Indian Central Jute Committee. Technological Research. Memoir No. 7. Measurement of Important Physical Characters of Jute Fibre Strands and Their Relation to Yarn Quality

In the present paper it is proposed to consider the measurment of these characters of the filaments of jute such as occur in a yarn and to indicate their possible relationship to the strength and the regularity of the yarn. [...] These were held separated with the fingers of one hand and a light pressure was applied with the thumb and the forefinger of the other hand along the length of the fragment beginning from the point nearest the fixed hand. [...] The irregularity which still persists in the yarn despite all attempts at neutralisation must be largely due to behaviour of the fibre while the drafting of the sliver or rove is in progress and this will be largely determined by (a) the frictional characters of the fibre strands and (b) structural peculiarities of the strands including length and the presence of branches. [...] The strength of a yarn as we find it is the result of the following separate effects : (i) The effect of the physical qualities of fineness and strength of the constituents. [...] Balls(1) working on cotton observed the final breaking load of the weakest link in the stretched yarn is detemined by the intrinsic strength of the hair." The intrinsic strength is defined as the ratio of the filament strength to the filament mass per unit length "( 16 ) The relation between Q and pim is shown in Fig 4. Ire this figure it is found that the points lie along the intrinsic stren