Tapes

Our tapes are essentially made out of mica paper, supported with different backing materials like glass cloth, polyester film, and polyester fleece. Several different types of binders like epoxy, AV, silicone are used depending on the application. Depending upon the levels of binder present, these tapes are termed "Resin Poor" (10% - 20%) or "Resin rich" (20% - 40 %). Normally, resins present in tapes used for the main portion of the coils are in B-stage form. Under heat and pressure, the resins cure to form a hard, protective covering, ensuring electrical and mechanical stability.

mica paper tapes

Flexible tapes used in overhang portions of coils retain flexibility even when heated during the operation of the electrical equipment.

Applications

Mica based tapes are normally used for the insulation of straight and overhang portions of coils of large electrical rotating machines such as motors, generators, and alternators.

Resin poor tapes are normally used for the insulation of coils where the taped coil is impregnated by Vacuum Pressure Impregnation (VPI).