IS: 1659 Block Board

Prince Block Board IS: 1659 (Double Core)
Prince Block Boards are available in a moisture resistant & boiling waterproof grade, bonded with Melamine Urea Formaldehyde & Phenol Formaldehyde Synthetic Resin respectively. It is a premium quality board with high resistant properties against borer and termite attacks, Face Veneer, Core veneer & wooden battens are well graded for their quality by supervisors. The wooden battens are thoroughly seasoned in scientifically run seasoning kiln plants to control and equalize moisture in battens to get better bonding.
Battens are systematically arranged with the support of frames and utmost care is taken to avoid any extra gap between the battens. Regular tests are conducted in the modern laboratory to maintain the quality of block boards as per ISI standards.
IS: 1659 Block Board
Reason to Choose Prince Block Board:
- Bonded with high solid content resin
- Wide core & panel
- Wide battens frames for high screw holding capacity
- Thick face used for a better finish
- No warping humid conditions
- Dimensionally stable for architectural work
Technical Specifications IS:1659
TEST | ISI Requirement | Observed Value | |
---|---|---|---|
1 | Dimensional changes caused by Humidity | ||
a | Changes, mm | ||
From 65% RH to 90% RH | + 1mm Max. | + 0.50 mm | |
From 65% RH to 40% RH | - 1mm Max. | - 0.55 mm | |
b | Local Planeness | < 1/150 | < 1/175 |
c | At the extreme range of Humidity | No De-lamination at the extreme range of Humidity | No De-lamination observed |
2 | Adhesion of the Plies | Minimum Pass Standard | Excellent |
3 | Resistance to Water (72 Hours Boiling) | No De-lamination after 72 hours boiling | No De-lamination |
4 | Resistance to Micro Organisms | No appreciable sign of separation at Edges | No separation at Edges |
5 | Modulus of Elasticity | Min. 5000 N / sq. mm | 6050 N / sq. mm |
6 | Modulus of Rupture | Min. 50 N / sq. mm | 61 N / sq. mm |