METHOD FOR DESIGNING PROCESSING PARAMETER IN THE MANNER OF ROLL-TO-ROLL SLOT DIE PRINTING

摘要

PURPOSE: A process variable design method in a roll to roll slot die printing method is provided to allow a user to produce a thin film including the uniform thickness of the thin film by designing a process variable. CONSTITUTION: Target thickness is set by considering the weighted ratio of solution injected by a coating die(S20). The moving speed of an FPCB(Flexible Printed Circuit Board) for obtaining the target thickness is set by considering the viscosity of the solution, the surface tension of the solution, and a gap between the FPCB and the coating die(S30). Flow rates corresponding to the moving speed of the FPCB are set(S35). A speed-flow rate corresponding to the moving speed of the FPCB is determined by referring to a characteristic graph. [Reference numerals] (AA) Start; (BB,DD) Yes; (CC) No; (EE) End; (S10) Setting a required target thickness; (S20) Setting a thickness before drying by considering Wt%; (S30) Determining the moving speed of a flexible printed circuit board by considering the viscosity of a solution, surface tension, and the gap of coating; (S35) Determining flow rate corresponding to the moving speed; (S70) Drying and hardening process; (S80) Measuring the thickness of a thin film; (S90) Matched?