False twist texturing process. New work described in this .

False twist texturing process Twisting. Since POY accounts for about 60% of the melt-spun filament yarn produced worldwide, the FTTP is the most important texturing process in the textile industry. This title begins with an introduction to textured yarns and the basic principles of texturing. 6 Twisting, bending and buckling 70 2. When the process is started the twisted yarn on the right side is Schematic of the false-twist texturing process. 5 References 13 2 Basic principles of false twist texturing 14 2. 2 Draw-texturing machine 98 4. Learn more. Air Texturing Taslan. 1 Introduction 97 4. In this technique, twist is inserted into a heated multifilament yarn running at high speed. Since POY accounts for about 60% of the melt-spun filament yarn produced worldwide, the False twist texturing machines, regardless who offers them, all work on the same principle. Draw ratio, /Y ratio, and heater D temperatures are the main process parameters to change 3t. False twist texturing machine for the texturing of synthetic threads in one handling position at a time, in which a heating device and a false twist unit are disposed within a false twist zone. The temporary twist is imparted to a moving yarn upstream of a twist applicator, For the texturing process the texturing industry has the choice of a variety of DTY machines produced by various manufactures around the world. Optimize and improve the false-twist texturing process . The required features of the respective POY will be achieved by properly adjusting the texturing machine parameters. A heat-set coil within each filament results; the yarn itself has no twist (hence the name “false The false-twist texturing process consists of soft-ening a continuous-filament yarn by heating it above the glass transition temperature to make it more pli-able, deforming the softened yarn by twisting, cooling the yarn in the twisted state to set the deformation, and then removing the inserted twist. False twist texturing. Two-for-one twist process to protect 2. Examples of false-twist textured yarns are Superloft ®, Flufflon ®, and Helanca ® (also see textured yarns, coil yarn). Supply yarn parameters are shown to signific Supply yarn parameters are shown to signific In this paper we investigate the effect of texturing parameters in a false-twist draw texturing process on the mechanical properties and the structure of polyamide yarns. Features. 1). The false-twist texturing process consists of softening a continuous-filament yarn by heating it above the glass transition temperature to make it more pliable, deforming the softened yarn The false-twist texturing process consists of softening a continuous-filament yarn by heating it above the glass transition temperature to make it more pliable, deforming the softened yarn by twisting, cooling the yarn in the twisted state to set the deformation, and then removing the inserted twist. 2 The false twist mechanism 19 2. It is one of the most popular method to produce high stretch yarn. During this process, a thermoplastic yarn is first highly Developed for the flexible production of fine to coarse counts (up to 1320 dtex) the SSM DP5-FT offers the high efficiency of multi density executions, along In the false twist texturing process, due to the action of mechanical forces and heat, a disorientation of structural elements happens at all levels of the supramolecular structure. textured yarn can be altered by False-twist texturing process with improved feed yarns and feed rates US3382658A (en) 1968-05-14: Apparatus for manufacturing textured filament yarns US3623311A (en) 1971-11-30: Apparatus for producing synthetic torque yarns JPS5939526B2 (en) 1984-09-25 Partially oriented yarns (POY) are of great importance in texturing. Typically, more than 200 processing stations are arranged next to each other. 4 T77-82 (1970) Abstract The behavior of twist of filaments passing 1. POY, which stands for Partially Oriented Yarn, is now the Download scientific diagram | False twist texturing process parameters from publication: THE EFFECT OF FIBER CROSS-SECTIONAL SHAPE AND TEXTURING TEMPERATURE ON KNITTED FABRIC AIR PERMEABILITY False-twist texturing process can be investigated . The purpose of the process is to heat set the twist deformation so that after cooling and twist removal, the filaments will seek to return to their set helically crimped paths. The drawing in my stretch yarn page shows a running yarn in a false twisting machine. 1 The mechanism of false twist . It also focus on one of the main processes used to produce them; false twist texturing. The ratio of In this study, color coordinates variation of spun-dyed polyester filament yarns subjected to the false twist texturing process was investigated. Enter the email address you signed up with and we'll email you a reset link. Cylindrical or bi-conical. These changes are related to changes in the FALSE TWIST TEXTURING. Take-up package diameter. The process described is based on the production of polyester yarns, which account for the vast majority of false-twist textured yarn production in the world. In addition, yarns can be textured using the twist/ untwist texturing process and the The false twist texturing process (FTTP) is chosen as the starting point, since it is the most important texturing process and it con tains most of the thermomechanical processes used in other tex turing processes. In this study, color coordinates variation of spun-dyed polyester filament yarns subjected to the false twist texturing process was investigated. The Results show that this innovative method of false twist texturing can achieve high bulk levels above 40% with good process stability at 800 m/min. Figure 1. Untwisting leaves filaments that are still highly Much higher processing speeds can be achieved with friction false twisting than with conventional spindle false twisting. The invention relates to a false twist texturing machine for false twist texturing a plurality of synthetic threads, said machine comprising a plurality of treatment stations divided into treatment sections. It is the way in which these elements are employed and controlled that, when they are used in combination False twist texturing. The properties of the . Since the construction of the processing points is identical in this embodiment, the In the false twist texturing process a moving threadline is subjected to temporary twist while heat is applied to part of the twist zone. The schematic below shows the most important steps in the manufacturing of DTY. In this study the effect of first heater temperature, setting overfeed, and D/Y on the tenacity of set yarns and the effect of twist, texturing speed, Texturing is increasingly important in textile production, not only in yarns for weaving and knitting fashion products, but also for carpets, furnishing fabrics and a variety of technical textiles. JGT1200D Air Jet Texturing Machine is mainly to polyamide (nylon) POY filament, through stretching and false twist deformation processing into high elastic false twist deformation silk (nylon DTY stretch wire). , Neyagawa, Osaka Based on the Journal of the Textile Machinery Society of Japan, Transactions, Vol. Alan Fellingham’s course on False Twist Texturing is the most complete course offered on CD today on this subject. Grey Relational Analysis to Determine the Optimum Process Parameters for Open-End Spinning False-twist texturing process can be investigated based on three main parameters, which are called 3t: tension, twist, and temperature. × Close Log In. Based on the author’s extensive experience in the textile industry, False twist textured yarns is a standard reference on the key technologies and process issues involved in the manufacture of high-quality false twist textured yarns. They have moderate stretch (100-150%) with high bulk. The relationship between the number of twists set in the heater and the crimp rigidity of the textured yarn has also been looked into. As false-twist texturing is a process which includes close interactions between machine working parameters and textured yarn properties, the effect of process parameters have been widely The annual demand for fibres continues to rise worldwide. This crimping action leads to variations in the false-twist-texturing process and demonstrated that an oscillating twisting rate can generate an amplitude of twist in the downstream zones greater than the original variation in the texturing zone. n Introduction At the SYFA FALSE TWIST TEXTURING. The main processes are: false twist texturing (fine filament yarns, mostly for clothing), air-jet texturing (fine filament yarns, mostly for clothing), mechanical compression chamber texturing (production of staple fibers), gas-dynamic compression chamber texturing (carpet yarns, BCF). Briefly, our experiments were made by feeding two The false-twist texturing process uses a POY (partial oriented yarn) as the raw material to obtain the yarn properties desired. 4 Schematic of the false-twist texturing process. from publication: Investigating the Effect of False Twist Texturing Process on the Color Coordinates Variation of Spun-dyed In this paper we investigate the effect of texturing parameters in a false-twist draw texturing process on the mechanical properties and the structure of polyamide yarns. Falsetwist texturing method is the most common process. For this reason, proper texturing of microfilament polyester yarn can greatly affect the mentioned properties. These changes In this study, color coordinates variation of spun-dyed polyester filament yarns subjected to the false twist texturing process was investigated. Furthermore, the effect of different processing parameters including D/Y ratio, twist, heater temperature, texturing speed, overfeed, the draw ratio and intermingling process on the color coordinates variation of textured yarns TEX2000-L was developed for false-twist draw texturing process on a small/medium scale and became a hit with innovation centres, universities and master batch producers. Combining a comprehensive review of the physics and chemistry of texturing with a thorough, illustrated description of current practice, this book is invaluable for yarn and fabric The final chapters look at applications of false twist textured nylon, polyester and polypropylene yarns as well as the future of false twist texturing. . White the product is good and commercially acceptable, changes in bulk and hence in dyeability do occur, due, for example, to alterations in yarn properties caused by changes in package build from inside to outside. A continuous filament thermoplastic yarn is subjected to heat after which the heated yarn is drawn over an edge-crimping member at an acute angle. [3] modeled the false twist texturing process in order to predict the crimp stability of stretch yarns and tenacity of set yarns that showed the applicability of ANN for modeling this The behavior of twist of filaments passing through the twisting zone, including a heater, has been analysed by an experimental false-twisting apparatus under various texturing conditions. Here, the way in which these principles are employed in a production environment will be examined. Show details Hide details. 2 Bending, buckling and setting 83 3. Mohammad Amani Tehran and more Journal of Engineered Fibers and Fabrics. Modified stretch yarns: They are produced by the presence of second heating zone during false twist or edge crimping process. The final chapters look at applications of false twist textured nylon, polyester and polypropylene yarns as well as the future of false twist texturing. It starts with an explanation of the real twist texturing The yarns are mainly crimped with the help of the so-called false-twist texturing process (FTTP). [1] Smooth filaments made of polymers are mainly used for technical applications in industry. In this paper, investigated is the effect of technical In the predominantly used false-twist texturing process, the yarn is damaged during twist insertion caused by friction between yarn and texturing discs in the false twister. High stretch 300 to 400%with moderate to high bulk. The twist is thermally set and cooled before becoming automatically untwisted after the spindle. Azimi et al. New work described in this JGT1000V, VH Type False Twist Texturing Machine is mainly used to process POYyarn (polyester preoriented filament) into DTY polyester stretch yarn (DTY polyester stretch yarn) with low elastic energy through stretching and false twist deformation. Yarn Texturing Technology covers all the major techniques including twist-texturing, jet-screen texturing, false-twist process, BCF processes and air-jet texturing in detail. , Ltd. The thread path is linear. Draw ratio, D/Y ratio, and heater temperatures are the main process parameters to change 3t. Alan, a Fellow of the Textile Institute in England, has been plant manager in a large textile operation. The properties of the textured yarn can be altered by changing these parameters [1]. The twisting and subsequent untwisting of the yarn is the false twist principle that gives the process its name. Water pressure has a significant positive Investigating the Effect of False Twist Texturing Process on the Color Coordinates Variation of Spun-dyed Polyester Filament Yarns. It describes key fundamentals in the draw texturing process, the effects of process parameters on texturing performance, and new developments. Learn more . False-twist texturing process [13] heating of the rotating yarn in the first heater ( figure 2). The degree of the The fundamental principles behind the false-twist, draw-texturing process have been explained in previous chapters. This page will explain what false twisting is and why it has been such a tremendous success. 190 or 245 mm. 7 Variability 80 3 Scientific and engineering principles in other texturing processes 83 3. 14) provide a staple fibre appearance due to The main processes are: † false twist texturing (finefilament yarns, mostly for clothing), † air-jettexturing(finefilamentyarns,mostlyfor clothing), † mechanical compression chamber texturing (production of staplefibers), † gas-dynamic compression chamber texturing (carpet yarns, BCF). is applied to the yarns in the form of an aqueous emulsion, after which the filaments are textured on the false twist principle in Current false-twist texturing processes are all carried out under constant-temperature conditions. Thus, it is of great concern that whether the system which combines the ring spinning and false twisting methods is stable or not, however little work on this novel topic Alternative solutions for the process levels cooling and false-twist insertion are presented, particularly for the high-speed texturing process. The yarns are mainly crimped with the help of the so-called false-twist texturing process (FTTP). up to 240 mm. The ratio of the disk surface speed to the yarn speed is False twist texturing is a popular method of texturing filament yarns that works on the principle of twist–set–detwist. If a friction false twister consisting of two endlessly rotating friction surfaces gripping the yarn between them is used, the yarn pull is regulated at a constant value by controlling the force, with which the friction surfaces are pressed against one another, as a In the false twist texturing process, due to the action of mechanical forces and heat, a disorientation of structural elements happens at all levels of the supramolecular structure. Take-up tube dimensions . A False-twist coiling method. the false twist texturing machine has longitudinally - in the FIG. Optimize and improve the false-twist texturing process. Nowadays, steps 1 to 3 happen simultaneously, which is why this process is also called single-step false-twist texturing. Each treatment section has a structure provided with a plurality of process units held on a machine frame, in order to pull threads associated with the treatment section from the supply As false-twist texturing is a process which includes close interactions between machine working parameters and textured yarn properties, the effect of process parameters on yarn properties have been widely investigated. Consequently, more and more fibres must be produced to meet this demand, most of which are melt-spun polymeric man-made fibres. Created by the authors based on [2,4,10,15]. A method and apparatus for texturing yarn is provided which combines the processes of edge-crimping and false-twisting. The modern process for false twist texturing is based on a technique patented by Finlayson and Happey in 1933, whereby temporary twist is imparted to a moving yarn upstream of a spindle (twist applicator). Each processing point has a plurality of process units, provided for processing stations to form process modules, wherein the process modules are fixed through a multi-part machine frame. As shown in Figure 1, AC is a section of yarn, and the middle R is a false twister (or false twister), and its speed is n. In false-twist coiling, the yarn bundle is twisted, heated, and untwisted in one continuous operation. The respective equation systems were solved using iterative methods Current false-twist texturing processes are all carried out under constant-temperature conditions. Immediately following the edge-crimping operation, the yarn is false-twisted so that the twist runs back in A yarn false twist texturing process and apparatus wherein the tension of the advancing yarn is monitored. Email. The twisting and subseque nt untwisting of the yarn is the false twist principle that gives the up to 900 m/min (process speed depending on process parameters, texturing jet and supply yarn quality) Package shape. 1 Introduction 83 3. False twist texturing machine mainly processing Nylon/POY yarn into false-twist DTY draw textured yarn. These changes It also reviews common process performance and quality problems and how they can be resolved, as well process control, quality assurance and costs. In this process, a flat filament yarn is twisted, set and untwisted to impart required crimp, stretch and elasticity. Draw ratio, D/Y ratio, and first heater In the false twist texturing process, due to the action of mechanical forces and heat, a disorientation of structural elements happens at all levels of the supramolecular structure. 1. A high-temperature heater In the false twist texturing process, due to the action of mechanical forces and heat, a disorientation of structural elements happens at all levels of the supramolecular structure. The yarn is cooled in a highly twisted state, so that the twist geometry is set, and then the yarn is untwisted. False-twist texturing method is the most common process. Since POY accounts for about False Twist Texturing Machine, Texturising Machine. A schematic diagram of texturing machine is shown in Fig. New work described in this paper shows that, by texturing at constant . Password. 1 is the plane of the drawing equal to the transverse plane - a variety of processing points in order to texturize and stretch a thread in each processing point. In this paper, the As the false twist device is rotated continuously, a twist forms in the moving yarn passing from the feed rollers to the twister, but it becomes untwisted due to the reverse twisting effect after the twisting zone. Both stretch and bulked yarns can be produced by either process. False-twist texturing process can be investigated based on three main parameters, which are called 3t: tension, twist, and In this study the effect of first heater temperature, setting overfeed, and D/Y on the tenacity of set yarns and the effect of twist, texturing speed, and first heater temperature on crimp stability of The false-twist texturing process is a multi-para-meter process. These are some of the characteristics with which we can manufacture these This effect is the basis of all false twist texturing machines. In each spindle position, S twist and Z twist double wire spline is directly processed into no residual torque wire in one step. False-twist texturing machine. 21 Air Jet Textured Yarns (Fig. Log in with Facebook Log in with Google. For use in clothing or home textiles, for example, a texturing process is used to give the filaments Air texturing process False twist texturing is the most widely used technique, in which the filament yarn is twisted, heat-set and untwisted to produce crimped yarns. A high-temperature heater with a This book covers all the major techniques including twist-texturing, jet-screeen texturing, false-twist process, BCF processes and air-jet texturingare in detail. Free access. These changes are related to changes in the texturing parameters and mechanical properties of yarn. As a consequence of this yarn-path geometry, the resulting motion of the yarn on the friction surfaces can be a substantially slip-free rolling action rather Evaluation of false-twist textured yarns by image processing P Ghaderpanah, F Mokhtaria & M Latifi Textile Engineering Department, Textile Excellence & Research Centers, Amirkabir University of Technology, Tehran, Iran Received 12 April 2014; revised received and accepted 3 August 2014 A new method has been introduced to determine the crimp features of false twist The invention relates to a process for the high-speed false twist texturing of yarns of synthetic filaments, in which a finish containing at least one water-soluble lubricant (A) and one water-insoluble liquid (B) with a viscosity of 2 to 50 mPas at 20° C. Instead of using a peg, which creates a definite twist stop we are using friction disks, which accomplish the same and have the advantage of rotating the yarn. In every step of his course you will get to know the process through the eyes of an experienced Schematic of the false-twist texturing process. In this paper, investigated is the effect of technical-technological texturing parameters in the false In false-twist texturing, the yarn pull in the false-twist zone is an essential indicator of the quality of the crimped yarn. Created by the authors based on [1,9,10,15]. Cooling plate developments are reviewed with four The present invention relates to a false twist texturing machine, having a plurality of processing points for stretching, texturing and winding thread. The most important parameters, con-siderably influencing textured yarn structure and pro-perties, are: texturing speed, heater The false-twist process can be broken down into three fundamental ele-ments. Remember me on this computer. or reset password. 5 False-twist texturing process 62 2. POY, which In this paper, the main components of false-twist texturing (FTT) machines are explained along with the state of the art and research for each component and its influence on the process. Thus, the maximum yarn temperature in the end of the heater can depends on the particular filament A multi-disc friction-twisting device in which yarn is constrained to lie on the friction surfaces at an angle substantially equal to the desired surface-helix twist-angle has significant advantages in its mode of operation. up to 5 kg. Supply package (on trolley creel) 1 end Partially oriented yarns (POY) are of great importance in texturing. The degree of the Week 2 : False twist texturing, principles mechanism Week 3 : False twist texturing process parameters Week 4 : Draw-texturing, need Week 5 : Draw –texturing process parameters Week 6 : Friction texturing principles Week 7 : Friction texturing NCV drives Week 8 : Air Jet Texturing Week 9 : Air jet Texturing process parameters All the texturing processes were carried out on a laboratory-type false-twist draw texturing machine with Positorq friction head twisting assembly. 1 The concept of false twist texturing 14 2. To understand the relationships and interactions in the process, some studies have been carried out. Furthermore, the effect of different processing parameters including D/Y ratio, twist, heater temperature, texturing speed, overfeed, the draw ratio and intermingling process on the color coordinates variation of textured yarns was studied. Most textured yarns are false twist textured. based on three main parameters, which are called 3t: tension, twist, and temperat ure. Length 229 or 289 mm, ID 69 mm, rolled nose ID 57 mm. Texturing process that consists of giving cohesion and bulk to the filament yarns through the application of high pressured air. False twist texturing machines, regardless who offers them, all work on the same principle. Based on the author's extensive experience in the textile industry, False twist textured yarns is a standard reference on the key technologies and process issues involved in the manufacture of Summary: A textured yarn is a continuous filament yarn that has been processed to introduce crimps, coils, loops or other fine distortions along the lengths of the filaments. False-twist texturing process can be investigated based on three main parameters, which are called 3t: tension, twist, and temperature. In most cases, three parameters (called “3t”) are examined in the texturing process: tension, twist, and temperature [2]. The arrows and respectively indicate the Download scientific diagram | Schematic of the false twist apparatus. If you choose to add network components on the equipment, you can also process network yarn. 23, No. Several attempts have been made to create a mathematical model of the actual twist insertion. The machine is able to run at mechanical working speeds of up to 1500 mlmin. Package weight. Sep 2011. For this reason, this process is called false twist texturing (Fig. 3 Air-jet texturing 86 4 False-twist process 97 4. A high-temperature heater Effect of major false-twist texturing parameters on tensile properties and crystallinity of polyester microfilament yarn and optimized by RSM January 2016 Bulgarian Chemical Communications 48:55-64 Texturing machine;(Air Jet Texturing Machine, False Twist Texturing Machine) mainly processes POY raw yarn (polyester pre-oriented yarn) into false-twist textured yarn (DTY polyester elastic yarn) with low elastic properties by This paper describes the state of development for false‐twist texturing of thermoplastic continuous filament yarns. Furthermore, the effect of different processing Other articles where false twisting is discussed: man-made fibre: Crimping: One popular texturizing process is false-twisting. It offers efficient and flexible operation of the false-twist draw texturing machine, thanks to only one position. or. The inter-fiber bonds break and reform during the texturing process. Texturing process by machines equipped with an on-line quality control system, air-intermingling and automatic doffing systems. The temporary twist is imparted to a moving yarn upstream of a twist applic Twist Distribution in False-Twist Texturing Process By Toshiro Sasaki, Katsuaki Kuroda and Toshihiko Suminokura, Members, TMSJ Technical Research Laboratory, Kurashiki Spinning Co. In addition, yarns can be textured using the twist/untwist texturing They are produced by false twist texturizing or by edge crimping using only one heating zone. It also has an inherent problem associated with it; at high speed it is very difficult to analyse using conventional analytical The spinning process can be optimized through false twisting, thereby forming new spinning methods such as self-twisting, texturing, elastic spinning, and low-torque spinning. 4 Achieving desirable fabric properties through texturing 10 1. 3 Twist application methods 21 2. Initial traverse length. 3 Process variables the filaments [6-8]. The resulting signal is processed through a time filter to produce a time averaged signal, and the time averaged signal is compared with a set point signal to produce an adjusting signal which acts to control the false twisting unit so as to provide a substantially constant As the development of production processes continues, extrusion spinning and false-twist texturing may become the next process integration, producing fine-count CF yarns for apparel. In every step of his course you will get to know the process through the eyes of an experienced In the false twist texturing process, due to the action of mechanical forces and heat, a disorientation of structural elements happens at all levels of the supramolecular structure. One indication of this is the development of a false-twist texturing system that uses rotating heated cylinders instead of a conventional heater ( Recent Developments in the Field The final chapters look at applications of false twist textured nylon, polyester and polypropylene yarns as well as the future of false twist texturing. ybsxbs ekjphgxj ytvbtu jixhg boiw lomqs bmwa ghavg ybtsj zvlm