Why Cold Pressing is Used for the Veneer Surface Layer of Engineered Wood Flooring Instead of Hot Pressing.
The face layer of engineered parquet is bonded using cold pressing rather than hot pressing, primarily to preserve the appearance and quality of the precious veneer while avoiding potential defects.
Core Reason: Hot Pressing Poses Significant Risks to Solid Wood Veneers(from longitudinal slicer or frame saw)
Imagine a precious and thin solid wood face veneer—it is the flooring's showcase feature, but also quite delicate. Hot pressing can cause irreversible damage in the following ways:
1. Preventing Adhesive Bleed-Through (Glue Penetration);
2. Preventing Wood Discoloration hot Pressing
3. Reducing Internal Stress to Prevent Warping and Deformation.
4. Preserving the Wood's Natural Texture
The answer lies in a two-step pressing process:
Step One: Hot Pressing (Manufacturing the Core). The core of engineered wood flooring (typically made from cross-laminated layers of rotary-cut veneer) is produced using hot pressing. This process rapidly cures the adhesive, enables high production efficiency, and creates a strong, stable "core board." This step occurs before bonding the precious face veneer. ANJN TEC hot press machines working daylights including 8-35 platen layers, equipped with a full automatic loading and unloading system.
Step Two: Cold Pressing (Bonding the Face Veneer), Once the sturdy core is completed, the precious solid wood face veneer is bonded to its surface using cold pressing technology. Although cold-setting adhesives require longer curing times, batch production is achieved through stacking and curing.
Conclusion:
In engineered wood parquet flooring production, cold pressing is a protective and refined processing technique for the precious solid wood face veneer. It sacrifices some production efficiency in exchange for absolute assurance regarding the final product's aesthetics, stability, and quality. This represents a smart choice—"using the best steel on the blade's edge." Grade of veneer,grade of timber,grade of products.