（Figure1. Overview of flexible PI film — JYUTEC）
PI film stands out for four key properties:
Excellent heat resistance: PI can withstand demanding thermal conditions, making it suitable for many electronic manufacturing processes. However, its actual temperature tolerance depends on the material grade and process conditions.
Reliable electrical insulation: Its insulating properties help prevent unwanted electrical conduction between circuit paths.
Good compatibility with conductive pastes: With appropriate surface treatment and paste selection, PI film can support strong adhesion of printed conductive patterns.
Outstanding flexibility: Its flexible structure makes it suitable for electronic circuits used in curved, compact, and space-constrained designs.
（Figure2. Close-up of flexible PI film — JYUTEC）
Even the best substrate needs precise printing technology to produce fine, consistent circuit patterns.
With high-precision screen printing, silver paste lines as fine as 200 μm can be printed on PI film under suitable process conditions. That's approximately the width of two human hairs!
More importantly, fine lines require more than just a small line width. Clear edges, consistent line widths, and controlled paste deposition are essential for achieving reliable printing results and minimizing defects such as paste spreading and jagged edges.
For these applications, the JYUTEC IC-250B High-Precision Shuttle-Type Screen Printer offers a solution for precision pattern printing and batch production of fine conductive circuits on flexible substrates.
As smart devices continue to evolve, demand for compact, lightweight, and flexible electronic circuits is growing. By combining the properties of PI film with high-precision screen printing technology, manufacturers can explore new possibilities in flexible electronics.
Looking for a precision printing solution for flexible circuits?
Contact JYUTEC to discuss your application and explore the right printing solution for your production needs.
What products have you seen that use flexible circuits? Share your thoughts in the comments!
