| 摘要 |
<p>A composite timber product having a wooden core (40) and an outer layer of thermoplastic material, preferably Linear High Density Polyethylene, encapsulating the wooden core to protect the same. The composite timber product is produced by an extrusion method involving pushing the wood core through a crosstie (72) extruder in which the coating layer (46) is preferably foamed.</p> |
