Composite material and method of making the composite material

Details Composite material and method of making the composite material Composite material and method of making the composite material

2011-04-26

2011-04-26

Vo, Hai (Department: 1788)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

C428S314400, C428S304400

Reexamination Certificate

active

07931963

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 CE/CT, CV/CTand CH/CTis about 0.25 to about 0.4 said one of CE/CT, CV/CTand CH/CThaving a compressive efficiency of at least 70% at a 60% strain, CE, CVand CHbeing 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 CTequals the sum of CE, CVand CH.

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