Compression moulding a laminated article

A multi-layer article comprising a complex shaped stack of reinforced plastic layers is formed by compression moulding, the layers being fastened to one another prior to the application of pressure in the moulding process, so that lateral displacement of the layers is prevented. A stack of layers of material is impregnated with a thermosetting resin, and after the fastening together of the layers, the resin is cured by heating whilst the pressure is applied to urge the layers towards one another and compress the stack. Preferably, layers of dry glass cloth are layered in a mould cavity, the layers having been stitched together to produce a multi-layer laminate which fills the mould cavity, liquid thermosetting resin is injected, preferably under pressure, into the closed mould cavity, and finally heat and pressure are applied to cure the liquid thermosetting resin. This method may be used to produce a complex shaped article of variable thickness. The method is particularly suited to the manufacture of security panelling 11 for providing bullet-proof protection in premises which handle valuable items such as cash, since the method allows the formation of complex shaped articles without detracting from their ballistic performance. It may also be used in the manufacture of land, marine or air vehicles.