Retroreflective laminate

Details Retroreflective laminate Retroreflective laminate

1975-02-24

1977-05-17

Corbin, John K.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156322, 427163, G02B 5128

Patent

active

040238890

ABSTRACT:
The laminate includes a partially cured, flexible acrylic face sheet having a primer layer on one surface thereof bonded to a binder layer having a layer of reflective glass beads embedded therein and protruding therefrom and a sealer layer on the exposed surfaces of the glass beads, the laminate being completed with a spacer layer bonded to the sealer layer and having a reflective mirror-like thin metal coating on the outer surface thereof. The binder layer, sealer layer and spacer layer, or films are all made from basically the same uncured polyvinyl butyral material. The method of forming the acrylic face layer, the use of soft rubber pressure rolls in bonding a glass bead carrying partial laminate to a preformed spacer film, and the method of making the laminate of the invention and the compositions used therein.

REFERENCES:
patent: 2646364 (1953-07-01), Porth
patent: 3355311 (1967-11-01), Gosselink
patent: 3535019 (1970-10-01), Longlet
patent: 3567307 (1971-03-01), Rideout et al.
patent: 3702213 (1972-11-01), Schwab
patent: 3833289 (1974-09-01), Schuler
patent: 3877786 (1975-04-01), Booras et al.
patent: 3877787 (1975-04-01), Buzbee et al.
patent: 3934065 (1976-01-01), Tung

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