Influence of Selected Process Variables on Worsted Compact Yarn Properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F16%3A00003612" target="_blank" >RIV/46747885:24410/16:00003612 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Selected Process Variables on Worsted Compact Yarn Properties

Popis výsledku v původním jazyce

In the work the influence of small change of draft and negative air pressure in condensation zone of drafting unit of compact spinning machine on selected worsted yarn properties is studied. Yarns (80% WO, 20% PA) were produced on a compact spinning machine equipped with the compression zone type Suessen EliTe from three rovings of various fineness using two levels of air negative pressure. Main draft ratio on the compact spinning machine was changed to the yarn of the same count be produced. To eliminate influence of roving irregularity on final yarn mass irregularity, machineirregularity was calculated and evaluated. Results confirmed that higher negative air pressure positively influences all observed properties of tested yarn (mass irregularity, number of faults, yarn hairiness, tenacity and breaking elongation) whereas increasing draft ratio up 20 % has statistically significant effect on thin places, number of neps as well as on yarn mass irregularity, but in this case from the point of practice, the difference is insignificant. On the other hand, draft has positive effect on yarn breaking elongation and, in much lesser extent on yarn tenacity. According to results, the level ofnegative air pressure is more significant factor which affects yarn property compared to observed range of draft ratio.

Název v anglickém jazyce

Influence of Selected Process Variables on Worsted Compact Yarn Properties

Popis výsledku anglicky

In the work the influence of small change of draft and negative air pressure in condensation zone of drafting unit of compact spinning machine on selected worsted yarn properties is studied. Yarns (80% WO, 20% PA) were produced on a compact spinning machine equipped with the compression zone type Suessen EliTe from three rovings of various fineness using two levels of air negative pressure. Main draft ratio on the compact spinning machine was changed to the yarn of the same count be produced. To eliminate influence of roving irregularity on final yarn mass irregularity, machineirregularity was calculated and evaluated. Results confirmed that higher negative air pressure positively influences all observed properties of tested yarn (mass irregularity, number of faults, yarn hairiness, tenacity and breaking elongation) whereas increasing draft ratio up 20 % has statistically significant effect on thin places, number of neps as well as on yarn mass irregularity, but in this case from the point of practice, the difference is insignificant. On the other hand, draft has positive effect on yarn breaking elongation and, in much lesser extent on yarn tenacity. According to results, the level ofnegative air pressure is more significant factor which affects yarn property compared to observed range of draft ratio.

Druh

D - Stať ve sborníku

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

21st International Conference STRUTEX Structure and Structural Mechanics of Textiles Conference Book

ISBN

978-80-7494-269-3

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

145-152

Název nakladatele

Technical University of Liberec

Místo vydání

Liberec

Místo konání akce

Liberec

Datum konání akce

1. 1. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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