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A kind of plastic sheet for electronic label and preparation method thereof

A technology of electronic tags and plastic sheets, which is applied in metal processing equipment, transportation and packaging, etc., can solve the problems of expensive sintered ferrite sheets and limit the wide application of electronic tags, and achieve improved reading sensitivity and good flexibility , High production efficiency and high yield

Active Publication Date: 2018-06-26
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of soft magnetic alloy plastic sheet and sintered ferrite sheet is relatively expensive, which limits the wide application of electronic tags

Method used

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  • A kind of plastic sheet for electronic label and preparation method thereof
  • A kind of plastic sheet for electronic label and preparation method thereof
  • A kind of plastic sheet for electronic label and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A plastic sheet for an electronic label, comprising 100 parts by weight of NiCuZn ferrite powder: 10 parts of solvent; 5 parts of binder; 3 parts of plasticizer; wherein, the NiCuZn ferrite powder is sintered into a magnetic The final nickel-zinc ferrite magnetic powder is used as raw material, and the nickel-zinc ferrite material is pressed into a magnetic ring with an outer diameter of 20mm and an inner diameter of 10mm. When testing, the performance requirements are: the frequency is 13.56MHz, and the magnetic permeability of the magnetic ring: 150-500 , The loss is 10-50.

[0028] The solvent in this embodiment is acetone; the binder is polyvinyl butyral; the plasticizer is dibutyl phthalate.

[0029] The preparation method of the plastic sheet for the above-mentioned electronic label comprises the following steps:

[0030] 1) Preparation of NiCuZn ferrite powder: use sintered nickel-zinc ferrite powder as the raw material, and press the nickel-zinc ferrite materia...

Embodiment 2

[0036] A plastic sheet for an electronic label, comprising 100 parts by weight of NiCuZn ferrite powder: 30 parts of solvent; 25 parts of binder; 15 parts of plasticizer; wherein, the NiCuZn ferrite powder is sintered into a magnetic The final nickel-zinc ferrite magnetic powder is used as raw material, and the nickel-zinc ferrite material is pressed into a magnetic ring with an outer diameter of 20mm and an inner diameter of 10mm. When testing, the performance requirements are: the frequency is 13.56MHz, and the magnetic permeability of the magnetic ring: 150-500 , The loss is 10-50.

[0037] In this embodiment, the binder is polyurethane; the plasticizer is trioctyl trimellitate; the solvent is a mixture of ethanol and toluene, forming a binary azeotropic solvent.

[0038] The preparation method of the plastic sheet for the above-mentioned electronic label comprises the following steps:

[0039] 1) Preparation of NiCuZn ferrite powder: use sintered nickel-zinc ferrite magne...

Embodiment 3

[0045] First, the high-performance NiCuZn magnetic powder after burning into magnets is passed through a 100-mesh sieve, and 100 parts by weight of the magnetic powder is taken, mixed with 15 parts by weight of a solvent (ethanol and toluene or ethanol and xylene binary mixture), and 10 parts by weight of water-soluble Polyurethane and 5 parts by weight of DBP are uniformly dispersed and poured into the ball mill tank, and the slurry obtained after ball milling and mixing for 6 hours according to the above ratio is set to a casting thickness of 0.2mm, and the slurry is dried at 40°C after tape casting. A ferrite green sheet with a thickness of 0.2mm was prepared, and the ferrite plastic sheet was cut into small pieces of 100x100mm, and rolled by a round roller press. After rolling, the thickness was 0.15mm, and the compression amount was 25%. The complex magnetic permeability of the final magnetic isolation material is tested by an Agilent 4991A impedance meter. When the freque...

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Abstract

The invention discloses a plastic sheet for an electronic label, which comprises 100 parts by weight of NiCuZn ferrite powder: 10-30 parts of a solvent; 5-25 parts of a binder; and 3-15 parts of a plasticizer. The invention also discloses a preparation method of the plastic sheet for the electronic label. The plastic sheet for electronic tags prepared by the present invention has a certain magnetic permeability in the high frequency range, and can effectively concentrate the transmission signal into the plastic sheet. At the same time, the plastic sheet for electronic tags has an extremely low virtual permeability. In order to realize the transmission signal without loss through the inside of the plastic sheet, thereby effectively avoiding the interference of the metal on the electromagnetic signal, and effectively increasing the sensing distance of the signal.

Description

technical field [0001] The invention belongs to the field of electronic material manufacturing, and in particular relates to a plastic sheet for an electronic label and a preparation method thereof. Background technique [0002] As a data carrier, electronic tags can play the role of identification, item tracking, and information collection. The RFID system composed of electronic tags, readers, antennas and application software is directly connected to the corresponding management information system. Every item can be accurately tracked. This comprehensive information management system can bring many benefits to customers, including real-time data collection, secure data access channels, and all product information can be obtained offline, etc. Wait. In foreign countries, RFID technology has been widely used in many fields such as industrial automation and commercial automation. However, with the wide application of electronic tags, sometimes it is unavoidable to be attac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F3/22
CPCB22F3/22B22F1/10
Inventor 王媛珍於扬栋单震苏艳峰吴关健包宇航
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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