Flexible wiring with the most exergy paste and fil

2022-07-29
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Using paste and film to realize flexible wiring

the method to improve wiring elasticity is not only conductive knitted materials. It is also a good way to make the film and paste with strong elasticity have conductivity, which has been highly affirmed by the 5th national random inspection group. By pasting these materials on clothes, wearable terminals that are comfortable to wear can be realized

for example, cemedine, an adhesive manufacturer, proposes to use conductive adhesive as wiring for wearable terminals. The low temperature hardening conductive adhesive "cemedine sxeca" series sold by the company is adopted

this series of adhesives has good softness and high durability to temperature changes. In the past, it has been used as a substitute for soldering tin. In recent years, in order to meet the requirements of "drawing circuit", the company has gradually improved and increased the product line of conductive paste

like the elastic adhesive "super X" produced by the company, the conductive paste can directly draw circuits on cloth, silicone rubber, paper and various kinds of films for high-end products without heating treatment. Since the object does not need surface treatment and the slurry is supplied in liquid form, the methods of dispensing and printing can be adopted

at the exhibition, the company showed the clothing with LED chips installed on the cloth by directly drawing circuits with conductive paste (Fig. *3). Luminous clothing has already been put into use in amusement parks, dramas and other fields. Most of these clothes lay wires inside, and most of them lost the softness of the cloth. The use of paste will not damage the softness of the cloth, and the circuit can be simply drawn by "drawing lines"

figure: clothing using cemedine conductive adhesive. The wiring is formed by coating conductive paste with excellent elasticity on the fabric

1 but after the user sets the test data, the appearance of the

*3 clothes is kimono, and the video of Japanese dancer Lanxiang fujiama dancing in clothes was broadcast on the spot

Toyo textile reference exhibited the thin-film conductive material "cocomi (Xinmei)". The material was released in August, 2015. Its thickness is only about 0.3mm. It is characterized by good elasticity and can be stretched to 2 times at most. It is expected that the clothing can be used to measure the body information of ECG, and the samples of clothing are displayed on site

cocomi's structure is that the insulating sheet is clamped on both sides of the polymer film, and the polymer film has conductivity by adding silver. Because of the low resistance, the measurement accuracy can be higher than that of other wearable electrode materials. "The surface resistance indicated in the specification is less than 2 Ω□, and the actual resistance is about 1 Ω□" (commentator of the company)

moreover, this material is not only thin and elastic, but also can realize the integration of wiring and electrode by using the part without insulating sheet as the electrode. Even if it is pasted on the clothing for detecting human body information, it will not feel strange

in terms of durability, the test products can still work normally after 20 times of hand washing. In the future, the company will continue to verify for production to further improve the durability. It is currently working with several companies to make preparations. "It will be put into operation from autumn to winter of 2017 at the earliest"

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