Thin Electrical Grade Insulation Paper

Presspaper is made from 100% superior sulfate insulating wood pulp. It has good dielectric and high mechanical properties. Presspaper is widely used for transformers, electrical motors, electrical apparatus, meters, switches, etc. It also can be used to laminate with polyester film to produce insulation flexible laminates

Press paper – Thin Electrical Grade Insulation Paper Technical Character

Properties  Units  Values
Thickness mm 0.1-0.5
 Thickness Tolerance % ≤±10
Density g/cm3 1.0-1.2
Tensile Strength MD No Bending MPa ≥80
After Bending ≥35
TD No Bending ≥40
After Bending ≥60
Moisture Content % ≤8.0
Ash Content % ≤1.0
Electric Conductivity Ms/m ≤8.0
 PH of Water Extractives 6.0-9.0
Electric breakdown Strength (in air) 0.10mm KV/mm ≥9.0
0.15-0.25mm ≥10
0.30-0.35mm ≥10
0.40-0.50mm ≥9.0
Electric breakdown Strength (in air), after bending 0.10-0.15mm KV/mm ≥7.0
0.20-0.25mm ≥8.0
0.30mm ≥8.0
0.35-0.50mm ≥7.0