Top roller cot grinding The diameter of top roller rubber cot reduced after each grinding cycle was by 0 3mm The semiautomatic grinding machine was used for grinding the cots As a result the following diameter variations were obtained 32 0mm 31 7mm 31
stages by a grinding machine After reducing the cots diameter the cotton and cotton polyester yarns were spun in two different ways namely i the pressure of the front top rollers was fixed and no adjustment was made on the ring pendulum arms and ii after
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