Three component yarn

Table 8.4 Physical properties of three component yarns... 

Mohamed M.H., Rochow T.G. and Heeralal R. (1974), Some structural and physical properties of yarn made on the integrated composite spinning system. Part II Three-component yarn. Textile Research Journal, 44,206-213. 

In the case of a three component yam there were also some problems associated with the appearance and staple fiber cover of the final yarn and these were improved by the use of an additional vortex at the exit of the... 

Table 8.5 Tensile properties of three component ICS yarn...

In a follow-up paper (Mohamed et al, 1974), the properties of three component ICS yarns were studied. It was claimed that with suitable choice of raw material many different properties could be achieved, and Table 8.4 shows typical examples of yams. Analysis of cross-sections of the various yarns indicated that the cross-sectional shape was very much dependent on the shape of the core yam. Thus, while a filament yam (sample 1 in Table 8.4) yielded a round cross-section, the use of flbrillated tape (sample 4) produced a flattened shape. It was also found that for some yarns there was significant migration of the staple into the polymer (and associated movement of polymer to the surface of the yarn). Yam sample 1 was evaluated for tensile properties and then re-evaluated after the chemical removal of the staple fibers and the polymer. Table 8.5 shows that, while the strength of the yam was higher when the staple fibers were present, the tenacity was lower than the filaments. Additionally, the presence of polymer and staple reduces the elongation of the yarn. 

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