G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 5/128 (2006.01) B44C 1/16 (2006.01) B44F 1/04 (2006.01) B44F 1/14 (2006.01)
Patent
CA 2206319
The present invention provides transparent decorative articles formed from a transparent substrate (8), glass microspheres (4), and a bonding layer (6), optional layers, and optional coatings, having an etched appearance or rainbow- like appearance depending on illumination conditions and viewing angle. Transfer graphics and transfer media are also provided. The ratio of the transparent microsphere refractive index to the transparent microsphere bonding layer refractive index is about 1.3:1 to about 1.7:1. From about 20 % to about 80 % of the average diameter of each microsphere is embedded in the bonding layer.
La présente invention concerne des articles décoratifs transparents réalisés à partir d'un substrat transparent (8), de microbilles de verre (4), ainsi que d'une couche de liaison (6), de couches et de revêtements éventuels. L'ensemble donne l'illusion d'une gravure ou d'un arc en ciel suivant les conditions d'éclairage et l'angle d'observation. L'invention concerne également des graphismes de transfert ainsi que des supports de transfert. Le rapport entre l'indice réfraction des microbilles transparentes et celui de la couche de liaison de ces dernières est d'environ 1,3:1 à environ 1,7:1. Environ 20 % à 80 % du diamètre moyen de chaque microbille est intégré dans la couche de liaison.
Burke Warren D.
Laperre James D.
Smart & Biggar
The Minnesota Mining & Manufacturing Company
LandOfFree
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