Measurement of Twisting Moment of Ply Yarn and the Effect of Yarn Tension on Twisting Moment.

概要

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The twisting moment is an important factor as a criterion of the twist liveliness of ply yarn . A very simple method is developed for the measurement of twisting moment . The yarn to be tested is hanged at one extremity ; the other carrying a weight is free to rotate . The time required to rotate the weight by one turn will measure the twisting moment of the yarn .<BR>At the measurement of the twisting moment of a yarn by the method descrbed above, the weight, in other words, the tension of the yarn causes a twisting moment which is added to the twisting moment of the yarn itself. Therefore, this effect of the tension should be eliminated. It is possible, if the twisting moment measured with two ends of the yarn held altogether is subtracted by the moment of single end of the yarn with the same weight. The difference between the two will give the twisting moment of the yarn itself.
社団法人日本繊維機械学会の論文