Composite made of randomly bonded polymer fiber loops and polyurethane foam

Abstract

Provided is a composite comprising, a polyurethane foam, and a three-dimensional loop (3DL) preform comprising a plurality of randomly bonded thermoplastic fiber loops, wherein the 3DL preform is asymmetrically embedded in the polyurethane foam, with the voids of the fiber loops partially or completely filled with the polyurethane foam, and wherein the composite has an SAG factor of no less than 3.2, wherein the SAG factor is defined as the ratio of 65% Indentation Force Deflection (IFD) to 25% IFD. Also provided are method of preparing and use of the same.

Dependencies are inferred from the claim text.