B - Operations – Transporting – 44 – F
Patent
B - Operations, Transporting
44
F
B44F 1/04 (2006.01) G09F 13/20 (2006.01)
Patent
CA 2629944
A fluorescent article includes an underlayer colored fluorescent film and an overlayer colored fluorescent film, which is provided over the underlayer colored fluorescent film. The underlayer colored fluorescent film includes a first fluorescent colorant in an underlayer polymer matrix. The overlayer colored fluorescent film includes a second fluorescent colorant in an overlayer polymer matrix. The second fluorescent colorant in the overlayer film at least partially blocks light in a first wavelength range while allowing transmission of an amount of light in a second wavelength range effective to make the first fluorescent colorant fluoresce.
La présente invention a trait à un article fluorescent comportant un film fluorescent coloré sous-jacent et un film fluorescent coloré sus-jacent, qui est disposé sur le film fluorescent coloré sous-jacent. Le film fluorescent coloré sous-jacent comporte un premier colorant fluorescent dans une matrice polymère sous-jacente. Le film fluorescent coloré sus-jacent comporte un deuxième colorant dans une matrice polymère sus-jacente. Le deuxième colorant dans le film sus-jacent bloque au moins partiellement la lumière dans une première plage de longueurs d'onde tout en permettant la transmission d'une quantité de lumière dans une deuxième plage de longueurs d'onde entraînant la fluorescence du premier colorant fluorescent.
Avery Dennison Corporation
Smart & Biggar
LandOfFree
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