High-brightness pavement marking sheet material
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United States of America Patent
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-
Jun 14, 1988
Grant Date -
N/A
app pub date -
Oct 11, 1985
filing date -
Oct 22, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a high-brightness pavement marking sheet material, a continuous pattern of a multiplicity of protuberances and depressions is formed on the surface of a base sheet made of rubber, synthetic resin or the like and that glass microspheres are embedded in these protuberances and depressions in such a manner that a depth of embedding of these glass microspheres in the base sheet from the surface is randomly different one from another and a majority of the glass microspheres in these protuberances and depressions are partially exposed from the surface of the base sheet. An excellent initial brightness is obtained and brightness at a high level is continuously maintained despite wear of the base sheet.
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