| abstract |
An improved energy absorbing member comprising, an thermoplastic cellular polymer in contact with a structural element such as a metal guard rail or automotive door, wherein the cellular polymer has an average cell size of at least about 0.75 mm and at least one of C E /C T , C V /C T and C H /C T is about 0.25 to about 0.4 said one of C E /C T , C V /C T and C H /C T having a compressive efficiency of at least 70% at a 60% strain, C E , C V and C H being the compressive strength of the cellular polymer in each of three orthogonal directions E, V and H where one of these directions is the direction of maximum compressive strength in the foam and C T equals the sum of C E , C V and C H . |