Composite panel with a foamed plastic core

摘要

The present invention relates to an improved composite panel that is suitable for architectural and display applications and an advantageous method for making the composite panel. The composite panel comprises a foamed plastic core and two metallic skin layers bonded to the plastic core. The composite panel exhibits an effective bond strength sufficient to prevent peeling of the skin layers under normal use conditions, at least one visually flat surface substantially free of surface defects, and a stiffness to weight ratio of at least about 500 lbf-in/lbm/ft2.