ENAMELLED SUBSTRATE FORMING A PROJECTION SCREEN, AND PRODUCTION THEREOF

The invention relates to an enamelled substrate for an (overhead) projection screen (and the production thereof), comprising a first glass sheet (1) including a diffusion layer (2), made from enamel, comprising a vitreous material having a thickness E1 of at least 5 μm and at most 20 μm, said vitreo...

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Hauptverfasser:	CHUDA, Katarzyna, BARLET, Marina, RUFINO, Benoit, CRAVERO, Louis
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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creator	CHUDA, Katarzyna BARLET, Marina RUFINO, Benoit CRAVERO, Louis
description	The invention relates to an enamelled substrate for an (overhead) projection screen (and the production thereof), comprising a first glass sheet (1) including a diffusion layer (2), made from enamel, comprising a vitreous material having a thickness E1 of at least 5 μm and at most 20 μm, said vitreous material comprising zinc and/or bismuth borosilicate. The matrix is porous and said diffusion elements have gas or vacuum pores (3) of characteristic size, in particular a diameter of at least 0.2 μm. The assembly comprising the first glass sheet and the diffusion layer has a light transmittance of at least 75%, a haze of at most 30% and at least 1%, and a gain of at least 0.4.
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subjects	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
title	ENAMELLED SUBSTRATE FORMING A PROJECTION SCREEN, AND PRODUCTION THEREOF
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