CN110110836A - Radio frequency anti-theft tag - Google Patents
Radio frequency anti-theft tag Download PDFInfo
- Publication number
- CN110110836A CN110110836A CN201910417726.8A CN201910417726A CN110110836A CN 110110836 A CN110110836 A CN 110110836A CN 201910417726 A CN201910417726 A CN 201910417726A CN 110110836 A CN110110836 A CN 110110836A
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- CN
- China
- Prior art keywords
- layer
- wax
- conductive coil
- radio frequency
- dielectric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
- G06K19/07722—Physical layout of the record carrier the record carrier being multilayered, e.g. laminated sheets
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The invention discloses a kind of radio frequency anti-theft tag, including surface substrate layer, upper layer and lower layer conductive coil is arranged below in surface substrate layer, adhesive layer is equipped with below underlying conductive coil, dielectric is equipped between upper layer and lower layer conductive coil, which is characterized in that the dielectric is wax layer.The present invention uses dielectric instead wax, improve the Q value of label, as long as and being added when processing label, it does not need buying CPP film and carries out complicated processing technology, reduce processing cost, and compared with the prior art, it is more environmentally friendly using the label after wax, since the wax of liquid condition can freely carry out thickness adjusting, the thickness of effective abstract factory according to processing technology.
Description
Technical field
The present invention relates to a kind of radio frequency anti-theft tags, belong to electronic label technology field.
Background technique
Currently, electronic tag is used for various aspects, its corresponding label is all carried on commodity, some use mark, some
Then for antitheft, for example, radio frequency anti-theft tag.Anti-theft tag is respectively and fixedly provided in various products in shop, when passing through antitheft inspection
It makes an inventory of or when region, can check the presence of the anti-theft tag.Radio frequency anti-theft tag includes surface substrate, is set below surface substrate
There is double layer of metal foil coil, separated between double layer of metal foil coil by dielectric, is connected between each layer by adhesive
Together, the bottom surface of metal foil coil is equipped with adhesive layer, for being fixed on product.Examine a radio frequency anti-theft tag whether excellent
It is good, it is to be distinguished by the height of its Q value, Q value is higher, then illustrates the better of the label.(Q value is to measure inductor
The major parameter of part, when referring to that inductor works under the alternating voltage of a certain frequency, the induction reactance and its equivalent loss that are presented
The Q value of the ratio between resistance, inductor is higher, and loss is smaller, and efficiency is higher.)
At present used in dielectric be resin, CPP film (CPP film, that is, cast polypropylene film, it is also referred to as non-stretched
Polypropylene film) or common plastics due to factors such as cost, efficiency largely use CPP film, by CPP Film laminated
Between double layer of metal foil coil, processing technology is complicated, and CPP can generate in process and be detained a large amount of electrostatic, holds
Easily RF tag is caused to be killed by electrostatic during post-production；CPP film belongs to Plastic, raw by chemical industry mode
It produces, for environmental angle, belongs to not environmentally；CPP film needs are purchased from businessman, higher cost.
Summary of the invention
The technical problem to be solved by the present invention is solving the problems, such as how to improve radio frequency anti-theft tag Q value.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of radio frequency anti-theft tags, including table
Face substrate layer, surface substrate layer are arranged below upper layer and lower layer conductive coil, are equipped with adhesive layer below underlying conductive coil, up and down
Dielectric is equipped between two layers of conductive coil, which is characterized in that the dielectric is wax layer.
Preferably, the conductive coil is metal foil coil.
Preferably, Nian Jie by adhesive between the surface substrate layer and Upper conductive coil；Upper layer and lower layer are conductive
It is Nian Jie by adhesive respectively between coil and dielectric.
Preferably, the fusing point of the wax layer is 40 DEG C -200 DEG C.
Preferably, the wax layer includes that paraffin, microwax, PE wax, synthetic wax, animals and plants wax or multilayer containing wax are exhausted
Edge dielectric structure or mixture.
Dielectric in the present invention improves the Q of label using wax, the multilayer insulation dielectric structure or mixture of the content of wax
Value, as long as and be added when process label, do not need buying CPP film and carry out complicated processing technology, reduction
Processing cost, and compared with the prior art, it is more environmentally friendly using the label after wax, since the wax of liquid condition can be according to adding
Work technique freely carries out thickness adjusting, the thickness of effective abstract factory.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of radio frequency anti-theft tag；
Fig. 2 is a kind of decomposition diagram of radio frequency anti-theft tag.
Specific embodiment
In order to make the present invention more obvious and understandable, hereby with preferred embodiment, and attached drawing is cooperated to be described in detail below.
The present invention is a kind of radio frequency anti-theft tag, as shown in Figure 1 and Figure 2 comprising surface substrate layer 1, surface substrate layer 1
Upper layer and lower layer conductive coil is arranged below, adhesive layer 5 is equipped with below underlying conductive coil, is set between upper layer and lower layer conductive coil
There is dielectric, it is Nian Jie by adhesive between surface substrate layer 1 and Upper conductive coil；Upper layer and lower layer conductive coil and insulation
It is bonded respectively by adhesive between medium.Conductive coil is metal foil coil, i.e., Upper conductive coil is the first tinsel cord
Circle 2, underlying conductive coil are the second metal foil coil 4.Dielectric is wax layer 3, and wax layer 3 is by adhesive respectively with upper and lower two
Layer conductive coil bonding.Wax layer 3 includes paraffin, microwax, PE wax, synthetic wax's (coal takes off wax, Fischer-Tropsch wax), animals and plants wax or contains
The multilayer insulation dielectric structure or mixture of wax.The fusing point of wax layer 3 is 40 DEG C -200 DEG C.When processing, wax layer 3 is liquefied viscous
It closes between two layers of conductive coil.
Quality factor can be write as the energy consumed in the energy/circuit a cycle stored in Q=2pi* circuit again；
The relationship of passband BW and resonance frequency w0 and quality factor q are as follows: BW=w0/Q, showing Q, then passband is narrow greatly, Q
Small then pass band.
The calculation formula of Q value are as follows: Q=ω L/R=1/ ω RC；
Wherein:
Q is quality factor；
Supply frequency when ω is circuit resonance；
L is inductance；
R is the resistance of string；
C is capacitor；
Q value is quality factor, it is active power and total work power ratio；
The method being coated with respectively with roller bearing, is applied to metal foil surface for binder, wax and dried.
It is the microwax that fusing point is 40 DEG C in the present embodiment, used in wax layer 3.
Conventional products Q value in the market is 60 ± 5, and Q value of the invention is the size of 95 ± 5, Q value size and metal antenna
Also there is relationship, it is general directly proportional.Citing is 40mmX40mm size.
Table is provided according to the manufacturing method of patent CN200410059023- resonant and the embodiment of resonant to say
It is bright.
| Comparative example 1 | Comparative example 2 | The present invention | |
| Material | Aluminium | Aluminium | Aluminium |
| Thickness (front/reverse side) | 40μm/40μm | 50μm/10μm | 50μm/50μm |
| Dielectric | Resin coating film | Polyethylene film | Wax film |
| L (inductance) | 0.154μH | 3.06μH | 0.08741μH |
| Coil resistance | 0.03976mΩ | 0.6860mΩ | 0.046mΩ |
| Measured value | 60 | 58 | 98 |
Embodiment 2
It is 170 DEG C of fusing point of polypropylene wax in the present embodiment, used in wax layer 3.
Other are same as Example 1.
Claims (5)
1. upper layer and lower layer conductor wire is arranged below in a kind of radio frequency anti-theft tag, including surface substrate layer (1), surface substrate layer (1)
It encloses, is equipped with adhesive layer (5) below underlying conductive coil, dielectric is equipped between upper layer and lower layer conductive coil, feature exists
In the dielectric is wax layer (3).
2. a kind of radio frequency anti-theft tag as described in claim 1, which is characterized in that the conductive coil is tinsel cord
Circle.
3. a kind of radio frequency anti-theft tag as described in claim 1, which is characterized in that the surface substrate layer (1) and upper layer
It is bonded between conductive coil by adhesive；It is Nian Jie by adhesive respectively between upper layer and lower layer conductive coil and dielectric.
4. a kind of radio frequency anti-theft tag as described in claim 1, which is characterized in that the fusing point of the wax layer (3) is 40 DEG C-
200℃。
5. a kind of radio frequency anti-theft tag as described in claim 1 or 4, which is characterized in that the wax layer (3) include paraffin,
Microwax, PE wax, synthetic wax, animals and plants wax or multilayer insulation dielectric structure or mixture containing wax.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910417726.8A CN110110836A (en) | 2019-05-20 | 2019-05-20 | Radio frequency anti-theft tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910417726.8A CN110110836A (en) | 2019-05-20 | 2019-05-20 | Radio frequency anti-theft tag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110110836A true CN110110836A (en) | 2019-08-09 |
Family
ID=67491043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910417726.8A Pending CN110110836A (en) | 2019-05-20 | 2019-05-20 | Radio frequency anti-theft tag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110110836A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1564648A (en) * | 1999-09-14 | 2005-01-12 | 株式会社三宅 | Process for producing resonant tag and resonant tag |
| CN102339402A (en) * | 2011-09-15 | 2012-02-01 | 哈尔滨大东方卷烟材料科技开发有限责任公司 | Method for manufacturing radio frequency tags with hot and cold stamping technology |
| CN103543175A (en) * | 2013-07-16 | 2014-01-29 | 西安电子科技大学 | LC (Inductance-Capacitance) passive wireless micro humidity sensor applied to terminal of Internet of Things |
| CN104050499A (en) * | 2014-06-24 | 2014-09-17 | 中国科学院微电子研究所 | High-frequency radio frequency identification label |
| CN209842675U (en) * | 2019-05-20 | 2019-12-24 | 上海优比科电子科技有限公司 | Radio frequency anti-theft label |
-
2019
- 2019-05-20 CN CN201910417726.8A patent/CN110110836A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1564648A (en) * | 1999-09-14 | 2005-01-12 | 株式会社三宅 | Process for producing resonant tag and resonant tag |
| CN102339402A (en) * | 2011-09-15 | 2012-02-01 | 哈尔滨大东方卷烟材料科技开发有限责任公司 | Method for manufacturing radio frequency tags with hot and cold stamping technology |
| CN103543175A (en) * | 2013-07-16 | 2014-01-29 | 西安电子科技大学 | LC (Inductance-Capacitance) passive wireless micro humidity sensor applied to terminal of Internet of Things |
| CN104050499A (en) * | 2014-06-24 | 2014-09-17 | 中国科学院微电子研究所 | High-frequency radio frequency identification label |
| CN209842675U (en) * | 2019-05-20 | 2019-12-24 | 上海优比科电子科技有限公司 | Radio frequency anti-theft label |
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