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Textile Research Journal
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Properties of Wool/PET Composite Yarns

Xiongying Wu

China Textile University, Shanghai, 200051, People's Republic of China

Fumei Wang

China Textile University, Shanghai, 200051, People's Republic of China

Shanyuan Wang

China Textile University, Shanghai, 200051, People's Republic of China

This paper reports an investigation of the differences in structures and mechanical properties of two kinds of composite yarns and of conventional two-ply staple yarns. The cross section of one composite yarns (Sirofil) shows a circular shape, which is similar to the structure of single spun yarns and to the helical geometry line of two-ply yarns. The other composite yarn structure (twisted ring spun singles yarns with filaments) is similar to that of two-ply yams. The tensile properties of composite yarns mainly depend on the tensile properties of the filaments, and their tenacity is higher than that of two-ply wool/PET staple fiber yams. The bending rigidity of these two kinds of composite yams is lower than that of two-ply staple fiber yams. Wool/PET composite yarns show higher residual torque than conventional two-ply staple yarns, and the reason is their structure and lower torque-relaxation.

Textile Research Journal, Vol. 73, No. 4, 305-309 (2003)
DOI: 10.1177/004051750307300405
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