Patent ID: 6015612
Filing Date: 2000-01-18
Classification: B27N,B29B,B29K,C08J,C08K,C08L,Y10T

Abstract:
A thermoplastic polymer composite composition capable of formation into a structural profile or member, the thermoplastic composite composition comprising:(a) an effective amount, sufficient to form a continuous phase in the composite, of a thermoplastic polymer composition comprising vinyl chloride; and(b) an effective amount of wood fiber having a minimum aspect ratio of about 2 to provide structural properties to the composite;wherein the polymer and wood fiber are mixed at elevated temperature and pressure such that the composition comprises less than about 8 wt-% water, the composition comprises an intimate admixture of wood fiber dispersed throughout the continuous thermoplastic polymer phase such that the polymer wets and penetrates into the interior volume of wood fiber cells, the composition is a recyclable thermoplastic and the composite has a Young's modulus of at least about 500,000 psi.