G - Physics – 02 – B
Patent
G - Physics
02
B
18/107, 88/113
G02B 5/08 (2006.01) G02B 5/128 (2006.01)
Patent
CA 1236720
HIGH-ANGULARITY RETROREFLECTIVE SHEETING AND METHOD FOR MANUFACTURE Abstract A new embedded-lens retroreflective sheeting which exhibits superior properties, including superior angularity, and which is made by a new method of manufacture involving lamination techniques. Microspheres are embedded into a first polymeric layer to less than one-half the average diameter of the microspheres, and a pre-formed spacing film is laminated to the microsphere covered surface of the first layer so as to obtain conformation of the spacing film in a substantially constant thickness over a useful portion of the back surface of the microspheres.
449404
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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