Wearing coating for delivery rollers of a drawing roller frame
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United States of America Patent
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Jan 24, 2012
Grant Date -
Jun 11, 2009
app pub date -
Jan 24, 2007
filing date -
Mar 8, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
The coating of the pressure roller (3) of a drawing roller frame for spinning frames comprises an outer layer and an inner layer fixed to the core of the pressure roller. The outer layer is thinner and harder than the inner layer and is embodied as an endless belt (1) which loosely surrounds the inner layer such that the belt can be displaced in relation to the inner layer. In order to improve the running of the belt, the belt is guided over a deflector rail (2), the cross-sectional area (u) of the rail being wider than the average staple length of the fibre material (F) drawn on the drawing roller frame. Furthermore, the belt is designed in such a way that it comprises a double thread interlining, one thread interlining being wound counter to the second thread interlining such that the threads of one thread interlining cross the threads of the second thread interlining.
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