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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. -
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. -
Premium Knitting & Crochet Tool Catalog
2015 PREMIUM KNITTING & CROCHET TOOL CATALOG Westing Bridge LLC designs, manufactures and wholesales the complete line of ChiaoGoo premium bamboo, wood, and stainless steel knitting and crochet tools. We are dedicated to offering high quality products with great overall value! ChiaoGoo bamboo needles are made of Moso bamboo, the largest and strongest bamboo in the world. Our craftsmanship is the result of over 100 years of experience passed down by generations of skilled craftsmen. Due to the quick, renewable nature of bamboo, we are proud that the products we offer are eco-friendly. Our stainless steel products are made of surgical-grade, stainless steel that is hypoallergenic and, in most cases, not reactive to sensitive skin. They have a nice smooth, satin sheen that won’t reflect any light making it hard to see your work. They are lightweight and strong! The needle is precisely machined resulting in perfect tips and joins. We take pride in providing excellent customer service to our customers in the United States and abroad. We have established a European Sales Office to assist those German and French speaking customers. Please refer to the back cover for contact information. We thank you for your interest in our ChiaoGoo products. SINGLE POINTS BAMBOO Our Patina and Natural Color Single Points have precisely tapered, hand-crafted tips. They are made of Moso bamboo which is the largest and strongest bamboo out of over 1,000 different species. The size is permanently laser imprinted on each needle and cap. The patina color is obtained with thermal heat. It is difficult to find bamboo large enough to produce needles larger than size US15 (10 mm). -
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. -
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. -
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. -
Progress of Intelligent Yarn Spinning Technology in China
Current Trends in Fashion Technology & Textile Engineering ISSN: 2577-2929 Opinion Curr Trends Fashion Technol Textile Eng Volume 1- Issue 1 - October 2017 Copyright © All rights are reserved by Zheng Tianyong DOI: 10.19080/CTFTTE.2017.01.555555 Progress of Intelligent Yarn Spinning Technology in China Zheng Tianyong* Department of Textile Engineering, Zhongyuan University of Technology, China Submission: September 22, 2017; Published: October 31, 2017 *Corresponding author: Zheng Tianyong, Department of Textile Engineering, Zhongyuan University of Technology, Zhengzhou, 450007, China, Email: Abstract The paper reviews the history, current situation and prospect of the Intelligent Yarn Spinning (IYS) technology in China, and points that IYS is the trend and keep developing in the futrue. Keywords: Intelligent yarn spinning (IYS); Intelligent management (IM); Digital workshop of yarn spinning Opinion main textile mills should digitize their manufacturing, designing, China is the largest country in textile production. There are more than 120M spinning spindles rotating and producing key equipment for China textile industry were released. Among nearly 19M tons of yarns in the country every year. A dramatic management and sales. In 2004, 28 developing fields and 10 change took place in the past 10 years to China textile industry. 10 key equipment were related to digitization. Afterwards, the Intelligent Yarn Spinning (IYS) technology comes into trend in them, 4 developing fields were related to digitizing and all the yarn manufacturing and -
Class Descriptions for Web 2016 Ptx.Pptx
SMFAF 2016 Learn and Do Classes BEGINNING SPINNING Jennifer Bennett ON A WHEEL www.harmonywoolsalpacas.com Jenny Bennett is the owner of Date: Saturday, April 16, 2016 Harmony Wools, one of the Time: 9:30 AM-11:30 AM original founding alpaca farms Location: GSM Heritage Center, of the Southeast Alpaca Main Gallery Association and has always Cost: $45.00, includes Materials been focused on fiber. With Fee over 30 years of spinning, Maximum No. of Students: 6 processing, weaving, knitting, teaching and demonstrating, Jenny is a wealth of knowledge in the area of fiber and spinning. For anyone who wants to learn to spin yarn on a spinning wheel. This class will cover parts of the wheels, their maintenance and how to choose a fleece or roving to spin. High School or Adult newbie's or novice spinners are welcome. Students should bring their Spinning wheel and fiber if they have one. An assortment of fiber will be available at the class. With two weeks of advance notice, the instructor, can bring a couple of wheels as loaners. SMFAF 2016 Learn and Do Classes Intermediate Spinning Jennifer Bennett www.harmonywoolsalpacas.com Jenny Bennett is the owner of Harmony Wools, one of the Date: Saturday, April 16, 2016 original founding alpaca farms of Time: 12:00 PM-2:00 PM the Southeast Alpaca Location: GSM Heritage Center, Association and has always Main Gallery been focused on fiber. With over Cost: $45.00 30 years of spinning, Maximum No. of Students: 6 processing, weaving, knitting, teaching and demonstrating, Jenny is a wealth of knowledge in the area of fiber and spinning. -
Area # 1 Area #2
Area # 1 Black Sheep Handweavers Guild 2-Clip Fringe Twister Knit Wits Kit for Making a Stuffed Penguin, including the Double Point Needles 3 Skeins of Yarn Glenna Harris Weavers’ Guild 1 Boat shuttle 1 Heddle maker 4 Balls Boucle’ Yarn, Beige 1) 1 oz. Bag of White Corriedale Roving 5 Bags Multicolor Roving, from 1 oz. - 5 ozs. Carmel Crafts Guild Harrisville Design Boat Shuttle 6 Wooden Bobbins Area #2 Del Oro Spinners & Weavers Guild Assorted yarns Bucilla Spice, 14) 1.75 oz. Skeins Bernat Fabri, 5) 2 oz. Skeins (600 yds. Ea.) 4 Burgundy, 1 Grey Peaches and Cream - 1 lb. Cone 4 Ply Cotton (Emerald Forest) Knitting Books - H ip to K n it by Judith Swartz & Tops to Toes edited by Kara Gott Warner Whole Rambouillet/Cormo fleece (unwashed) 6.5 pounds, 3.5" to 4" Staple Length Golden Valley Weavers and Spinnters 2 DVD’s - A rtists G u ide to Color an d D ou blew eave P ick u p Mother Lode Weavers and Spinners Our fiber basket is almost exclusively filled with fiber donated by fiber ranchers in Tuolumne and Calaveras Counties. The MLW&S Guild is fortunate to include a versatile range of fiber artists & ranchers. We wish to take this opportunity to thank all of our vendors for their generous donations to this basket. The fiber basket also includes a book, written and donated by Peggy Huth, about a little sheep named Bummer (a true story). The book is a sweet story with heartfelt illustrations that will delight children of all ages. -
Short Staple Pre-Spinning Machinery at ITMA ’03
Volume 3, Issue 3, Fall 2003 Short Staple Pre-Spinning Machinery at ITMA ’03 Wade Carter N.C. State University, College of Textiles, Extension and Applied Research Email: [email protected] ABSTRACT Short staple pre-spinning machinery shown at ITMA’03 in Birmingham, England emphasized compact opening lines with integrated multi-functional equipment. New technologies in carding included new machinery design, monitored and controlled waste removal, and a lengthened carding zone. Drawing innovations included a self-optimizing system for setting the break draft and an automatic quick adjustment of roller spacing. No new developments were shown in the short staple lap winding and combing areas. The only interesting feature shown on roving machines was a quick doffing system. Keywords: Opening/Cleaning/Blending, Carding, Lapping/Combing, Drawing, Roving Opening/Cleaning/Blending classical tasks of opening, cleaning, and blending, the functions of fire protection, There were fewer machines and vendors micro-dust removal and foreign fiber exhibiting in these process areas than in the separation are now integrated. The previous four ITMA exhibitions. Notably implications for short staple yarn producers absent were Rieter and Crosrol. Since would be lower space requirement, less ITMA’99 Crosrol has gone out of business. exhaust air, lower energy consumption, and Marzoli had a booth at the show but did not lower maintenance and setting expenditure. exhibit any machinery in this area. The four Trutzschler components making up the compact line are as follows: Trutzschler 1. Automatic Bale Opener Several new developments were BLENDOMAT BO-A introduced by Trutzschler in the opening 2. Multi-function Separator SP-MF room area of short staple processing. -
PRELIMINARY TREATMENT of FIBRES, E.G. for SPINNING (Winding Or Unwinding, Conducting Or Guiding Laps, Webs, Slivers Or Roving
D01G CPC COOPERATIVE PATENT CLASSIFICATION D TEXTILES; PAPER TEXTILES OR FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR D01 NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING (NOTE omitted) D01G PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING (winding or unwinding, conducting or guiding laps, webs, slivers or rovings in general, sliver or roving cans, depositing in sliver or roving cabs B65H; preparation of fibres for paper-making D21) NOTE Attention is drawn to the note following the title of Class D01. WARNING In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. 1/00 Severing continuous filaments or long fibres, e.g. 9/08 . by means of air draught arrangements stapling 9/10 . using foraminous cylinders (foraminous suction 1/02 . to form staple fibres not delivered in strand form cylinders for lap-forming D01G 25/00) 1/022 . {by solvents} 9/12 . Combinations of opening or cleaning machines 1/025 . {by thermic means, e.g. laser} 9/14 . Details of machines or apparatus 1/027 . {by freezing} 9/16 . Feeding arrangements (fibre-feeding apparatus 1/04 . by cutting of general application in fibre-treating machines 1/06 . Converting tows to slivers or yarns, e.g. in D01G 23/00) direct spinning (drafting arrangements, twisting 9/18 . Arrangements for discharging fibres arrangements D01H) 9/20 . Framework; Casings; Coverings; Grids 1/08 . by stretching or abrading 9/22 . Driving arrangements 1/081 . {with preferential breaking zones} 11/00 Disintegrating fibre-containing articles to obtain 1/083 . {obtained by mechanical means, e.g.