Plywood

Plywood is arguably the most versatile and durable building material available, and an essential commodity in both interior applications and exterior construction. National Plywood has been a pioneering force in the manufacture of plywood for over six decades, setting benchmarks that have become accepted as the gold standard across the country. Over time, we have perfected the manufacture of plywood to provide National with a distinct advantage at every step. Our plywood is synonymous with quality, durability and reliability.

 

Plywood

Plywood is arguably the most versatile and durable building material available, and an essential commodity in both interior applications and exterior construction. National Plywood has been a pioneering force in the manufacture of plywood for over six decades, setting benchmarks that have become accepted as the gold standard across the country. Over time, we have perfected the manufacture of plywood to provide National with a distinct advantage at every step. Our plywood is synonymous with quality, durability and reliability.

 

Process

BWP GRADE
Parameter Prescribed Value Observed Value
Moisture Content 5-15% 6-10%
Adhesive of Plies Pass Standard Excellent
Mycological Test No-de-lamination Excellent
Glue Shear strength (N) a)Dry state 1350
b)In water 1000
a)Dry state 1300-1650
b)In water 1000-1400
Modulus of Elasticity(N/Sq mm) a)Along the grain 7500
b)Across the grain 4000
a)Along the grain 7500-9000
b)Across the grain 4500-5500
Modulus of rupture(N/Sq mm) a)Along the grain 50
b)Across the grain 30
a)Along the grain 55-75
b)Across the grain 40-60
Wet Bending Strength, MOE(N/Sq mm) a)Along the grain 3750
b)Across the grain 2000
a)Along the grain 4200-5500
b)Across the grain 2500-4000
Wet Bending Strength, MOR(N/Sq mm) a)Along the grain 25
b)Across the grain 15
a)Along the grain 25-40
b)Across the grain 20-35
Tensile Strength, (N/Sq mm) a)Along the grain 42
b)Across the grain 25
-Sum of both 85.5
a)Along the grain 55-80
b)Across the grain 40-70
-Sum of both 95-150
Retention of preservative(Kgs/cu m) 12.0 12.5-13.5

Boiling Water Proof (BWP) Marine Plywood

Marine plywood, named so for its use in ship-building and other marine applications, is waterproof, making it perfect for areas exposed to moisture, both inside and outside. This product is capable of handling alternating wet & dry conditions without the risk of delamination, swelling, warping and rotting, even when submerged. With our use of carefully selected Dipterocarpus and Shorea assamica timber that give it strength and minimize core gaps, BWP grade phenol formaldehyde (PF) resin that makes it waterproof, and preservatives between every layer using the glue line preservation (GLP) process that protects it from insect infestation, National’s BWP marine plywood is dimensionally stable and extremely durable. This product conforms to IS 710 specifications.

BWP GRADE
Parameter Prescribed Value Observed Value
Moisture Content 5-15% 6-10%
Adhesive of Plies Pass Standard Excellent
Mycological Test No-de-lamination Excellent
Glue Shear strength (N) a)Dry state 1350
b)In water 1000
a)Dry state 1300-1650
b)In water 1000-1400
Modulus of Elasticity(N/Sq mm) a)Along the grain 7500
b)Across the grain 4000
a)Along the grain 7500-9000
b)Across the grain 4500-5500
Modulus of rupture(N/Sq mm) a)Along the grain 50
b)Across the grain 30
a)Along the grain 55-75
b)Across the grain 40-60
Wet Bending Strength, MOE(N/Sq mm) a)Along the grain 3750
b)Across the grain 2000
a)Along the grain 4200-5500
b)Across the grain 2500-4000
Wet Bending Strength, MOR(N/Sq mm) a)Along the grain 25
b)Across the grain 15
a)Along the grain 25-40
b)Across the grain 20-35
Tensile Strength, (N/Sq mm) a)Along the grain 42
b)Across the grain 25
-Sum of both 85.5
a)Along the grain 55-80
b)Across the grain 40-70
-Sum of both 95-150
Retention of preservative(Kgs/cu m) 12.0 12.5-13.5

Boiling Water Proof (BWP) Marine Plywood

Marine plywood, named so for its use in ship-building and other marine applications, is waterproof, making it perfect for areas exposed to moisture, both inside and outside. This product is capable of handling alternating wet & dry conditions without the risk of delamination, swelling, warping and rotting, even when submerged. With our use of carefully selected Dipterocarpus and Shorea assamica timber that give it strength and minimize core gaps, BWP grade phenol formaldehyde (PF) resin that makes it waterproof, and preservatives between every layer using the glue line preservation (GLP) process that protects it from insect infestation, National’s BWP marine plywood is dimensionally stable and extremely durable. This product conforms to IS 710 specifications.


Boiling Water Resistant (BWR) Plywood

National’s BWR plywood is made of 100% premium quality Dipterocarpus and Shorea assamica timber bonded with PF resin combined with preservatives – giving it the same characteristics as our BWP plywood. While BWP grade plywood is preferred for exterior applications, BWR grade is more commonly used in interior spaces, particularly kitchens and bathrooms, although it can be used in exterior applications too. This product conforms to IS 303 specifications.

BWR GRADE
Parameter Prescribed Value Observed Value
Moisture content 5 to 15% 6 to 10%
Adhesion of plies Pass Standard Excellent
Resistance of Water Pass Standard Excellent
Modulus of Elasticity(N/Sq mm)
-Along the grain
-Across the grain
5000
2500
5500-6500
3000-4000
Modulus of Rupture(N/Sq mm)
-Along the grain
-Across the grain
40
20
50-60
60-70
Mycological test N.A. N.A.
Preservative treatment Optional Glue line fortified with preservative;
Finished panels are treated with
CCB preservative
BWR GRADE
Parameter Prescribed Value Observed Value
Moisture content 5 to 15% 6 to 10%
Adhesion of plies Pass Standard Excellent
Resistance of Water Pass Standard Excellent
Modulus of Elasticity(N/Sq mm)
-Along the grain
-Across the grain
5000
2500
5500-6500
3000-4000
Modulus of Rupture(N/Sq mm)
-Along the grain
-Across the grain
40
20
50-60
60-70
Mycological test N.A. N.A.
Preservative treatment Optional Glue line fortified with preservative; Finished panels are treated with CCB preservative

Boiling Water Resistant (BWR) Plywood

National’s BWR plywood is made of 100% premium quality Dipterocarpus and Shorea assamica timber bonded with PF resin combined with preservatives – giving it the same characteristics as our BWP plywood. While BWP grade plywood is preferred for exterior applications, BWR grade is more commonly used in interior spaces, particularly kitchens and bathrooms, although it can be used in exterior applications too. This product conforms to IS 303 specifications.

MR GRADE
Parameter Prescribed Value Observed Value
Moisture content 5 to 15% 6 to 8%
Adhesion of plies Pass Standard Excellent
Resistance of Water Pass Standard Excellent
Modulus of Elasticity(N/Sq mm)
-Along the grain
-Across the grain
4000
2000
4000-5000
2500-3500
Modulus of Rupture(N/Sq mm)
-Along the grain
-Across the grain
30
15
40-50
30-40
Mycological test No de-lamination Excellent
Preservative treatment - Glue line fortified with preservative

Moisture Resistant (MR) Plywood

National’s MR plywood has excellent resistant to moisture and is a commercial grade plywood ideal for interior applications such as wall paneling, furniture and fittings, interior door skins and ceiling linings – wherever exposure to moisture is low. While more economical than marine plywood, our MR grade product is also composed of 100% premium quality Dipterocarpus and Shorea assamica timber, bonded with the best quality Melamine Urea Formaldehyde (MUF) resin and fixed with preservatives in the glue lines to prevent insect infestation. This product conforms to IS 303 specifications

MR GRADE
Parameter Prescribed Value Observed Value
Moisture content 5 to 15% 6 to 8%
Adhesion of plies Pass Standard Excellent
Resistance of Water Pass Standard Excellent
Modulus of Elasticity(N/Sq mm)
-Along the grain
Across the grain
4000
2000
4000-5000
2500-3500
Modulus of Rupture(N/Sq mm)
-Along the grain
-Across the grain
30
15
40-50
30-40
Mycological test No de-lamination Excellent
Preservative treatment - Glue line fortified with preservative

Moisture Resistant (MR) Plywood

National’s MR plywood has excellent resistant to moisture and is a commercial grade plywood ideal for interior applications such as wall paneling, furniture and fittings, interior door skins and ceiling linings – wherever exposure to moisture is low. While more economical than marine plywood, our MR grade product is also composed of 100% premium quality Dipterocarpus and Shorea assamica timber, bonded with the best quality Melamine Urea Formaldehyde (MUF) resin and fixed with preservatives in the glue lines to prevent insect infestation. This product conforms to IS 303 specifications

Flexiply

Our futuristic R&D team has devised the innovative Flexiply, or flexible plywood, transforming sturdy, 100% hardwood timber into bendable plywood sheets that can be manipulated into any shape without chipping, cracking or peeling, thereby retaining their strength and durability. Flexiply can be provided with or without treatment of face, and can be stained, painted, plastered or veneered as per requirements.


Film Faced (Shuttering) Plywood

                         Shuttering plywood is highly densified waterproof plywood with a smooth film coating on either face, hence the name film faced. Manufactured with glue line preservatives and bonded with PF resin in each layer, our product is resistant to corrosion, insects, extreme temperatures and water. Its durability, load bearing capacity and ease of application makes it perfect for use in cement formworks and construction. It is used in the casting of ceilings, walls, slabs, beams, pillars, etc., and to build factories, warehouses, sewers, bridges and other foundation work. Available in thicknesses of 12mm (weighing 30 and 34 kgs) and 18mm (weighing 50 kgs), this product is as per IS 4990 specifications. 

Flexiply

Our futuristic R&D team has devised the innovative Flexiply, or flexible plywood, transforming sturdy, 100% hardwood timber into bendable plywood sheets that can be manipulated into any shape without chipping, cracking or peeling, thereby retaining their strength and durability. Flexiply can be provided with or without treatment of face, and can be stained, painted, plastered or veneered as per requirements.


Film Faced (Shuttering) Plywood

Shuttering plywood is highly densified waterproof plywood with a smooth film coating on either face, hence the name film faced. Manufactured with glue line preservatives and bonded with PF resin in each layer, our product is resistant to corrosion, insects, extreme temperatures and water. Its durability, load bearing capacity and ease of application makes it perfect for use in cement formworks and construction. It is used in the casting of ceilings, walls, slabs, beams, pillars, etc., and to build factories, warehouses, sewers, bridges and other foundation work. Available in thicknesses of 12mm (weighing 30 and 34 kgs) and 18mm (weighing 50 kgs), this product is as per IS 4990 specifications.