Metallic rod/bar covering method for highway barriers, involves providing specific component with expansion agent, in between walls of mold and rod, which when expanded and solidified form deformable covering over rod

摘要

A metallic rod/bar (2) is arranged inside a mold where integral polyurethane injected with an expansion agent is provided between the walls of the mold and the rod/bar. The polyurethane with expansion agent, when expanded and solidified forms a deformable external covering (3) over the rod/bar. An Independent claim is included for metallic piece with protective covering.