Method of making retroreflective laminate

Details Method of making retroreflective laminate Method of making retroreflective laminate

1979-01-12

1980-10-07

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156276, 156324, B32B 3108, G02B 5128

Patent

active

042266580

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. The laminate being completed with the spacer layer bonded to a bead embedded binder layer. A reflective mirror-like thin metal coating is provided on the outer surface thereof. The improvement resides in using a supported spacer layer so that no stretching of the spacer layer occurs during lamination, thus resulting in lessening of visual defects such as wrinkles and the like and crossbanding in the reflectant characteristics. The process further eliminates the use of a seal coat as well as combining bead coating and lamination into one step rather than two as in the prior art.

REFERENCES:
patent: 3172942 (1965-03-01), Berg
patent: 3936567 (1976-02-01), Vesely
patent: 4023889 (1977-05-01), Eagon et al.

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