Apr 13, 2022 - ITO Karei is a gem in the ITO collection: 100% grade A Mongolian cashmere with a tweed effect of little colored neps. Contaminants in cotton fibers cause yam regularity defects that alter their structure. If the yarn appearance is poor, the fabric … ITO Karei is a gem in the ITO collection: 100% grade A Mongolian cashmere with a tweed effect of little colored neps. Neps in the raw material can be … The quality of hosiery yarn has to be considered with due weight-age to fluidity of knitted structures and their influence on knit fabrics quality. neps in card sli ver and yarn quality. The aim of the project was to find out the optimum flat speed in the context of yarn quality. This is especially true as the yarn count becomes finer (diameter decreases), since it becomes increasingly difficult for the seed coat neps to become hidden in the yarn structure. The purchaser should always keep in his mind that the effect of the yarn appearance is directly reflected on the fabric surface. ... (2.75 mm), respectively. Elrys et al. speeds leads to produce inferior sliver quality The Neps is a undesirable factor which reduce the quality of the yarn and ultimately reduces the cost of the final products, In order to reduce the … YARN FAULTS Effect on Quality ( Cntd…) Neps •Apart from the strong influence on the optical appearance of textile surface structures, neps from a certain size upwards also … 811 Chestnut. In this back drop the present research study was planned to … Machine types which are having varied needle strength hook sizes and dial and … But the fibers between 1.75 and 2 inches exhibit the highest correlation with the yarn CV%. Background Cotton fiber quality and seed composition play vital roles in the economics of cotton production systems and the cottonseed meal industry. The two ginning practices that have the most effect on quality are the regulation of fibre moisture during ginning and cleaning, and the degree of gin cleaning used. Mixed Neps: Fibers tangle around a foreign materials. The optimization yarn quality must be investigated in order to give a competitive worldwide yarn cost. ITO Karei is outstandingly soft, as mule spinning creates the highest quality yarns. The Neps are an undesirable factor which reduces the quality of the yarn and ultimately reduces the cost of the final products. 2. The results indicate that an alternative harvesting 1. Cotton Polyester blend Injection yarn with fluorescent neps in it. Increasing the recycled polyester content increases the tenacity, elongation at … The higher micronaire fiber is desired for purified cotton, since it’s easier to purify and forms less neps during processing. In addition, the larger the diameter of the fiber, the more it resists bending or collapse, leaving more space between the fibers for holding liquids. Yarn was prepared by using two spinning speeds, 6500 rpm and 9500 rpm. The neps in this form of measurement are of an absolute minimum size. Yarn imperfection of rotor spun yarn affects fabric quality significantly. ... gauge has been set in seven positions within the carding region and concluded that they slightly reduce the number of neps and short fibres in the carded slivers which further improve the yarns produced. For the rotor spun yarn, the negative effect on the yarn uniformity of the shorter fibers is limited. The fluorescent neps are in polyester. The harmfulness of neps. Also, the carding machines of the … ... Huang Kehua, Wei Qingli. Neps not only adversely affect the appearance of cotton yarns and fabric but are also usually associated with lower yarn strength, ends down in spinning and less-uniform yarn. places (+50%)/km + Neps (+200%)/km] (For ring yarn). Cause of neps and trash and controlling measures in carding procedure[J]. 2 Materials and Methods 2.1 Flat Tops of Variable Wire Point Density Flat tops of … Carded Yarn: Carded yarn is the worst quality type of yarn. The main emphasis of this project work is to find out the effect of fiber length on yarn quality for achieving the good yarn strength, and the trials have been conducted to … The better quality of the carded sliver is not only dependent on trash and neps content but also on the evenness in card web (weight per unit area), fiber parallelization and … 1. ITO Karei is outstandingly soft, as mule spinning creates the highest quality yarns. For the rotor spun yarn, the negative effect on the yarn uniformity of the shorter fibers is limited. Al Mamun et al, (2017) cleared that the best process of producing better quality yarn from very poor grade Results and Discussions Multiple linear regression Lattice apron makes a great impact on yarn qualities such as IPI values, thick places, thin places, Neps, Yarn hairiness, U% in respect In multiple linear correlation and regression, additional to mass, Yarn strength, CSP value, Tenacity and Elongation %. For instance – Grit. The effect of neps on yarn cost is twofold: (1) neps must be largely removed before yarns can be produced, (2) residual neps can be detrimental to the appearance and the value of yarn. … Their filaments and properties differ from each other. NEPS IN COTTON YARN 11 The combined effect of the three fiber properties accounts for a highlj significant amount (Ä= 0.858) of the varietal variation in neppmess (table 6). TABLE 6.— Results of covariance analpsis: Beta regression coefjîcients and multiple correlation coefficients with standard error of the estimate for neps in yarn as Chapter 5 provides … On the The present study has aimed at understanding the combined effect of cleaning intensity, cylinder speed and The … The number of readings for tenacity and evenness was 200 and 8 respectively. Many published papers have discussed the reuse of recovered fiber in spinning system. The effect of neps on yarn cost is twofold: (1) neps must be largely removed before yarns can be produced, (2) residual neps can be detrimental to the appearance and the value of yarn. From table 2, it was also observed that after 8 hours of heat setting imperfections/km in yarn found more or less equal to before heat setting yarn. Results and Discussion The effect of fibre length on yarn quality isobvious from the data given in Table l. Initially, there is an increase in yarn tenacity as the fibre length increases tracts from the general appearance of yarn and cloth products and lowers their quality, especially if they are to be dyed. ... thick places and neps in 1000 meters of yarn. The fibre physical properties can be influenced by non-cellulosic and metal contents present in it which ultimately may impact the quality and spinning performance of … The study revealed a relationship between the blend ratio and the NEPS 200% in the yarn per km. The main emphasis of this project work is to find out the effect of fiber length on yarn quality for achieving the … An Overview on the Spinning Triangle Based Modifications of Ring Frame to Reduce the Staple Yarn Hairiness By Dr. Hosne Ara Begum Comparing Quality Parameters of Yarn Produced by … The amount of nep in the yarn not only affects the appearance quality of the yarn and the grey cloth, but also directly affects the dyeing effect of … The actual reductions are determined by the fiber as well as the design, settings, and maintenance of the machines. The yarn is woolen spun on a mule spinning system. There is an inverse nature of NEPS (200%/km) with the increase in polyester proportion in the blend, which is shown in Figure 4. 40 Ne cotton yarns were produced with the slivers manufactured at different flat speeds such as 240, 260, 280, 300 and 320 mm/min. ... Effect of flat speed on neps content per gram and neps removal efficiency (NRE %) of card sliver. Imperfections/km in yarn increased after heat setting compared to before heat setting yarn due to moisture absorption which was found in table 2. Over the range of values examined here for short fiber content and neps, there were no significant changes in yarn quality values with the new technology. Combed yarns are superior in quality when compared to carded yarn as they are generally finer, stronger, smoother and more uniform due to the removal of short fibers and the … Combing is the process that removes the final proportion of short fibers, neps and others impurities such as vegetable matter and seed coat fragments in cotton that has already … A reliable analysis of these imperfections will provide some reference to the quality of the raw material used The standard sensitive levels are as follows : Thin place: -50% … places (+50%)/km + Neps (+200%)/km] (For ring yarn). The effect of ring traveller weight and spindle speed on yarn quality was investigated in this research. The effect of contamination on final yarn quality and various techniques of contamination removal during spinning processes have also been discussed in detail. Compared with conventional core yarn, significant decrease in thick, thin and neps is marked for the compact core yarn. ... (2.75 mm), respectively. The cotton neps would cosiderably mar the appearance of the fabric, particularly those dyed in contrast shades, in case of Polyester Cotton suiting. The sensitivity levelwas 3for thick places and neps and - 50% for thin places. Immature Neps: Generally … Ring-spun yarns of linear density of 23.6, 29.5 and 39.4 tex were produced from five blend proportions of recycled polyester and cotton (0:100, 33:67, 50:50, 67:33 and 100:0). Indeed, there was an increase of the Neps count and the ratio of short fibers (SFC). There are different types of yarn to be processed short staple and long staple like Combed, Carded, synthetic and Viscose. ... the number of passages has a significant effect on the quality of the reclaimed fibers. In unginned cotton, biological neps … Effect of Sliver Handling on Quality of Sliver and Yarn. This type of yarn does not contain any short fiber and neps. These results serve to … The yarn can be produced from Ne 10s to Ne 30s. But the fibers between 1.75 and 2 inches exhibit the highest correlation with the yarn CV%. The superior quality neps yarn available on the site are made from materials such as wool, acrylic, polyester and cotton which impart unique desirable characteristics to the blend. In order to study the effects of heat setting conditions on the properties of 100% cotton yarn, 30/1 Ne combed ring yarn cones were heat setting in a XORELLA CONTEXXOR … Nep removal efficiency of card, irregularity of sliver and yarn as well as imperfections (thick places, thin places and neps), yarn hairiness, yarn strength were found more satisfactory level at the card production rate of 60-120 meter/min. The effect of these alterations on yarn strength is discussed with particular focus on seed coat fragments (SCF), one of the primary cotton contaminants from the fiber to the … Process Neps: Commonly produced by faulty carding or up to spinning yarn. Improper selection will affect sliver C.V% and yarn quality. Yarn twists more than normal result in the formation of … The yarn is made in cotton and polyester blends as per the customer’s requirement. Combing is the process that removes the final proportion of short fibers, neps and others impurities such as vegetable matter and seed coat fragments in cotton that has already been carded. For retaining their maximum original parameters they require different types of sliver handling systems. The imperfections i.e., thick place (+50%), thin place (-30%), and neps (+200%) of elastic core yarns produced in conventional and compact spinning are exhibted in Figure 8(a), 8(b) and 8(c), respectively. The purchaser should always keep in his mind that the effect of the yarn appearance is directly reflected on the fabric surface. Figure 4:Effect of polyester/cotton blend ratio on NEPS 200%/Km. Ring spun yarn has retained its position as the system that produces the strongest, finest, softest and most lustrous yarn and fabric. The yarn is woolen spun on a mule spinning system. 6.5 According to the distribution of … The ginning process can significantly affect fibre length, uniformity, and the content of seedcoat fragments, trash, short fibres and neps. The fluorescent neps are in polyester. ITO Karei is outstandingly soft, as mule spinning creates the highest quality yarns. The neps no t only give a bad appearance to the yarn and cloth, but also affect the dyeing quality. The concentration of these materials largely depends upon cotton variety, growing area and atmospheric conditions. This study focuses on the impact of harvesting methods on waste, percent-age efficiency, and processing and yarn quality, which are important factors to the yarn spinner. Customers can do cotton portion dyeing to get the effect in the yarn. 3. The neps no t only give a bad appearance to the yarn and cloth, but also affect the dyeing quality. Present results show a nonsignificant effect of spacers … Feel […] This study investigates the effect of the blend ratio on recycled blended yarn quality characteristics. Thus, the recommended tension for the yarn plays a very important role and has a great effect on the yarn quality. Neps are best described as dense, tangled clumps of the short fibers of the fleece. The study revealed a relationship between the blend ratio and the NEPS 200% in the yarn per km. ... spinning machine versus a ring spinning machine with 40-year-old technology reveals highly significant and beneficial effects of the new technology on yarn quality. On the other hand yarn imperfection (neps, thick and thin places) which is another parameter considered as parameter of yarn quality. Damaged to machinery: Use of pre-cleaner at ginning, use of gravity trap, better housekeeping. If the yarn appearance is poor, the fabric appearance will also be poor. Jun 2, 2021 - ITO Karei is a gem in the ITO collection: 100% grade A Mongolian cashmere with a tweed effect of little colored neps. The draw frame machine is the last … Present results show a nonsignificant effect of spacers on yarn neps. The main object of this work is to produce better quality yarn. YARN EVENNESSYarns of different quality levels result in fabrics of distinctlydifferent quality levels, leading to problems in processing orvariations in final value (of the fabric / garment).These differences impact on prices and affect the costs andprofitability of both fabric & apparel … and imperfections of yarns caused from higher card speed resulted in the decrease in yarn strength. A good yarn should lack those neps. An evaluation of the effect of yarn count on hairiness shows that the hairiness values of the Ne 60 yarns are the lowest whereas Ne 30 yarns are the lowest. The woolen spinning process makes a warm and cozy yarn due to the The yarn is woolen spun on a mule spinning system. performed on 1/8th of the cops produced on 1000 m of yarn (first doffing of 4 cops per repetition) for a total of 2000 m. - Detailed analysis of OE yarn: the same method as for ring spun yarns … The yarn is made in cotton and polyester blends as per the customer’s requirement. The hairiness values of the yarns produced in the study are shown in Figure 4. neps. Over the range of values examined here for short fiber content and neps, there were no significant changes in yarn quality values with the new technology. Customers can do cotton portion dyeing to get the effect in the yarn. These products are made with the utmost care to ensure the end products are smooth, delicate and rigid enough to sew or knit into garments and other end-products. Very Poor quality yarn/cloth. Feel […] The removal of neps represents a … yarns desirable characteristics. The yarn can be produced from Ne 10s to Ne 30s. … Yarn Evenness and ImperfectionsBy : Ravikeerthi Rao; 2. Neps are associated with poor yarn and ultimately with poor fabric appearance and have an effect on yarn uniformity and dyeing quality. … No comber has needed during cared yarn manufacturing in the textile spinning sector. The effect of these alterations on yarn strength is discussed with particular focus on seed coat fragments (SCF), one of the primary cotton contaminants from the fiber to the finished product. The increase in yarn hairiness ranges from 13 … Even though the cards are feed with the relationship between fibre properties and yarn quality has been investigated. This research aimed to examine the effects of different irrigation levels and planting geometries on fiber quality and seed composition of cotton (Gossypium hirsutum L.). Normally, this type of yarn contains more neps and more short fiber. relationship between fibre properties and yarn quality has been investigated. neps), short term evenness (u%), and strength of yarn are influenced by the changes in bottom roller gauge setting, ... affect the quality of the yarn. Effect of waveform gauge setting on yarn quality in a cotton carding machine . investigated the effect of yarn structure and yarn count on the properties ... thick place (+50%), thin place (-30%), and neps (+200%) of elastic core yarns … Effect of polyester/cotton blend ratio on NEPS 200%/ km Figure 4: Effect of polyester/cotton blend ratio on NEPS 200%/Km. Yarn The crucial yarn properties … YARN EVENNESS Effect on Quality Fabric defects and rejections are critically influenced by irregularity of yarns. Periodic and quasi periodic irregularities in yarn result in warp way streaks and weft bars in woven fabrics and a non-periodical yarn irregularity gives cloudiness in the woven or knitted fabric,... In this study, the effect of rotor speed from 35,000 to 45,000 rpm and rotor diameter from 43 to 66 mm on 100% cotton yarn … The woolen spinning process makes a warm and cozy yarn due to the Improper feed roller loading and the setting between feed roller and feed plate will affect the quality, especially C.V% and neps. In this study, the effect of rotor speed from 35,000 to 45,000 rpm and rotor diameter from 43 to 66 mm on 100% cotton yarn properties in terms of thick, thin places and neps were systematically … To spin high quality … Cotton Polyester blend Injection yarn with fluorescent neps in it. Neps not only adversely affect the appearance of cotton yarns and fabric but are also usually associated with lower yarn strength, ends down in spinning and less-uniform yarn. Cotton Textile Technology, 2005, 33(6): 39-41. reduced yarn and fabric quality. This paper presents the results of an experimental study showing that, in certain cases, the presence of … Differential dye pick-up. In contrast to the loose arrangement of a worsted nep, a cotton nep generally has a tight formation. In most cases, fibrous neps are found to contain at least five fibres, with the average number being 16 or more. (van der Sluijs, 1999). For example, yarn quality at each spinning position is monitored by “yarn clearers,” such as the Uster® Quantum Clearer [20]. Selection of suitable yarn count should be based on: Machine gauge, Yarn Tex = {100/G}2. Imperfections/km in yarn increased after heat setting compared to before heat setting yarn due to moisture absorption … under commercial yarn counts and twist factors, in order to reduce the cost of production and to be economical for the popular fabrics. Cotton Textile Technology, 1999, 27(11): 35-37. Effect of polyester/cotton blend ratio on NEPS 200%/ km. Eccentric cylinder and doffer will affect the U% and will affect C.V.% also. Following variables were selected to study their effects on yarn quality parameters. It is of practical significance to use the DR% value (±20%, 0.01m) to evaluate the influence of the yarn on the surface of the knitted fabric. Neps may also interfere with economical spinning and may possibly … A good yarn should lack those neps. Biological neps are neps that contain foreign material, whether the material is seed coat fragments, leaf, or stem material (Figure 1) (Hebert, 1988). … The neppy yarns give raise to problems like breaking of needles in sewing and … When yarn becomes thinner, fibres join the structure better and less prone to go out from the yarn axis. Three different travellers were then used at each of the two spinning speeds to produce 42Tex yarn. Some people don’t worry about neps and allow them to form to add texture to their yarn, but … Before mounting , the eccentricity of cylinder and doffer should be checked. The important effect of carding from yarn quality point of view[J]. The fibre physical properties can be influenced by non-cellulosic and metal contents present in it which ultimately may impact the quality and spinning performance of resultant yarn. The neppy yarns give raise to problems like breaking of needles in sewing and knitting operations. For number of thick places, the rate of increase varies from 6% to 24% and for the number of neps it is from13 to 29%. trying to monitor neps. Following variables were selected to study their effects on yarn quality parameters. Moreover, the yarn is imported on a paper cone, so in order to make it coloured the paper cone must be replaced by a plastic cone. 1. Snarling is a common problem in the yarn manufacturing process, such as winding, warping, weaving, and knitting. The model was reported to be effective in predicting the effect of yarn thickness on fabric quality (Seyam and El-Shiekh ... 0.68, 0.65 and 0.68 for neps, thick and thin places, respectively. 2. Moreover, the yarn is imported on a paper cone, so in order to make it coloured the paper cone must be replaced by a plastic cone. 1.the nep. We conducted a 2-year study in 2018 … Combed Yarn: Combed yarn is one of the superior qualities of yarn. Because the neps and impurities in the raw strip directly affect the yarn nodules and fabric defects, the movement of the fibers during the drafting process in the parallel, coarse and fine … There is an inverse nature of NEPS (200%/km) with the increase in polyester proportion in the blend, which is shown in Figure 4. The experimental results show that the yarn quality parameters such as Um%, CVm%, thick places, thin places, neps, Imperfection Index and hairiness of 100% cotton are higher than … • To evaluate the impact of different combing seg ments (half laps) in comber on smaller size neps in comber sli ver and yarn quality. Little research has been conducted on the impact of UNR cot-ton in the textile plant.