Rubber product with wear indicating layers
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United States of America Patent
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May 4, 2021
Grant Date -
N/A
app pub date -
Aug 2, 2018
filing date -
Aug 2, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A polymeric product with at least one surface subject to wear or abrasion, at least a portion of which product includes microcapsules of an indicator substance which is released to indicate a state of wear has been reached. The microencapsulated indicator substance may be a fragrance or a colorant. The indicating portion or zone may be a layer or a thin sheet of microcapsules in rubber or in the polymeric material making up the body of the product. There may be more than one indicating layer or zone in the product. The various zones may contain different fragrances or colorants, which may provide progressive indication of the state of wear.
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