Reinforcement of foam composites.

摘要

A foam composite 10 that is especially useful as an insulating board comprises first and second opposed corrugated skins 14 having corrugations with inwardly facing spices, one of each of the skins being provided with a mat of porous or apertured reinforcement material 30 extending across the spices of the corrugations and the foam 24 extending through the pores of apertures of each mat to fill the spaces defined by the inwardly facing surfaces of the corrugations and embed the reinforcement material within the cured foam. As an alternative to a continuous mat a plurality of spaced apart strips of reinforcement material may be used. The mat or strips reinforce the skin and resist dimensional change due to shrinkage of the foam core during storage.