TIMBERSTRAND LSL IS A WOOD BASED BILLET MADE BY LAMINATING LONG WAFERS OF WOOD TOGETHER. THE LONG WAFERS ARE TREATED WITH A PHENOLIC OR ISOCYANATE BASED CHEMICAL AND ALIGNED IN ONE DIRECTION TO FORM A MAT. THE MAT IS THEN HEATED AND COMPRESSED BY A HYDRAULIC STEAM PRESS. THE MAT OF WAFERS IS BONDED 35 TO 80 PER CENT TO MANUFACTURE A STRONG WOOD COMPOSITE. THIS DENSIFIED WOOD-BASED PRODUCT HAS A MECHANICAL STRENGTH THAT IS INCREASED OVER THAT FROM WHICH IT WAS MADE.

CLASSIFICATION IS DETERMINED ACCORDING TO GIR1. HS NOTE 4413