SAANBOARDS.COM
Home       Register       My Account      
Language
Pressboard Laminated Pressboard Machined Components Contact Us
Technical Specification Testing Facilities Testing Reports Quality


Technical Specifications

Download Technical Specification               Download ERDA Testing Reports

Our product is conforming to different specifications of Bureau of Indian Standards and International Standards, viz., IEC 60641-3-1 (B-3.1), JIS C 2305, DIN 7733, BS 231-1975 & IS - 1576 _ 1992.

We use cellulose based unbleached “electrical grade” softwood pulp as raw material along with pure water constitutes the basis of Pressboard.

The boards are characterized by high density, high purity, uniform thickness, dimensional stability, low compressibility, low shrinkage and high electrical strength.

Technical Specification of our Pressboard
Reference Standard IEC 60641 – Part 3, Grade B.3.1
General
Color & Appearance Hard rigid sheet light brown in colour with wire mesh marks on both sides
Raw Material 100% Unbleached Sulphate Softwood Pulp
Nominal Size 2200 mm X 1160 mm (2.20 meter X 1.16 meter)
Thickness 0.5mm, 0.8mm, 1.0mm, 1.5mm, 2.0mm, 3.0mm, 4.0mm, 5.0mm, 6.0 mm
Thickness tolerance %
mm    
1.6 ± 7.5  
>1.6 ± 5.0  
 Physical Properties 
 Density, g/cc, range
mm    
1.6 1.00 - 1.20  
> 1.6 - 3.0 1.10 - 1.25  
> 3.0 - 6.0 1.15 - 1.30  
 Moisture content, %, max  6
 Ash content, %, max 1.0
 Shrinkage, %, max
MD CMD Thickness
0.5 0.7 5.0
 Oil absorption, %, mim
mm    
1.6 11.0  
> 1.6 - 3.0 9.0  
> 3.0 - 6.0 7.0  
 Cohesion between plies Pass – split would show rupture of one or more plies and would have distinctly ragged appearance.
 pH of. Aqueous extract, range  6.0 - 9.0
 Mechanical 
 Tensile Strength, Mpa, mim
mm  MD  CMD
1.6 100  75
> 1.6 - 3.0 105  80
> 3.0 - 6.0 110  85
 Elongation, %, min
mm  MD  CMD
1.6 - 6.0 3.0 4.0
 Compressibility C, %, max
mm    
1.6 10  
> 1.6 - 3.0 7.5  
> 3.0 - 6.0 5.0  

 Reversible part of
Compressibility Crev, %, min

mm    
1.6 45  
> 1.6 - 6.0 50  
Electrical
Conductivity of aqueous extract, mS/m, max
mm    
1.6 5.0  
> 1.6 - 3.0 6.0  
> 3.0 - 6.0 8.0  
Electric strength, kV/mm, min
mm In Air In Oil
1.6 12 40
> 1.6 - 3.0 11 35
> 3.0 - 6.0 10 30
 



 
Home | Company | Pressboard | Laminated Pressboard | Machined Components
Techinical Specifications | Testing Facilities | Quality Control | Quality Policy
Photo Gallery | Management | ERDA Testing Reports
Location Map | Contact Us