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Influence of Process Parameters on the Properties of Friction-Spun Yarns
Indian Journal of Fibre & Textile Research Vol.18,March 1993,pp.14-l9 Influence of process parameters on the properties of friction-spun yarns A R Padmanabhan & N Ramakrishnan The South India Textile Research Association, Coimbatore 641 014, India Received 9 June 1992; revised received 23 October 1992; accepted 24 November 1992 The effects of spinning drum speed, yam delivery rate, core-wrapper ratio and number of wrapper slivers on the quality characteristics of yams spun on a laboratory model DREF-3 friction spinning ma- chine have been studied. It is observed that by and large, drum speed and per cent wrapper fibres deter- mine the yarn tenacity while the delivery rate and the per cent core fibre content influence the yam un- evenness. Keywords: Carding drum, Drum speed, Friction-spun yarn, Yarn tenacity, Unevenness, Wrapper fibres t Introduction drafting unit II with different core-to-wrapper ratios The quality of the yarn obtained from any spinn- and at different delivery rates. ing system depends on the quality of raw material In each count, 12 yarn samples, three for each of used as well as on the process parameters employed the four process variables, were produced by suit- during spinning. Friction spinning is no exception to ably altering the spinning parameters as listed in this. While many research workers have studied in Table 2. While varying the parameters, care was tak- detail the influence of process variables on yarn en to ensure that only one parameter was changed at quality in both ring and rotor spinning, such an in- a time, keeping the other three at the following opti- formation with regard to friction spinning appears mum level as suggested by the manufacturer. -
Textile Industry Needs Christopher D
The Journal of Cotton Science 21:210–219 (2017) 210 http://journal.cotton.org, © The Cotton Foundation 2017 ENGINEERING & GINNING Textile Industry Needs Christopher D. Delhom, Vikki B. Martin, and Martin K. Schreiner ABSTRACT lthough the immediate customer of the gin is Athe cotton producer, the end user of the ginned The immediate customers of cotton gins are lint is the textile mill, retailers, and eventually the the producers; however, the ultimate customers consumer. Thus, it is essential for the ginner to are textile mills and consumers. The ginner has satisfy both the producers and the textile industry. the challenging task to satisfy both producers and Consequently, the ginner needs to be aware of the the textile industry. Classing and grading systems needs of the textile industry. are intended to assign an economic value to the The intent of the cotton classing and grading bales that relates to textile mill demands and the system is to assign an economic value to the bale that quality of the end product. International textile documents its properties as it relates to the quality of mills currently are the primary consumers of U.S. the end product. Since the last edition of the Cotton cotton lint where it must compete against foreign Ginners Handbook in 1994, the customers of U.S. origins. International textile mills manufacture cotton have changed radically, shifting from primar- primarily ring-spun yarns, whereas domestic mills ily domestic to international mills. International mills manufacture predominantly rotor spun yarns. Pro- have been accustomed primarily to hand-harvested ducers and ginners must produce cottons to satisfy cotton that has been processed at slow ginning all segments of the industry, i.e., domestic and in- rates. -
Self-Determined Family Living Division
2009 Clark County Fair Exhibitor Handbook 4-H Family & Consumer Science Division Page 21 of 48 SELF-DETERMINED FAMILY LIVING DIVISION SPINNING Superintendent: Deborah Reida (360) 687-5274 CLASS 675: BLENDING FIBERS 1. On a 3”x 5” index card, state your age and how long you’ve been enrolled in the spinning project. 2. Must provide clean, uncarded fibers of the same fibers used to produce the exhibit. Put the index card and fibers into a small ziplock bag, and attach this to the exhibit. 3. Lots A through E, submit three (3) rolag for each lot. 4. Lots F through J, submit 1 batt for each lot. Points: Blue-7, Red-5, White-3. LOTS: A. Sheep wool/sheep wool - hand carded B. Sheep wool/animal fibers - hand carded C. Sheep wool/natural fibers - hand carded D. Sheep wool/synthetic fibers - hand carded E. Other - hand carded F. Sheep wool/sheep wool - drum carded G. Sheep wool/animal fibers - drum carded H. Sheep wool/natural fibers - drum carded I. Sheep wool/synthetic fibers - drum carded J. Other - drum carded CLASS 680: ROLAGS Have the following information for each exhibit: 1. On a 3”x 5” index card, state your age and how long you have been enrolled in the spinning project. 2. Must provide clean fiber(s) used to produce the exhibit. 3. Lots A through C- submit three (3) rolags each. Put the index card and fibers into a small ziplock bag, and attach this to the exhibit. Points: Blue-6, Red-4, White-2. LOTS: A. -
Start Spinning: Everything You Need to Know to Make Great Yarn Ebook
START SPINNING: EVERYTHING YOU NEED TO KNOW TO MAKE GREAT YARN PDF, EPUB, EBOOK Maggie Casey | 120 pages | 01 Apr 2008 | Interweave Press Inc | 9781596680654 | English | Loveland, CO, United States Start Spinning: Everything You Need to Know to Make Great Yarn PDF Book To make two-ply yarn, take two singles strands or both ends of the same strand , attach them both to your spindle, and twist them around each other in the opposite direction from how you originally spun them. When you spin, you put twist into fibres so that they hold together to form a continuous thread. Navajo Plying - Making a three-ply yarn 8. Designed to appeal to the beginning spinner, tips and hints are provided that illustrate how easy, enjoyable, and relaxing spinning can be. When I was in Kenya, women spun Romney wool chiefly "in the grease," but it often locked in large amounts of dirt in the process. Spin spin spin! Covers fiber characteristics, preparation and spinning, choosing a wheel, and crafting the finished yarn into useful and attractive pieces. I Made It! Leave the original loop of fiber anchored on the spindle hook. Description If you are a knitter or crocheter looking to take the step from just using manufactured yarn to making your own this is a great book to get you started. A bunch of loose fibers will fall apart if you pull on their ends. Launching a Patreon! First and foremost, you want a balanced drop spindle that spins true. Either one will do just fine to learn on. It is also much easier to learn to spin wool than silk, or cotton and other vegetable fibres. -
Results Vintage & Jewellery
Results Vintage & Jewellery, No. Item Hammer price 1 A brilliant cut diamond ring, 1.35 ct. 35 000 SEK 2 A pair of 12 mm cultured South sea pearl, pink sapphire, peridote and diamond earrings. Unsold 3 A cultured pearl and brilliant-cut diamond brooch. 8 000 SEK 4 A brilliant-cut diamond necklace. Unsold 5 A brilliant-cut diamond, 1.01 cts, ring. Quality F/ VVS1 according to HRD certificate. Unsold 6 A brilliant-cut diamond, circa 1.74 cts, solitaire ring. Quality H/VVS2. Unsold 7 A diamond, circa 1.00 ct, and sapphire ring. Flexible parts. Unsold 8 A pair of Tahiti pearl, 13 mm, and diamond, circa 0.36 ct, earrings. 13 000 SEK 9 A brilliant-cut diamond brooch. Total carat weight circa 2.00 cts. Unsold 10 A South Sea pearl, circa 14.8 x 12.8 mm, and diamond, ca total 0.08 ct, pendant. Unsold 11 A tourmaline, total carat weight 16.20 cts, and diamond, total carat weight 2.99 cts. Unsold 12 A pair of cultured South sea pearl and brilliant-cut diamond earrings. Unsold 13 A NECKLACE, south sea pearls 14.3-17.0 mm. Clasp with multicolor sapphires c. 7.50 Unsold cts. Length 42 cm. 14 A pink sapphire, circa 1.55 cts, and diamond, total circa 0.7 ct, ring. 12 000 SEK 15 A pair of pearl and diamond earring. 12 000 SEK 16 A brilliant-cut diamond ring. Total gem weight 2.48 cts. Unsold 17 A pair of amethyst and diamond, circa 0.60 ct, earrings. -
India's Textile and Apparel Industry
Staff Research Study 27 Office of Industries U.S. International Trade Commission India’s Textile and Apparel Industry: Growth Potential and Trade and Investment Opportunities March 2001 Publication 3401 The views expressed in this staff study are those of the Office of Industries, U.S. International Trade Commission. They are not necessarily the views of the U.S. International Trade Commission as a whole or any individual commissioner. U.S. International Trade Commission Vern Simpson Director, Office of Industries This report was principally prepared by Sundar A. Shetty Textiles and Apparel Branch Energy, Chemicals, and Textiles Division Address all communications to Secretary to the Commission United States International Trade Commission Washington, DC 20436 TABLE OF CONTENTS Page Executive Summary . v Chapter 1. Introduction . 1-1 Purpose of study . 1-1 Data and scope . 1-1 Organization of study . 1-2 Overview of India’s economy . 1-2 Chapter 2. Structure of the textile and apparel industry . 2-1 Fiber production . 2-1 Textile sector . 2-1 Yarn production . 2-4 Fabric production . 2-4 Dyeing and finishing . 2-5 Apparel sector . 2-5 Structural problems . 2-5 Textile machinery . 2-7 Chapter 3. Government trade and nontrade policies . 3-1 Trade policies . 3-1 Tariff barriers . 3-1 Nontariff barriers . 3-3 Import licensing . 3-3 Customs procedures . 3-5 Marking, labeling, and packaging requirements . 3-5 Export-Import policy . 3-5 Duty entitlement passbook scheme . 3-5 Export promotion capital goods scheme . 3-5 Pre- and post-shipment financing . 3-6 Export processing and special economic zones . 3-6 Nontrade policies . -
Copyrighted Material
Index dystocia, 512 A following up on, 511 gestation periods, 510 acidity levels, in foods, 33–34 giving up on newborns, 514 acquiring farm animals orphaned babies, 513 adopting from rescue group, 479 preparing for, 510–511 animal shows, 476 rejected babies, 512–513 auctions, 479–480 animal care. See also shearing breeders, 477–478 bathing, 483 county and state fairs, 478–479 bottle-feeding, 493–494 from friends and neighbors, 477 coats, brushing and cleaning, 483 Internet, 476 exercise, 492 judging individual animals, 476 grooming, 483 local or out of state, 474–475 hooves, checking, 483–484 magazines, 476 hygiene, 481–484 neighborhood bulletin boards, 478 shelter, 482, 492–493 newspapers, 478 shoeing, 484 online classifi eds, 478 toes, trimming, 483–484 seeking expert advice, 476 water, providing clean, 488–492 sellers, 475–476 animal feed, 484–488 when to buy, 474 animal fi bers. See fi bers additives, candle-making, 220–221 animal health adiabatic temperature, 395 birthing season, 509–514 adopting farm animals, 479 deworming, 507 Africanized bees, 528 fi rst-aid kit, 498–500 aggression in animals, 494–495 overview, 497 AgriSeek, 478 signs of sickness, 504 alfalfa, 611 taking temperatures, 505–506 aloe vera, 612 treating minor scrapes and cuts, 506–507 alpacas, 109, 465–466 vaccinations, 501–503 altocumulus lenticularis, 393 veterinary service, 508–509 altostratus clouds, 393 vitamins and supplements, 507–508 aluminum foil, 90 animal shows, 476 American ginseng, 593, 627 animals, farm. See farm animals anemia, 560 COPYRIGHTEDantibiotic -
Greek and Roman Textiles and Dress Ebook
GREEK AND ROMAN TEXTILES AND DRESS PDF, EPUB, EBOOK Mary Harlow | 320 pages | 28 Feb 2015 | Oxbow Books | 9781782977155 | English | Oxford, United Kingdom Greek and Roman Textiles and Dress PDF Book The two scholars conclude that the technological innovation in textile production came from the east during all these periods. They had a chiton, which probably involved a certain amount of real sewing, although most of the needlework done by Greek women was in the form of embroidery. The spinster continued to feed tow from the distaff into the growing length of yarn until the spindle reached the floor. The peplos was fastened at the shoulders, armhole openings were left on each side, and the peplos might or might not be cinched with a belt. Caron, Beaudouin. Moffett, Kenworth. Italian Peninsula, B. Piotrovsky, Boris. Schlesinger Jr. It accompanies a major exhibition on view during the spring-summer of at The Costume Institute. Greene, Andrew. Her subject of study are the fullonicae of Ostia, for which she provides a number of diagrams illustrating the viewsheds from various locations within the workshops. Exchange was, not surprisingly, more common in the area of limes , but barbarians also exchanged Roman textiles with other barbarians, as is shown by Roman finds in the Baltic area of Poland. Tucker, Priscilla. Degas: The Artist's Mind. But opting out of some of these cookies may have an effect on your browsing experience. A short summary of this paper. Daniel, Malcolm. Rosenthal, Nan. Lazzarini, Lorenzo and Clemente Marconi. Greek and Roman Textiles and Dress Writer By merging the study of Greek religion and the study of textiles, the current study illustrates how textiles are, indeed, central materialisations of Greek cult, by reason of their capacity to accentuate and epitomize aspects of identity, spirituality, position in the religious system, by their forms as links between the maker, user, wearer, but also as key material agents in the performance of rituals and communication with the divine. -
7. Wool Combing
7. Wool Combing Errol Wood Learning objectives On completion of this topic you should be able to: • Outline the objectives of wool combing • Describe the design of a typical rectilinear comb • Explain the steps in rectilinear combing – feeding, initial combing, final combing and drawing off, and sliver formation • Discuss the means by which noils are removed, and the balance required in setting the amount to be removed • Explain the purpose of re-combing • Calculate: tear ratio, noil(%), romaine, regain and combing production • Discuss the factors that affect the combing quality of fine wools Key terms and concepts Combing (Nobel and rectilinear), nips per minute, doublings, noils, finisher gilling, packaging, re- combing, tear, noil(%), romaine, percent fibres less than 30 mm, combing production. Introduction to the topic Wool combing is a comprehensive term when used in its widest sense, and it embraces all the operations carried out in a topmaking plant. It includes the processes of raw wool scouring, drying, carding, backwashing and preparer gilling. Then follows the actual combing operation and the sequence of topmaking processes concludes with two gilling steps called top finishing (or finisher gilling). Combing is not included in the semiworsted or woollen processing routes. Wool combing, the single process, is indispensable in the manufacture of a worsted yarn. The card has disentangled the fibres in the mass of scoured wool and has mixed them in a roughly parallel formation. However, during the carding process many fibres will have been broken, and the card sliver will consist of a variety of fibre lengths. Some vegetable matter will have been removed but fragments remain. -
Need for Lap Preparation
Need for Lap preparation: The combers are fed with a small lap produced by combining several slivers. The raw material delivered by the card is unsuitable for combing as regards both form and fiber arrangement. If card slivers were just combined and fed to the comber, true nipping by the nipper plates would occur only on the high points, with the risk that the nippers could not retain the less firmly compressed edge zones of the slivers asshown in the below fig. This is because the slivers are not flattened. The fibres could then be pulled out as clumps by the circular combs during combing operation. A sheet with the greatest possible degree of evenness in cross section, with uniform thickness is therefore required as in-feed to the comber. Effect of fibre presentation: The fiber arrangement must also be taken into account, i.e. in this case the disposition of the hooks. If the comber is to straighten hooks, as it is intended to, then the fibers must be presented to it with leading hooks. The carded slivers have trailing hooks as the majority hooks (more than 50%) as the sliver emerges out of the calendar rollers in the carding machine. Each time the sliver is packed in a can and taken out, the majority hooks change. For example, as the sliver is withdrawn from the card can, the original trailing hooks (as the sliver went into the can) are now counted as the leading hooks as can be seen in Fig. Hence, at this stage majority hooks are the leading hooks. -
The Textile Machinery Collection at the American Textile History Museum a Historic Mechanical Engineering Heritage Collection
THE TEXTILE MACHINERY COLLECTION AT THE AMERICAN TEXTILE HISTORY MUSEUM A HISTORIC MECHANICAL ENGINEERING HERITAGE COLLECTION Textiles are an important part of our everyday lives. They clothe and comfort us, protect our first-responders, Introduction filter the air in our automobiles, and form the core of the fuselage in our newest aircraft. We enjoy their bright colors, wrap up in their warmth, and seldom give a second thought to how they make bicycles stronger and lighter or how they might be used to repair our vital organs. As textiles have changed from the first simple twisted fibers to high-tech smart fabrics, the tools and machinery used to make them have evolved as well. Drop spindles and spinning wheels have given way to long lines of spinning frames. And looms now use puffs of air instead of the human hand to insert the weft thread in a growing length of fabric. During the eighteenth and nineteenth centuries, textile manufacture was the catalyst for the Industrial Revolution in America. It was the leading edge in the transformation from an agricultural to a manufacturing economy and started the move of significant numbers of people from rural areas to urban centers. With industrialization came a change in the way people worked. No longer controlled by natural rhythms, the workday demanded a life governed by the factory bell. On the consumer side, industrialization transformed textiles from one of a person’s most valuable possessions to a product widely available at incredibly low prices. For more than a century, textile mills in Great Britain and the United States dominated textile production and led the industrial revolution in both Europe and North America. -
Production of Shape Memory Alloy Core- Sheath Friction Yarns
M. R. Ahmad, M. H. M. Yahya1), Production of Shape Memory Alloy Core- *M. R. Hassan, J. Salleh, Sheath Friction Yarns W. Y. W. Ahmad, Abstract N. Hassim This paper describes some studies on the development of shape memory alloy (SMA) core- sheath friction yarns. SMA wires for actuating purposes were utilised as a conductive ele- ment in the core-sheath friction yarn. A DREF 3000 friction spinning machine was used to produce the yarns. The conductive yarn was spun with the SMA actuator wire at the core and 100% cotton fibers in the second layer as the sheath producing a yarn called SMA Faculty of Applied Sciences, Universiti Teknologi MARA, core-sheath friction yarn (SMA CSFY). During spinning, the core-sheath ratio and spinning Shah Alam, Selangor, Malaysia drum speeds were varied. The main purposes of the study were to evaluate the SMA CSFY single yarn tensile strength and its actuating performance against changes in the spinning *Faculty of Engineering, process parameters. The results showed that SMA CSFY with the highest spinning drum Universiti Putra Malaysia, speed and 60% core gave the highest tensile strength and fastest actuation performance. Serdang, Malaysia 1)Corresponding author: [email protected] Key words: shape memory alloy, DREF 3000 spinning system, conductive yarn. natural and synthetic fibres from 32 to ity, increasing the yarn strength and im- 60 mm in length [8]. Technically fibres parting any functional fibre to the yarn n Introduction from a card sliver are opened into indi- produced. Figures 1.a and 1.b illustrate vidual fibres. The opened fibres (reduced the cross-sections and longitudinal view The growing development of smart tex- size fibres) are then transfered onto the of core-sheath friction yarns from the tiles is changing the point of view of spinning drums, which are rotating in the DREF 2000 and DREF 3000 spinning world textile fashion from traditional same direction with the assisstance of an systems.