COMPOSITE CONSTRUCTION ELEMENTS WITH THREE-DIMENSIONAL FRAMEWORK COMPRISING AT LEAST ONE MATRIX OF CELLULAR MATERIAL AND METHOD FOR THE PRODUCTION THEREOF

摘要

The invention relates to a composite construction element of the type having at least one matrix made of cellular material and at least one internal and/or external armature layer consisting of plywood. The matrix or matrices are made of rigid foam having a compression resistance higher than 1 kg/cm2. There is provided between the matrix or matrices (2) and the armature or each of the armatures of plywood (3) a transition layer consisting of a composite material of rigid foam/polyurethane (4) having a thickness higher than that of the associated plywood armature and preferably comprised between 10 and 20 mm.