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DMD Insulation Paper Class F 155 Degree Resistant Flexible Laminates

  • DMD Insulation paper is a three-layer flexible composite material consisting of polyester film bonded with polyester non-woven fabric on both sides. Rated for Class F (155°C) insulation, it offers excellent mechanical strength, dielectric properties, and high resin absorbency for varnishing.
  • We offer professional die-cutting and slitting services to provide custom-sized slot liners and gaskets that optimize your motor and transformer assembly process.
  • The heat resistance Class is B (130 °C).or F Class (155 °C).
  • As slot, interterm and liner insulation for F-grade motors, generators and electric appliances.
  • DM, DMDM also available
  • Epoxy pre-impregnated DMD also available.
  • Thickness 0.16~0.46mm 0.5~1.1mm
  • Color Blue green white pink

product detail

Durable Triple-Layer Construction DMD (Polyester Non-woven Fabric / Polyester Film / Polyester Non-woven Fabric) is a reliable and cost-effective insulation solution for electrical machinery. The inner polyester film provides superior electrical insulation and tensile strength, while the outer layers of non-woven fabric enhance the material's mechanical toughness and ensure excellent bonding with insulating varnishes during the impregnation process.

Key Technical Advantages

  • Class F Thermal Rating: Designed for continuous operation at temperatures up to 155°C.

  • High Impregnation Capability: The non-woven fabric surface is optimized for high absorption of resins and varnishes, ensuring a solid, moisture-resistant insulation system.

  • Excellent Dielectric Strength: Provides a dependable electrical barrier, preventing shorts in compact motor designs.

  • Mechanical Flexibility: Easy to fold and shape without cracking, making it ideal for automated slot insertion.

Precision Die-Cutting & Custom Fabrication We specialize in converting DMD into precision-engineered components. Utilizing advanced die-cutting and slitting technology, we can supply DMD in specific widths (slitted rolls) or complex custom shapes (die-cut pieces). Whether you need precise slot liners for small motors or interlayer insulation for large transformers, our custom solutions ensure a perfect fit and high production efficiency.

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Epoxy im-pregnated DMD also available.

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Application

1. Electric Motor Manufacturing

Applications: Widely used as slot insulation, phase insulation, and turn-to-turn insulation in Class F motors. Its mechanical durability allows it to withstand the stresses of high-speed winding and insertion.

2. Transformer Insulation

Applications: Ideal for interlayer and end-turn insulation in dry-type transformers. The material’s excellent dielectric properties ensure long-term stability and safety in power distribution hardware.

3. Electrical Appliances

Applications: Used in various household and industrial appliances requiring reliable Class F insulation. Our custom die-cut shapes allow for seamless integration into diverse component designs.

4. Power Tools & Pumps

Applications: Providing robust insulation for high-performance power tools and water pump motors. DMD’s resistance to mechanical wear and chemical exposure makes it a preferred choice for demanding industrial environments.