B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 47/02 (2006.01) E01B 3/10 (2006.01)
Patent
CA 2398938
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.
L'invention concerne un produit en bois composite comprenant un noyau en bois (40) et une couche extérieure en matériau thermoplastique, de préférence en polyéthylène linéaire haute densité, laquelle encapsule le noyau de bois afin de le protéger. On obtient ce produit en bois composite au moyen d'un procédé d'extrusion consistant à pousser le noyau en bois dans une extrudeuse de traverses (72) dans laquelle la couche de revêtement (46) est de préférence moussée.
Niedermair Siegfried
Riches Mckenzie & Herbert Llp
LandOfFree
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