For use in the plastics industry slight thermal mica band heaters are the ideal solution for many injection molding machines and molding machines. Mica band heaters can be found in several types of sizes, wattage, voltages, and materials. Mica band heaters are an inexpensive heating solution for external indirect heating. Bars are also popular. Mica band heaters use electric heating (NiCr 2080 wire /CR25AL5) to heat the outer surface of the drum or pipe and insulate high quality mica material.