The use of silicone inks like screen printing silicone ink, mold silicone ink and other silicone inks by pad printing or screen printing comes at a great cost. Silicone ink tends to stick to the printing pad, making the printing labor-intensive, as regular cleaning is needed to keep printing quality. As silicone ink does not dry out like solvent-based ink, it needs baking in an oven to cure. http://www.xysiliconeink.com/silicone-ink/screen-printing-silicone-ink/