SRG Wistara

WISTARA BLOCK BOARD

BWP Grade

Born tough as per IS 1659: 2004

Wistara block board of BWP grade is an exterior grade boiling water proof block board manufactured carefully with cross band from the tropical hard wood and pine seasoned wood as plumber core. Wistara block board is bonded with superior quality phenolic synthetic resin of BWP grade, manufactured at our own modern resin manufacturing plant.

The process and parameters of the resin manufacturing are controlled as suggested in 848: 1996.

Wistara BWP grade block board are treated with preservative chemicals at different stages:

  • First stage : Lumber and veneer are treated with boron containing chemical solution.

  • Second stage : Glue line is fortified with non-leachable organophosphorus compound.

  • Third stage : Boron treatment along with copper and chromium.

Wistara block board is free from any type of attacks by destroying microorganism.

Special features:

  1. Standard thickness - 19mm, 25mm, specific thickness and double Cross bands block board are also available against specific Order.

  2. Standard sizes. 8’x4’,7’x4’,6’x4’, 8’x3’,7’x3’,6’x3’.

Technical details

Name Of The Properties

Result obtained

Specified in is 1659 ;2004

1.Moisture Content

10 %

5-15%

2.Specific Gravity

600 kg/cbm

Na

3.Resistance To Water

Pass standard

Shall be minimum pass standard.

4.Adhesion Of Ply

Pass standard

Pass

5.Modulus Of Rupture

52 n/mmsq

50 n/mm

6.Modulus Of Elasticity

5200 n/mmsq

5000n/mmsq

7. Spot Test

Penetration of Borax Boric Acid

Shall show through

Penetration of preservative chemical

8.Water Absorbtion

< 2 %

Na

9. Screw Holding

> 1000n

Na

10 Nail Holding

500n

Na

MR Grade

Born tough and excellent as per IS 1659: 2004

Wistara MR block board is an interior grade moisture resistance block board manufactured carefully with tropical hard wood as cross band and pine seasoned wood as plumber core.

Wistara MR block board is bonded with superior quality synthetic amino plus resin manufactured in our own modern resin plant.

Wistara MR block board are born with suitable protection by preservative chemicals to all its battens. The adhesive used, is mixed with suitable organophosphorus compound.

Wistara MR block board is free from the attack of any destroying microorganism.

Special features:

  1. Standard thickness: 19mm. 25mm,

  2. Sizes: 8’ x4’, 7’x4’,6’x4’,8’x3’,7’x3’,6’x3

  3. Widely used partition, shutters, wardrobe, frame, roofing

Technical details:

Name of Properties

Result Obtain

Specified 1659:2004

  1. Moisture Content

10 %

5- 15%

  1. Resistance to Water.

Pass standard

Shall be pass standard

  1. Adhesion of Ply

Pass standard

Pass standard

  1. Modulus of Rupture

43 n/mmsq

40 n/mmsq

  1. Modulus of Elasticity

4200 n/mmsq

4000n/mmsq

  1. Spot Test

Penetration of borax, boric acid

Show penetration preservative.

  1. Specific Gravity

600 kg /cbm

Na

  1. Screw Holding

1100n /mmsq

Na

  1. Nail Holding

60 n/mmsq

Na

  1. Water Absorption

<2%

Na