Yarn measurements are expressed as yarn number, count, or size, and describe the relationship of length and weight (or approximate diameter).
Core-yarn and textured yarn tension measurements have been made using a Rothschild INTEG series 82 tension head.
The linear mass density of the yarn used in these measurements amounts to 3270 dtex, which is also a measure for the yarn's cross section.1 The experimental data for the thermal conductivity was fitted to a function of the form λZ="(1010±30)·T1010±3003pWmmdtex-1010±30
b 3 spectra were recorded per measurement for "1" yarns and averaged for each yarn, c averaged raw NIR spectra for 5 yarns, d 5 adjacent yarns in "2" were unravelled and cut to approximately 0.5 mm, with 3 FTIR spectra recorded for each piece from one yarn and averaged, e averaged raw FTIR spectra of 5 yarns from area "2" adjacent to "1".
Tests were conducted on coupons moulded to different volume fractions and data compared to previous measurements of local yarn angle.
This system is not convenient for measurement of staple yarns because their greater weight would require the use of very large numbers.
Use this measurement to determine the yarn length.
The tex system, originally devised in 1873, is a universal method developed for the measurement of staple fibre yarns and is also applicable to the measurement of filament yarns.
The accuracy of the technique was determined quantitatively by comparing measured values of yarn thickness, width and spacing between the yarns from X-ray micro CT images with measurements obtained from optical micrographs of the same textile.
The paddle used to measure torsional rotation was located at near yarn center and the cantilever supporting the top end of the muscle enabled measurement of tensile actuation.
Simulations on two types of yarns, made from different raw materials and based on distinct processing approaches, predict yarn strength values that compare favorably with experimental measurements.
