Patent ID: 6265037
Filing Date: 2001-07-24
Classification: B29C,B29K,C08F,C08L,E04F,E06B,Y10T

Abstract:
A weatherable, mechanically stable thin walled complex hollow profile comprising, a composite comprising:(a) greater than about 25 wt % of a polylefin polymer comprosition having a melt index of about 1.2 or about 2 gm/10 min, a melting point of about 145.degree. C. to 158.degree. C.; and(b) greater than about 50 up to 75 wt % of a wood fiber, the fiber having a moisture content of less than 5000 parts of water per million parts of the profile, a particle size of about 100 to about 2000 .mu.m and an aspect ratio of about 1:2 to about 1:5;wherein the profile comprises an extruded complex hollow member having a defined support direction and a wall thickness of less than about 5 mm, the tensile modulus of the profile is greater than about 5.multidot.10.sup.5 psi, the heat distortion temperature of the profile in the defined support direction is greater than about 75.degree. C. at 264 psi (ASTM D 696).