Substrate is used in a converting process such as printing or coating to generally describe the base material onto which, e.g. s, will be printed. Base materials may include: plastic films or foils, release liner textiles, plastic containers any variety of paper (lightweight, heavyweight, coated, uncoated, paperboard, cardboard, etc.), or parchment.
Electronics
Printing processes such as silk-screening and photolithography are used in electronics to produce printed circuit boards and integrated circuits. Some common substrates used are;Rogers & Plett, p. 162 Glass-reinforced epoxy, eg FR-4 board Ceramic-PTFE laminate, eg 6010 board Alumina ceramic Silicon Gallium arsenide Sapphire Quartz
References
Bibliography Rogers, John WM; Plett, Calvin, Radio Frequency Integrated Circuit Design, Artech House, 2010 .