Diamond Dotted Film

Diamond Dotted Film
Main Parameters:

Insulation class:E Class (120℃)

Width: 1010mm


Can be customized

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Product Information

Brief Introduction of Diamond Dotted Film

Diamond dotted polyester film is the insulation material made by coating special modified epoxy resin on the electrical polyester film,and baked it to semi-cured state.
For the resin coating layer on the film is points but not a whole,the air and liquid can easy circulate in the passages between the resin coating,and this will minimize the damage of corona and partial discharge.
Diamond dotted polyester film can be used as layer insulation material in the insulation system of air or oil,and it mainly used as layer insulation or turn-to-turn insulation of six sulfur hexafluoride mutual inductor and transformer.

Main features of the Diamond Dotted Film

—Insulation class:E Class (120℃)
—Width: 1010mm
—Can be customized
—The diamond dotted paper has been approved by UL (NO.: E310670) ,ROHS and REACH test.

 Diamond Dotted Film, Diamond Dotted Film for insulation

Technical Parameters







Base material thickness





Thickness tolerance


±0.0 05

Tensile strength



Single resin thickness






Power frequency breakdown voltage


≥ 6000

≥ 7000

≥ 8000

Bonding strength
(bonding shear strength with copper plate)



Long-term heat resistance




Store in a dry, clean and ventilated environment below 40 ℃. It is not allowed to be close to fire sources or heating, and protected from direct sunlight. The storage period is 10 months. The over storage period can be used after passing the inspection.


1.Q: Are you trading company or manufacturer ? 

A: We are a manufacturer, We have more than 36 years experience in producing electrical insulation material.

2.Q: Where is your factory located? How can I visit there? 

A: Our factory is located in Xuchang,Henan provience.

3.Q: Which certification do you have?

A: The plant has passed the certificate of ISO 9001 quality system certification;
The products have passed ROHS test.

4.Q: Can i get a samples for free?

A: Of course we can sent you a sample of 2715 pvc insulation fiberglass sleeving for free, customers just need to pay a litter shipping change.

5.Q: How long is the delivery time?

A: Generally it is 5-15 days if polyimide film price is  in stock, or it is 15-30 days.

Insulation Material Guide:

  • Composite Insulation Paper
  • Insulation Paper
  • Insulation Varnish
  • Insulation Film
  • Insulation Board
  • Insulation Sleeving
  • Insulation Tape
  • Varnished Cloth

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