Abstract: An impact resistant composite structure is constructed of a facing portion designed to blunt and fragment an armor piercing-type bullet and absorbs some of the bullet's impact force, and a base layer designed to absorb and contain the remaining impact force of the bullet fragments. The facing layer includes a plurality of closely spaced ceramic tiles embedded in an adhesive elastic resin having a suspended mixture of polymeric microspheres, which isolate each of the ceramic tiles.

Abstract: An improved rigidized resinous foam core sandwich structure is formed by the following method:Threading a length of high tensile strength fiber through the fiber glass sheets placed contiguous the opposite longitudinal faces of a flexible open-celled foam sheet and through the foam sheet in a manner to provide a continuous series of fiber segments which interconnect the fiber glass sheets;Impregnating the flexible open-celled foam sheet and the fiber glass sheets with a settable resin containing a curing agent; andMolding the foam core sandwich into the desired shape and holding it in place while the resin cures.

Abstract: A reinforced silicone rubber mold composite is formed by bonding a silicone mold member to a rigid laminated member. The silicone rubber mold member is cast to conform to a desired pattern and its back surface is bonded to a flexible open-celled foam by means of a layer of the silicone rubber being impregnated into a layer of open cells of the foam which are adjacent to the back surface of the silicone rubber mold member. The laminated member consists of the flexible open-celled foam having the layer of open cells impregnated by the silicone rubber and the remaining open cells impregnated by a cured epoxy resin.