Providing a New Method for Evaluating the Nip Stability in Intermingled Yarn
Publish place: Journal of Textiles and Polymers، Vol: 10، Issue: 1
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ITAST-10-1_002
تاریخ نمایه سازی: 14 بهمن 1402
Abstract:
The aim of this study is to provide a method toevaluate the intermingled nip stability. For this purpose,polypropylene (fully drawn yarn) FDY with three types ofintermingling Heberlein jet inserts (P۴۱۲, P۲۱۲, and S۱۶) andthree air pressure values of ۲, ۳, and ۴ bar was subjected tothe texturing process. In measuring the nip stability in theprevious methods, i.e. using the nip number, it was observedthat in some long nips with special structures, a nip withcertain length under the stretching process may becomeseveral nips with a less total entanglement length. This cancause an error in evaluating the nip stability. Therefore, inorder to evaluate the nip stability, it is suggested to use the niplength in the ۳۶۰° study around the yarn axis to evaluate theeffect of the change in the length of the intermingled areas dueto stretching. Using the method presented in this research andafter performing experiments, the maximum and minimumnip stability with considering the nip length were ۹۷.۳% (forP۴۱۲ jet insert and ۴ bar air pressure) and ۴۸.۵۵% (for S۱۶ jetinsert and ۲ bar air pressure), respectively. However, the nipstability in the same test conditions based on nip density was۷۴.۴۷ and ۵۲.۹۴%, respectively.
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Authors
Siamak Shirzadeh Ajirloo
Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Saeed Shaikhzadeh Najar
Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.
Mehdi Varsei
Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Abosaeed Rashidi
Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
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