Some Relationships Between the Properties of Fibres and Their Behaviour in Spinning Using the Ambler Superdraft Method

Bastawisy, A. D.; Onions, W. J.; Townend, Paul

doi:10.1080/19447016108688410

Cited by 8 publications

(8 citation statements)

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“…This result was contrary to the earlier studies [5][6][7] using superseded machinery, where decreases in fibre strength were associated with reduced spinning efficiencies.…”

Section: Introductioncontrasting

confidence: 86%

“…Many of the earlier studies in this field were limited to top manufacture only. The results of those that did include spinning [5][6][7] have questionable applicability for today's industry owing to the older-style machinery and procedures employed.…”

Section: Introductionmentioning

confidence: 99%

“…The Importance of staple strength as a determinant of fibre length during topmaking is well documented [1][2][3][4][5][6][7], and recent work [8] has demonstrated that the position of weakness in the staple can also be an important factor affecting topraaklng performance. Many of the earlier studies in this field were limited to top manufacture only.…”

Section: Introductionmentioning

confidence: 99%

“…Earlier workers studying the Bradford system [5,6,9~11] concluded that a significant decrease in mean fibre length could occur in both drawing and spinning. Apart from mechanical variables, such as roving twist [6] and the spinning system [11], the actual decrease In mean fibre length was also dependent on fibre diameter [5,10] and fibre strength [5,6]. Studies of fibre breakage in spinning on the modern continental system are more limited.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Staple Strength and Position of Weakness of Greasy Wool on Worsted Spinning

Plate

Robinson

Rottenbury

1987

Journal of the Textile Institute

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An Investigation is reported In which tops manufactured from batches of greasy wool varying widely In staple strength and the location of the zone of weakness were converted to yam on the worsted system.The strength properties of the greasy wools were not related to the fibre breakage that occurred In producing yam, nor did they significantly effect spinning breaks or yam properties when spinning speed was similar to that used in coMnerclal practIce.At higher speed, however^ variatIons In spinning efficiency and yam properties were nore closely related to the differences In Hauteur In the tops and therefore to the strength properties of the greasy wool.

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“…This result was contrary to the earlier studies [5][6][7] using superseded machinery, where decreases in fibre strength were associated with reduced spinning efficiencies.…”

Section: Introductioncontrasting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Effect of Staple Strength and Position of Weakness of Greasy Wool on Worsted Spinning

Plate

Robinson

Rottenbury

1987

Journal of the Textile Institute

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“…There is a slightly positive correlation between RtC and mean fiber diameter for alpaca fibers, suggesting that the coarser fibers may offer greater resistance to compression, even though the fiber curvature is lower for coarser fibers, as shown in Figure 4. 1 When we conducted a multiple regression analysis on the effect of both diameter and curvature on RtC, we found an excellent correlation for wool, with an R2 value of about 0.97. In contrast, the correlation between RtC and the diameter and curvature of alpaca is still quite low, with an R2 of 0.21.…”

Section: Effect Of Fiber Diameter and Curvature On Rrcmentioning

confidence: 88%

Resistance to Compression Behavior of Alpaca and Wool

Liu

Wang

2004

Textile Research Journal

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This study compares the resistance to compression behavior of wool and alpaca fibers. It shows that alpaca fibers have a much lower resistance to compression than wool, and there is little correlation between the resistance to compression and the curvature for alpaca fibers. Yet for wool fibers, the correlation between resistance to compression and curvature is very strong and positive. The differences in fiber curvature and scale profiles of alpaca and wool, together with the test method for resistance to compression, may explain their different resistances to compression. Alpaca fibers are soft and are typically blended with Merino wool or other fibers for use in overcoats and high fashion knitwear. The development of the rare animal fiber industry has considerably increased interest in alpaca animals and alpaca fiber products. When touching alpaca and wool fibers, people often wonder why alpaca is so much softer than wool, even when the alpaca fibers are a few microns coarser than wool. Soft handle is a result of subjective evaluation [ 15], and involves a combination of fiber/fabric characteristics, such as surface roughness/smoothness, bending stiffness, compressibility, resilience, extensibility, fabric thickness, and so on.The fiber/fabric may be soft if it is smooth, easier to compress and suppler, and has a lower bending rigidity.The softness of loose wool depends heavily on its fiber diameter (FD) [ 19]. Crimp characteristics (crimp frequency and definition etc.) play a minor but significant role in softness through their influence on compressibility [ 17]. Many studies have reported the effect of crimp on quality of tops, yams, and fabrics, and on the ease of processing and spinnability [ 1, 2, 8 -11, 15, 20, 21 ]. The general agreement is that low crimp frequency is associated with longer hauteur in top, lower romaine in combing, better yarn evenness, and fewer ends-down. Low crimp wool can be spun into a finer count yam and produces a thinner, softer, smoother, leaner, and less pilling fabric. Because of the high correlation between crimp frequency and resistance to compression (RtC) [4,12,18], the softness of a knitted fabric is also related to the RtC value of raw wool. Madeley et al. reported that compressibility of knitted fabrics increases and bending rigidity decreases as loose fiber RtC decreases [10]. Fabric stiffness also decreases with decreasing loose fiber RtC and staple crimp. Fiber curvature may be used to describe the spacefilling properties of a mass of wool fibers [6]. There is a strong relationship between crimp frequency and curvature [23]. The inherent fiber curvature lies within the wool follicle [3], and staple crimp frequency is basically an expression of the curvature of the fibers within the staple [23]. Reductions in fiber curvature reduce fiber bending rigidity [111 and yam thickness [22] and increase the soft handle of fabrics.Since measuring resistance to compression (RtC) is an objective way to reflect fiber compressibility, and the latest fiber curvature (Cur) measureme...

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Theoretische Betrachtungen

Wegener¹

1965

Die Streckwerke Der Spinnereimaschinen

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Some Relationships Between the Properties of Fibres and Their Behaviour in Spinning Using the Ambler Superdraft Method

Cited by 8 publications

References 0 publications

The Effect of Staple Strength and Position of Weakness of Greasy Wool on Worsted Spinning

The Effect of Staple Strength and Position of Weakness of Greasy Wool on Worsted Spinning

Resistance to Compression Behavior of Alpaca and Wool

Theoretische Betrachtungen

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