Applied Sciences in Graphic Communication and Packaging

Inhaltsverzeichnis

1. Printing Engineering Technology

   1. Frontmatter

   2. Inkjet Etching Silver Nanowire Film for Multi-touch Sensors

      Zhiqiang Gao, Biyu Yuan, Cheng Sun

      Abstract

      The paper studies how to fabricate multi-touch sensors with ink etching silver nanowire film. With PET film covered with silver nano wire as conductive material layer and diluted nitric acid as etching ink, people can produce a conductive grid with multi-touch screen by the technology of piezoelectric ink-jet printing. The stability of volume and the accuracy of the ink droplets are improved when the pulse of the waveform and printing strategies are adjusted. Then a double-sided capacitor film is produced of which the width of etching line is 65 μm. And the resistance is about 11 kΩ when the length of the grid is 20 cm.

   3. Applications Analysis of Paper-Based Color 3D Printing in the Map Industry

      Xingyan Yan, Jiangping Yuan, Guangxue Chen

      Abstract

      To provide business cases and creative ideas for paper-based color 3D printing applied into the map industry, two map categories including military derivative map market and civilian derivative map market were introduced and analyzed with lots of famous applications. According to the statistic results, the 3D map printed by various 3D printing processes will be attributed to a promising 3D printing application market in China. At last, three flexible business modes were also offered with detail cases and usage development guides based on paper-based color 3D printing process.

   4. Influences of Paper on 3D Printing Quality in UV Ink-jet Printer

      Liuxi He, Guangxue Chen, Minghui He, Junfei Tian

      Abstract

      The paper intended to research the influences of paper in UV ink-jet printer, mainly including the height and glossiness. Results proved that infiltrations had all appeared between three selected substrates of paper, on which the paper roughness and bulkiness had a linear effect. And the infiltration on the first layer of ink was bigger than those on other layers of ink. It is too stable to not be changed by the paper that the infiltrations between two layers of ink. As we knew, paper roughness and bulkiness would reduce the glossiness. There existed ink sticks on the third layer of ink and more, even some ink holes when the infiltrations were too big because of the substrate of paper had a bigger roughness and bulkiness. Therefore, the substrates used for UV ink-jet 3D printing should have a property of tight and smooth, and the first layer of ink must not be calculated in the whole height of model, so that the printing result would be satisfied.

   5. Research on Process Parameters of Screen Printed RFID Tags

      Junhui Fang, Youci Liang, Ruojing Wang, Yunfei Zhong

      Abstract

      RFID is an automatic identification technology. The screen-printed RFID tag is gradually applied broadly in logistics management, anti-counterfeiting and many other fields according to its uniqueness. Based on the principle of RFID tag and its antenna performance, this paper conducted a comparative RFID analysis on both traditional and new silk printing ways. The result of this research demonstrated that the process of silk-screen printing RFID is simpler and therefore has a significant cost advantage. Antennas of different structures and sizes were designed in this paper and the factors influencing the performance of antennas were analyzed. As for experiment, three factors influencing the performance of antennas were considered: mesh count, squeegee angle and the curing conditions of conductive ink (such as drying time and drying temperature). The screening experiment and analysis results illustrated that it is most conducive to RFID printing and the performance of conductive ink screen printed reaches its peak when the mesh of the silk screen is above 200 mesh/inch, squeegee angle is around 55°–75°, dying temperature is 100 °C in 10–15 min. From above processes, a most conductive ink screen printed performance can be fulfilled.

   6. Study on the Registration Testing of Color Digital Printing Machine

      Enyin Fang, Shengwei Yang, Lingjun Kong, Jinghuan Ge

      Abstract

      The paper designs a kind of testing chart for registration detection which has a property of strong adaptability and expansibility. After scanning the testing charts output by different color digital printing machines, the corresponding digital samples are obtained and identified by Image-quality software. Through subjective and objective analysis based on the data of the digital samples, a method is proposed to evaluate the accuracy of registration of the color digital printing machine. The experiment shows that it cannot only be used to effectively judge registration of different color, but also can conclude which registration accuracy coming from different color digital printing machines is better. It is proved that this method can be used to evaluate the accuracy of color digital printing machine quickly and successfully; it has certain practice guiding sense for development and application of registration measurement technology.

   7. The Solutions to the Quality Defects of Inkjet Printing

      Xuemei Li, Shiyong Luo, Shaoguo Li, Yan Zhao, Gang Deng, Guorong Cao

      Abstract

      Inkjet printing technology has advantages of energy saving and environmental protection, as well as personalized on-demand printing. Inkjet digital printing is a pressure free printing method, its quality defects is different from other printing method,such as offset printing and gravure printing. The analysis shows that the main types of inkjet digital printing defects include color rendition, paper flatness, graphic edge sharpness, back sticks, dirty ink dots and white lines. By analyzing the specific characteristics of the above inkjet printing quality defects, the possible causes and the solutions to the quality defects of inkjet printing are given.

   8. Flexography Printed Pattern Based on Nano-Copper Conductive Ink

      Yi Fang, Zetao Li, Rumeng Yao, Aixin Tang, Tingting Zhang, Yaling Li, Yanfang Xu, Li Yang, Luhai Li

      Abstract

      This work demonstrates a simple printed electronics process to obtain the copper pattern by flexography. The nano-copper suspension was synthesized by liquid chemical reduction method. The conductive ink was prepared with nano-copper and glycerol. The copper pattern was printed by a flexo graphic printability tester and then dried in an oven at 80 ℃. The copper in square pattern exhibits better conductivity than that in hexagon, because of the higher surface line density. The confocal laser scanning microscope (CLSM) indicates that the heights of the copper patterns are different in relation to printing direction and shape. The morphologies of the two kinds of the copper pattern were fine. This process could apply to the poly (ethylene terephthalate) (PET) substrate and is easily operated. The printed copper pattern would be used for transparent electrode, printed circuit board, antenna and flexible displays.

   9. Analysis and Research on Several Mainstreams Printing Digital Workflow

      Chao Peng, Guangxue Chen

      Abstract

      In this study, we report on the quality and characterization of printing brochure, which was treated by founder ElecRoc and Cleo Prinergy digital workflow respectively. The color of brochure showed improved printing quality and work efficiency with the using of digital printing workflow, which is convenient, easy and low energy-consuming tool to control and manage printing process. The printing brochure were analyzed by Spectrophotometer and their image definition and dot features were investigated. It was found that the printing brochure with digital work flow can be completed within 24 h, moreover with less mistake, but normal process will take at least 72 h. Also the color characterization of the brochure is more close to the original.

   10. Study on the Effect of PVA Aqueous Solution on Water Quality

       Meiqi Yang, Guorong Cao, Dongli Li, Xinting Wang

       Abstract

       Polyvinyl alcohol (PVA), polymer material, with excellent polymer properties and water solubility, it is widely used in the field of hydrographics transfer printing, textile, pesticide and washing and packaging. In this paper, infrared spectroscopy and various parameters of PVA and reference water samples were tested, such as pH, dissolved oxygen, anionic surface activity of aqueous solution, PVA aqueous solution and so on. The effect of PVA film on water quality was studied. The research results showed that by infrared spectroscopy, there were a large number of hydroxyl groups and possible residual ester groups in PVA. The pH, color, dissolved oxygen, total phosphorus, ammonia nitrogen, sulfide, total E. coli and suspended matter in the PVA aqueous solution satisfied the requirements required in the standard values.