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- Title
Skewness and Spirality of Knitted Structures.
- Authors
Pavko-Čuden, Alenka
- Abstract
Weft knitted structures are affected by various forms of dimensional distortion. Inclination and distortion of loops within knitted structures are commonly known as skewness and spirality, respectfuly. Causes of skewness and spirality have been thoroughly investigated, analyzed and classified. They can basically be divided into two groups: material causes and process causes. One of the material causes is yarn related and is caused by residual torque in the yarn shown by its twist-liveliness. One of the more important process causes is machine related and is connected to knitting with multiple feeders on the circular knitting machine. Skewness and spirality have been subjects of research for almost a century. Models have been developed for understanding and predicting the loop distortion phenomena. Procedures for reduction or even elimination of the skewness/spirality have continuously been developed and improved. Some of them include changes in raw material, the others in mechanical processes and/or equipment while the other again concentrate on after-treatments. Many standards and other testing methods for measuring the skewness and spirality have been used in research and industrial practice. The uses of many terms describing this phenomenon have shown the continuous importance of the skewness/spirality problem on the one hand and the inconsistency of the terminology on the other.
- Subjects
TEXTILE machinery; MACHINE knitting; KNITTING machines; YARN mills; WOOL textiles
- Publication
Tekstilec, 2015, Vol 58, Issue 2, p108
- ISSN
0351-3386
- Publication type
Article
- DOI
10.14502/Tekstilec2015.58.108-120