STRUCTURAL FOAM, SANDWICH PANEL AND MANUFACTURE THEREOF

摘要

A method of producing a body of structural thermoplastic foam, the method comprising the steps of: a. providing a plurality of foam elements; b. contacting a face of each foam element with a heated plate having a contoured surface having convex and concave portions, the heated plate melting at least a portion of the face to provide a correspondingly contoured molten layer having concave and convex portions; and c. welding together the faces of adjacent foam elements to form the body by bringing opposed complementary contoured molten layers into mutual contact, the welding forming a contoured weld line having convex and concave portions.