How to screen print sub 30um features?
03 Aug, 2022
Screen printing never ceases to advance and is entering into ultrafine line printing territory. FERNANDO ZICARELLI explains in this short 5-min talks important considerations to achieve fineline printing and further push the resolution down:
- Team effort: screen printing is a team effort, requiring close collaboration between paste maker, mesh and emulsion maker, printer, etc.
- Black stainless steel mesh: conventional stainless steel meshes are reflective (10-15%). To achieve narrow and sharp openings in the high resolution photosensitive emulsion, random reflections from the stainless steel mesh- especially at 365nm and 405nm wavelengths- need to be minimized. This is why a black version is required
- Narrow meshes: Asada Mesh is the master of making the most advanced stainless steel meshes. To achieve sub 30um, a mesh with a diameter of 11-13um with 55%-60% opening will be required. Asada Mesh is already pushing the performance envelope, offering even 9um meshes. This is an incredible advance, considering it takes around 3 years of intense developments to shave 1um from the diameter of the mesh
- Substrate selection: depending on paste, substrate selection is key to balance surface tension/energy. Here, Fernando shows the outsize impact of substrate properties on on even 50um printed lines
To learn more and to meet the Asada Mesh team join us in Eindhoven (12-13 OCT)
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This page is dedicated to bringing you the latest technical, application, and market analysis for the diverse and broad space of additive electronics. This emerging technology frontier encompasses printed, flexible, hybrid, 3D, inmold, structural, stretchable, and wearable electronics.
