G - Physics – 02 – B
Patent
G - Physics
02
B
88/113.18, 154/7
G02B 5/124 (2006.01) B32B 7/02 (2006.01) B32B 27/00 (2006.01) B44F 1/02 (2006.01) C23C 14/14 (2006.01) G02B 5/136 (2006.01)
Patent
CA 1307150
ABSTRACT A retroreflective sheeting has microretroreflective formations on one surface which are partially metallized and partially exposed to the atmosphere about them. It is produced by forming a coating on microprism surface, and this coating includes a thin metallic deposit over substantially the entire surface and a second coating material over only a portion of the surface. The coated surface is then exposed to a solvent to remove the coating from its predominant area and leave the metal deposit on only a minor portion of the area. A backing sheet is then applied over the microprisms and bonded to the retroreflective sheeting so as to leave an air interface about the predominant area of the microprisms. As a result, some light rays are retroreflected by the metal deposit and some are retroreflected by the atmosphere interface. The sheeting exhibits daytime whiteness over the bulk of its surface area.
583920
Marks & Clerk
Reflexite Corporation
LandOfFree
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