Patent ID: 8808485
Filing Date: 2014-08-19
Classification: B29C,B29K,B29L,B32B,C08G,Y10T

Abstract:
1. A method for the production of an environmentally friendly polyurethane molded article, consisting of the steps of: a) applying a first fiber material having a first surface and a second surface to a first surface of a core material; b) applying a second fiber material having a first surface and a second surface to a second surface of the core forming a sandwich structure having a first and a second surface wherein the first and second fiber material may be the same or different; c) applying a polyurethane-forming mixture comprising an isocyanate component and a polyol component comprising one or more natural oil based polyol to the first and a second surface of the sandwich structure forming a polyurethane-forming mixture coated sandwich structure; d) placing the polyurethane-forming mixture coated sandwich structure into a mold; e) shaping the polyurethane-forming mixture coated sandwich structure in a mold at a temperature between 100° C. and 160° C. while curing the polyurethane-forming mixture to form a molded polyurethane molded article; f) removing the molded article from the mold; and g) optionally, post-treating the molded article.