Comfort properties of bamboo/cotton blended knitted fabrics produced from rotor spun yarns

Gradient colored yarns are manufactured by controlling the blending ratios of three-primary-colored fibers in a slight distribution of gradients along the yarn length, thereby resulting in a continuous natural variation in mixed colors of the fibers throughout the whole yarn. The spinning of gradient colored yarns still remains a challenge, which requires the reliance on digital blending theory of colored fibers and the supporting of multi-channel computer numerical control (CNC) spinning technique. This paper constructed a three-primary-colored fiber gridded color mixing model and its mass mixing matrix and color mixing chromatography matrix by mass discretization and coupling pairing with a 10% gradient for the three-primary-colored fibers. With the aim of continuous natural gradient of mixed colors, the blending ratio gradient path of three-primary-colored fibers was planned based on the mass mixing matrix, and a method of regulating the gradient of color difference between adjacent color segments was proposed. In order to realize the natural gradient of color of the forming yarn, the spinning mechanism of gradient colored yarn was established based on three-channel CNC spinning mechanism and the time-series yarn simulation model, and the time-series spinning processing parameters of three-channel CNC spinning machine were devised. Four gradient colored yarns with different gradient paths were designed and prepared, the linear density, twist, unevenness, surface hairiness, and tensile strength of the spun yarns were measured, compared, and analyzed, and knitted fabrics with color gradient effect were fabricated by small circular knitting machine to obtain continuous and natural color transition with a dreamy and mysterious color effect.

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Factors Affecting Defects in Plain-Weft Knitted Fabrics due to Knots of Spun Yarns

Journal of the Textile Machinery Society of Japan ◽

10.4188/jte1955.32.36 ◽

1986 ◽

Vol 32 (2) ◽

pp. 36-39 ◽

Cited By ~ 2

Author(s):

Ryuzo Oinuma

Keyword(s):

Knitted Fabrics ◽

Factors Affecting ◽

Spun Yarns

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Research of 3D weft-knitted fabrics designed to protect against mechanical risks and suitable for contact with skin

Journal of Industrial Textiles ◽

10.1177/1528083720925831 ◽

2020 ◽

pp. 152808372092583

Author(s):

Julija Krauledaitė ◽

Kristina Ancutienė ◽

Sigitas Krauledas ◽

Virginijus Urbelis ◽

Virginija Sacevičienė

Keyword(s):

Molecular Weight ◽

High Molecular Weight ◽

Outer Layer ◽

Steel Wire ◽

Strong Positive Correlation ◽

Knitted Fabrics ◽

Spun Yarns ◽

Puncture Force ◽

Multifilament Yarns ◽

Knitted Structure

Eight different 3D weft-knitted fabrics, consisting of outer, binding, and inner layers, were designed and produced on E20 and E28 circular weft-knitting machines. First, in the outer layer, high molecular weight polyethylene multifilament yarns and steel wire (0.05 mm diameter), twisted with high molecular weight polyethylene multifilament yarns, were used because of their exceptional properties to resist the mechanical risks. Second, in the inner layer, hydrophobic polyester spun yarns were chosen for their suitability to be used in contact with skin. Finally, in the binding layer, synthetic elastic textured polyamide yarns were used to connect the outer and inner layers. Following the standard EN 388, diverse tests were conducted to determine the resistance of the developed 3D weft-knitted fabrics to mechanical risks, i.e., circular blade cut, puncture, abrasion, and tear. The analysis showed that the quantity of steel wire in knitted structure highly influences circular blade cut and abrasion resistance, and moderately influences tear resistance for all the investigated knitted fabrics. While a strong positive correlation between the quantity of steel wire and the puncture force was defined only for 3D fabrics knitted on an E20 circular weft-knitting machine. The findings of the research lead to the conclusion that the designed 3D weft-knitted fabric structures, where the outer layer ensures protection against mechanical risks, while the inner layer is designed for contact with skin, provide complex protection against diverse mechanical risks.

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Investigation of Moisture Transportation Properties of Knitted Fabrics Made from Viscose Vortex Spun Yarns

Journal of Engineered Fibers and Fabrics ◽

10.1177/155892501400900318 ◽

2014 ◽

Vol 9 (3) ◽

pp. 155892501400900 ◽

Cited By ~ 2

Author(s):

Salome Kyatuheire ◽

Li Wei ◽

Josphat Igadwa Mwasiagi

Keyword(s):

Water Vapor ◽

Research Work ◽

Water Vapor Permeability ◽

Vapor Permeability ◽

Knitted Fabrics ◽

Clothing Comfort ◽

Fabric Structure ◽

Viscose Fibers ◽

Spun Yarns ◽

Transportation Characteristics

Moisture transportation through fabrics is one of the important parameters which affect clothing comfort. The combination of different factors which include fiber, yarn and fabric structure will yield varying degrees of clothing comfort. This research work concentrated on the use of viscose fibers spun on the vortex spinning system. Six knitted fabric samples were produced and tested for moisture transportation characteristics, which included air and water moisture permeability. The results indicate that all structures had high wicking levels in the wale than in the course direction. Similarly, all fabrics had poor drying abilities, but good water vapor permeability. There was a good correlation between air permeability and water vapor permeability of the fabrics. This was attributed to the fiber in the yarn not the fabric structure.

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Performance of Open-End and Ring Spun Yarns in Weft Knitted Fabrics

Textile Research Journal ◽

10.1177/004051750007000215 ◽

2000 ◽

Vol 70 (2) ◽

pp. 177-181 ◽

Cited By ~ 38

Author(s):

C. Candan ◽

U.B. Nergis ◽

Y. Iridağ

Keyword(s):

Knitted Fabrics ◽

Spun Yarns

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Optimization Bursting Strength and Weight of Plain Knitted Fabrics by Design Expert Analysis Method

Journal of Engineered Fibers and Fabrics ◽

10.1177/155892501501000402 ◽

2015 ◽

Vol 10 (4) ◽

pp. 155892501501000 ◽

Cited By ~ 1

Author(s):

Ebrucoruh Coruh ◽

Nihat Çelik

Keyword(s):

Strength Properties ◽

Optimum Process ◽

Knitted Fabrics ◽

Bursting Strength ◽

Customer Expectations ◽

Design Expert ◽

Spun Yarns ◽

Expert Analysis ◽

End Use ◽

Fabric Production

The most important problem for fabric production is finding the best end use and meeting customer expectations. In this paper, we studied plain knitted fabrics made from OE rotor spun yarns. The yarns are produced from different nozzle types while they are at the same cotton counts as Ne 30/1. The yarns are knitted adjusting the yarn loop lengths between 14 cm and 17 cm on the machine as they are the minimum and the maximum values limited by the yarn type, machine and commercially accepted conditions. The purpose of the study is to ensure that the quality of knitted fabric is reached without specific constraints before producing the fabric with desired weight and bursting strength properties. All the results are optimized with minimum error. The test results were analyzed using Design Expert software 6.01 to predict the optimum process parameters for weight and bursting strength of the fabric. Actual and predicted results are compared.

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