BWR (Boiling Water Resistant) Grade Plywood quality checking and boiling test

BWR (Boiling Water Resistant) Grade Plywood

 BWR Grade Plywood is boiling water resistant plywood. It is manufactured using rotary peeled smooth veneer. The veneers are tightly cut and bonded using synthetic compounded phenol formaldehyde resin. BWR  grade is bonded with improved and indigenously compounded phenol formaldehyde synthetic resin under controlled temperature and pressure. The tough treatment given to this BWR GRADE PLYWOOD makes it sturdy in which the Veneers are treated with preservatives. Glue line is fused with chemicals for borer and termite protection, while the finished panels are treated with acid copper chrome and boric acid compound. does not swell even after it is immersed in hot water for 8 hours boiling and therefore is ideal to be used at hot, humid and moist locations. The result is a high quality ply that can resist boiling water, cold water, climate variations including termite and borer attacks.

 

Features

  • tick1Manufactured using selected logs
  • tick1Follow a balanced construction
  • tick1Bonded using synthetic compounded phenol formaldehyde resin
  • tick1BWR grade plywood withstands 8 to 12 hours of boiling water
  • tick1Pre press technology is used to ensure uniform moisture and proper penetration of glue
  • tick111 ply construction is followed for balance and stability
  • tick1Faces veneers are 0.55mm thick

TECHNICAL SPECIFICATIONS

Density gms/cc 0.65 to 0.70
Moisture Content 5% to 10%
Glue Sheer Strength (Dry State) More than 1350N
Water Resistance Test More than 1000N
Mycological Test More than 1000N
Boiling Water Test No Delamination even after boiling for 72 hrs
Glue Adhesion Excellent
Specific Gravity 0.70 to 0.85
Screw Holding Strength More than 250 kgs
Nail Holding Strength Normal to face More than 60 kgs
Water Absorption Less than 3.5%
Tensile Strength 600 kg/sq.cm

 (BWR) Grade Plywood

Features

  • Resistant to boiling water, moisture, dry heat, termites, insects
  • Stable in all weather conditions

Usages

  • Furniture partitions
  • Panelling
  • Cavity Flooring’
  • Panelled Doors
  • Hoarding False ceilings
  • Exterior and semi -exterior applications

Technical Specifications

Sl. No. Tests Parameters
1 Thickness available (mm) All thickness up to 40 mm
2 Dimensions available (mm x mm) Max 2440 x 1220
3 Density (Kg/m3) 800
4 Water resistancea)      Boil cycle (3 Cycle 8 Hrs. Boiling & Drying Pass 3 Cycle
5 Maisture content (%) 8-10%
6 Water resistance > 110
7 Glue Shear Strength (kg) – Dry > 135
8 Glue Shear Strength (kg) – Mycological > 110
9 Adhesion of ply Excellent
10 Water absorption test < 5%
11 Screw holding strength (kg) > 275
12 Nail holding strength > 150

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