Directed High Rate Evaporation of Metallic and Transparent Materials onto Polymer Films Directed Evaporation Main target is to develop a new, relatively simple evaporation technology for vacuum coating, based on specifically shaped radiation - heated porous sources with high directional characteristics, . compatible with various vacuum coating technologies, having significantly longer lifetimes than present boat evaporators, retrofittable into available equipment, for operation of present metallization coating processes at Iower cost and . for specific new processes without the high investment required e.g. for electron - gun evaporation sources, thus helping SME's to operate their existing equipment in a competitive way and to enter into new product fields. This technique is to be developed for 3 different kinds of evaporation coating materials: * Meltable, low boiling point metals, (such as Al, Cu) * Subliming metals (such as Cr) * Dielectrics, mainly oxides. The main future application field for this technology and coating materials will be roll-to-roll large area vacuum coating of films, especially for: * Packaqing films with evaporated barrier layers (metallic or transparent) * Decorative films * Films for technical applications, e.g. capacitor films, or films for safety applications. In this technical area, the following innovations are to be expected: * A better usage of evaporation material, less stray deposition residues, reduced cleaning effort and higher equipment up-time, as main effect. * Evaporation of other metals than Aluminum, e.g. Chromium, without the need for additional equipment for electron beam evaporation or flash evaporation. * Direct evaporation of dielectrics from inexpensive oxide mixtures, e.g. for transparent barrier layers for packaging films. * Position-independent evaporation sources for perpendicular to nearly horizontal directions, allowing for arranqements of several subsequent evaporation sources in substrate transport direction.
Funding SchemeCRS - Cooperative research contracts
15062 Bosco Marengo
NR17 2QZ Attleborough