IS 3513 (Part 3) : 1989
Resin treated compressed wood laminates (compregs) – For general purposes
1. Summary about Resin Treated Compressed Wood Laminates (Compregs) – For General Purposes
Resin treated compressed wood laminates for general purposes are engineered materials produced by impregnating compressed wood with resin under heat and pressure. They are used in mechanical, structural, and general industrial applications where strength, dimensional stability, and durability are required.
2. Why BIS Certificate is Mandatory for Compregs – General Purposes
BIS certification is mandatory to ensure consistent material quality, mechanical strength, and performance reliability. Substandard laminates can crack, warp, or fail under load and environmental exposure.
3. What is BIS Certified for Resin Treated Compressed Wood Laminates – General Purposes
BIS certification confirms conformity with the applicable Indian Standard issued by the :contentReference[oaicite:0]{index=0} through testing of density, mechanical properties, moisture resistance, and dimensional stability.
Tests required for Resin Treated Compressed Wood Laminates (Compregs) – For General Purposes
| Title | Mandatory/Optional |
|---|---|
| Timber | Required |
| Synthetic Resin | Required |
| Varnishes | Required |
Dimension and Tolerances
| Title | Mandatory/Optional |
|---|---|
| Boards | Required |
| Rods | Required |
Physical properties
| Title | Mandatory/Optional |
|---|---|
| Specific Gravity | Required |
| Moisture content and volatile matter | Required |
Mechanical Properties
| Title | Mandatory/Optional |
|---|---|
| Tensile Strength | Required |
| Static Bending Strength | Required |
| Compressive Strength: Parallel to laminae & Perpendicular to laminae | Required |
| Shear Strength: Parallel to grain and laminae (edgewise) & Perpendicular to grain and perpendicular to laminae (flatwise) | Required |
| Impact strength (unnotched sample): Perpendicular to laminae & Parallel to laminae | Required |
| Hardness (Rockwell H Scale) | Required |
| Workmanship and finish | Required |
4. Benefits of BIS Certification for Compregs – General Purposes
- Ensures uniform material quality
- Mandatory for regulated industrial applications
- Improves mechanical strength and durability
- Reduces risk of material failure
- Enhances buyer and manufacturer confidence