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RF tag and method for producing same

A label and prepreg technology, used in printed circuit manufacturing, chemical instruments and methods, printed circuits, etc., and can solve problems such as misoperation of electronic equipment

Inactive Publication Date: 2011-07-13
NOF CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Transmission losses in circuits in contact with insulating materials include conductor losses determined by the shape of the antenna circuit, skin resistance, characteristic impedance, etc., and dielectric losses determined by the dielectric properties of the dielectric layer around the circuit, especially at high frequencies Released as a dielectric loss in the circuit, it becomes the cause of misoperation of electronic equipment

Method used

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  • RF tag and method for producing same
  • RF tag and method for producing same
  • RF tag and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0080] Embodiments will be further specifically described below by citing synthesis examples, examples and comparative examples. First, the evaluation method of the RF tags used in each example will be described.

[0081] 【Environmental Resistance Evaluation】

[0082] The judgment of environmental resistance is carried out through heat cycle test and high temperature and high humidity resistance. The form of the sample used for evaluation is as follows.

[0083] RF tag: length 90mm, width 50mm and thickness 4mm.

[0084] Antenna circuit 10: length 90mm and width 40mm.

[0085] Metal foil M: length 90mm and width 55mm.

[0086] 【Heat cycle resistance】

[0087] The thermal cycle resistance was judged by putting the RF tag sample into the thermal cycle resistance evaluation device. The number of cycles when delamination was observed by visual inspection of the RF tag, and the rate of change from the initial value of the resistance value between antenna circuits and the resi...

Synthetic example 1

[0094] Synthetic example 1 manufacture of graft copolymer

[0095] After adding 8500 g of pure water to a stainless steel autoclave with an internal volume of 20 liters, 750 g of a 1% by mass aqueous solution of polyvinyl alcohol was dissolved as a suspending agent. 3500 g of polypropylene described below was added thereto, and stirred and dispersed. Separately, 10.0 g of benzoyl peroxide as a radical polymerization initiator and 37.5 g of tert-butylperoxymethacryloyloxyethyl carbonate as a radical copolymerizable organic peroxide were dissolved in 1080 g of monofunctional Styrene as an aromatic vinyl monomer and 300 g of divinylbenzene as a bifunctional aromatic vinyl monomer were charged into the autoclave and stirred.

[0096] Then the temperature of the autoclave was raised to 85-95°C and stirred for 2 hours to impregnate divinylbenzene and styrene containing benzoyl peroxide and tert-butyl peroxymethacryloyloxyethyl carbonate. into polypropylene. Then lower the tempera...

Synthetic example 2～14

[0103] Synthesis example 2~14, the manufacture of graft copolymer

[0104] Using the same method as that shown in Synthesis Example 1, aromatic vinyl monomers were graft-polymerized to various main chain structures to obtain graft copolymers of Synthesis Examples 2 to 14. Their composition is shown in Table 1.

[0105]

[0106] The abbreviations in Table 1 are as follows.

[0107] PP: Polypropylene (trade name "SunAllomer-PM671A", manufactured by SunAllomer Co., Ltd., MFR: 7g / (10min))

[0108] St: Styrene

[0109] DVB: divinylbenzene

[0110] TPX: poly(4-methyl-1-pentene) (trade name "TPX RT18", manufactured by Mitsui Chemicals Co., Ltd., MFR: 26 g / (10 min))

[0111] TOPAS6013: Ethylene-norbornene copolymer (trade name "TOPAS 6013", manufactured by Polyplastics Co., Ltd., MFR: 14g / 10min)

[0112] TOPAS6015: ethylene-norbornene copolymer (trade name "TOPAS 6015", manufactured by Polyplastics Co., Ltd., MFR: 4 g / 10min)

[0113] PPE: polyphenylene ether (trade name "lupi...

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Abstract

The present invention provides an RF tag which comprises a prepreg plate having a first dielectric layer (20a), and prepreg layers (30a, 30b) respectively arranged on the two major surfaces of the first dielectric layer (20a). The first dielectric layer (20a) is composed of a graft copolymer which is obtained by polymerizing 15 to 40 parts by mass of an aromatic vinyl monomer (b), which contains 70 to 95% by mass of a monofunctional aromatic vinyl monomer (b1) and 5 to 30% by mass of a bifunctional aromatic vinyl monomer (b2), onto 60 to 85 parts by mass of a polymer (a), which is obtained from an alpha-olefin monomer or a chain conjugated diene monomer. Each of the prepreg layers (30a, 30b) is composed of a glass fabric base impregnated with an epoxy resin. An antenna circuit (10) and a metal foil layer (40) are respectively bonded to the prepreg layers (30a, 30b) of the prepreg plate by thermal compression bonding.

Description

technical field [0001] The invention relates to a non-contact connection type RF tag and a manufacturing method thereof. More specifically, it relates to a non-contact connection type RF tag formed by thermally bonding layers through a prepreg sheet and a manufacturing method thereof. Background technique [0002] With the rapid development of the information society, the frequency bands of signals used for communication equipment and the like are gradually shifting to high-frequency bands such as ultra-short wave (UHF) and centimeter wave (SHF) bands, which allow higher density transmission of information. The same is true in the RFID (Radio Frequency Identification) system that has received widespread attention recently. The RFID system refers to sending and receiving information by reading and writing data on a storage medium that can read and write information in a non-contact state. With the advancement of semiconductor technology, the storage medium used as RF tags i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/077B32B15/092G06K19/07H01Q1/38
CPCB32B27/12H05K2203/1168H05K1/0366B32B15/14H01Q1/2225H05K1/036G06K19/07749B32B27/04B32B17/02B32B5/28H05K2201/10098B32B27/32B32B27/28B32B15/092G06K19/07H01Q1/38
Inventor 久保田和宏大田利博水口胜信
Owner NOF CORP