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Content archived on 2024-04-30

Directed high rate evaporation of metallic and transparent materials onto polymer films

Objective



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.

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CRS - Cooperative research contracts

Coordinator

Gesellschaft für Wolfram Industrie mbH
EU contribution
No data
Address
34,Permanederstraße
83278 Traunstein
Germany

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Total cost

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Participants (9)

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