인쇄전자부품 제조를 위한 스크린 인쇄에서 잉크 토출 현상의 시뮬레이션에 관한 연구

Abstract

Screen printing is a printing technique to manufacture the printed electronics whereby a mesh is used to transfer electronic ink onto a substrate. In this paper, the pulling out phenomena and the mechanism from a screen mesh were simulated by Navier-Stokes equation and were investigated the mechanism of transferring ink in the screen printing. Printing ink is forced into the mesh openings by the squeegee and by wetting the substrate, transferred onto the printing surface during the squeegee stroke. We found and demonstrated found that ink transferring phenomena is affected by the factors of opening of the mesh, screen tension, ink rheology, capillary number related to the interfacial tension between ink and screen, squeegee pressure and printing speed.