Patent ID: 6015611
Filing Date: 2000-01-18
Classification: B27N,B29B,B29K,C08J,C08K,C08L,Y02W,Y10T

Abstract:
A composite thermoplastic pellet, capable of formation into a structural profile or member, which pellet consists essentially of a thermoplastic cylindrical extrudate having a width of about 1 to 5 mm, a length of about 1 to 10 mm, the thermoplastic pellet composite composition consisting essentially of:(a) about 40 to 70 wt. % a thermoplastic polymer comprising vinyl chloride; and(b) about 30 to 50 wt. % of wood fiber having a minimum aspect ratio of about 1.8 to provide structural properties to the composite;wherein the polymer wood fiber are mixed at elevated temperature and pressure such that the fiber comprises less than about 8 wt-% water, the pellet comprises an intimate admixture of wood fiber dispersed throughout the continuous thermoplastic polymer phase, the pellet is a recyclable thermoplastic and the composite has a Young's modulus of at least about 800,000 psi.