| 摘要 |
An ultraviolet reactive coating system for surfaces (18) of a body (14) includes a plurality of layers (20, 22, 24 and 26) in which an ultraviolet reactive fluorescent whitener is blended with at least one of the inner layers (20-24) and in which an outer layer (26) is impervious to ultraviolet light. In use, the outer layer is exposed to ultraviolet light and then coatings (12) and (16) are inspected for identifiable, visible, fluorescing light from the inner layer, such being indicative of faults in the coverage of the inner layer by the outer layer.
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