Pragati block board is a compound wood board made of uniform strips of wood, placed end to end in adjacent columns. They are then sandwiched between two thick veneers of hardwood (usually) and finally glued under a tremendous amount of heat and pressure.
There are several advantages of this product which has made it a reliable and time-tested weapon in the arsenal of designers and manufacturers.
| Applications | : | Furniture and partition, panels, beaded doors, interiors, interiors of portable houses, bins and racks. |
| Thickness | : | 19mm, 25mm |
Features
Lightweight
Economical
Resists sagging and warping
Resists borer and termite attacks
Uniformly stable and very strong
Poor conductor of heat, sound, and electricity
Easy to handle
Easy to reclaim and reuse
Easy to work with under water
Available in many size and thickness categories
TECHNICAL SPECIFICATIONS
|
|
Test |
ISI Requirements |
Observed Values |
|
1 |
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. <1/150 No de-lamination the extreme range of humidity |
+0.50mm -0.55 mm <1/175 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 |
6050N/ sq.mm |
|
6 |
Modulus of rupture |
Min 50N / sq.mm |
61 N/ sq.mm |
|
7 |
Spot test |
Entire penetration of preservative chemicals through batten |
Satisfactory |
WhatsApp us