 |
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| High Density
Pre Compressed Board Balaji Board Grade 3.1 |
| Medium Density Pre Compressed Board Balaji Board Grade 2.5 |
| Insulating Press Paper
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| Insulating DDP Paper
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| Insulating Kraft Paper
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Contact Us: Balaji Cork & Rubber Inc. E- mail: info@balajicork.com, balajicork@yahoo.co.in |
BALAJICORK- High Density Pre Compressed Board(Balaji Board Grade 3.1)
Balaji board 3.1
High density Pre compressed pressboard
BalajiBoard 3.1 grade is made from 100% high purity unbleached sulfate kraft pulp. The wet board is pressed & dried simultaneously to obtain boards of good dimensional stability, mechanical strength, high elongation and electric strength,high mechanical strength & compressibility make Balaji board 3.1Grade an ideal board for manufacture of various machined components such as radial & axial spacers, cylinders, runners & blocks widely used in power transformers ,reactors capacitors, switches and other manufacturing.
Standard thickness available of solid board
1.0 to 3.0 mm and 4.0 to 8.0
Standard sheet sizes in mm
Width
|
Length
|
2200 |
4400 |
2200 |
3300 |
2200 |
2200 |
2200 |
1100 |
2000 |
1000 |
Tolerance on thickness:
≤1.50 mm ± 7.5%
> 1.50mm ± 5.0%
On sheet size : ± 5.0mm
Non standard thickness can
be produced within the range. However minimum order quantity will have to be 1MT.
Reference Grade & Standard |
BALAJI BOARD B 3.1 |
Color & Appearance: Natural Brown & Matte with mesh mark on both sides |
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Physical Properties |
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Density, g/cc, range ≤1.50 mm |
1.00 ‐ 1.20 |
> 1.5 ‐ 3.0 mm |
1.10 ‐ 1.25 |
> 3.0 ‐ 6.0 mm |
1.15 ‐ 1.30 |
Moisture content, %, max |
6.0 |
Shrinkage MD, %, max |
0.50 |
Shrinkage CD, %, max |
0.70 |
Shrinkage PD, %, max |
5.0 |
Chemical l Properties |
|
Conductivity of Aqueous extract, mS/m, max ≤1.50 mm |
5.0 |
> 1.5 ‐ 3.0 mm |
6.0 |
> 3.0 ‐ 6.0 mm |
8.0 |
pH of. Aqueous extract, range |
6.0 ‐ 9.0 |
Oil absorption, %, min ≤1.50 mm |
11.0 |
> 1.5 ‐ 3.0 mm |
9.0 |
> 3.0 ‐ 6.0 mm |
7.0 |
Ash content, %, max |
1.0 |
Mechanical Properties |
|
Tensile Strength (Mpa), min MD/CD ≤1.50 mm |
100/75 |
> 1.5 ‐ 3.0 mm |
105/80 |
> 3.0 ‐ 6.0 mm |
110/85 |
Elongation, (%), min, MD/CD |
3/4 |
Compressibility ‘C’, (%), max ≤1.50 mm |
10.0 |
> 1.5 ‐ 3.0 mm |
7.5 |
> 3.0 ‐ 6.0 mm |
5.0 |
Reversible part of Compressibility ‘Crev’, (%), min ≤1.50 mm |
45 |
> 1.5 ‐ 3.0 mm |
50 |
> 3.0 ‐ 6.0 mm |
50 |
Electric Strength Properties |
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Electric Strength Air/Oil (kV/mm), min ≤1.50 mm |
12/40 |
> 1.5 ‐ 3.0 mm |
11/35 |
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> 3.0 ‐ 6.0 mm |
10/30 |
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