IS 1328:1996 is the Indian Standard (BIS) for veneered decorative plywood -specification. This standard prescribes the requirements for materials, manufacturing, dimensions, and performance testing (such as adhesion and moisture content) for veneered decorative plywood used for interior decoration, paneling, and furniture.
Veneered Decorative Plywood -Specification
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Formaldehyde Emission Control | Specified by adhesive type (e.g., Phenol Formaldehyde for BWR, Urea Formaldehyde for MR). No quantitative emission limit. | Mandatory compliance with quantitative limits, e.g., ≤ 0.05 ppm (CARB P2 / TSCA Title VI). | ANSI/HPVA HP-1-2020 |
| Moisture Content at Dispatch | 5% to 15% | Plywood shall have a moisture content between 5% and 12% at the time of leaving the factory. | BS EN 636:2012+A1:2015 |
| Glue Adhesion Shear Strength (MR Grade equivalent) | Average load > 1000 N after 3h soak in 60°C water (for MR grade, per IS 303). | Mean shear strength ≥ 1.0 N/mm² after 24h soak in 20°C water (for Bonding Class 2). | BS EN 636 (referencing EN 314-2) |
| Water Resistance Test (BWR Grade) | No delamination after immersion in boiling water for 72 hours (per IS 303). | 3 cycles of 4-hour boil followed by 20-hour drying at 63°C; must meet bond-line durability requirements. | ANSI/HPVA HP-1-2020 |
| Thickness Tolerance (on a 6 mm panel) | ± 10% (i.e., ± 0.60 mm) (per IS 303) | ± 0.4 mm (for sanded panels ≤ 6.5 mm) | BS EN 315 (referenced by BS EN 636) |
| Thickness Tolerance (on a 18 mm panel) | +4%, -8% (i.e., +0.72 mm / -1.44 mm) (per IS 303) | ± 0.9 mm (for sanded panels > 6.5 mm and ≤ 21 mm) | BS EN 315 (referenced by BS EN 636) |
| Standard Test Conditioning | 27 ± 2 °C and 65 ± 5% Relative Humidity | 20 ± 2 °C and 65 ± 5% Relative Humidity | BS EN 326-1 |