Characterization of the Twist Distribution Function and Twist Unevenness of Self-twist Yarns
Journal Title: Fibres and Textiles in Eastern Europe - Year 2016, Vol 24, Issue 1
Abstract
In in-phase self-twist yarn there exists an obviously weak twist area between the twisted and no twisted zones. Therefore, during the self-twist spinning process, different distances from the two strands to the convergence point is adopted to produce a certain phase difference to improve the yarn strength. There are two methods used for calculating the twist distribution function of self-twist yarn: 1. using the difference in distance c, and 2. using the twist distribution function of strands A and B, respectively. Then the average twist over a half cycle length is calculated by the twist distribution functions from the two methods mentioned above. Comparing the calculation value from the two methods with actual test twists for the half cycle length, the result shows that the calculation value from method 2 is closer to the values measured, namely the twist distribution function derived from that of strands A and B, respectively. The twist unevenness of self-twist yarn is calculated by the twist distribution function from method 2. The twist unevenness of yarn 1 is the highest. That of yarns 2 and 3 decreases in turn. From the test data of 49×2 tex and 113×2 tex selftwist yarns, in-phase self-twist yarn 1, with maximum twist unevenness, has the minimum tenacity and maximum unevenness of tenacity, and in the same way phased self-twist yarn 3, with the minimum twist unevenness, has the maximum tenacity and minimum unevenness of tenacity.
Authors and Affiliations
Hong Cui , Chunxia Wang , Libin Lv
Keywords
Related Articles
- EP ID EP163970
- DOI 10.5604/12303666.1172085
- Views 85
- Downloads 0
Usage of Customer Profitability Management Tools on the Textile Market of Bosnia and Herzegovina
The modern market puts new demands on companies in terms of customer segmentation and relations with them. Companies facing the pressure of globalisation must adopt new views in the domain of adaptation of all functions...
Development of an Electrospun Nanofibrous Web with Hyaluronic Acid
Textile materials with an electrospun nanofibrous web can be used fo ar wide range of applications, including medicine and health care. In this research, polyamide-6 and hyaluronic acid were used for the development of a...
Study on the Effects of Perfume on the Mechanical and Colour Properties of Silk Fabrics
Perfumes are generally used to enhance the attitude of the person. Deodorants and perfumes are designed to be applied directly to the skin. Some people with sensitive skin may find that their skin does get irritated if t...
Effect of Accelerated Ageing on Ballistic Textiles Modified By Plasma-Assisted Chemical Vapour Deposition (PACVD)
The functionalisation of textile products and materials using the low temperature plasma technique is increasingly used in industrial practice, mainly because of the many benefits, often unattainable with the use of othe...
Teoretyczne rozważania efektów podziału trójkąta przędzenia w przędzeniu obrączkowym
Geometria trójkąta skrętu ma wpływ na rozkład naprężeń włókien w trójkącie przędzenia i wpływa również na właściwości przędzy. Przędzalniczy podział trójkąta przędzenia jest jednym z bardziej skutecznych sposobów zmniejs...