When cured, it becomes a rigid, homogeneous structure, which offers excellent moisture, solvent and chemical resistance. Faster press processing, reduced processing costs. Greater environmental protection. Reduced inventory costs. Mica Mat 77984 tape is a B-staged, solventless epoxy resin impregnated, reinforced mica paper tape designed for pressure molding processes. In the uncured state 77984 tape is highly flexible for ease of application by hand or machine. Long shelf life.