These kinds of systems are known as the vortex yarn spinning systems. At the outlets of the bores, this air vortex has a rotation speed of up to 1 000 000 rpm. Mar 19, 2018 murata vortex spinning mvs technology uses more than two air jets to create a 3dimensional air vortex and addresses some of the issues faced by earlier versions of air jet spinning systems. It is a special type of project work as it is an observing and analytical work. Basically, short fibers used for normal staple yarns, 2 inches 51mm or shorter, can be spun.
The airjet spinning methods have been developed since it is possible to eliminate the movable elements as the spindle and the traveler in ring spinning or the. A spinning machine in which a spinning member is disposed, the spinning member having a nozzle block 11 in which air injection holes are drilled, a hollow guide shaft 17, a fiber introduction hole 101 opened at a tip side of the hollow guide shaft 17, and a fiber guide member 106 that guides fibers to the tip of the hollow guide shaft 17, wherein, first, a separating projecting portion 105 is. The remaining air, still spinning, is forced back through the center of this outer vortex. Jul 03, 2010 the reason why the screen is used is because the experimenter actually rotates the mesh on a lazy susan or something. Introduction vortex spinning is a technology which uses an air vortex to spin out the yarn. J 26 automated air jet spinning machine advances in productivity j 26 air jet spinning machine longer and faster machine length of up to 200 spinning units up to 6 robots production speed of up to 500 mmin automatic piecing preparation app the advances of the j 26 air jet spinning machine concept aim to increase the productivity of the machine but at the same time reduce.
One of the most important developments in air jet spinning is vortex spinning, which is 20 times faster than ring spinning goswami et al. Because the mjs machine remains largely a cotton blend and 100% synthetic spinning technology, the focus of this technical bulletin is exclusive to the mvs technology. Rieter j 20 airjet spinning machine com4jet yarn formation. Vortex spinning machine from murata machinery, ltd. Dec 03, 2017 principle of yarn formation in murata vortex spinning 1. The yarn construction principle is the same regardless of the fiber used. The spinning screen forces the air that the flame sucks in to adopt a vortex shape. Air vortex cannons a unique hands on science night. In vortex spinning yarn structure plays the major role in determining the properties of the yarn. Ideally, the mechanically moved mass is reduced to a minimum. I msc tmtosajs 120 the crucial factor when increasing the spinning speed is the twist insertion.
Performance analysis of a vortex tube by using compressed air. Incorporateds research, affected the evolution of air jet spinning from the early murata jet spinners mjs to the recently developed murata vortex spinner mvs. The outer layer, composed of twisted fibers, presents helical form. Over time, murata established a niche market for these special yarns and claimed success for the technology. The vortex spinning system is the source of vortex yarn and has continually evolved since its explosive debut in 1997. The advantage of ring like structure, lower hairiness, reduced fabric. In this paper, the spinning process of air jet vortex spinning was described. The sample details of yarn is given in the table 2. Openendrotor spinning an overview sciencedirect topics. The result shows that air jet vortex spun yarn comprises two parts. The vortex spinning, which only muratec has successfully implemented, is creating a new wave in the world of fashion.
Air jet spinning yarn spinning textiles free 30day. It is very much important in this time because although ring spinning machine produces best quality yarn but some. Air jet spinning system which consists of a 3over3 highspeed roller drafting unit, the basic jet design is also shown. A plastic or glass cylinder would not allow sufficient air intake, and it would not impart any rotation to the motion of the air molecules. Request pdf vortex spinning system and vortex yarn structure studying the yarn formation with the swirling air concept arouse of interest of the researchers for a long time because it appears. Ep1518949a2 air vortex spinning machine with special fibre. The team used smoke to visualize the flow of air around spinning seeds, and confirmed that real seeds make a leading edge vortex which is similar. Since there is a hole for the air to escape, the air is able to leave the cannon, but it is moving fast and that air mixes with the still air outside the cannon. The technological innovations of the j 26 enable the softness of knitted fabric to be.
Vortex yarn guide book website the vortex website continually provides all of the latest vortex information, as well as information on. The present research focuses on identifying those structural differences which can be used to explain the properties of these newer yarns. Vortex spinning system and vortex yarn structure request pdf. Producing functional and fashionable yarn with excellent value this is our concept for the vortex spinning. Fiber configuration of air jet vortex spinning yarns. The fully automated, doublesided air jet spinning machine j 26 ensures very economical production.
According to the adjustment of the bypass, the amount of spinning air entering the trash chute can be reduced. What kinds of fibers can be spun by a vortex spinning machine. Spinning is the most important and the initial step in fabric manufacturing. Vortices form in stirred fluids, and may be observed in smoke rings, whirlpools in the wake of a boat, and the winds surrounding a tropical cyclone, tornado or dust devil vortices are a major component of turbulent flow. Vortex spinning an extension of air jet spinning in which 100% cotton fibres can be spun how. The unique yarn construction gives vortex yarn the following advantages. The machine allows energy savings of up to 15% thanks to the individualdrive concept, as well as space savings of up to 50%. The automatic yarn piecer for continuous spinning of vortex yarn and the name spread throughout the world in the 1st generation.
Using an ordinary supply of compressed air as a power source, vortex tubes create two streams of air, one hot and one cold, with no moving parts. In mvs spinning, a finisher sliver fibers is supplied directly to the drafting device. The other fiber end forms the outer yarn layer in a true twist arrangement. Results indicated that vortex yarns have tenacity advantages over air jet yarns, particularly at high cotton contents. A sliver is fed into a drafting system that feeds the yarn into a vortex created by highspeed air jets, to impart false twist. Spinning is the process of producing yarn from fiber by twisting. The air vortex spinning machine is used to produce 30s,34s n e yarn, and ring spinning machine is used to produce 30s, 40s and 60s n e yarn. The major goals of spinning is to produce the quality yarn from raw material, then remove the process faults followed by winding the short length bobbins on cones. Model 3202 vortex tube 2 scfm exairs vortex tubes offer a low cost, reliable, maintenance free solution to a variety of industrial spot cooling problems. Yarn spinning is the process of manufacturing yarn from different types of fibres into a continuous length from one or more type of fibers. Vortex spinning process principle of vortex spinning. Exairs vortex tubes offer a low cost, reliable, maintenance free solution to a variety of industrial spot cooling problems. The latest development in air jet spinning technology is the murata vortex spinner. The air jet spinning methods have been developed since it is possible to eliminate the movable elements as the spindle and the traveler in ring.
Air jet spinning system modern yarn production textile. The benefit of vortex yarn in processing and usage dr. In fluid dynamics, a vortex plural vorticesvortexes is a region in a fluid in which the flow revolves around an axis line, which may be straight or curved. These are the main three spinning techniques to produce yarn from fiber in the spinning mills. Subsequently, the physical properties of vortex and air jet yarns produced from different polyester cotton blends were compared. However, in vortex spinning, the strength of the compressed air vortex and the spinning speed are used for adjustment. Mar 20, 2018 yarn spinning is the process of manufacturing yarn from different types of fibres into a continuous length from one or more type of fibers. In the vortex system, drafted fibers are introduced into a spindle orifice by an air vortex. Properties of vortex yarn were evaluated in many works, for example, in the work 4 and 3, where authors have compared vortex yarn mvs and air jet yarn vortex j mjs using various blend ratio. The compressed air which is supplied to the vortex tube and passes through nozzles that are tangent to an internal counter bore. Study on the principle of yarn formation of murata vortex spinning. The title of our project is comparative study on ring, rotor and airjet spun yarn. Vortex spinning machine textile machinery muratec,murata.
I msc tmtosajs 28 there are two methods of air jet spinning. Mjs, two air jet nozzles are used to twist and entangle. The drafted fibers are passed through the air jet nozzle and hollow spindle to make them into a yarn strand. Four expert speeches dealt specifically with the subject of air jet spinning. Air jet spinning first appeared for production use in the early 1980s. The reason why the screen is used is because the experimenter actually rotates the mesh on a lazy susan or something. A certain amount of air, required to release the fibers from the wire of the opening roller and for drafting the fiber flow in the fiber channel, is lead away by the bypass. Before the sliver from the drawframe is supplied to the air jet spinner, combing is often used, as it is imperative to get rid of any dust or trash that could obstruct the spinning jets. The structure of air jet vortex spun yarn was studied by means of blending tracer fibers in spinning. The air vortex generated in this jet, with an angular velocity of more than 2 million rpm, twists the strand as it passes through so that the strand rotates along a screwthread path in the jet, achieving rotation speeds of about 250 000 rpm.
At up to 1,000,000 rpm, this air stream revolves toward the hot end where some escapes through the control valve. Studying the yarn formation with the swirling air concept arouse of interest of the researchers for a long time because it appears to be easy to understand as a spinning principle. Oct 09, 2017 toyota opening of gear box of air jet weaving loom in less than 5 mins textile magazine duration. The spinning air is then forced to change direction as it passes through the impinger a vortex is created which, due to the design of the separator module, narrows and intensifies as it reaches the lower part of the separator module bulk liquid is removed from the air stream due to. The vortex spinning system is the source of vortex. Vortices form in stirred fluids, and may be observed in smoke rings, whirlpools in the wake of a boat, and the winds surrounding a tropical cyclone, tornado or dust devil. In addition to higher yarn speed, wear of machine components owing to friction is also expected.
The structure and properties of vortex and compact spun yarns. Principle of yarn formation in murata vortex spinning 1. Air vortex spinning free download as powerpoint presentation. Fibers formed by these air flows possess a unique structure, and this provides the yarn with a wide range of functionalities. Pneumatic methods have hence come into focus in recent years. In ring spinning, the number of twists is adjusted according to the application. Rotor spinning working principle linkedin slideshare. Apr 09, 2014 a certain amount of air, required to release the fibers from the wire of the opening roller and for drafting the fiber flow in the fiber channel, is lead away by the bypass. The vortex spun yarn has a twopart structure core and sheath. Vortex spinning is a technology which uses an air vortex to spin out the yarn. Vortex yarn show better resistance to pilling, abrasion and wash 2. The vortex plus air fryer oven uses rapid air circulation to cook food, giving your meals all the crispy rich flavor of deep frying with little or no oil. The benefit of vortex yarn in processing and usage. By increasing the number of edge fibres so that there are more wrapper fibres by extracting the short fibres main advantages.
In vortex spinning, one end of each fiber is anchored in the center of the yarn such that the center of the yarn is always without twist. Vortex spinning system and vortex yarn structure intechopen. In october 1997, murata revealed its development of the murata vortex spinner mvs, an air vortex spinning frame for cotton. This technique is also known as fasciated yarn spinning. Pdf vortex spinning can be viewed as a refinement of jet spinning, or a natural development in fasciated yarn technology. This spinning stream of air turns 90 and passes down the hot tube in the form of a spinning. The structure and properties of carded the authors 2012.
Page 6 as yarn happens to be the basis of all textile production, the problems sooner or later are inevitable for the entire textile producing industry. Introduced in 1997, murata vortex spinning mvs is gen erally considered to be a refinement of airjet spinning 1. Testing machine measures the mass of each centimeter of yarn and. Study on the characteristics of fabric made from air. As fibers are not mechanically twisted in vortex spinning, the number of twists cannot be mechanically set. Airjet spinning of cotton yarns cotton incorporated. There is higher air pressure on the outside of the ring and low air pressure on the inside, making the ring spin, keeping it.
The murata vortex spinning based on the air jet spinning technology used for a wider range of fiber length. Comparative study on the properties of vortex and ring spun yarn. Prior to the main investigation preliminary trials were conducted to asses the differences between the properties of vortex and airjet yarns produced from a variety. A revolutionary idea, spin yarn with the vortex flow of compressed air created vortex, a new concept in staple yarn. Feb 28, 2015 air jet spinning ppt, air jet spinning machine, air jet spinning wikipedia, air jet spinning definition, air jet spinning machine manufacturers, air jet spinning process pdf, air jet spinning yarn. These are the mass variation calculations along yarn length. Secret found to flight of helicopter seeds live science. Influence of spindle air pressure and its direction on the quality. The success of murata vortex spinning mvs system which is the newest system after all studies of airjet systems has been much acceptable.
Properties of vortex yarn were evaluated in many works, for example, in the work 4 and 3, where authors have compared vortex yarn mvs and air jet yarn vortex j mjs using various blend ratio of polyester next pes and cotton next co fibres. Vortex spinning can be viewed as a modification or refinement of jet spinning, and compact spinning is an enhancement of traditional ring spinning. A new concept of spin yarn with the vortex flow of compressed air is adopted in vortex yarn spinning. In vortex spinning, a drawn sliver is fed to the 4line drafting system. It has a high productivity rate, its yarn structure is similar to ring yarn, low hairiness and most important. Then the yarns were viewed with the optical microscope and sem etc.
A basic air jet spinning system is shown in figure 9. Vortex spinning process principle of vortex spinning system. Air jet spinning has grown in popularity because of its high productivity. Air jet spinning is the latest in a string of technological developments intended to increase production speed and flexibility. However, fibers with very high elongation or fibers. Among them ring, rotor and airjet spinning are mostly used. While entering and passing through the orifice, fibers are twisted by the. Air jet spinning is also known as vortex or fasciated yarn spinning. While entering and passing through the orifice, fibers are twisted by the swirling air. Thus changing the system from 2 dimensional to 3dimensional offers a significant increase in the number of wrapper fibers by creating more edge fibers. Murata vortex spinning technology is a modified form of jet spinning which has attracted a lot of attention because of its advantages over ring spinning, open end and air jet spinning. Air jet spinning system modern yarn production textile learner.
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