Flexible printed electronic circuits have recently attracted attention as an alternative promising methodology due to the additive process being more environmentally friendly and using less raw material compared to conventional lithography and chemical vapor deposition. However, printed circuits produced by roll-to-roll (R2R) conveyance are often scratched, which can result in breaks in the conductive tracks, cracks, or pinholes. This study investigated a proposed optimal design for an air bar for use in an R2R printing system. The optimal distance between the roll surface and floating substrate for preventing scratching of the printed circuit was investigated. The optimal design—including the blower frequency, size of air holes, and density of air holes—was investigated using simulations of fluid–structure interactions for estimating substrate behavior during pneumatic flotation. The distribution of air pressure in the space between the substrate and the surface of the air bar was calculated, and the deformation of the substrate by the air pressure was analyzed. The optimal design of the air bar was verified in numerical simulations and experiments using various conditions.

中文翻译：

---

印刷电路生产中卷对卷输送的气动浮选的优化设计

由于与传统的光刻和化学气相沉积相比，加成工艺对环境更友好且使用的原材料更少，因此柔性印刷电路作为一种有希望的替代方法已引起人们的关注。但是，通过卷对卷（R2R）输送产生的印刷电路经常被刮擦，这可能会导致导电迹线破裂，裂纹或针孔。这项研究调查了R2R打印系统中使用的气杆的最佳设计方案。为了防止刮擦印刷电路，研究了辊表面与浮动基板之间的最佳距离。最佳设计-包括鼓风机频率，气孔尺寸，气孔密度和气孔密度的研究是通过流体-结构相互作用的模拟研究，以估算气动浮选过程中的基质行为。计算基板和气杆表面之间的空间中的气压分布，并且分析由气压引起的基板变形。在各种条件下的数值模拟和实验中验证了气杆的最佳设计。