Mica band heaters comprise a nickel-chrome plate wound round a sheet of mica with an external cover in aluminium-plated sheet metal or stainless steel. Operating temperature reaches 350°C, with specific charges up to 4 W/cm2. Besides the band type, Zoppas can also offer flat mica heating elements that reach working temperatures of up to 450°C. They are also employed on woodworking machinery and scientific-medical equipment.