Foam padding material, useful in mattresses and upholstery, with single-phase compression behavior

摘要

Foam padding material comprises one or more layers of open-celled foam for which the product (P) of cross-sectional area (A) and compression resistance (R) for any point x between 0 and h (the uncompressed height of the foam) varies linearly with x. Foam padding material comprises one or more layers of open-celled foam for which the product of cross-sectional area (A) and compression resistance (R) for any point x between 0 and h (the uncompressed height of the foam) varies linearly with x according to the following mathematical expression: (P)x = (A)x /* (R)x = a /* (h-x) where a is a constant.