Belt having a multilayer impregnated textile overlay
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United States of America Patent
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May 9, 2017
Grant Date -
Dec 25, 2014
app pub date -
Dec 17, 2012
filing date -
Dec 20, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A power transmission belt having a base made of polyurethane and a textile overlay includes a first coating of a first thermoplastic material on the surface of the textile overlay. The first coating forms an impregnation, which has a melting temperature from 80° C. to approximately 145° C., penetrates at least partially into the textile. A second thermoplastic material on the first coating has a higher melting point. The first and second coatings can be applied successively to the textile overlay before casting of the polyurethane or can be overlaid as individual films or as a multi-layer film, and they may be applied to the textile overlay by heat and pressure. The coating acts to reduce abrasion and prevents the through passage of the belt polyurethane.
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