Effects of Filament Modulus and Linear Density on the Properties of Air-Jet Textured Yarns

Sengupta, Amartya; Kothari, V. K.; Sensarma, J.K.

doi:10.1177/004051759606600706

Cited by 13 publications

(7 citation statements)

References 5 publications

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“…The textured yarn made of finer filament poses higher loop frequency, lower loop height, which results in superior bulk characteristics of finer filament textured yarns. The higher level of filament entanglement in the core of finer filaments, due to easy bending increases the frictional area of contact within the yarn matrix, thus increasing the stability of the finer filament yarn (Sengupta et al, 1996).…”

Section: Effect Of Linear Density Per Filamentmentioning

confidence: 99%

“…The performance of air-jet texture yarn is greatly influenced by feed yarn properties like linear density per filament, filament cross-section and frictional characteristics; and texturing process parameters like overfeed, air pressure and texturing speed. Several attempts have been made to study the influence of texturing parameters on resultant yarn properties like physical bulk, instability and loss in tenacity (Acar, Turton, & Wray, 1986a, 1986b, 1986cDemir, Acar, & Wrey, 1986, 1988Kothari, Mukhopdhyay, & Kaushik, 2001Kothari, Sengupta, & Rengasamy, 1991;Mahish, Punj, & Kothari, 2010;Palta and Kothari, 2002;Rengasamy, Kothari, & Patnaik, 2004;Rengasamy, Kothari, & Sengupta, 1990a, 1990bSengupta, Kothari, & Alagirusamy, 1989;Sengupta, Kothari, & Sensarma, 1996). However, explanation in terms of the potential contribution of individual parameter to explain the variability of the resultant yarn properties is not reported.…”

Section: Introductionmentioning

confidence: 99%

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Effect of feed filament fineness and process parameters on air-jet textured yarns properties

Baldua

Kothari

Rengasamy

2014

Journal of the Textile Institute

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Effect of linear density per filament, overfeed, air pressure and texturing speed on experimental values of physical bulk, instability and loss in tenacity of air-jet textured yarn has been discussed. Potential contribution of each of the variables to explain the properties of air-jet textured yarn is evaluated on the basis of normalized regression coefficients and analysis of variance obtained with the help of multiple regression model formed to predict the air-textured yarn properties. Analysis has shown that most dominating factor to explain the variability in air-jet textured yarn properties is overfeed percentage. Second most influencing variable to explain the variability in air-jet textured yarn properties is linear density per filament in the case of physical bulk and yarn instability and air-pressure in case of loss in tenacity.

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Section: Effect Of Linear Density Per Filamentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of feed filament fineness and process parameters on air-jet textured yarns properties

Baldua

Kothari

Rengasamy

2014

Journal of the Textile Institute

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“…Some basic studies, which are carried out aiming to understand fiber-air interactions during texturing or mingling are reported in literature [24][25][26][27][28][29][30][31]. During texturing, filaments are subjected to countenance bending and torsional deflections under fluid forces.…”

Section: Effect Of Raw Materials Parametersmentioning

confidence: 99%

Commingled and Air Jet-textured Hybrid Yarns for Thermoplastic Composites

Alagirusamy

Ogale

2004

Journal of Industrial Textiles

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Hybrid yarns have reinforcing and matrix-forming filaments combined together in order to reduce the problems associated with high melt viscosity of thermoplastic matrices. Among hybrid yarns, commingled and air-textured yarns, which are produced with air jets have demonstrated high flexibility and good mixing of constituent filaments. Many research findings have been reported on the structure and properties of intermingled and air-textured yarns having low-modulus apparelgrade filaments. The relationships between air jet, filament yarn, and the processing parameters are critically reviewed. It is emphasized that there is an immediate need to study the mixing behavior of combination of high-and low-modulus filaments in air jet, which has not been investigated in detail in the published literature, in order to improve the mixing of these filaments. The methods used to characterize hybrid yarns are discussed. The need to study and improve the stability of the hybrid yarns in terms of maintaining the level of mixing of constituent filaments across the cross section is also established.

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“…They studied the ozone treatment to improve the surface property of aramid fiber, which enables to overcome its very poor interfacial adhesion to most of the commercial resins, like the surface modification of carbon fibers using plasma technique. [2] On the other hand, Bilgin et al [3] and Sengupta et al [4] examined the air-jet texturing process and its physical properties with entangled loop formation on the air textured yarn surface. In addition, many studies have examined ways of overcoming the drawbacks of the yarn mechanical properties after air-jet texturing, [5−13] but their findings have been inconsistent.…”

Section: Introductionmentioning

confidence: 99%

Effects of Processing Parameters on the Mechanical Properties of Aramid Air Textured Yarns for Protective Clothing

Kim¹,

Kim

2018

Autex Research Journal

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This study examined the mechanical properties of a para-aramid filament according to the processing conditions of air-jet textured yarns (ATY). The specimens were prepared by changing the yarn speed, over feed ratio, air pressure, and heater temperature, which are important processing factors in the ATY process. The basic physical properties of the ATY, such as denier, tenacity, breaking strain, and initial modulus, were measured and their thermal shrinkage, such as dry and wet shrinkage, were measured to determine the thermal stability of the aramid ATY. In addition, the instability of para-aramid ATY were measured and assessed with the loop formation of ATY, according to the ATY process parameters. An examination of the effects of process parameters on the physical properties of aramid ATY revealed the core overfeed and air pressure to be the main factors. A high core overfeed and air pressure make the aramid ATY crimpy in the yarn core and entangle the fluffy loops on the yarn surface, resulting in an increase in the yarn linear density and breaking strain as well as a decrease in the tenacity and initial modulus. In contrast, these yarn physical properties were unaffected by the yarn speed, heater temperature, and wetting treatment. In addition, the dry and wet thermal shrinkage were unaffected by the process parameters of ATY. On the other hand, the instability decreased with increasing core overfeed and heater temperature and increased with increasing air pressure. These results showed that a high core overfeed makes the aramid ATY crimpy with an entangled yarn structure, and high air pressure helps provide small loops on the yarn surface. Finally, a high heater temperature makes the crimpy ATY structure more stable due to the strong heat set, which results in low instability.

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Effects of Filament Modulus and Linear Density on the Properties of Air-Jet Textured Yarns

Cited by 13 publications

References 5 publications

Effect of feed filament fineness and process parameters on air-jet textured yarns properties

Effect of feed filament fineness and process parameters on air-jet textured yarns properties

Commingled and Air Jet-textured Hybrid Yarns for Thermoplastic Composites

Effects of Processing Parameters on the Mechanical Properties of Aramid Air Textured Yarns for Protective Clothing

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