Special membrane and method for manufacturing radio-frequency label antenna

Abstract

The invention relates to a special film used for fabricating FR tag antenna, which comprises a substrate, a parting material layer and a metal layer, and the method to fabricate an FR tag antenna with the special film. The method includes the following steps: A)printing: take adhesives as imaging material to develop an FR tag antenna pattern on the metal layer of the special film; B)etching: dissolve the unprinted part of the metal layer of the special film with etching liquid to form a metal antenna pattern; C) transfer printing: press a printing stock and the special film tightly together and then separate the two so that the metal antenna pattern can be transferred to the surface of the printing stock. The method is simple in technique, high in efficiency and low in cost; the printing stock can be chosen freely; therefore the special film and the method can be applied to manufacture various all-band RFID antennas with high precision, low impedance, good conductivity and thick metal film.

Description

technical field [0001] The invention relates to a special film and a method for making a radio frequency tag antenna. Background technique [0002] Radio frequency tag technology (RFID) has many advantages such as high precision, strong adaptability to the environment, long reading distance, strong anti-interference, and convenient application. No. US5206626, US5448110 and US5497140) all have extensive application potential, it will relate to every aspect of people's daily life, has huge market value. However, due to the complicated manufacturing process of the current RFID tags and relatively high manufacturing costs, especially the manufacturing of its key component, the RFID antenna, there are still many technical constraints. Therefore, the RFID tag technology has not been popularized as it should be. [0003] The following are common technical solutions of the prior art. [0004] Solution 1. Traditional etching-removal method to make RF antenna [0005] Firstly, doub...

AI Technical Summary

Problems solved by technology

This process first etches the metal film and then transfers it by cold stamping. Although the thickness of the metal film layer is increased in the whole process, printing corrosion solution and registration are added, which increases the difficulty of operation and reduces the processing speed; at the same time, due to printing corrosion The amount of liquid is small, so the thickness of the metal film that can be processed is limited to within 0.25 μm, which limits the scope of use of the antenna

[0015] Option 3 is to post-process the post-stamping products and introduce a die-cutting process, which can handle thick film layers better and expand the selection range of antenna substrates, but for complex antenna patterns, the die-cutter is not easy to process , and the processing speed is also slower

[0016] Scheme 4 is similar to Scheme 3, the difference is that this technology is die-cutting first and then hot stamping, so it also has the disadvantages of difficult processing of die-cutting knife and slow processing speed

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