Compressed Pressboard, Transformer Insulation Paper Board, Precompressed Press Board, Transformer Pressboard, Laminated Pressboard, Electrical Insulation Paper board, Insulation Cardboard.
From 100% Unbleached sulphate wood pulp. Cardboard makes which on the intermittent type board machine. Used in transformer, Excellent dielectric properties, good heat resistance, high mechanical properties.
Thickness: 0.5, 0.8, 1.0, 1.5, 2.0, 2.5 3.0, 4.0mm.
Size: 1000mm*2000mm, 2000mm*4000mm, 1600*3200mm, 3200mm*4200mm, or according the customer's demand.
Through ISO 9001. UL, SGS, RoHS certification.
If you have the demand, please contact with us. We can supply the best competition with the best price.
From 100% Unbleached sulphate wood pulp. Cardboard makes which on the intermittent type board machine. Used in transformer, Excellent dielectric properties, good heat resistance, high mechanical properties.
Thickness: 0.5, 0.8, 1.0, 1.5, 2.0, 2.5 3.0, 4.0mm.
Size: 1000mm*2000mm, 2000mm*4000mm, 1600*3200mm, 3200mm*4200mm, or according the customer's demand.
Through ISO 9001. UL, SGS, RoHS certification.
If you have the demand, please contact with us. We can supply the best competition with the best price.
Index. | Unit | Values | ||||
≤1.6 | >1.6~3.0 | >3.0 | ||||
1 | Nominal thickness tolerance | % | ≤10(±) | |||
2 | Nominal Grammage | g/cm3 | 1.00~1.20 | 1.00~1.25 | 1.15~1.30 | |
3 | Shear strength,M.D. | Mpa | ≥100 | ≥105 | ≥110 | |
4 | Shear strength,C.M.D. | Mpa | ≥75 | ≥80 | ≥85 | |
5 | Elongation (M.D.) | % | ≥3.0 | |||
6 | Elongation (C.M.D.) | % | ≥4.0 | |||
7 | Shrinkage | % | ≤10.0 | ≤7.5 | ≤5.0 | |
8 | Shrinkage which would resume | % | ≥45 | ≥50 | ≥50 | |
11 | Shrinkage: | M.D. | % | ≤0.5 | ||
C.M.D. | ≤0.7 | |||||
Thickness direction | ≤4.0 | |||||
12 | Moisture content | % | ≤6.0 | |||
13 | Ash content | % | ≤1.0 | |||
14 | Electrical conductivity of aquesous extract | ms/m | ≤1.6 | >1.6~3.0 | >3.0 | |
15 | Aquesous extract (PH) | _ | 6~9 | |||
16 | Oil absorption | % | ≥11.0 | ≥9.0 | ≥7.0 | |
17 | Voltage resistant strength(In air) | MV/m | ≥12 | ≥11 | ≥10 | |
18 | Voltage resistant strength(In oil) | MV/m | ≥40 | ≥35 | ≥30 |