Pressboard & Paper Materials
Diamond Dotted Insulation Paper (DDP)
Also known as: DDP Paper, Diamond Dotted Paper
Diamond dotted insulation paper is made by coating modified epoxy resin onto electrical insulation paper in a diamond-dot pattern. During coil drying and heating, the resin softens and cures, helping adjacent winding layers form a stable structure while preserving paths for oil penetration and gas release.
Dimensions, materials, tolerances and testing requirements are confirmed according to customer drawings and order specifications.
Key functions and options
- Supports interlayer and turn-to-turn insulation
- Diamond-dot resin pattern
- Promotes oil penetration and gas release
- Improves winding mechanical stability after curing
Typical applications
- Oil-immersed power transformer windings
- Interlayer insulation
- Turn-to-turn insulation
Quotation preparation
Information to include with your RFQ
- Base paper thickness
- Roll width and length
- Resin pattern or specification
- Quantity
For custom parts, a dimensioned drawing is the most reliable starting point. Drawings can be emailed to sales@boreviax.com.
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