Product Description  Diamond Dotted Insulation Paper(D.D.P.) is made of electrical insulating paper with diamond-shape Expoxy resin dotted in both sides. The Epoxy resin used in D.D.P. contains a kind of incubative hardener material, it is  dry and crisp material at normal temperature (below 35). In the process of coil desiccation, the coated epoxy resin would be melted in a certain temperature and become  adhesive. With the temperature increased, the melted resin would cure to C tage, and firmly adheres each  adjoining layer of the coil, thus forming a winding section.If a short circuit occurs in the coil, the resin bond  strength would sufficiently prevent the displacement of each winding layer, which ensures the long-term  mechanical and physical properties of the insulation structure. As the resin coating distributes in a  diamond-dotted pattern,little quantity of the resin would soak into the insulating paper during the melting  and curing process, which ensures the elimination of air content in the insulating paper and guarantees the  soakage of oil, minimizing the damages of electric corona and partial discharge.