are used as winding insulation between electrical conductors. The HGW material is cut to the external coil diameter. For small furnaces 1 – 100 mm, for furnaces from 1 – 30 t |= 150mm, for furnaces over 30 t |= 200/250 mm.
The intermediate layers are glued in offset by 1/3 of their length, in order to an open design of the coil for the expulsion of humidity. Ground intermediate layers are of very accurate dimensions and have optimum adhesion properties. Underground material is in general 15/100 mm over size, thus changing the coil length, and the adhesion properties are very poor.
