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Block Board
Carbon Block Boards are made in Moisture Resistant & Boiling Water Resistant Grade,duly bonded with Melamine Urea Formaldehyde & Fortified Phenol Formaldehyde Synthetic Resin respectively.
Carbon block board is premium quality board with high resistant properties against borer and termite attacks. All the three components of this block board I.e. Face Veneer, Core Veneer & wooden battens are well matched. The wooden battens are thoroughly seasoned in scientifically run seasoning kiln plants and then cut with great precision to obtain uniform thickness.
These battens are systematically arranged and utmost care is taken to avoid any extra gap between the battens.Regular test are conducted to maintain the quality of block boards as per the standards of IS: 1659.
Suggested uses: Furniture and partitions, panels, beaded doors, interiors of portable houses, bins, racks, Where panels of higher thickness with greater bending resistance is required.
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Test
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ISI Requirement
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Observed Value
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Dimensional Changes caused by Humidity
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a) Changes, mm
from65% RH to 90% RH
from65% RH to 40% RH
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+ 1mm Max
- 1mm Max.
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+ 0.50 mm
- 0.55 mm
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b) Local Planeness
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< 1/150
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< 1/175
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c) At the extreme range of humidity
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No de- lamination at the extreme range of humidity
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No de-lamination observed
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Adhesion of the plies
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Minimum pass standard
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Excellent
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Resistance to water (72 hours boiling)
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No de- lamination after 72 hours boiling
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No de-lamination
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Resistance to Micro organisums
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No appreciable sign of separation at edges.
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No separation at edges
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Modulus of Elasticity
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Min. 5000 N / sq. mm
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6050 N / sq.mm
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Modulus of Rupture
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Min. 50 N / sq. mm
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61 N / sq.mm
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