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Providing luminescent decoration or safety markings for e.g. emergency exits, by embedding granules of passive luminescent material with optically active cover layer into matrix and then grinding
Providing luminescent decoration or safety markings for e.g. emergency exits, by embedding granules of passive luminescent material with optically active cover layer into matrix and then grinding
A passive luminescent granular material (1) provided with an opaque, optically active cover layer is embedded in a matrix which is made luminescent after grinding and optionally polishing. The decoration or markings are photoluminescent or phosphorescent.
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