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KR-20260067123-A - Transfer sheet for anhydrous dyeing

KR20260067123AKR 20260067123 AKR20260067123 AKR 20260067123AKR-20260067123-A

Abstract

The present invention relates to a transfer sheet for anhydrous dyeing of yarn, wherein a dye of a predetermined color is dyed in an irregular pattern on the yarn when a process of dyeing yarn wound on a porous drum using an anhydrous dyeing device is performed by a vacuum transfer method. The transfer sheet for anhydrous dyeing of yarn according to the present invention comprises: a sheet body wound at a rate of 360° or more on the porous drum to cover the outer side of the yarn; and a dye layer formed by printing dye ink on one surface of the sheet body that contacts the yarn; wherein the dye layer is arranged in a square grid pattern that is continuous in the horizontal and vertical directions of the sheet body, and a gradation is formed in which the color of the dye layer gradually fades in multiple directions in each grid pattern.

Inventors

  • 장지상
  • 이재정
  • 김경규
  • 박치균
  • 최경석

Assignees

  • (주)아셈스

Dates

Publication Date
20260512
Application Date
20241105

Claims (5)

  1. A transfer sheet for anhydrous dyeing wound onto a porous drum to cover a yarn while the yarn is wound on the outer surface of a porous drum in which a vacuum pressure is formed internally, A sheet body wound at a rate of 360° or more on the porous drum to cover the outer side of the above yarn; and, A dye layer formed by printing dye ink on one surface of a sheet body in contact with the above yarn; Includes, A transfer sheet for anhydrous dyeing of yarn, wherein the dye layer is arranged in a continuous square grid pattern in the horizontal and vertical directions of the sheet body, and in each grid pattern, a gradation is formed in which the dye layer gradually lightens in multiple directions.
  2. In paragraph 1, A transfer sheet for anhydrous dyeing of yarn having a gradient formed in the direction of the gradient of the dye layer, starting from any one of the positions of 0°, 45°, 90°, 135°, 180°, 225°, 270°, and 315°, with the center of the top horizontal side of the grid pattern set as 0°.
  3. In paragraph 1 or 2, The above dye layer is a transfer sheet for anhydrous dyeing of yarn arranged in a grid pattern of a single color.
  4. In paragraph 1 or 2, The above dye layer is a transfer sheet for anhydrous dyeing of yarn arranged in a grid pattern of multiple colors.
  5. In claim 1, the sheet body is a transfer sheet for anhydrous dyeing of yarn made of pulp with fine embossing formed thereon.

Description

Transfer sheet for anhydrous dyeing of yarn The present invention relates to a transfer sheet for anhydrous dyeing of yarn for dyeing a yarn with a specific color and pattern, and more specifically, to a transfer sheet for anhydrous dyeing of yarn used in a process of performing anhydrous dyeing of yarn by winding yarn to be dyed onto the outer surface of a porous drum, covering the outer surface with a transfer sheet coated with dye ink in a predetermined design, and then transferring the dye ink of the transfer sheet to the yarn by generating vacuum pressure through the internal space of the porous drum in a high-temperature environment. Generally, to express various patterns or colors in fabrics, a method using different colored threads for the warp and weft was employed. However, this fabric production method resulted in standardized patterns and colors that could not be varied, and obtaining unique images required multiple preparation steps, leading to significant increases in production costs. In addition, in order to partially dye yarn, it is necessary to equip multiple dyeing tanks and go through multiple winding processes, which requires a lot of equipment and the resulting installation costs are a factor that increases production costs. Furthermore, the multiple winding processes are not only very cumbersome, but there is also a problem that dyeing into irregular shapes is not done well. To solve this problem, Korean Registered Utility Model No. 20-0334356 discloses a multi-color dyeing device capable of providing yarns of various colors by spraying pigment onto the outer diameter of yarn wound on a bobbin and performing vacuum suction so that the sprayed pigment can be uniformly absorbed into the inner diameter. However, conventional dyeing devices, including the aforementioned registered utility model, utilize a method of spraying or dipping a liquid mixed with dye, which generates a large amount of pollutants and wastewater during the dyeing process. Consequently, purifying these pollutants requires significant time and cost, which not only reduces economic efficiency but also makes complete purification difficult, thereby having a negative impact on the environment. Accordingly, the applicant has developed a vacuum transfer device (Republic of Korea Registered Patent No. 10-2389252) capable of anhydrous dyeing yarn by winding yarn to be dyed onto the outer surface of a porous drum-shaped jig, covering the outer surface with a transfer sheet coated with dye ink, and then generating vacuum pressure through the internal space of the dyeing jig to transfer the dye ink to the yarn. The 'vacuum transfer device for anhydrous dyeing of yarn' of the aforementioned registered patent has the advantage of improving economic efficiency and eco-friendliness, as the dyeing process can be carried out very quickly and easily using heating and vacuum transfer methods without using liquid, and since there is no need to purify the liquid for dyeing. When dyeing yarn with a specific color and pattern using a waterless dyeing device of this vacuum transfer method, if the yarn wound on the drum is dyed such that a pattern of the specific color is repeatedly arranged at regular intervals and with a specific tone, when a fabric with a melange effect is woven from the dyed yarn, the pattern may repeatedly overlap at the same point on the fabric, forming a specific pattern on the fabric; in this case, there is a problem in that the desired melange effect cannot be achieved. In addition, when a pattern is formed on the transfer sheet in the form of a distorted teardrop or a non-circular random pattern, it is difficult to predict the dyeing pattern that will be expressed in the yarn, so there is a problem in that it is difficult to predict what pattern will be expressed in the fabric when the fabric is woven with the dyed yarn in the future. FIG. 1 is a cross-sectional view showing a vacuum transfer type anhydrous dyeing apparatus using a transfer sheet according to one embodiment of the present invention. FIG. 2 is an exploded perspective view showing the anhydrous dyeing apparatus illustrated in FIG. 1. Figure 3 is a cross-sectional view of the main part of the anhydrous dyeing device shown in Figure 1. Figure 4 is an enlarged cross-sectional view of part A of Figure 3. FIG. 5 is a plan view showing a transfer sheet according to one embodiment of the present invention. Figure 6 is a diagram showing an example of the gradient direction of the grid pattern formed on the transfer sheet of Figure 5. FIG. 7 is a drawing showing a portion of a yarn dyed using a transfer sheet according to one embodiment of the present invention. A transfer sheet for anhydrous dyeing of yarn according to embodiments of the present invention will be described in detail with reference to the attached drawings. Since the present invention is susceptible to various modifications and may take various forms, specific embodiments are illustrated in t