低黏度油墨和橡皮布对无水胶印印刷导电层的影响研究

近年来,随着全球市场对电子器件需求量的不断增长,许多科研院所及部分企业都在尝试利用传统印刷(柔印、凹印、网印等)和数码印刷(喷墨印刷等)技术来制作电子器件。为了实现电子器件的高沉积精度,对印刷技术提出了以下几点要求:线条无缺陷,有锐边且分辨率高;图层无针孔,均匀且表面光滑;墨层厚度较薄。

Printing Conductive Layers using Waterless Offset Technology Considering the Influences of the Low-Viscosity Polymer Inks and the Rubber Blankets

This study describes the application of conductive polymer inks onto PET foils by the waterless offset printing technique. Commercially available conductive polymer inks were employed,which exhibit significantly lower viscosities than conventional offset printing inks.The main focus was put on the influence of the rubber blanket,which covers the blanket cylinder of the offset printing unit,on the morphology and electrical properties of the printed conductive polymer layers. Since film splitting occurs between substrate and rubber blanket,the latter affects the amount of ink which is transferred by the printing process.The wet film thickness of the printed material was determined for different rubber blanket specifications and inking rates.In addition,the resistivity of the printed conductive polymer layer was measured after flue-curing of the samples.Further,the electrical performance on corona-treated and untreated PET substrate foils was compared.