reason and/or silver-colored printing ink concentration change cause.Shown in the DC resistance that records after the pressurization in the temperature range in whole examples all less than 1 ohm.This temperature range has been reacted the wide condition of work scope that may run into when making the conventional high-tension decorative laminate.Can expect, be that the laminate of the antenna of matrix printing ink demonstrates the RF character that goes out very much with silver under the 13.56MHz frequency.
Be the influence of pressure in the explanation pressure process, one group of example below also having prepared.
Example 10
Except that institute's plus-pressure is the 1000p.s.i., other preparation technologies are identical with example 1.
Example 11
Except that institute's plus-pressure is the 500p.s.i., other preparation technologies are identical with example 1.
Example 12
Except that institute's plus-pressure is the 250p.s.i., other preparation technologies are identical with example 1.
Example 13
Except that institute's plus-pressure is the 1500p.s.i., other preparation technologies are identical with example 1.
Table 3
DC resistance (Ω) after DC resistance (Ω) pressurization before the example number pressurization
10 16.4 0.926
11 27.9 0.991
12 15.5 0.950
13 20.9 0.685
Above the pressure limit studied in each example comprised at the conventional low decorative laminate pressure commonly used in pressurize continuously decorative laminate and the decorative high-pressure pressing plate.Though very high 1500p.s.i. pressure has shown lower resistance value really, each the DC resistance value difference that records after the pressurization is little, and this has shown that this ink set is very suitable for making the antenna that is operated in the 13.56MHz radio frequency under these pressurized conditions.
Antenna example with screen printing production
Antenna is with three kinds of mesh sizes, i.e. 200 orders, and 155 orders and 110 purpose web plates are made.Antenna rolls across on image once with squeegee or the screen plate printing method of secondary is made.Rolling secondary is to wish to be coated with on antenna with more silver-colored printing ink.Make the antenna of " rolling twice ", web plate is not removed from paper rolling between the secondary; Squeegee just drags secondary simply on image area.Behind the screen printing, dry printing ink is pressed into substrate in the laminate then.Pressurized, heated process and pressure all with example 1 in identical.
Table 4
The example grit number rolls across the DC resistance after the preceding DC resistance pressurization of number of times pressurization
14 200 1 440 2.51
15 200 2 353 2.50
16 155 1 62.4 0.980
17 155 2 63.2 0.990
18 110 1 58.5 0.904
19 110 2 50.4 0.745
Above data presentation pressurized conditions to reducing the ohmically benefit of DC in the ink set.Under example 14 conditions, the reduction amplitude of resistance value is above 175 times.It is the required quite low resistance value of 13.56MHz that the silver that 200 purpose web plates provide in antenna is not enough to adapt to frequency of operation.Example among the 16-19 155 orders and the condition that then adopted in the mill of 110 order web plates under can provide and make antenna can be operated in enough silver under the 13.56MHz frequency.In addition, compare, use the less screen printing antenna of striving electrically conductive ink more superior at economic aspect with the antenna of template manufacturing.
Be formed at the example of the silver-colored electrically conductive ink antenna on the non-papery substrate
The antenna of example 20 usefulness template preparation is formed on industrial ethylene resin used in the combination with decorative surfaces industry, promptly on the polyvinyl chloride film.The one side of this vinyl film is printed on ornamental grain pattern.Antenna is with mould printing overleaf or on the unadorned one side.After drying, to handling under the conventional pressurized conditions of vinyl film in example 1.Measure before the pressurization and after DC resistance.
Example 21
Antenna with the template preparation is formed on the industrial film for preparing with Polyvinylchloride and acrylate copolymer, and this material is also referred to as Kydex, i.e. a registered trademark of U.S. Pennsylvania state BloomsburgKleerdex company.This film generally uses in some combination with decorative surfaces is used.Antenna with mould printing on the more smooth one side of film.After drying, the Kydex film is handled under the conventional pressurized conditions of example 1.Measured the DC resistance that pressurizes forward and backward.
Example 21A
Antenna is with 110 order web plates, silver-colored electrically conductive ink screen plate printing method with standard Noelle company is Hyzod in the thick trade name of 6mm, be the registered trademark of the Sheffield Plsatics of subsidiary company of French Bayer A.G.of Leverkusen, the polycarbonate thin plate on prepare.After drying, thin plate is handled under the conventional pressurized conditions of example 1.Measured the pressurization before, after DC resistance.
Table 5
DC resistance (Ω) after DC resistance (Ω) pressurization before the example number pressurization
20 10.56 0.870
21 6.47 1.10
21A 19.8 1.80
When the polycarbonate thin plate had marginal number with (marginal utility), two film substrates were suitable for the antenna that frequency of operation is 13.56MHz.Because silver-colored particle deposition is on the surface of film/thin plate and do not infiltrate in the paper surface of porous,, can form DC resistance value before the lower pressurization so compare with the papery substrate.The example that pressurization back DC resistance approaches to prepare on paper material, this shows that the physics contact between the silver-colored particle is similar.Though the DC resistance with the antenna of Hyzod preparation is unsatisfactory, if need the performance of polycarbonate thin plate in final the application, people still can accept resistance value after this higher pressurization.
The antenna example that on incompatible substrate, prepares
Example 22
Be to prepare antenna on 0.005 o'clock Dylark (face sees before) film with stencil methods at thickness.Dylark is a kind of welcome plastic sheeting, because it is compatible with the phenolic aldehyde layers of kraft paper that is used for making the decorative high-pressure pressing plate and can be closely linked.Authorize people such as Nelson on November 23rd, 1999 and transfer in the U.S. Patent No. 5,989,668 of Premark Holdings the application of Dylark film in laminate has been discussed.Have been found that when sample dries, film has been softened with the electrically conductive ink in all examples in front.After air drying finishes, find below antenna and film on every side shortens or has been out of shape.Antenna is pressurized under example 1 condition.Measured before the pressurization and after DC resistance.
Table 6
DC resistance (Ω) after DC resistance (Ω) pressurization before the example number pressurization
22 26.1 15.32
This example has provided the typical papery DC resistance value before the pressurization, but the value after the pressurization is then unexpected.The DC resistance value is generally considered to be the operating frequency of antenna that is not suitable for 13.56MHz after this quite high pressurization, and it may be because the existence of solvent system and cause that the bonding agent of ink set mixes the result who causes mutually with the Dylark film in the printing ink.Under Dylark and situation that ink set mixes, the separation of silver-colored particle has increased, and the latter then makes the DC resistance of antenna increase.
Be suitable for example on the paper of low pressure applications
Example 23
Two-sided through melamine process, preparation has the antenna that a template is printed on the non-combination with decorative surfaces of the monochrome decoration papery thin plate in B-stage.After drying, sample and example 1 the same pressurization.Measured the DC resistance that pressurizes forward and backward.
Example 24
Without melamine process, or do, wood grain is printed, and decorates on the non-combination with decorative surfaces of papery thin plate and has printed an antenna with the template printing method.After drying, sample and example 1 the same pressurization.Measured the DC resistance that pressurizes forward and backward.
Table 7
DC resistance (Ω) after DC resistance (Ω) pressurization before the example number pressurization
23 34.8 3.91
24 40.6 1.82
The DC resistance value is that to be operated in the tours antenna size institute of 13.56MHz frequency in the example 1 unacceptable after the pressurization of example 23.May in pressure process, there be melamine resin to flow in the silver-colored inked areas.The outflow of producing melamine in high pressure and the low-pressure lamination plate process is as known in the art.If melmac mixes with silver-colored printing ink, can produce the antenna finished product of high electrical resistance value.Melmac has good insulating property (properties) usually, and therefore, conductive silver particle is mixed in the resin of insulation can not produce low-resistance product.
The DC resistance value can not be made the size and the good antenna that is operated in 13.56MHz in the example 1 after the pressurization in the example 24.Used doing in this example, or undressed paper is porous (loosen), the silver-colored particle of the part in the electrically conductive ink may infiltrate in the paper, and in fact this promoted the separation of silver-colored particle, thereby increased resistance value.
Though the present invention can have various improvement and other forms, what the accompanying drawing neutralization had described in detail around here then is the some specific embodiments that provide with exemplary forms.But, should be appreciated that the present invention there is no the intention that is limited to disclosed concrete form.On the contrary, the present invention should be contained and falls into the spirit of the present invention that defined by following appended claims and all modifications in the category, equivalent, and alternate embodiment.
Claims (16)
1, be used for the system that holds on a correspondence with the RFID label, this system comprises:
A laminate structure, this laminate structure comprises:
A substrate layer, this substrate layer are the phenolic impregnated layer;
The conductive antenna that on substrate layer, prints; With
Cover the additional substrate layer of one deck at least on the antenna, this additional substrate layer is the melamine impregnate layer;
Be configured to the transceiver that holds on a correspondence by antenna and RFID label; And
Being configured to provides data for the RFID label or from the one or more computerized database of RFID tag extraction data by transceiver.
2, the system as claimed in claim 1, wherein, antenna is arranged on the substrate layer with mould printing or screen plate printing method.
3, the system as claimed in claim 1, wherein, antenna is the monocycle antenna that comprises the wall scroll conductive material path that is arranged on the substrate layer.
4, the system as claimed in claim 1, wherein, antenna is the multi-loop antenna that comprises at least two parallel electrically conductive material paths that are arranged on the substrate layer.
5, the system as claimed in claim 1, wherein, substrate layer and at least one deck additional substrate layer form the decorative high-pressure pressing plate.
6, the system as claimed in claim 1, wherein, substrate layer is the vinyl plate.
7, the system as claimed in claim 1, wherein, antenna configuration becomes to transmit and receive the signal of frequency 13.5MHz.
8, the system as claimed in claim 1, wherein, antenna configuration becomes to transmit and receive the signal of frequency 915MHz.
9, a kind of multilayer shelf is used for holding on a correspondence with the RFID label, and it comprises:
The shelf substrate; And
Be attached to the ground floor pressure plate structure of shelf substrate first surface,
Wherein, the ground floor pressure plate structure comprises:
A substrate layer, this substrate layer are the phenolic impregnated layer;
The conductive antenna that on substrate layer, prints; With
Cover the additional substrate layer of one deck at least on the antenna, this additional substrate layer is the melamine impregnate layer.
10. multilayer shelf as claimed in claim 9, further comprise the second layer pressure plate structure that is attached to shelf substrate opposed surface, wherein, this second layer pressure plate structure comprises first sandwich layer, conductive mesh and second sandwich layer bonding with this first sandwich layer, and this conductive mesh is between first sandwich layer and second sandwich layer.
11. multilayer shelf as claimed in claim 10, wherein, the spacing in the conductive mesh is enough little of to prevent that rf wave from passing through.
12. multilayer shelf as claimed in claim 9, wherein, the antenna received RF signal.
13. multilayer shelf as claimed in claim 9, wherein, antenna configuration becomes to transmit and receive the signal of frequency 13.5MHz.
14. multilayer shelf as claimed in claim 9, wherein, antenna configuration becomes to transmit and receive the signal of frequency 915MHz.
15. a method of making laminate structure, wherein, this laminate structure is used for holding on a correspondence with the RFID label, and this method comprises:
Printing conductive antenna on the phenolic impregnated layer;
On the phenolic impregnated layer, arrange one deck melamine impregnate layer at least;
Give heating of multilayer board one or many and pressurization, so that each layer bonded together mutually, antenna then is clipped in the middle of them.
16. method as claimed in claim 15 wherein, before being arranged in the melamine impregnate layer on the phenolic impregnated layer, is solidified antenna.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US46896703P | 2003-05-08 | 2003-05-08 | |
| US60/468,967 | 2003-05-08 | ||
| US10/797,320 | 2004-03-08 |
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| CN1694112A CN1694112A (en) | 2005-11-09 |
| CN100535920C true CN100535920C (en) | 2009-09-02 |
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| CNB2004100372797A Expired - Fee Related CN100535920C (en) | 2003-05-08 | 2004-04-30 | Decoration surface covering with burried radio-frequency antenna and radio shielding and manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1914832A1 (en) * | 2006-10-17 | 2008-04-23 | Laird Technologies AB | A method of production of an antenna pattern |
| DE102006061798A1 (en) * | 2006-12-21 | 2008-06-26 | Simons, Gisela | Method for applying characteristic of substrate surfaces with the help of transfer method, involves imprinting of release carrier foil and transfer layer has radio-frequency identification kit |
| CN101430772B (en) * | 2007-11-06 | 2011-06-29 | 台湾积层工业股份有限公司 | Packaging material equipped with radio frequency recognition volume label and method for producing the same |
| CN102295095A (en) * | 2010-06-23 | 2011-12-28 | 台湾积层工业股份有限公司 | Packaging bag with radio frequency identification capability, and manufacturing method for the same |
| US10440828B2 (en) * | 2017-04-14 | 2019-10-08 | The Diller Corporation | Integrated electrical component within laminate |
| CN107505920A (en) * | 2017-07-31 | 2017-12-22 | 厦门乐石信息科技有限公司 | A kind of bathroom cabinet production and processing method and system based on bar code |
| FR3122948A1 (en) * | 2021-05-12 | 2022-11-18 | Axem Technology | Antenna manufacturing process for RFID identifiers |
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