Abstract: A device for the production of anodized aluminum or aluminum alloy foil including a strip of foil, an electrolyte bath with a plurality of cathodes therein and an entry point thereto, and an anode roll spaced from the entry point, wherein the effect of the cathodes is increased with increasing distance from the entry point.

Abstract: An improved lightweight, flame resistant composite panel is disclosed which is readily shaped at room temperature without the necessity of machining. The composite panel comprises a foamed rigid thermoplastic core sandwiched between a pair of metallic layers. The thermoplastic core contains inorganic fillers in powder form to add further flame resistant characteristics to the composite panel. The metallic layers are bonded to the core by means of a thin layer of adhesive which exhibits good strength at elevated temperatures.

Abstract: A composite material for graphical applications, in particular for nameplate production and having foil of aluminium or one of its alloys stuck on to a support foil. This aluminium foil bears on its side facing away from the supporting layer an aluminium oxide layer, which is thick by comparison with the thickness of the aluminium foil, on top of which there is a further layer of a light sensitive plastic.

Abstract: A transfer medium, made, for example, of paper, is imprinted with sublimable dispersion colorants by halftone printing methods, and is suitable for sublimation heat transfer printing on non-sealed anodized aluminum via the trichromatic principle. The three basic colors used for this purpose are yellow, magenta and cyan. The transfer half lives of these basic colors at 200.degree. C. lie between 3 and 10 seconds, and the specific weight of each of the basic colorants differs from that of the average of the combined colorants by not more than 10%.

Abstract: A composite material for graphical applications, in particular for nameplate production and having foil of aluminium or one of its alloys stuck on to a support foil. This aluminium foil bears on its side facing away from the supporting layer an aluminium oxide layer, which is thick by comparison with the thickness of the aluminium foil, on top of which there is a further layer of a light sensitive plastic.