Diamond Dotted Polyester Film (DDM)

Diamond dotted polyester film, also known as DDM. It is a main insulation material made from polyester film with diamond-shape epoxy resin dotted on. It is mostly used in electrical equipment like mutual inductors, transformers and etc.. No. It……

Diamond dotted polyester film, also known as DDM. It is a main insulation material made from polyester film with diamond-shape epoxy resin dotted on.

It is mostly used in electrical equipment like mutual inductors, transformers and etc..

No. Item Unit Index Value
1 Base Material Thickness mm 0.05 0.07 0.01
2 Base Material Thickness Tolrance mm ±0.005 ±0.007 ±0.01
3 Quantitative and Deviation g/m3 82±3 102±2 144±2
4 Tensile Strength (lengthways) Mpa ≥150
5 Breakdown Voltage V ≥6000 ≥6500 ≥7000
6 Tensile Strength Kpa ≥350
7 Shrinking Percentage % ≤3

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