A combined process for double-twisting and heat-treating textile grade polyester yarn
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The use of a technological scheme which combines the processes of twisting and yarn heat-treatment makes it possible to intensify the process of textile grade polyester yarn manufacture as a result of shortening the series of textile-technology steps.
The scheme permits one not only to set the twist well, but also to regulate the basic physicomechanical properties of the yarns over a wide range.
By using the proposed technological scheme, depending on the assigned degree of deformation, one can obtained twisted yarns with a shrinkage of 1–2% at an initial elastic modulus up to 20 MPa.
KeywordsPolymer Shrinkage Elastic Modulus Technological Scheme Physicomechanical Property
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