Patent ID: 6855440
Filing Date: 2005-02-15
Classification: B29C,E04F,Y10T

Abstract:
1. A process for manufacturing a composite structural product having an established exterior dimensional profile and made from thermoplastic and other materials, the process comprising the steps of: forming a feedstock, to which a mineral is blended, by mixing about 1 to 3 percent, based on the total weight of said feedstock, of a pigment with a thermoplastic polyethylene-type polymeric compounds; introducing into an extruder at an effective temperature and extruding therefrom a blended homogeneous mixture having about 90 to 95 percent, based on the total weight of said mixture, of said thermoplastic polyethylene-type nolymeric compound, and having about 5 to 10 percent, based on the total weight of said mixture, of said mineral, and said pigment; introducing said extruded homogeneous mixture into a die having an established dimensional profile; and forming from said die a structural product.