The application of electronic tags and electronic tickets has been constantly growing. From an international perspective, on June 14, 2003, Wal-Mart announced that January 1, 2005, the deadline for suppliers to complete RFID innovation work. To this day, although this goal has not been achieved, Wal-Mart has not stopped this pace. In addition, a large number of cities in Europe and North America are also using one-time bus subway tickets. In China, on the one hand, the application of one-time electronic tickets is indeed increasing. Like the tickets for the 2008 Beijing Olympic Games and the RFID anti-counterfeiting ticketing of the Guangzhou-Shenzhen Railway; on the other hand, many demonstration projects of electronic tags have emerged. The more successful case here is the use of luggage tags at Hong Kong Airport.
At present, the whole country is advocating environmental protection. Then, we need to consider the environmental protection of one-time electronic tickets. In terms of the number of electronic tags and cards used in existing projects, each IC card is 0.9mm thick, and 1 million cards are 0.9km thick. 20.26 million cards have been issued for the Beijing Transit Subway Card, which can be stacked around the Beijing Metro Line 2 once. The Guangzhou-Shenzhen Railway ticket is 0.3mm thick, 25 million per year, stacked 7.5km per year. Olympic tickets are 0.4mm thick, a total of 13.4 million, stacked up to 5.3km. For one-time applications, you need to consider electronic tags, Environmental issues of electronic tickets.
Let's look at environmental protection issues from multiple perspectives: from the perspective of manufacturing and destruction, the manufacture of electronic ticket antennas is obtained by printing, and there is no waste water or exhaust emissions in the production process. And after the electronic ticket is used, it can be destroyed by incineration. No toxic gases are produced during the incineration process. From the point of view of raw materials, the reuse problem, after burning paper-based electronic tickets, silver powder can be recovered, and the recovery efficiency can reach 70%. Therefore, the advantages of paper-based electronic tickets are very obvious.
The following describes the material composition of Yashi Tongfang paper-based electronic tickets. The material composition of the e-ticket has three main parts:
——Paper, usually offset paper, accounts for 95%.
——Silver paste, the main materials are silver powder and resin, accounting for 4.9%.
——Chip, the main material is silicon, accounting for 0.1%.
Among them, the silver paste antenna has several major technical characteristics: First, the antenna is different from the copper or aluminum antenna. The silver printed antenna is used without the risk of oxidation (silver oxide conductive, copper oxide insulation); the connection point is simple and not easy to damage. The second is the connection between the chip and the antenna, which uses a flip-chip link to achieve high reliability. If module technology is used, there are up to 6 physical / electrical connection points, but if flip chip technology is used, only 2 connection points are required. In this way, flip chip technology will be three times more reliable than module technology. From the perspective of bending ability, the length of the process surface of the module technology is 8.5mm, and the length of the flip-chip process surface is 3mm, which is 3 times more reliable than the module; the width of the module technology process surface is 4.5mm, and the width of the flip-chip process surface is 3mm. The module is 1.5 times more reliable.
In addition, through the test of silver paste antenna and copper antenna, the results show that the silver paste antenna has obvious advantages in torsion, bending, aging test, hot wedge test, life and stability in hot and humid environment.
The paper-based electronic label is composed of a paper medium substrate, a silver paste printed antenna and a non-contact flip chip. The advantages of paper-based electronic tags are as follows: from the point of view of physical characteristics, the tags are formed at one time, and there is no concept of Inlay. The paper on the label surface is the antenna printing substrate. Once the label is attached to the attached object, it has the characteristics of "one tear and destroy"; considering the convenience of application, it can provide continuous roll labels for linkage with barcode printers. Since there is no Inlay, the label surface is flat and easier to print.
By comparing the plastic inlay compound with the paper-based flip chip, it is found that the paper-based flip chip is thin and flat, with higher safety, good cold lamination compatibility, good resistance to high temperature, strong reliability, and longevity. Also longer.
Our paper-based electronic tags have been used in tickets for the Beijing 2008 Olympic Games, electronic passports, Lisbon metro tickets in Portugal, Valencia metro tickets in Spain, as well as in many European and American countries.
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