Electrical Insulation

DyFlex® Polyester film and fleece based flexible laminates

DyFlex® insulating products derive from the coupling of a polyester non woven fleece with a polyester plastic film. The non woven polyester fleece employed is made out of short fibers strongly calendered to the polyester film by appropriate adhesive resins. Further improvements in the overall performance of the laminate are achieved by saturating the non woven fleece with special synthetic resins.

DyFlex® laminates are available both unsaturated (ISF and IDF) and saturated (SF and SDF). The unsaturated version is natural white, the saturated one is pink (other colors available upon request). Coveme DyFlex® laminates are designed for the insulation of electric motors, transformers and electrical equipment of class F. In electrical motors or, in general, in rotating machines, these laminates are used in slot closure and insulation as well as a separator phase on the heads of the windings. In transformers and electrical static equipment Dyflex® is used as interlay insulator.

DyFlex® Type Product structure Treatment
ISF Double Unsatured
SF Double Satured
IDF Triple Unsatured
SDF Triple Satured
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DyFlex® laminates are supplied in rolls with standard width 910 mm and internal diameter 76 mm. Different widths can be supplied upon request, starting from a minimum width of 6 mm with increments of 0,1 mm and a cutting tolerance of +/- 0,2 mm.

The values given in the table are average values and not specifications.
The total thickness tolerance is +/- 15% for laminates with films in thickness up to 190µ and +/- 10% for laminates with films thickness 250 and 350µ.
The tolerance on the basis weight and yield is +/-12% (IEC 626).

DyFlex® is Coveme's registered trademark.

Coveme electrical insulation products are Repackage Recognized Component UL (E351391).
dyFlex® is UL certified (file E209645).
Coveme is UNI EN ISO 9001-2008 and ISO 14001 certified.