False twisting has been used to reduce yarn twists while keeping yarn tenacity, which is vital to improve fabric softness. In this paper, a false twisting device was integrated into a siro spinning system to develop a novel yarn structure with enhanced softness, in which the fibers were uniformly arranged. Siro false twist spun yarn was compared with a conventional siro spun yarn with the same count and twist in terms of yarn diameter, tenacity, hairiness, evenness, and packing density. The cross-sectional packing density of the yarns was analyzed based on micro X-ray computed tomography. The results showed that the siro false twist spun yarn has advantages in hairiness and evenness. The siro false twist spun yarn has an increased diameter by 10.4–19.0% and a more uniform cross-sectional packing density than the siro spun yarn. The two yarns were knitted into fabrics, and test results showed that the fabric produced with the siro false twist spun yarns had better compressibility, air permeability and light transmission. The findings from this study demonstrated that the siro false twist spun yarn improved fullness and its fabric has superior softness.
HuaTTaoXMChengKPS.Comparative study on appearance and performance of garments made from low-torque ring, conventional ring and open-end spun yarn fabrics using subjective and objective evaluation methods. Text Res J2014;
84: 1345–1360.
2.
HuaTTaoXMChengKPS, et al.
An experimental study of improving fabric appearance of denim by using low torque singles ring spun yarns. Text Res J2013;
83: 1371–1385.
3.
YangKTaoXMXuBG, et al.
Structure and properties of low twist short-staple singles ring spun yarns. Text Res J2007;
77: 675–685.
4.
SoltaniPJohariMS.Effect of strand spacing and twist multiplier on structural and mechanical properties of Siro-spun yarns. Fiber Polym2012;
13: 110–117.
5.
LiuSQDaiJMJiaHS, et al.
Effect of siro-spun processing parameters on properties of 55/45 flax/cotton blended yarn. Adv Mat Res2011;
331: 502–511.
6.
GokarneshanNAnbumaniNSubramaniamV.Influence of strand spacing on the interfibre cohesion in siro yarns. J Text Inst2007;
98: 289–292.
7.
KunYXiao MingTBin GangX, et al.
Structure and properties of low twist short-staple singles ring spun yarns. Text Res J2007;
77: 675–685.
8.
HuangXXuBTaoX.Wrapper fibers on low-twist worsted yarns. Key Eng Mater2015;
671: 497–502.
9.
HoffmanRM.A generalized concept of resilience. Text Res J1948;
18: 141–148.
10.
HonoldEGrantJN.Softness of cotton yarns as affected by fiber and yarn properties. Text Res J1961;
31: 643–650.
11.
YinRTaoXJasperW.A theoretical model to investigate the performance of cellulose yarns constrained to lie on a moving solid cylinder. Cellulose2020;
27: 9683–9698.
12.
RehmanAJabbarMUmairM, et al.
A study on the interdependence of fabric pore size and its mechanical and comfort properties. J Nat Fibers2018;
16: 795–805.
13.
BackerS.The relationship between the structural geometry of a textile fabric and its physical properties. Part IV: Interstice geometry and air permeability. Text Res J1951;
21: 703–714.
14.
HearleJWSGuptaBSMerchantVB.Migration of fibers in yarns. Part I: Characterization and idealization of migration behavior. Text Res J1965;
35: 329–334.
15.
RegarMLSinhaSChattopadhyayR, et al.
Migration characteristics of Eli-Twist yarn and its comparison with Siro yarn. Indian J Fibre Text Res2021;
45: 444–449.
16.
YangJXuBJXiCP, et al.
Comparison of fiber migration in different yarn bodies. Indian J Fibre Text2018;
43: 410–414.
17.
HickieTSChaikinM.Some aspects of worsted-yarn structure. Part III: The fiber-packing density in the cross-section of some worsted yarns. J Text Inst1974;
65: 433–437.
18.
NeckářBIshtiaqueSMŠvehlováL.Rotor yarn structure by cross-sectional microtomy. Text Res J1988;
58: 625–632.
19.
DasA.Technical Textile Yarns. In: AlagirusamyRDasA (eds) 3 – Modification of textile yarn structures for functional applications.
Cambridge:
Woodhead, 2010, pp. 91–111.
20.
IshtiaqueSMSharmaI CSharmaS.Structual mechanics of siro yarn as analyzed by microtomy. Indian J Fibre Text1993;
18: 116.
21.
SoltaniPJohariMS.A study on siro-, solo-, compact-, and conventional ring-spun yarns. Part I: Structural and migratory properties of the yarns. J Text Inst2012;
103: 622–628.
KrucińnskaI.Fiber blending irregularities in cross sections and on yarn surfaces in relation to yarn properties. Text Res J1988;
58: 291–298.
24.
LongRLDelhomCDBangeM.Effects of cotton genotype, defoliation timing and season on fiber cross-sectional properties and yarn performance. Text Res J2021;
91: 1943–1956.
25.
QiuHIemotoYTanoueS.Effects of cross-sectional shape of yarn duct of interlacer on the properties of interlaced yarn. J Text Eng2007;
53: 1–8.
26.
LiuYHuH.Finite element analysis of compression behaviour of 3D spacer fabric structure. Int J Mech Sci2015;
94–95: 244–259.
27.
YuXWWangHWangZW.Analysis of yarn fiber volume fraction in textile composites using scanning electron microscopy and X-ray micro-computed tomography. Reinf Plast Compos2018;
38: 199–210.
28.
Yoiti Ito ParadaMMatthias SchlepützCMichel RossiR, et al.
Two-stage wicking of yarns at the fiber scale investigated by synchrotron X-ray phase-contrast fast tomography. Text Res J2019;
89: 4967–4979.
29.
HaleemNLiuXHurrenC, et al.
Investigating the cotton ring spun yarn structure using micro computerized tomography and digital image processing techniques. Text Res J2018;
89: 3007–3023.
30.
TodaMGrabowskaKECiesielska-WrobelIL.Micro-CT supporting structural analysis and modelling of ropes made of natural fibers. Text Res J2015;
86: 1280–1293.
31.
YingGJieFRongY, et al.
Investigation and evaluation on fine upland cotton blend yarns made by the modified ring spinning system. Text Res J2015;
85: 1355–1366.
32.
LiuXSuXSongJ.Research on yarn qualities modified by mechanical false-twisting device. J Text Inst2020;
111: 529–539.
