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Air-jet texturing of technical polyester yarns was performed in order to improve its adhesion to rubber. The air-jet texturing parameters were selected with great care to minimize the mechanical loss.
Get PriceKey words air-jet texturing, yarn wetting, inter- filament friction, loop formation and fixation, spin finish The air-jet texturing process produces spun-like yarns by this …
Get PriceThe properties of the supply yarn and the processing parameters together determine the final properties of air-jet-textured yarns. An investigation is reported on how variations in overfeed, air ...
Get Price2017-8-29 · nozzle, both air-jet and steam-jet textured yarns were manufactured. The influence of effect-yarn parameters on the steam-jet texturing performance has been studied. Furthermore, steam-jet texturing was compared with air-jet texturing in terms of the processing parameters and the textured yarn properties. The results show that
Get Price2020-4-16 · texturing jet was further improved by incorporating capillary effect to suck air with water into the texturing zone to improve turbulence in the jet. The results show that water can be used to manufacture spun-like textured yarns. Index Terms— Air-jet texturing, Water/air-jet texturing, spun-like textured yarn. I. INTRODUCTION
Get PriceThe results of an experimental investigation of the air-jet texturing process using residual spin finish, yarn-to-yarn static and kinetic friction, filament strength, filament diameter, and on ...
Get Price2017-3-10 · Processing Conditions of Texturing Trials and Yam Quality Assessment In all trials, the supply yarn was PET 176 66 and the processing conditions, which are typical of industrial air-jet texturing, included 8 bar (gauge) air supply pressure,·200 m/min yarn speed, 20% overfeed, 4% stabilizing draw ratio, and 1 liter hour water.
Get PriceThis paper systematically investigates the effect of a number of geometric parameters on the texturing performance of air-jet texturing nozzles.
Get Price2020-4-22 · For a given texturing nozzle and conditions, there is an optimum filament fineness and number of filaments that can be textured effectively. The air-jet texturing process produces yarns similar to spun yarns in terms of their appearance and physical characteristics. An air-jet textured yarn and a cotton yarn of approximately the
Get PriceDescription. 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. This book covers all the major techniques including twist-texturing, jet-screeen texturing, false-twist process, BCF processes and air ...
Get Price2015-6-8 · air jet texturing machine was modified to supply and control both compressed air and high pressure steam to the texturing nozzle. Effect of post textured heat setting on loop instability, shrinkage, strength, tenacity, elongation and linear density of the steam – jet textured yarn was studied and compared with air jet textured yarns.
Get Price2017-8-29 · Theoretical investigation on nozzle parameters and air –flow on air-jet texturing was carried out by Acar et al. (1986a, 1986e); Bilgin et al. (1996); Demir et al. (1987), and Versteeg et al. (1994), but the actual behaviour of the filament during texturing in
Get Price2020-4-22 · The air-jet texturing process spans three decades, and in that time it has seen many improvements in the process and many variations in nozzle design. The heart of the air-jet texturing process is the texturing nozzle. This may vary in design and details but remains unchanged in its underlying principles. Fig. 2 shows an
Get Price2019-7-26 · Air-jet texturing is one of the several processes used to convert synthetic filament yarns to textured yarns and is the most versatile of all known texturing methods. The air-jet texturing process is widely known for its ability to produce continuous filament yarns with spun yarn like appearance. The process converts flat
Get Price2014-7-2 · Loop density of textured yarns. Figure 3 shows that loop density of steam-jet textured yarns increases and air-jet textured yarn decreases when effect-yarn draw ratio is increased. The decrease of loop density in the case of air-jet textured yarns may be due to smaller loops. It suggests that the increase of effect-yarn draw ratio increases the level of texturing and hence make smaller loops.
Get Price2018-2-17 · This paper systematically investigates the effect of a number of geometric parameters on the texturing performance of air-jet texturing nozzles. In order to facilitate the research, an air-jet text...
Get Price2017-12-1 · The circle patterns with different diameters and depths were investigated in this study. The dimple distribution was divided into the following four matrixes: F (D)-[H]-
showed that air pressure in the texturing jet, when there were weft yarn samples produced, had no significant influence on the fabric tensile properties such as breaking force and elongation at break (see Fig. 1 and Fig. 2). The fabric breaking force difference because of air pressure in the yarn texturing jet is less than 5 % and difference of
Get Price2021-5-1 · Conclusions. Multiphase jet machining (MJM) is a recently developed surface texturing method that introduces water into dry abrasive air jet machining. To explore the effects of water added in MJM, we conducted a series of comparative experiments when water …
Get Price2008-1-22 · The High Altitude Airship (HAA) is an unmanned, lighter-than-air vehicle presently in an Advanced Concept Technology Demonstration (ACTD) phase of development. The ACTD prototype is being developed by the Lockheed-Martin Maritime Systems and Sensors division under the direction of the Missile Defense Agency.
Get Priceshowed that air pressure in the texturing jet, when there were weft yarn samples produced, had no significant influence on the fabric tensile properties such as breaking force and elongation at break (see Fig. 1 and Fig. 2). The fabric breaking force difference because of air pressure in the yarn texturing jet is less than 5 % and difference of
Get Price2004-4-1 · An Improved Understanding of Modern Techniques for Air Jet Texturing of Continuous Filament Yarns, In: The Proceedings of 4th International Symposium, pp. 131-164, Izamir, Turkey. Google Scholar 35.
Get Price2010-1-1 · Air-jet texturing provides a means of creating texture in such materials. Further, it is a useful means of producing a yarn structure near to that associated with staple yarns. This is an important concession to the tastes of the ultimate consumer. 63 Air-jet texturing was introduced by DuPont in the 1950s, and then was known as the Taslan ...
Get Price2015-4-20 · Purpose – The purpose of this paper is to investigate the use of steam in order to replace air in the production of spun-like textured yarns. Further, this paper analyse the effect of production speed on process and textured yarn properties. Design/methodology/approach – An existing air-jet texturing machine was modified to supply either air or steam to the texturing nozzle. Using standard ...
Get Price2021-5-1 · Conclusions. Multiphase jet machining (MJM) is a recently developed surface texturing method that introduces water into dry abrasive air jet machining. To explore the effects of water added in MJM, we conducted a series of comparative experiments when water …
Get PriceJournal of Manufacturing Technology Management, Volume 23 Issue 2, pp 157-177. Wickramasinghe G.L.D., Foster P.W. (2014). Investigation of the influence of effect-yarn draw and effect-yarn overfeed on texturing performance: comparison between air- jet and steam-jet …
Get Price2021-3-15 · The main tasks were to investigate the distribution of air-temperature and air quality of the impinging jet ventilation in a single office room using an experiment in a climate chamber and simulation with computational fluid dynamics, as well as to describe the impact of impinging jet ventilation on thermal comfort parameters in different ...
Get Price2020-9-18 · This paper deals with an experimental investigation of roughness influence on contact angle measurements and proposes a genetic algorithm to identify an empirical regression model to combine roughness and contact angles. A ns-pulsed laser was adopted to ablate different patterns on the surfaces of AISI 304 samples. During the tests, number of repetitions, hatch distance, laser scan speed and ...
Get Price2021-3-27 · layer. Although the jet itself is a single-phase problem (jet of water in a water pool), in the remainder of this paper the jet interacting with the free surface is called the two-phase problem and the jet interacting with the liquid–liquid and air interfaces is referred to as the three-phase problem. 1.2 Technical background and application
Get Priceincluding spinning, texturing, weaving and knitting in their yearly technical re-port. This report contains costs calculated for specific ring and open-end rotor spun yarn for the countries selected. The cost factors which affect the total cost of ring and open-end rotor yarn were investigated by Kuşçuoğlu [14]. The la-
Get Pricethe air-jet texturing effect on the technical polyesters. Overfeed levels are also kept low purposely as the mechanical performance of the technical yarns is crucial for end-uses. The air-jet texturing of the filament yarns were carried out on a SSM Stähle RM3-T machine, with the following parameters: 300 m/min texturing speed, Hemajet A357 ...
Get PriceJournal of Manufacturing Technology Management, Volume 23 Issue 2, pp 157-177. Wickramasinghe G.L.D., Foster P.W. (2014). Investigation of the influence of effect-yarn draw and effect-yarn overfeed on texturing performance: comparison between air- jet and steam-jet …
Get PriceThe flammability and air permeability of woven fabric are very important properties for upholstery furniture manufacturers. In this study the dependencies of air permeability and flammability on yarn air texturing parameters, such as structure of the yarn and air pressure in the texturing jet were investigated.
Get Price2019-10-1 · spun-like texturing: Effect of production speed on texturing performance, Journal of Clothing Science and Technology Vol. 27, Issue 2, pp.177-190. 11. Wickramasinghe, G.L.D., & Foster P.W., (2015). Effects of core-yarn overfeed on texturing performance: comparison between air-jet and steam-jet texturing, The Journal of The Textile Institute
Get PriceIn this investigation, new methods are introduced for the determination of air-jet textured yarn's structure, applying computer vision and image analyzing techniques.Since the size, density and distribution of loops are very important factors in air-jet textured yarns,they are determined measuring yarn diameter, hairiness and torque indexes and ...
Get Price2016-1-15 · The surface texture such as micro-dimples or micro-grooves on the surface of mechanical seals can help to improve the tribological and sealing properties. A technique of multi-phase micro-abrasive jet machining is proposed to fabricate micro-grooves on the surface of mechanical seals. This technique takes the advantages of the current micro-abrasive jet machining and can recycle the …
Get Price2016-10-30 · Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic.
Get Price2009-8-26 · Yoon, HG, Ahn, GJ, Chung, MK, & Kim, JK. 'Aerodynamic Investigation of Air Knife System to Find Out the Mechanism of the Check Mark in a Continuous Hot-Dip Galvanizing Process.' Proceedings of the ASME 2008 International Mechanical Engineering Congress and Exposition. Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C ...
Get Price2019-8-27 · climate change; air quality; health; extreme event; China; The effects of future climate change on public health are an active and growing area of research, including the direct impacts of more severe heat waves (1, 2) and decreased food security (3, 4) to less direct effects on the prevalence of infectious disease and air pollution ().In China, where more than 1 million people now die ...
Get Price2021-7-6 · NTSB continues search for 737-200F that crash landed off Hawaii’s coast. The US National Transportation Safety Board (NTSB) has said it will continue to search the ocean floor for the remains of the Boeing 737-200 freighter that crashed and sank off the coast of Hawaii over the weekend, an incident that saw two pilots miraculously saved from ...
Get Price2018-12-1 · The air-jet nozzle consists of different components. For the air suction channel, there are fibers inlet and outlet, and main and sub holes. Fig. 19 shows the structure of air jet nozzle profile. The structures of the nozzle, such as the diameters of the main and sub-holes, the number of sub-holes and angles of sub-holes (θ), have significant ...
Get Price2014-6-19 · From these, maskless electrochemical texturing was the cheapest and fastest, but the minimum size of the texture features was the largest. Ink-jet printing followed by etching is an alternative that may potentially provide a good combination of cost and resolution, but the texturing time depends on the surface area.
Get Price2021-7-16 · However, the air quality factor, i.e., PM2.5 particle generation, was less in the case of a textured tool with MQL conditions. Overall, it is worthy to mention that the combination of tool texturing and MQL cooling conditions has been considered as one of the potential combinations in the area of green machining.
Get PriceAir jet texturing of siro spun yarns . 10. P.K.Thombre. 1990. An investigation on the mechanical properties of industrial ropes . 11.Prachi Aggarwal. 1990. Structure property relationship air jet textured yarns . 12. K.Sarkar . 1991 . Influence of addition of spin finish on acrylic yarn quality. 13. D.Daspal . 1991
Get Price2021-6-10 · This article presents an experimental study of a recently developed process, namely, ultrasonic assisted jet electrochemical micro-drilling (UAJet-ECMD) using …
Get Price2020-4-10 · Experimental investigation and parametric optimization in abrasive jet machining on nickel 233 alloy using WASPAS and MOORA S. Rajendra Prasad1*, K. Ravindranath2 and M. L. S. Devakumar1 Abstract: This article correspond to a multi criterion decision making approach, compared with Multi-Objective Optimization on the Weighted Aggregated Sum
Get Price2019-11-8 · Jet-ECM, also known as electro jet drilling, electro jet machining, electrochemical jet machining is a non-traditional machining technique in which a free jet of electrolyte locally removes material from an electrically conductive workpiece via anodic dissolution. Although Jet-ECM is developed from and shares several similarities with
Get Price2018-3-5 · The analysis for 2-methylnaphthalene will not be required for VI samples collected during the investigation of kerosene, jet fuel, diesel fuel, fuel oil No. 2, and heavier petroleum products. The Department intends to update the Technical Requirements for Site Remediation to remove the requirement to analyze VI samples for 2-methylnaphthalene.
Get PricePhone: (023) 8059 4881 Email: [email protected] Professor Robert J K Wood FREng, CEng, FIMechE, FICorr, FIMMM, FHEA Professor of Surface Engineering and Tribology, Associate Dean of Research,Founder of the UK National Centre for Advanced …
Get Price2021-8-3 · Impacts of air pollutants from fire and non-fire emissions on the regional air quality in Southeast Asia. Atmospheric Chemistry and Physics, 18, 6141-6156. [link] Liu Z., Yim S.H.L., Wang C., Lau N.C. (2018). The impact of the aerosol direct radiative …
Get PriceAir-jet texturing of technical polyester yarns was performed in order to improve its adhesion to rubber. The air-jet texturing parameters were selected with great care to minimize the mechanical loss.
Get PriceKey words air-jet texturing, yarn wetting, inter- filament friction, loop formation and fixation, spin finish The air-jet texturing process produces spun-like yarns by this entrained water, usually adhered to the surface of the modifying the uniform …
Get PriceThe properties of the supply yarn and the processing parameters together determine the final properties of air-jet-textured yarns. An investigation is reported on how variations in overfeed, air ...
Get Price2015-6-8 · air jet texturing machine was modified to supply and control both compressed air and high pressure steam to the texturing nozzle. Effect of post textured heat setting on loop instability, shrinkage, strength, tenacity, elongation and linear density of the steam – jet textured yarn was studied and compared with air jet textured yarns.
Get PriceThe results of an experimental investigation of the air-jet texturing process using residual spin finish, yarn-to-yarn static and kinetic friction, filament strength, filament diameter, and on ...
Get Price2020-4-22 · single air inlet hole located far from the nozzle exit. A curved diverging exit profile is essential for successful texturing. The results of the tests to determine the effect of air inlet angle are inconclusive and require further investigation. The air-jet texturing process is widely known for its ability to produce spun-like synthetic ...
Get Price2020-4-22 · The air-jet texturing process spans three decades, and in that time it has seen many improvements in the process and many variations in nozzle design. The heart of the air-jet texturing process is the texturing nozzle. This may vary in design and details but remains unchanged in its underlying principles. Fig. 2 shows an
Get Price2017-8-29 · nozzle, both air-jet and steam-jet textured yarns were manufactured. The influence of effect-yarn parameters on the steam-jet texturing performance has been studied. Furthermore, steam-jet texturing was compared with air-jet texturing in terms of the processing parameters and the textured yarn properties. The results show that
Get Price2014-7-2 · Loop density of textured yarns. Figure 3 shows that loop density of steam-jet textured yarns increases and air-jet textured yarn decreases when effect-yarn draw ratio is increased. The decrease of loop density in the case of air-jet textured yarns may be due to smaller loops. It suggests that the increase of effect-yarn draw ratio increases the level of texturing and hence make smaller loops.
Get PriceThis lecture will. briefly describe the various texturing processes that use. fluid-jets and will then summarize the ongoing air-jet. texturing research undertaken by Dr Acar at Lough-. borough ...
Get Price2013-3-21 · Air-jet textured yarn Crease recovery or fahrics with air-jet tex tured we ft yarn s 346 IX4 194 266 11 7 266 422 230 287 352 284 130 236 52 393 Errect of process variahles on the properties or air-jet textured yarns using response surrace design Evaluation of physical hulk of air-jet tex tured yarns Air-jet texturing
Get Price2018-7-3 · Low emission combustion is critically influenced by fuel-air mixing quality. In the case of liquid fuels, atomization of the injected liquid is a vital component. Compared to standard injector nozzles, a spatially oscillating jet, as produced by a fluidic oscillator, has shown superior performance.
Get Price2018-7-9 · The texturing is a thermo mechanical process of fin-ishing a synthetic smooth filament by which its appear-ance and properties are modified producing a specific texture of the newly made yarns. The quality of the textured yarn is in direct depend-ence of the type and quality of the input POY filament,
Get Price2021-4-23 · Indian Institute of Technology Kharagpur, 721302, India Emails: 1 [email protected], [email protected] and 3 [email protected] *Corresponding author Abstract: In the current investigation the surfaces of a sintered Al2O3 and TiC ceramic composites are irradiated in air with a KrF Excimer laser.
Get Price2011-9-19 · National Institute of Standards and Technology (NIST) Federal Building and Fire Safety Investigation of the World Trade Center Disaster. Answers to Frequently Asked Questions (August 30, 2006) (8/6/2006, ARCHIVE, incorporated into 9/19/2011 update) (NIST NCSTAR throughout this document refers to one of the 43 volumes that comprise NIST…
Get Price2013-10-25 · Keywords: -sea sand, Vibrating chamber, Abrasive jet machine , abrasives, Nozzles, glass, I. INTRODUCTION Sand Abrasive compressed air is used for surface cutting, holing of surface on the brittle material like glass, this also used for surface cleaning and surface texturing etc. In AJM process fine particles of sea sand
Get Priceproperties on the properties of core-and-effect and normal air-jet textured yarns. Textile Research Journal. 2004; 74, 3: 259-264. 24. Demir A and Behery HM. Synthetic filament yarn: texturing technology. Prentice Hall, Upper Saddle River, USA, 1997; p. 128-134. 25. Foster P.W, Aggarwal RJ, Lu BI, Gunasekera USW and Cork CR. A new concept in
Get PriceLeveraging LDV techniques for the investigation of unsteady turbomachinery flows - Volume 123 Issue 1270 ... One common method of seed generation is the atomisation of a liquid aerosol using a pressurised air jet. ... large turbulence intensities, and small passages, among other aspects, impede the acquisition and quality of data. 3.1 ...
Get Price2019-3-17 · On the Lion Air flight, when the MCAS pushed the jet’s nose down, the captain pulled it back up, using thumb switches on the control column. Still operating under the false angle-of-attack ...
Get PriceYarn Texturising Technology: Air-jet Texturing and Yarns. Cambridge, England, Woodhead Publishing Limited (CRC Press) 7. Shaikh T. N., & Bhattacharya, S. S., (2011): Deriving an Empirical Formula to Determine the Optimum Level of False-Twist in Mechanically-Crimped Textured Polyester Yarn, Textile Research J., Vol. 81, 19, 1995-2005.
Get Price2020-9-16 · The use of discontinuous textures on cutting tools still needs further investigation. Textured cutting tools can be beneficial in both wet and dry cutting conditions. The optimization of patterns/grooves depends on cutting conditions and workpiece/tool material. Surface texturing can be successfully used combined with coatings and solid lubricants.
Get Price2021-4-23 · Indian Institute of Technology Kharagpur, 721302, India Emails: 1 [email protected], [email protected] and 3 [email protected] *Corresponding author Abstract: In the current investigation the surfaces of a sintered Al2O3 and TiC ceramic composites are irradiated in air with a KrF Excimer laser.
Get Price2019-3-29 · parameters applications of transducers in industrial processes and quality control. TT 506 Developments in Texturing 4(150 ) Different types of texturing – Twist texturing, Air-jet texturing, edge crimping stuffer box crimping, gear crimping, knit-de-knit etc.
Get Price2020-9-25 · POLYESTER YARN TEXTURING, CIRCULAR KNITTING AND DYEING OF KNITTED FABRIC - Project Report - Manufacturing Process - Cost - Investment Required. Report includes feasibility report, profitability analysis, raw materials, break even …
Get Price2015-4-28 · IntroductionThe need of building occupants for ventilation has been recognised many centuries ago, however since the early 1970s, ventilation systems for buildings and transport systems have considerably evolved. This was invigorated by researchers who demonstrated the requirements for buildings to provide comfort and good air quality indoors (e.g. Fanger, 1972, Fanger and Christensen, …
Get Price2010-9-20 · The use of jet grouting columns to increase the bearing capacity and reduce the settlements of foundations is dealt with, the aim being to formulate a complete design procedure where theoretical analyses and site observations are combined.
Get Price2017-9-21 · It’s a new spinning technology developed from air-jet spinning and improved in aspect of yarn property and flexibility of fiber materials [2]. High speed with short process, less hairiness, good resistance to pilling, better moisture absorption and release, and so on [3], are the prominent advantages of vortex spinning.
Get Price2021-1-25 · 3 minute read. Investigating the cause of Sriwijaya Air’s deadly and devastating Boeing 737-500 crash, Indonesia’s air accident investigation service is looking into the aircraft’s autothrottle system, which manages engine power. The plane was reported to have had issues with this function days before the fatal incident on January 9th.
Get Price2018-10-31 · Indonesia plane crash: Wreckage of Lion Air jet believed found. Armed forces chief says possible seabed location of the downed aircraft may have been found after 189 were killed.
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