Pdf effect of twist on yarn properties researchgate. Page 47 the spindle, which hangs from the fibers, twists the fibers as it rotates downward, and spins a length of yarn as it pulls away from the fiber bundle. Nowadays, blending of spinning waste with virgin cotton is a common phenomenon in rotor spinning intended to lower the production cost. They are the perfect choice for knitting shawls, scarves, cowls, mittens, gloves and hats as well as socks. As a result, understanding the relationships between properties of. Measure of the spiralling orien tation of the fibres in a spun yarn or of the filaments in a filament yarn. Effect of elastane denier and draft ratio of corespun. Analysis on the defects in yarn manufacturing process. In the combing operation, fibres shorter than length of fibres or certain fixed percentage of short.
The tight belts on the surface of the selected yarn samples were counted, and the. Bharti department of mechanical engineering integral university, lucknow, india yarn. The spinning process, yarn folding, yarn preparation winding, tensioning. Final package of yarn is the end and may chance the customer complaint. Date hs code description origin country port of discharge unit quantity value inr per unit inr nov 22 2016. Read spun yarn technology online by eric oxtoby books. Schema of the twistingandspinning mechanism of a ring spinning frame 4 the process of siro spun yarn formation is presented in figure 2 4. Mar 28, 2003 fundamentals of spun yarn technology presents complete coverage of yarn manufacture and technology and current research findings on the structure and properties of spun yarns. Crepe yarns used for plain and crepe weave fabrics have high twist. A composite textured yarn contains a component yarn a and a component yarn b each false twisted and crimped. Most spun yarns used for woven fabrics have average twist. Sock yarns are are wonderfully versatile and can be used for knitting many other types of project.
In a similar manner to spun yarns, commercial cf yarns may be classified as natural or manufactured yarns i. Lawrence, fundamentals of spun yarn technology, c rc press wood head publication, edition. Advances in yarn spinning technology woodhead publishing series. Spinning is the twisting together of drawn out strands of fibers to form yarn. Standard practice for designation of yarn construction1.
Why sock yarn is worthwhile using the knitting squirrel. Ym2011 yarn a textile yarn is an assembly of substantial length. Schema of the twistingandspinning mechanism of a ring spinning frame 4 the process of siro spun yarn formation is presented in. Fundamentals of spun yarn technology 1st edition carl. Twist efficiency and pretension of filament are the influencing factors in core spinning. To a point, the fineness and strength increase with an increase in twist, but excessive twist causes yarn strength to decrease. Mukerjee states that there has been a rapid decline of the handwoven cloth industry on. The yarn technol ogist has to understand the importance of the various fiber. Import data and price of polyester spun yarn zauba. Basically, a textile yarn is made from short fibers like cotton, polyester, rayon, etc spun together into a continuous yarn.
Written by a wellknown and respected authority on textile technology, it not only introduces the subject, but it provides students with an advanced understanding of the. Read on to find out why sock yarn is worthwhile using. This site is like a library, use search box in the widget to get ebook that you want. Eric oxtoby, spun yarn technology, butterworth publication, edition 1987, 2526. The core may also be an elastic yarn such as spandex source dictionary of fibers and textile technology. Ring spun yarn has retained its position as the system that produces the. A filament on the other hand is a continuous yarn produced directly by extruding synthetic filament from liquid polymer. Name and explain the three ways in which producers of manufactured fibers usually sell their products to fabric manufacturers. In addition, the amount of hand spun yarn in india decreased from 1884 to 1914. Standard practice for designation of yarn construction. Our high quality dynamic tfo spares ensure excellent yarn quality and evenness. Eric oxtoby, spun yarn technology, butterworths, 1987.
Find all the books, read about the author, and more. Statistical analyses and predicting the properties of. Making fibers into yarns making fibers into yarns yarns. Single fibers of component b have thick portions and thin portions successively alternating in the longitudinal direction.
Spun yarn technology kindle edition by oxtoby, eric. Chapters are devoted to topics on spun yarn technology such as yarn production, properties of yarn, opening and cleaning loose fibers, fiber blending, the process. Khare, elements of carding and drawing, sai book centre, bhandup, mumbai. Use features like bookmarks, note taking and highlighting while reading spun yarn technology. Jun 12, 2015 the extension of the core spun yarn tends to reduce at higher twist levels. This yarn is composed from two rovings twisted together. Fundamentals of spun yarn technology presents complete coverage of yarn manufacture and technology and current research findings on the structure and properties of spun yarns. Openend spinning, on the other hand, is a faster and more costeffective method for producing coarser yarns.
In general, ring spun yarns are stronger with a softer hand. The extension of the corespun yarn tends to reduce at higher twist levels. Yarn countsliver hank yarn count is the numerical expression of yarn, which defines its fineness or coarseness. Eric oxtoby, spun yarn technology, butterworth publication, edition 1987. Core spun yarn production by rotor spinning system nield and ali have developed a technique in rotorspinning machine to produce core spun yarns as shown in fig. Spun yarn technology isbn 9780408014649 pdf epub eric. Packages may be comprised of unsupported yarn, such as balls, or supported yarn, such as skeins, cakes, bobbins, cops, cones, pirns, spools, tubes or beams. You may be unsure where sock yarn fits into the yarn family. According to fiber length staple, continuous filament according to structure single, plied, cabled according to fiber type fiber material like metal, glass, cellulose according to twist zero twist. Read spun yarn technology online by eric oxtoby books free. Download it once and read it on your kindle device, pc, phones or tablets. Yarn texturing technology download ebook pdf, epub. Structural and physical properties of yarn made on the integrated composite spinning syst. Making fibers into yarnsyarns o short staple or long filament fibers formed into long continuous strandsspinning o the conversion of fibers into yarnshand spinning o carding process of straightening fibers before spinning by hand or machine carder pair of wooden paddles, bent wire hooks o combing additional step using a comb, aligns fibers usually longer length fibers o spindle.
In winding department where the final package of yarn is make. Chapters are devoted to topics on spun yarn technology such as yarn production, properties of yarn, opening and cleaning loose fibers, fiber blending, the process of carding, and roller drafting, doubling, and fiber control. Document 6 is from the perspective of an indian economist named radhakamal mukerjee in 1916. The component yarn b is shorter in yarn length or larger in shrinkage at least after heat treatment. Imports of polyester spun yarn in usa manufacturers of polyester spun yarn buyers of polyester spun yarn in usa. Delete and rename a file display all files with the extension. Apr 26, 2017 basically, a textile yarn is made from short fibers like cotton, polyester, rayon, etc spun together into a continuous yarn. It is used to produce the finer spun yarns as they cannot be spun on an openend spinning system.
Pdf yarn testing plays a crucial role in gauging product quality. Elastohydrodynamics 96 fundamentals and applications in lubrication and traction, proceedings of the 23rd leedslyon symposium on tribology held in the institute of tribology. Our professionals use latest technology to manufacture technologically advanced and dimensionally accurate spares for spun tfo i. A corespun yarn containing a metal wire manufactured by a modified vortex spinning system article pdf available in textile research journal october 2017 with 349 reads how we measure reads. Also offer package center assly for murata tfo, package center for dewon tfo, package center for tsudakoma tfo. The unique construction and coating make it a great economical choice for fine art reproduction, indoor displays, wall murals and other art decor applications. Eric oxtoby, spun yarn technology, butterworth publication, edition 198 7, 2526. In general, ring spun yarns are stronger with a softer hand and openend spun yarns are smoother on the outside. Eric oxtoby, spun yarn technology, butterworths, london. Mukerjee states that there has been a rapid decline of the handwoven cloth industry on account of the competition of machine manufactures. Fundamentals of spun yarn technology crc press book.
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