Effect of Hydrophobic/Oleophobic Nano Surface Treatment on the Release of Resistive PTC carbon paste from Emulsion Screens for Screen-Printed Heater Applications
Electronics RESHAPED USA 2026
Mountain View, California
Computer History Museum:
1401 N. Shoreline Blvd.
Mountain View, CA 94043
Resistive PTC carbon paste formulated for screen printed heater applications can exhibit difficult screen release behavior at the moment of screen-peel during print stroke. Hydrophobic/oleophobic nano surface treatments already have proven successful in improve the release of tacky Sn-Pb and Sn-Ag-Cu solder pastes from the surface of 304 stainless steel foil printing stencils used in electronics assembly. This study will investigate what effect these surface treatments will have on the release behavior of resistive PTC carbon paste, when applied to the photo-formed print cavities in an PVA-PVOH emulsion screen. Empirical print testing with quantification and analysis of the deposited paste results will provide the basis of the data and conclusions to be presented.
Authors:
Art Dobie - Technical Manager, MicroScreen LLC - South Bend, Indiana
Mike Wagner – Chief Innovation Officer, Butler Technologies, Inc. - Butler, Pennsylvania
Art Dobie bio:
Art Dobie is Technical Manager for MicroScreen LLC based in South Bend, IN. Art has 44 years of experience in the industrial, technical, electronic screen printing industry since receiving his BS degree in Graphic Communications with a specialization in Screen Printing Technology in 1980 from California University of Pennsylvania. He is a Life Member and Fellow of the Society of the International Microelectronics and Packaging Society (IMAPS), and was the 2006 recipient of the IMAPS John A. Wagnon Technical Achievement Award for outstanding technical contributions to screen printing technology as related to microelectronics. Art was inducted into the Printing United’s Academy of Screen Printing Technology (ASPT) in 1998, and was the 2010 and 2018 recipient of the Printing United’s David Swormstedt, Sr. Memorial Award, recognizing the best published technical article or paper written for any aspect of the screen printing industry.