Softwood vs. Hardwood Pressing Dynamics
Not all sawdust yields the same structural integrity. In the lifecycle of a molded wood pallet, the original timber cell structure dictates how much hydraulic pressure is required to form a dense, smooth surface. Producing pallets strictly from hardwood chips (like oak or beech) generates superior stiffness but exerts a massive toll on the H13 steel molds. Conversely, pure pine softwood requires less pressing time but often needs higher urea-formaldehyde resin ratios to meet the 1.5-ton dynamic load standard.
Engineered Core Mixtures
The optimal operating procedure is an engineered mix. By blending 60% softwood with 40% hardwood sawdust, the machine operator achieves the best of both worlds: the natural resins and fast-curing properties of pine, reinforced by the dense cellular structure of hardwood.
Implementation Boundaries
Dust vs. Shavings: The raw material cannot be pure fine dust. The ideal matrix requires wood shavings (approx. 3-5mm) intertwined with smaller particles to create a structural cross-binding effect under the heat of the hydraulic wood pallet press.