Effect of opening roller speed, drums speed difference and suction air pressure on properties of open-end friction spun polyester and acrylic yarns

Vishnoi, Prashant; Ishtiaque, S. M.; Das, Arpita

doi:10.1007/bf02875650

Cited by 4 publications

(6 citation statements)

References 4 publications

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“…It was observed from Table 5 that fibres from 5th feeding position have higher twist than fibres from 1st feeding position due to reason discussed by Ishtiaque et al (2005). The results also show that the yarn made from the modified duct have slightly higher twist because of the improved air flow.…”

Section: Structure and Properties Of Core-sheath Friction Spun Yarnsmentioning

confidence: 78%

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Influence of modified transport duct profile on air flow, yarn structure and properties: Part II

Ishtiaque¹,

Das²,

Vishnoi³

et al. 2006

Journal of the Textile Institute

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The present work is concerned with the modification of transport duct in DREF-III machine. This article deals with the design of the duct and its influence on air flow inside the duct and on yarn properties. By modifying the design of the transport duct, air flow inside the duct as well as arrangement of fibres in the yarn and yarn properties can be improved. The transport duct having curved profile of 15-mm length (modified duct) leads to improved yarn structure and properties for open-end and core-sheath friction yarns. However, this improvement is more significant for open-end friction spun yarns. In core-sheath friction spun yarns, the improvement in yarn tenacity is more for 50:50 core-sheath ratio and also for the higher linear density.

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Section: Structure and Properties Of Core-sheath Friction Spun Yarnsmentioning

confidence: 78%

“…Influence of modified transport duct profile on air flow, yarn structure and properties feeding position (Ishtiaque et al, 2005). It is observed that the yarn from the modified duct has slightly higher twist for 1st and 5th sliver feeding positions.…”

Section: Structure and Properties Of Open-end Friction Spun Yarnsmentioning

confidence: 92%

Influence of modified transport duct profile on air flow, yarn structure and properties: Part II

Ishtiaque¹,

Das²,

Vishnoi³

et al. 2006

Journal of the Textile Institute

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“…In other studies [3][4][5], the best spinning spacing was suggested to be 9 mm, while Mukhopadhyay et al [6] recommended 10 mm or 12 mm. These differences were mainly because of the difference of spinning materials and different corresponding operating systems [7][8][9][10].…”

Section: Chinamentioning

confidence: 99%

Effect of Strand-spacing Between Roving and Filament on Sirofil Yarn Properties

Liu

et al. 2007

Textile Research Journal

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The parameters such as the angle in “V” area in Sirofil spinning system, the tension and torque of the filament and roving with different feeding spacing are theoretically discussed. The optimal strand-spacing of different spinning materials is, thus, recommended. The configuration, strength and elongation, hairiness and evenness of the yarn were studied experimentally. The theoretical results agreed very well with experimental data.

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“…Studies on various machine variables [11] conducted for DREF spinning machines have revealed that the air suction pressure is a significant factor for yarn hairiness. The increase of air suction pressure decreases the slippage between spinning drum cylinders and fibers.…”

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confidence: 99%

“…Others have drawn the conclusion that the twist distribution in the case of DREF-spun yarns was not uniform and had a loopy yarn surface causing it to be more hairy [7,8,10,11]. The effect of changing the DREF spinning process parameters like carding drum speed and suction pressure on the yarn properties has been reported [11]. "Friction spinning is an 'open end' or a 'core type' form of spinning (or both) in which, the yarn formation takes place with the aid of frictional forces in the spinning zone and the yarns are characterized by a distinct wrapper surface" [10].…”

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confidence: 99%