Symmetrical circulation gradient color system construction and gradient color yarn spun by a three-channel numerical control spinning system

Abstract

Aiming at the technical drawback that traditional spinning technology cannot accurately control the color distribution of yarn and spin gradient color yarn, a three-channel numerical control spinning mechanism that regulates yarn color gradient online is put forward, and gradient color yarn is successfully produced. The coupling-combination color mixing mode of ternary color fibers is innovatively designed, and the mixing ratio matrix, mixing chromatography matrix and mixing chromatography, including all mixing samples, are constructed. Three kinds of gradient paths, namely the row gradient, column gradient and diagonal gradient, are planned based on the mixing ratio matrix, and the corresponding gradient chromatography matrix and gradient chromatography are given. Taking green, magenta and yellow rovings as an example, a three-channel numerical control spinning process was designed and three types of 16 kinds of gradient color yarns were spun. The results show that the knitted fabric of the gradient yarn spun by digitally adjusting the yarn blending ratio shows a periodic natural and soft gradient color. The mechanical properties and appearance quality of the gradient color yarn are close to the corresponding indexes of color-spun yarn, but there is still room for improvement.

Construction of grid color mixture model of seven primary-color and modified Stearns-Noechel color matching algorithm for color prediction of full-color-gamut rotor melange yarn

“…As seen from equation (8), the process parameters of rotor melange yarn can be obtained through the blending ratio of the corresponding grid points in the full-colorgamut grid color mixture model, thereby spinning the yarn.…”

“…Due to the spatial juxtaposition of color fiber mixing in the textile field, yarn colors obtained by using seven primary color fibers grid blending and three channel NC rotor spinning have different color mixing effects with additive mixing of light and subtractive mixing of pigments. [6][7][8] By adjusting the hue difference, lightness difference, and saturation difference among blending color fibers, as well as the uniformity of blending, better color mixing effects can also be achieved at a specific visual distance. 9,10 Based on this technological background, it is necessary to construct a color model and color prediction theory for melange yarn when carrying out innovative textile color design.…”

Color mixture model of seven primary color fiber grid blending and rotor spinning of full-color gamut mixed color yarn

“…[4][5][6] In traditional rotor color spinning, colored fibers such as dyed fibers, dope-dyed fibers, natural colored fibers, etc., are loosened, carded, repeatedly combined and drawn into slivers through the processes of cotton assorting and grabbing, blowing-carding, and drawing, and then are spun into colored yarns by a rotor spinning machine. 7,8 Faced with the diversity and complexity of order samples, the fragmented work mode of one-to-one proofing and color matching is usually adopted based on the fragmented needs of customized colors. Generally, the color designer selects the color matching scheme based on the experience and the color parameters of the order samples obtained from the test under the standard light source, and determines the primary color fibers and their blending ratio.…”