Abstract: A layered arrangement is fabricated by deposit on a mold surface to form a porous foam core of coated microballoons which is assembled within a sandwich between layers of fibrous skin. The sandwich supported on the mold surface is then is sealed within a film enclosure through which a one-shot infusion of liquid resin is performed. After curing and hardening of the infused resin, the film enclosure is removed from the sandwich to expose a multilayered structure.

Abstract: A slurry mixture of alcohol, particles and a binding agent undergoes partial solidification and curve-shaped molding in sequence on flat and curved molding surfaces respectively, to produce a curve-shaped foam product suitable for further fabrication as components of curved structures. The flat molding surface is lined with a release cloth on which the slurry initially undergoes partial solidification and is then molded as flexible core material transferred to the curved molding surface for additional shape molding purposes while alcohol removal is completed by evaporation followed by resin filling infusion to form a composite core as the curve-shaped foam product.

Abstract: A protective device for a container containing toxic or hazardous materia includes a shell, a mechanism positioned in the shell for sealing a puncture in the container so as to prevent release of the toxic materials from the container and a mechanism for attaching the shell to the container.