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3M Flexible Insulation

3M OEM Products

Composite Materials

Electrical Insulation

Application Guide

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DM Insaturated



DM is a two-ply laminate obtained by hot coupling of a non-woven polyester fleece to one side of an electrical type polyester film.


The fabric is coupled to polyester using a special heat resistant resin, which puts the material into thermal Class F at 155° C. It’s non-woven polyesters mats absorbs the resin during the impregnation process where else the polyester-ply adds dielectrical strength, stiffness, memory shape and snapback.

Technical Data

  Unit 0,080mm 0,11mm 0,14mm 0,16mm 0,19mm 0,24mm 0,31mm 0,41mm
Nominal Thickness mm 0,080 ± 15% 0,11 ± 15% 0,14 ± 15% 0,16 ± 15% 0,19 ± 15% 0,24± 15% 0,31 ± 15% 0,41 ± 15%
Area Weight g/m2 76 ± 12% 114± 12% 148 ± 12% 183 ± 12% 218 ± 12% 309 ± 12% 393 ± 12% 533 ± 12%
Dielectric Breakdown Voltage kV 4 6 7 9 10 15 18 22
Elongation MD % 18 18 18 18 18 20 20 20
Tensile Strength MD N/10mm 65 95 115 135 165 235 295 395

Technical Documents

  • Data Sheet DM 2007-11-29 Rev3 ingelse