At Tianjin Fortune, we specialize in high-performance polyimide films and tapes designed to meet the most demanding requirements of modern industry. Our products offer exceptional thermal stability, electrical insulation, and chemical resistance.
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Polyimide film laminated with NOMEX paper combines high-temperature resistance, electrical insulation, and mechanical strength. Ideal…
View DetailsOur Polyimide Film With Nomex Paper (often designated as TF6051-DK) is a high-performance laminated insulation material. It is manufactured by bonding standard polyimide film with Nomex paper on one or both sides using a high-temperature resistant adhesive. While the polyimide film core provides excellent dielectric strength and thermal stability, the Nomex paper layers add vital mechanical cushioning, exceptional tear resistance, and high-temperature dimensional stability, resulting in an optimal composite tape or sheet.
In high-stress electrical equipment, mechanical friction and thermal expansion can easily tear fragile insulation films. The outstanding physical durability of Polyimide Film With Nomex Paper makes it the preferred Class H insulation material for heavy-duty electric motors, wind turbine generators, and railway traction motors. It is widely applied as slot insulation, phase-to-phase insulation, and turn-to-turn insulation, maintaining physical integrity under constant vibration and high mechanical load conditions.
Beyond motor winding, these composite materials are essential for dry-type and oil-immersed transformers. The outer Nomex paper layer exhibits excellent absorption of insulating varnishes and oils, establishing a complete chemical bond that enhances thermal conductivity and prevents moisture ingress. Fully compliant with RoHS, REACH, and UL certifications, our composite rolls are available in multiple thickness variations with strict tolerance control to ensure seamless integration into international electrical manufacturing lines.
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Lamination creates a composite that leverages the distinct strengths of both materials. Standard polyimide film provides outstanding electrical insulation (dielectric strength) but is susceptible to tearing or puncture during rough, automated motor slot insertion. Laminating it with Nomex paper adds exceptional mechanical strength, puncture resistance, and cushioning, protecting the delicate polyimide core from physical damage while enhancing overall thermal stability.
Polyimide Film With Nomex Paper is rated as a Class H (180°C) electrical insulation material. Both polyimide and Nomex paper can withstand extreme operating temperatures, ensuring that the composite operates continuously and stably under high-heat conditions without delaminating, melting, or degrading in dielectric performance.
Yes. The fibrous structure of the Nomex paper layers is designed to readily absorb and hold insulating varnishes, resins, and transformer oils during the vacuum pressure impregnation (VPI) process. This high varnish absorption ensures a secure mechanical bond within motor slots and transformers, improving heat dissipation and creating a solid barrier against moisture.