Chemical Engineering Commons^™

Unzippable Polymer Mask For Screening Operations, Ravi F. Saraf

Department of Chemical and Biomolecular Engineering: Patents

The present invention relates to a dry process for forming patterns on a substrate. More particularly, the process contemplates coating an unzippable polymer film with a small amount of desirable UV if required on a substrate; laser ablating said film into a desired pattern or mask; screening a conductive or resistive paste onto the substrate through the ablated features of said mask; heating said substrate and mask to the unzipping temperature of said mask; and, vaporizing said mask and UV absorbing dye if present leaving behind the solid of said conductive or resistive past adhered to the substrate in the …