Abstract: A machine suitable for fabricating a core material of resinated filaments has a frame having attachment points for filaments arranged linearly and a number of rods spaced apart and substantially parallel to the attachment points. The rods have one or more holes capable of receving a filament, and the rods are capable of displacement parallel to the plane of the attachment points. There is also a filament supply for passing filament from the attachment points via the rods, and a set of formers having pins capable of being located between the separated filaments following displacement by the rods. By operation of the machine and successive insertion of former, a shaped openwork structure of resinated filaments may be fabricated and which may be cured to produce the core material.

Abstract: A structural panel having a core of a phenolic foam plastics material surrounded by a woven fibre cloth impregnated with a phenolic resin. In the case of large panels, internal stiffeners may be used to improve the structural rigidity. Also the panels may have an armour layer to give the panel bullet and fire resisting properties. The armour layer may be external or internal to the panel and may be for example an alumina or a ceramic tile.

Abstract: Pipes or pipe fittings that are fire resistant and electrically conducting are formed by filament winding of a fire resistant, electrically conducting polymeric composition that includes 2 to 8% by weight of electrically conducting carbon black uniformly dispersed throughout the composition.