... three layers,two layers of non-woven with a layer of polyester film in the middle.DMD ... properties and impregnation properties. Applicable to Class B,F motors,it can be used as slot insulation ... blister, no adhesive flow5. ApplicationApplicable to Class B,F motors ,it can be used as alot insulation liner ... -turn insulation in the electrical appliances. F class DMD(electric motor insulation paper DMD)