What Is Diamond Dotted Paper (DDP)——DDP manufacturer

Описание: Diamond Dotted Paper (DDP) is a flexible electrical insulation material widely used in power and distribution transformers.
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It is manufactured by coating high-quality electrical insulation paper with epoxy resin dots in a precise diamond pattern.
During heat curing, the resin dots activate and bond adjacent insulation layers, improving mechanical strength and long-term stability.

🔧 Key Features

Good flexibility for winding and wrapping

Uniform epoxy resin dot distribution

Activated bonding during heat curing

Improved inter-layer adhesion

Stable dielectric and mechanical performance

⚙️ Typical Applications

Inter-layer insulation in oil-immersed power transformers

Turn-to-turn insulation for transformer windings

Electrical coils requiring reliable bonding and insulation

At XuJue, DDP insulation paper is produced under controlled temperature and coating conditions.
After curing, the paper is precisely slit to ensure consistent width, clean edges, and stable quality for transformer manufacturing.

Customized width, thickness, and roll length are available to meet different production requirements.

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