A method to produce ring single yarn with fancy and anti-frictional structure by feeding filaments in front of the front roller nip

Xue²,

Jin³

2023

Aiming at the demand of spinning full color gamut yarn, this paper builds a gridded color mixing mode for nine primary colored fibers containing 213 grid points and a cylindrical color solid according to the gridded cylindrical color model, and gives the equal lightness, equal hue and equal saturation chromatography matrix of the cylindrical color solid. On the basis of the three-channel computer numerical control (CNC) spinning platform, the three-element spinning mechanism of “digital color mixing spinning process – mixing ratios of colored fibers – colors of forming yarns” has been established, and the processing approach of full color gamut yarns has been provided. According to the 213 grid points of color matching surface of high, medium and low lightness of cylindrical color solid, colored yarn was prepared, and indexes of unevenness, surface hairiness and tensile strength of colored yarns were measured as well, which proved the feasibility of spinning full color gamut yarn.

Section: Performance Testing and Characterization Of Colored Yarnsmentioning

confidence: 99%

Construction of color solid by gridded color mixing of nine primary colored fibers and spinning of full color gamut yarn

Xue²,

Jin³

2023

“…[21][22][23] After that, the tensile properties of the yarns were tested by using a XL-2 yarn tensiometer, and each yarn was tested 20 times with a speed of 500 mm/min, a gauge length of 500 mm and a pre-tension of 12.3 cN. [24][25][26] Yarn color testing and analysis…”

Section: Yarn Performance Testing and Characterizationmentioning

confidence: 99%

Construction of circular-shaped chromatic model and spinning of full color gamut colored yarn by digital blending of three primary colored fibers

Liu²,

Zhang³

et al. 2022

This paper focuses on the construction of the theory of the spinning process for full color gamut colored yarn. A color stereo model of full color gamut reflecting the variation of hue, lightness and saturation in the process of color mixing is established by digital blending of three primary colored fibers so as to realize the visualization of full color gamut gridded color mixing chromatography. A three-channel computer numerical control spinning method incorporating the yarn color, the blending ratios of three primary colored fibers and multichannel coupling drafting ratios and other parameters is proposed according to the digital twin theory that enables the realization of the spinning of full color gamut colored yarn. A novel spinning technique which mainly consists of controlling the hue, brightness and saturation is used to manufacture full color gamut colored yarns according to the three-channel computer numerical control spinning platform. Three series of colored yarns of different hues with equal saturation, different brightness with equal hues, and different saturation with equal hues were prepared as experimental verification, and the yarn indicators such as color, linear density, unevenness, surface hairiness, and tensile strength were measured, and the reasons for their fluctuations were analyzed.

“…[21][22][23][24] A XL-2 automatic single-yarn tensile tester was applied to test the tensile properties of each type of yarn, each sample was tested 20 times, with a test speed of 500 mm/min, and the gauge length was 500 mm, with a pre-tension of 10.5 cN. [25][26][27][28]…”

Section: Performance Testing and Characterization Of Gradient Colored Yarnsmentioning

confidence: 99%

Serialized gradient chromatography for the digital blending of colored fibers and spinning of gradient colored yarn

Cui

et al. 2021

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.