Studies on tensile properties of eri/acrylic blended yarn

It is claimed by different Spinning machine manufacturers that yarn produced by Intimate blending technique by using automatic metering machines is more even throughout the length as well as in transverse direction as compared to Creel blending technique. This thesis has been undertaken to study the aspects of yarn formation processes by either blending techniques and to compare the quality and tensile properties of different counts made by either techniques. Yarn samples are spun at Ring Spinning Frame EMJ 168 with five different counts and twist levels of both techniques. By using UT4, yarn samples are investigated for U%, CV%, Hairiness, Thick &Thin places and Nep The tensile properties of yarn such as Breaking Force, Elongation at break and Tenacity are investigated on UTR4 for single yarn as well as skein. The yarn twist is measured on Twist Tornic code a semiautomated machine. The Solubility test method is used for evaluation of blend ratio of Polyester/Cotton. It is evaluated and observed that Intimate blended yarn gives overall better results. Keywords— Intimate blending, Uniblend (A - 80), Chute feed (A - 70), Fiber Fineness Tester, Yarn Strength and Elongation Tester ,Uster Tensorapid 4, Uster Mass and Hair diagram

Trends in textile engineering & fashion technology, 2019

Cotton is a cool, soft, comfortable and is the principal clothing fiber of the world. Cloths made of this fiber absorb and release perspiration quickly, thus allowing the cloth to "breath." The advantages of polyester over cotton fibers are its strength, brightness, easy-care, low price, consistency in quality and availability. But it has low moisture regain (0.4%) as compared to cotton (8%). There is no perfect fiber that contains all the qualities of cotton and polyester mentioned above. In this context, blending is the technique to combine fibers which emphasizes the good qualities and minimizes poor qualities of the fibers. In blends of polyester/cotton, the fibers provide crease recovery, dimensional stability, tensile strength, abrasion resistance, moisture absorption, drape ability, etc. Different blend ratios of P/C have been considered for experiment, i.e., 100% cotton, CVC (60% cotton, 40% polyester) and PC (50% cotton and 50% polyester). In this work, we studied the yarn characteristics with several P/C blend ratios of 30/s Ne. Here, the properties of blended ring spun yarns are compared with the same of 100% cotton yarn and the results are discussed in terms of the following quality parameters: Mass irregularity (CV% and U%), Thick, Thin & Naps (IPI: Imperfection Index), CSP, single yarn strength and Hairiness.

Australian Journal of Science and Technology, 2021

The blending of natural fibers with synthetics fibers has been tremendously increased to minimize the poor quality and the cost of the fiber around the world. A comparison on the characteristics of 100% cotton yarn, cotton-Tencel blended yarn with 80:20, 70:30, 50:50 ratios, and 100% Tencel yarn of 12 Ne ring yarn with varying percentages of Tencel was studied in this research. 100% cotton yarn has shown greater unevenness, CVm, thick places, thin places, neps, and imperfection index than cotton-Tencel blended yarn but in the matter of count strength product, 100% cotton fiber has shown low-grade result compare to blend yarn. Among the blended yarn, 50/50 yarn has shown the best quality. The quality of the cotton-Tencel blended yarn was enhanced while the Tencel fiber ratio percentage has risen. The reasons are directly ascribed to the characteristics of Tencel fiber such as its longer fiber length, higher length uniformity, no neps, and fewer strength characteristics. The research shows that the blending of Tencel fiber has significant effects on the blended yarn properties. Spinning mills can use this result for their production of blended ring-spun yarn.

Journal of Applied and Natural Science, 2019

In this study an attempt was made to utilize the oak tasar silk spinning waste through blending it with acrylic fibre and prepared yarn in mechanised spinning system. The oak tasar silk and acrylic blended yarn were prepared on ring spinning machine with five different blend ratios viz. 100:0, 60:40, 50:50, 40:60 and 0:100. The prepared yarns were of medium to fine yarn count. Yarn Physical properties of yarns, unevenness and imperfections were studied and statistically analysed. Results revealed that the 100% acrylic and 50:50 tasar acrylic blended yarns had better properties as compared to 60:40 and 40:60. The addition of acrylic fibre content improved the physical properties, unevenness and imperfection of the blended yarns.

The present study reveals a comparison of the physical properties of three sets of bamboo/ cotton blended yarns of linear density 19.68, 14.76 and 11.81tex with those of 100% cotton yarn. Each set consisted of three yarns of fibre blend ratios 67:33, 50:50, and 33:67. The test results showed that for all the three sets of yarn, the properties of the 50:50 blended yarns were comparable with those of the 100% cotton yarn. In the case of the 19.68-tex yarn set, the 67:33 blended yarn showed properties similar to those of the 50:50 blended yarn. It was also observed that increasing the bamboo content led to a reduction in properties. Thus the quality characteristics of the blended yarn depend upon the bamboo content in the blend.

In this study, a series of blended yarns consisting of 80:20 bamboo/cotton, 67:33 bamboo/cotton, 50:50 bamboo/cotton, 33:67 bamboo/cotton, 20:80 bamboo/cotton, 80:20 bamboo/polyester, 67:33 bamboo/polyester, 50:50 bamboo/polyester, 33:67 bamboo/polyester, and 20:80 bamboo/polyester were produced from blends consisting of bamboo/cotton and bamboo/ polyester. Besides these, 100% bamboo, 100% cotton, and 100% polyester were also produced. All the yarns were produced with two levels of twist per meter (TPM) 76 and 90. It can be found that the yarn unevenness characteristic was affected by the blended ratio of cotton, polyester, and regenerated bamboo fiber. The drop in tenacity of blended yarns in comparison to the constituents is generally lower which is attributed to the elongation at break of the yarns. The variability in tenacity in respect of 100% polyester yarn is quite high in comparison with other yarns. The yarn elongation at break of bamboo/cotton-blended yarns is found to be lower than those of bamboo/polyester-blended yarns. The variability in the work of rupture is found to be lower for bamboo/cotton-blended yarns. Yarn friction values of the yarns noticed that polyester exhibits the highest value at the TPM of 76. The yarn torque values from which it is noticed that 100% polyester yarns spun with the TPM of 76 have a higher torque in both the wet and dry states. The quality characters of yarn depend upon the ratio of bamboo, cotton, and polyester in the blend ratio.

Journal of Textile Science & Engineering

Fibre blend ratio is an important factor that determines the properties of spun yarn. Modal is a regenerated man-made fibre and free from short fibres, neps, and impurities. In this paper, the influence of modal fibre in cotton-modal fibre blend ratio on the blended yarn properties has been studied. Cotton-modal blended yarn with blend ratio of 80:20, 70:30 and 50:50 and 100% cotton yarn of 30 Ne were produced in ring spinning frame. The properties of fibres, slivers, rovings and manufactured yarns were tested by using the Uster HVI, Wrap reel, Wrap block, Uster Evenness tester-5 and Lea strength tester. 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 cotton-modal blended yarns. With the increase of modal fibre percentage, the quality of blended yarns has been improved than 100% cotton yarn. In regards to the CSP value, the cotton-modal blended yarns show an increasing trend with increasing modal fibre percentage in the blend ratio. It can be attributed that the absence of short fibres in modal fibre which phenomena contributes to the yarn properties with increasing the modal fibre percentage.

The Journal of The Textile Institute, 2019

In this study, the physical-mechanical properties of ring spun, ring compact, rotor and air-vortex yarns were investigated. The study was carried with yarn having linear densities of 24.4 tex and 36.7 tex, which were then converted to woven fabrics. The ring spun yarns have higher values of strength but also with higher strength irregularities. Extraordinarily low hairiness was observed in air-vortex yarns due to its unique yarn formation technique. The deviation rate (DR) of yarns have correlation with the mass spectrogram of respective yarns obtained from USTER Tester 5. Rotor and air-vortex yarns exhibited higher coefficient of friction. The woven fabrics made from ring spun yarns exhibited higher tensile and tear strength with higher elongation at break. The fabrics made from air-vortex yarns have very good pilling grade due to less protruding fibres on their surface and good structural integrity.

2002

Effect of blend ratio, strain rate and cone winding from ring bobbins on the tensile properties of polyester/cotton blended yarns under static and dynamic conditions has been studied using USTER Tensorapid and Constant Tension Transport testers. It is observed that the static tensile test overestimates tensile strength and breaking elongation. The static tensile strength and breaking elongation decrease after winding but the dynamic elongation of cotton, polyester and 67:33 polyester/cotton yam increases after winding.

In order to overcome the shortage of cotton fiber and cotton fiber production in China and Pakistan, the study on how to achieve the desired quality parameters for yarn blended from cotton and regenerated bamboo was carried out. In this paper, seven kinds of blended yarn with different blended ratios and same linear density and twist levels were developed. It can be found that the yarn unevenness characteristic was affected by the blended ratio of cotton and regenerated bamboo fiber. If the content of the bamboo fiber is increased, then the unevenness of the yarns will decrease. For the tenacity and the tensile strength of the yarns, the affection of the fiber content is not very obvious. The morphological structures of the blended yarns were also identified with different blended ratio of cotton and bamboo fibers. The thermal gravimeter analysis shows that the weight loss of the blended yarns decreases with the increasing of the bamboo fiber portion. It can be further observed by the FR-IR spectrometers that the reflectance percentage of yarns increases as decreasing of the bamboo fiber portion.