Patent ID: 6605326
Filing Date: 2003-08-12
Classification: B29C,Y10T

Abstract:
An article with a hollow core, comprising:a multicell honeycomb sheet structure having inner and outer surfaces, a fibrous outer reinforcing region that covers the outer surface of said honeycomb sheet structure, and foam material that penetrates said sheet structure and said fibrous outer region; said fibrous outer region including a cloth layer having multiple threads and holes between the threads, and inner and outer tissue layers lying respectively against inner and outer surfaces of said cloth layer with each tissue layer having multiple threads and pores therebetween, with said holes having an average cross-sectional area greater than twice the cross-sectional area of said pores; a reinforced fibrous inner region that includes an inner cloth layer having a thickness that is a plurality of times the thickness of each of said tissue layers, said inner cloth layer having multiple threads and holes therebetween, said inner cloth layer lying directly against the inner surface of the honeycomb sheet structure, the individual holes of said inner cloth layer having at least twice the cross-sectional area of individual pores of said tissue layers, and said quantity of foam material penetrating said inner region.