摘要
本研究使用計算流體力學軟體模擬非牛頓流體在凹版印刷製程中轉移的過程，分析平板相對凹槽之運動，觀察導電液體在平板間的拉伸型態。油墨轉印之改善以轉移量及完成後的電阻值為指標。本研究架設驗證實驗室，藉由實驗並利用CCD拍照與錄製影像，觀察真實轉移量與模擬是否趨勢相符。銀漿轉移量數據分析使用L-18田口法，從多個控制因子中找到一組最佳化參數，並與實驗比對趨勢，呈現正向關係，顯示影響油墨轉移量的控制因子排序為: 溝槽角度、上板接觸角、黏度、拉伸速度、下板接觸角、表面張力。其中最佳溝槽角度為60度。最佳化參數組合可提升原有油墨轉移量18%，經工研院實際機台驗證可以提升25%的轉移量，電阻值下降10%，應用在電容式觸控面板能夠節省充放電時間。
並列摘要
In this research the gravure offset printing process was examined for non-Newtonian ink transferred from intaglio to upper plate by using computational fluid dynamics, including the movement of plate comparing to the gravure to observe the stretch of inductive ink. The improvement of transfer is indicated by the transfer amount and the product electrical resistance. A verifying lab was built to carry out experiments and the transfer was filmed by CCD camera, to examine whether the amount of ink transfer is consistent to the simulation. The ink transfer was investigated by Taguchi Method, the optimal parameters have been found from the control factors and match is positive with the result from the experiments. The results showed that the influence of ink transfer is as following order: angle of the gravure, upper contact angle, viscosity, velocity, bottom contact angle and surface tension, the best angle of gravure is 60 degrees. The best combination of parameters is expected to be able to increase 25% ink transfer, meanwhile the resistance can be reduced by 10%, which saves time for charging and discharging the touch panel.