Diamond Dotted Paper

Diamond Dotted Paper (DDP)

We manufacture Diamond Dotted Paper using an electrical grade insulating kraft paper with thermostable 'B' stage heat curable diamond shaped epoxy resin coating applied in such a way that sufficient spaces exists between them for oil impregnation. It is used to electrically insulate and mechanically bond the winding layers; by this the epoxy resin on the kraft paper cures during the process and forms a high strength bond. This bond prevents the windings from moving during operation or under short circuit stresses. The diamond shaped epoxy resin coating improves the temperature resistance and thermal performance of the kraft paper. Due to adhesion it provides quick evacuation of air and moisture during drying and thus minimises the risks of partial discharge. Thus with the use of Epoxy Dotted Paper it gives greater strength and coil integrity throughout the life of the transformer. It is tact free at room temperature and after curing provides right bonding. It is available in thickness ranging from 2mil to 20mil of any slit sizes.

We also manufacture DDP by using Nomex®️ paper or press paper as a base paper as per customer requirement. Nomex®️ paper is a product of DuPont that provides high levels of electrical, chemical and mechanical integrity upon using.