Lightweight structural panel

摘要

A lightweight structural panel comprises a foam core member. Adhered to one face of the core member is a pigmented plastic cover sheet having substantially the same plan configuration as the core member. The plastic sheet contains a mix of additives, antioxidants, and pigment coatings which prevent it from cracking, splitting and getting hard. In addition, the cover sheet has substantially the same response to changes in temperature and humidity as the core member such that the panel retains its original shape despite changes in temperature and humidity. In another embodiment both faces of the core member include a plastic cover sheet adhered thereto.