A superior quality block board, V.I. board imbibes the strength of solid wood and smoothness and finish of finely hardwood ply. V.I. boards are manufactured from combination of selected seasoned hardwood / pinewood timber battens and hardwood core veneers. The boards are bonded with urea formaldehyde resin under high pressure and temperature for MR grade and phenol formaldehyde for BWP grade. Chemically protected against termites and borers, V.I. boards have increased mechanical strength and dimensional stability compared to other block boards. Being less hygroscopic, V.I. boards have much lower tendency to absorb moisture and are hence resistant to twisting / wrapping and have superb screw and nail holding capabilities. V.I. boards thus are virtually indestructible and can resist the vagaries of weather.
Furniture, partitions, racks / shelves, shutters and base panel for decorative laminates etc.
16mm, 19mm and 25mm.
|BWP BLOCK BOARD IS 1659 : 2004|
|Tests||ISI Requirement||Observed Value|
Dimensional changes caused by humidity
a) Changes, mm
from 65% RH to 90% RH
from 65% RH to 40% RH
b) Local Planeness
c) At the extreme range of humidity
+ 1mm Max
- 1mm Max
No de-lamination at the extreme range of humidity.
No de-lamination observed.
|Adhesion of the plies||Minimum pass standard||Excellent|
|Resistance to water (72 hours boiling)||No de-lamination after 72 hours boiling||No de-lamination|
|Resistance to Micro organisms||No appreciable sign of separation at edges||No separation at edges|
|Modulus of elasticity||Min. 5000 N / sq. mm||6050 N / sq. mm|
|Modulus of Rupture||Min. 50 N / sq. mm||61 N / sq. mm|