微细凹版胶印印版间液体转移过程研究  

Liquid Transfer between Two Separating Plates for Micro-Gravure-Offset Printing

作　　者：Hyun Wook Kang Hyung Jin Sung Taik-Min Lee Dong-Soo Kim Chang-Jin Kim 曹华(编译) 

机构地区：[1]Department of Mechanical Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701,Korea [2]Nano Convergence Machinery Research Division, 171 Jang-dong, Yuseong-gu, Daejeon 305-343,Korea [3]Mechanical and Aerospace Engineering Department, University of California at Los Angeles, Los Angeles, CA 90095-1597, USA [4]不详

出　　处：《中国印刷与包装研究》2009年第6期64-69,共6页China Printing Materials Market

摘　　要：为提高微细凹版胶印中油墨转移率,对两分离平行版之间的液体转移过程进行了实验研究。一版固定,另一版垂直移动,附着于版上的液滴被一分为二。因为两液滴的容积比随接触角而变化,所以在本研究中需特别关注两版上液滴的表面接触角。改变表面接触角的方法有化学处理、等离子体表面改性和介质电润湿等,通过图像分析可观测表面接触角和测量液滴体积。同时研究了液体转移过程及其相关现象,如液滴与平行版接触区域内卫星式液滴的产生及变化。实验结果有助于确定微细凹版胶印中印版滚筒、橡皮滚筒及基材的最佳表面能。Experimental investigations of the liquid transfer between two separating plates have been carried out, with the aim of increasing the ink transfer ratio in micro-gravure-offset printing. A sessile droplet is divided into two by moving one plate vertically with respect to a fixed plate. The surface contact angles of the sessile droplet on the two plates were of particular interest in this study because the volume ratio of the two droplets varies with the contact angles. Various methods for controlling the surface contact angle, including chemical treatment, plasma surface modification and electrowettingon-dielectric were assessed, lmage analysis of the droplets was carried out to estimate the surface contact angles and to measure the volumes of the droplets. The liquid transfer process and related phenomena, such as satellite droplet generation and the variation in the contact areas between the droplets and the plates, were observed. The experimental results help us to determine the optimal surface contact angles of the plate cylinder, blanket cylinder and substrate for micro-gravureoffset printing.

关 键 词：液体 胶印 印版 一分为二 化学处理 等离子体 图像分析 两分离 

分 类 号：F241[经济管理—劳动经济] G633.7[经济管理—国民经济]