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Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures

The dynamic regulation of fiber stress distribution in the yarn-forming triangle area is critical for controlling variable composite yarn structures, including siro and sirofil composite yarns. In this study, comparison analyses of the variable geometric structure and stress distribution during the...

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Autores principales: Peng, Zhiyong, Li, Wei, Chen, Ze, Wang, Pinxun, Su, Ziyi, Sun, Yue, Liu, Keshuai, Xu, Duo, Xu, Weilin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10346159/
https://www.ncbi.nlm.nih.gov/pubmed/37447619
http://dx.doi.org/10.3390/polym15132974
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author Peng, Zhiyong
Li, Wei
Chen, Ze
Wang, Pinxun
Su, Ziyi
Sun, Yue
Liu, Keshuai
Xu, Duo
Xu, Weilin
author_facet Peng, Zhiyong
Li, Wei
Chen, Ze
Wang, Pinxun
Su, Ziyi
Sun, Yue
Liu, Keshuai
Xu, Duo
Xu, Weilin
author_sort Peng, Zhiyong
collection PubMed
description The dynamic regulation of fiber stress distribution in the yarn-forming triangle area is critical for controlling variable composite yarn structures, including siro and sirofil composite yarns. In this study, comparison analyses of the variable geometric structure and stress distribution during the yarn-forming process, which involves step rolls with asymmetrical fiber control, have been carried out using ring-spinning technology. The geometric analyses show that partly staple fibers are continuously controlled while other fibers intermittently lack stress restraint, resulting in cyclically changed helical angles and wrapping density in the yarn-forming triangle area. The yarn structure model displayed that periodically distributed staple fibers occur in siro composite yarn, while sirofil composite yarn shows gradual periodic changes with uniform thickness variations, caused by cyclical changes in the stress distribution between filaments, and the strand altered the yarn-forming zone shapes from symmetrical to offset. Then, a systematic comparison of variable composite yarns with different frequencies (high, medium and low frequency) revealed that low-frequency step roll with wider grooves resulted in an intermittent output of staple fibers with less stress restraint, resulting in more pronounced structural variation in the siro and sirofil composite yarns with a slight yarn quality deterioration.
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spelling pubmed-103461592023-07-15 Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures Peng, Zhiyong Li, Wei Chen, Ze Wang, Pinxun Su, Ziyi Sun, Yue Liu, Keshuai Xu, Duo Xu, Weilin Polymers (Basel) Article The dynamic regulation of fiber stress distribution in the yarn-forming triangle area is critical for controlling variable composite yarn structures, including siro and sirofil composite yarns. In this study, comparison analyses of the variable geometric structure and stress distribution during the yarn-forming process, which involves step rolls with asymmetrical fiber control, have been carried out using ring-spinning technology. The geometric analyses show that partly staple fibers are continuously controlled while other fibers intermittently lack stress restraint, resulting in cyclically changed helical angles and wrapping density in the yarn-forming triangle area. The yarn structure model displayed that periodically distributed staple fibers occur in siro composite yarn, while sirofil composite yarn shows gradual periodic changes with uniform thickness variations, caused by cyclical changes in the stress distribution between filaments, and the strand altered the yarn-forming zone shapes from symmetrical to offset. Then, a systematic comparison of variable composite yarns with different frequencies (high, medium and low frequency) revealed that low-frequency step roll with wider grooves resulted in an intermittent output of staple fibers with less stress restraint, resulting in more pronounced structural variation in the siro and sirofil composite yarns with a slight yarn quality deterioration. MDPI 2023-07-07 /pmc/articles/PMC10346159/ /pubmed/37447619 http://dx.doi.org/10.3390/polym15132974 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Peng, Zhiyong
Li, Wei
Chen, Ze
Wang, Pinxun
Su, Ziyi
Sun, Yue
Liu, Keshuai
Xu, Duo
Xu, Weilin
Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures
title Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures
title_full Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures
title_fullStr Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures
title_full_unstemmed Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures
title_short Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures
title_sort controlling the fiber stress distribution with variable-frequency step roll for tunable spun yarn structures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10346159/
https://www.ncbi.nlm.nih.gov/pubmed/37447619
http://dx.doi.org/10.3390/polym15132974
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