Specifications For Blockboard

1. Formaldehyde. According to national standards, the limit for formaldehyde emission from blockboard-measured via the climate chamber method-is E1 ≤ 0.124 mg/m³. Non-compliance regarding formaldehyde emissions in blockboard sold on the market generally falls into two categories: first, emissions exceed the limit, posing a clear threat to human health; second, products fall within the E2 grade (failing to meet the E1 standard) but are falsely labeled as E1 grade. Such mislabeling also constitutes non-compliance.
2. Transverse static bending strength. Transverse static bending strength and bonding strength reflect the blockboard's ability to bear loads and resist deformation under stress. There are three main reasons for failure to meet transverse static bending strength standards: first, defects or decay in the raw materials, resulting in poor core quality; second, substandard splicing techniques during production; and third, inadequate bonding.
3. Bonding strength. Bonding performance is primarily determined by three process parameters: time, temperature, and pressure. Additionally, the type and quantity of adhesive used influence formaldehyde emission levels.
4. Moisture content. Moisture content indicates the amount of water present in the blockboard. If the moisture content is excessive or uneven, the product may warp or deform during use, thereby compromising its performance.