The Internal Structure of Sheath Fibre in DREF-3 Yarn

Ishtiaque, S. M.; Agrawal, D. P.

doi:10.1080/00405000008659127

Cited by 14 publications

(7 citation statements)

References 8 publications

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“…It offers less spinning tension to the core and core will be positioned exactly at the centre of the yarn. The friction spinning system consists of opening and individualization of fibers from slivers, reassembling of individualized fibers, twisting, and winding of yarn [14][15][16]. To produce uniform core-sheath structure, the core-sheath ratio, yarn delivery speed, and core filament tension are influenced by the quality of the core yarn production [17].…”

Section: Development Of Signal Transferring Fabrics Using Pofsmentioning

confidence: 99%

Development of Signal Transferring Fabrics Using Plastic Optical Fibers for Defense Personnel and Study their Performance

Kumar

Vigneswaran

Ramachandran

2010

Journal of Industrial Textiles

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In this article, an attempt has been made to design and develop four different signal transferring fabrics using plastic optical fibers (POF). The signal transferring and fabrication possibility of these optical fibers are studied and selected optical fibers are made into fabric form by four methods namely (a) sequential work with POF integrated in the fabric, (b) weaving of the POF using hand loom, (c) weaving of the POF using power loom, and (d) weaving of POF as core conductive fabrics. Novel technique for development of core-sheath conductive yarns with optical fiber as core and cotton fibers as sheath using DREF-3 friction spinning system is discussed. The signal transferring efficiency of the handloom, power loom, and sequential integrated woven POF fabrics are analyzed using the microprocessor designed with IRF14F optical receiver for bullet wound detection. Downloaded fromThe signal loss percentage of these fabrics are studied and reported using the red LED, white light LED (SPL), and laser light LED with input voltage of þ5 V. These optical conductive yarns are having good scope for the development of signal transferring garment for defense personnel, telecommunication, and data transferring purpose.

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Section: Development Of Signal Transferring Fabrics Using Pofsmentioning

confidence: 99%

Development of Signal Transferring Fabrics Using Plastic Optical Fibers for Defense Personnel and Study their Performance

Kumar

Vigneswaran

Ramachandran

2010

Journal of Industrial Textiles

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“…This process is not only cost effective compared to plying of yarn but also gives better spinning performance and yarn quality as observed by various researchers [14][15][16][17][18][19][20]. Isthiaque and Agarwal in their study on core sheath yarn illustrate that apart from raw material properties, the geometrical arrangement of fibres within the yarn structure significantly influences the mechanical properties of the yarn [15]. Sawhney et al also observed that bi-component core sheath yarn demonstrated high yarn strength than the homogeneously blended single yarn [21].…”

Section: Introductionmentioning

confidence: 99%

New approaches to engineer the yarn structure; Part A: For better carpet performance

Ishtiaque¹,

Sen²,

Kumar³

2013

Journal of Industrial Textiles

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Invariably different fibres are mixed homogeneously at yarn stage to obtain the desired carpet characteristics such as resiliency, lustre, reduced shedding and cost reduction. In order to fully exploit the individual fibre characteristics, i.e. fibre diameter, medullation and bending rigidity, an attempt has been made to engineer the carpet yarns to strategically position different characteristics of fibre across the yarn cross-section. Accordingly three layered engineered yarns of 4 Nm linear density of different fibre components as in control yarns, i.e. Malpura Magra and Chokla wools to 1:4:5 in inner, middle and outermost layer, respectively, were produced by using modified SIRO spinning method on worsted spinning system. The recovery property of yarns was found to be better for all engineered yarns as compared to control yarns. Carpet made from considered yarns were subjected to compression, dynamic loading and abrasion for assessing their performance. Higher bending rigidity and recovery properties of control and engineered yarns have improved the carpet performance. Carpet resiliency was found to be better for carpet made from engineered yarns. The engineered yarn carpets give lower abrasion loss and carpet thickness loss under dynamic loading. Among all the control and engineered yarns, carpets made from two layered roving to obtain threelayered yarn have yielded best results.

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“…The sheath fibres after passage through the second drafting unit and are deposited over core filaments by the air stream and wrapped over the core by the rotating action of the drums [4,5]. The properties of friction -spun yarns, ring-spun yarns and other yarns spun on modern spinning systems have been compared by several authors [7][8][9][10][11][12] and the findings have been at times divergent because of the differences in raw material and processing conditions. Padmanabhan and Ramakrishnan [8] found that the filament core Dref-3 spun yarn is stronger than 100% cotton yarn and cotton core yarn by about 13% and 20% respectively.…”

Section: Introductionmentioning

confidence: 99%

Development of Electromagnetic Shielding Wearable Electronic Textiles using Core Conductive Fabrics

Vigneswaran¹,

Kandhavadivu²

2013

IJSEA

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Today wearable electronics are playing a vital role in many applications such as Military, Medical application, telecommunications and health care garments. Conductive textiles also provide wide range of applications in areas of civilian and military purposes. In this research work an attempt has been made to design and develop core-sheath conductive yarns with copper filament and optical fibre as core and cotton as sheath using Dref-3 Friction spinning system. The special guide mechanism has been designed and used to produce uniform structure of core-sheath conductive yarns. Three different core-sheath ratios such as 67/33, 80/20 and 90/10 respectively, were produced by varying the draft in the second drafting unit which fed the cotton carded slivers to cover the core component. Copper filament of 38 SWG British Standard Gauge has been used as core component. The nominal count of core-sheath conductive yarn produced in this research was 328 tex and core component kept as constant 261 tex for all the yarn samples. Optical core conductive yarns are produced by using CK-20 type optical fibres. The process parameters such as perforated drum speed and yarn delivery speed are 4000 revolution per minute and 70 metres per minute respectively, kept as constant for all the samples. The copper core conductive yarns were used to develop the conductive fabrics. These fabrics have very good scope for many applications for development of electromagnetic shielding wearable textiles, mobile phone charging and body temperature sensing garments. It also has the optical fibre core conductive yarns which were used for the development of signal transferring garment for telecommunication and data transferring purpose. In this work two sensors have been integrated in sensorized garments for monitoring the body temperature. Moreover, it has been pointed out the use of these sensorized garments as a valid alternative to existing instrumentations which are in several health care areas. The results on the copper core conductive yarns and Optical core conductive yarns have studied. The characteristics of core conductive fabrics such as air permeability, tensile strength, electromagnetic shielding effect, aerial density, and fabric cover factor have been analysed. The performance of the conductive fabric garment has been briefly reported. The copper core conductive yarn, Optical core conductive yarn, copper conductive fabric and conductive fabric garment have the very high potential which is to be commercialized.

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The Internal Structure of Sheath Fibre in DREF-3 Yarn

Cited by 14 publications

References 8 publications

Development of Signal Transferring Fabrics Using Plastic Optical Fibers for Defense Personnel and Study their Performance

Development of Signal Transferring Fabrics Using Plastic Optical Fibers for Defense Personnel and Study their Performance

New approaches to engineer the yarn structure; Part A: For better carpet performance

Development of Electromagnetic Shielding Wearable Electronic Textiles using Core Conductive Fabrics

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