E.i. Dupont De Nemours and Company

Alcoa Inc.

Reynolds Metals Company

Karl-Heinz Johannes Reilmann

Jeffrey Allen Chambers

Stephen Robert Tanny

Jeffrey Alan Hanks

Sassan Hojabr

Robert Preston Spears

Samuel W Chastain

Joe C Peace, Jr

Burwell Lewis Lafoon, Jr

A composite building panel that includes a fabric reinforcing sheet between one of the metal skins and the core of the panel. The fabric reinforcing sheet, which is preferably made from aramid fibers improves the impact resistance and penetration resistance of the building panel without substantially increasing weight and without adding fuel content to the panel system.

Impact resistant building panels

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 lb -in/lb /ft .

Composite panel with a foamed plastic core

Growing community of inventors

Eastman, GA, United States of America

Karl-Heinz Johannes Reilmann