Retroreflective sheeting

Details Retroreflective sheeting Retroreflective sheeting

1985-03-04

1987-06-09

Lilling, Herbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524379, 524386, 524391, 524413, 524501, 524504, 524507, 524523, 523172, C08K 320, C08K 310, C08K 507, C08K 505

Patent

active

046720898

ABSTRACT:
A retroreflective relatively flexible laminate sheet construction has a thermoplastic web with a smooth light-receiving first side and a second side coextensive with said first side. A retroreflective pattern is formed on the second side. A slurry of granular material is deposited on the second side to cover selected portions of the formed pattern with remaining portions of the formed pattern devoid of the granular material, and said slurry is dried or cured to produce a well-defined pattern. A layer of backcoating material is deposited on the second side to overlay the granular material, the backcoating material contacting the thermoplastic web where no granular material has been deposited, thereby encapsulating the granular material between the second side and the backcoating layer. An added, outer layer provides additional weather protection for the thermoplastic web. Methods are detailed to manufacture the laminate, and compositions of backcoating mixtures also are disclosed.

REFERENCES:
patent: 3891591 (1975-06-01), Chang et al.
patent: 4444937 (1984-04-01), Badertscher
Polyvinyl Chemical Inc., "DP-101", Sep. 1983, Wilmington, Mass., 01887.
Rhoplex AC-829, "Rohm & Haas", Aug. 1985, Niles, Illinois, 60648.

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