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KR-20260067126-A - Vacuum transfer type yarn dyeing device and method

KR20260067126AKR 20260067126 AKR20260067126 AKR 20260067126AKR-20260067126-A

Abstract

The present invention relates to a vacuum transfer yarn dyeing apparatus and method that, when executing a process of dyeing yarn wound on a porous drum using a waterless dyeing apparatus, causes the yarn to be dyed with a dye of a predetermined color in an irregular pattern. The vacuum transfer yarn dyeing apparatus according to the present invention may include: a dyeing jig comprising a porous drum in the form of a cylindrical drum having a plurality of vacuum holes formed to penetrate inwardly and outwardly on its outer surface; a transfer sheet surrounding the yarn wound on the outer surface of the porous drum, wherein a dye ink to be transferred to the yarn is applied in a multi-directional square gradient grid pattern on the inner surface in contact with the yarn; a process chamber into which the dyeing jig is introduced; a heating means for applying heat to the dyeing jig in which the vacuum barrier sheet, yarn, and transfer sheet are installed; and a vacuum generating means communicating with the internal space of the porous drum to suck air from the internal space of the porous drum and form a vacuum pressure through the internal space of the porous drum.

Inventors

  • 장지상
  • 이재정
  • 김경규
  • 박치균
  • 최경석

Assignees

  • (주)아셈스

Dates

Publication Date
20260512
Application Date
20241105

Claims (10)

  1. A dyeing jig comprising a porous drum in the form of a cylindrical drum having a plurality of vacuum holes formed to penetrate inwardly and outwardly on the outer surface; A transfer sheet that surrounds a yarn wound on the outer surface of the above-mentioned porous drum, and has a dye ink to be transferred to the yarn applied to an inner surface in contact with the yarn; A process chamber into which the above dyeing jig is introduced; A heating means for applying heat to a dyeing jig on which the above vacuum barrier sheet, yarn, and transfer sheet are installed; and, A vacuum generating means communicating with the internal space of the porous drum and sucking in air from the internal space of the porous drum to form a vacuum pressure through the internal space of the porous drum; Includes, The above transfer sheet is, 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 vacuum transfer type yarn dyeing device in which the dye layer is arranged in a square grid pattern that is continuous in the horizontal and vertical directions of the sheet body, and in each grid pattern, a gradation is formed in which the color of the dye layer gradually fades in multiple directions.
  2. In paragraph 1, A vacuum-transition yarn dyeing device in which a gradient is formed 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, The above dye layer is a vacuum-transition yarn dyeing device arranged in a single-color grid pattern.
  4. In paragraph 1, The above dye layer is a vacuum-transition yarn dyeing device arranged in a grid pattern of multiple colors.
  5. In claim 1, the sheet body is a vacuum transfer type yarn dyeing device made of pulp with fine embossing formed thereon.
  6. A vacuum transfer type yarn dyeing device according to claim 1, further comprising a vacuum barrier sheet made of a material having a plurality of micro-holes formed therein, installed to surround the outer surface of the porous drum, and having yarn to be dyed wound on the outer surface.
  7. A vacuum transfer type yarn dyeing device according to claim 6, wherein a dye ink for dyeing yarn is applied to the outer surface of the vacuum barrier sheet in a grid pattern having a gradient inverted from the grid pattern of the dye ink applied to the transfer sheet.
  8. A vacuum transfer yarn dyeing method using a vacuum transfer yarn dyeing device according to any one of claims 1 to 7, (S1) A step of winding yarn to be dyed around the outer surface of a porous drum; (S2) A step of winding a transfer sheet on which dye ink is applied in a multi-directional gradient grid pattern to the outer surface of the yarn; (S3) A step of inserting the dyeing jig, on which the yarn and transfer sheet are wound, into the process chamber and connecting the dyeing jig to a vacuum generating means; (S4) A step of applying heat to the dyeing jig; and, (S5) A step of operating the vacuum generating means to vacuum exhaust the air in the internal space of the porous drum, thereby creating vacuum pressure in the internal space of the porous drum to transfer the dye ink of the transfer sheet to the yarn for dyeing; A method for transferring dyeing of anhydrous yarn including yarn.
  9. A method for dyeing and transferring anhydrous yarn according to claim 8, wherein a vacuum barrier sheet is wound around the outer surface of the porous drum before performing the above (S1) step.
  10. A method for dyeing and transferring anhydrous yarn according to claim 9, wherein dye ink is applied to the outer surface of the vacuum barrier sheet in a grid pattern having a gradient that is reversed from the grid pattern of the dye ink applied to the transfer sheet, and when step (S5) is performed, the dye ink of the vacuum barrier sheet is also simultaneously transferred to the yarn and dyed.

Description

Vacuum transfer type yarn dyeing device and method The present invention relates to a vacuum transfer type yarn dyeing apparatus and method for dyeing yarn with a specific color and pattern, and more specifically, to a vacuum transfer type yarn dyeing apparatus and method in which a yarn to be dyed is wound on the outer surface of a porous drum, a transfer sheet coated with dye ink in a multidirectional gradient grid pattern is placed over the outer surface, and then a vacuum pressure is generated through the internal space of the porous drum in a high-temperature environment to transfer the dye ink of the transfer sheet to the yarn, thereby performing anhydrous dyeing of the yarn. 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 yarn dyeing device of the vacuum transfer method according to one embodiment of the present invention. FIG. 2 is an exploded perspective view showing the yarn dyeing apparatus illustrated in FIG. 1. Figure 3 is a cross-sectional view of the key part of the yarn dyeing device illustrated 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 constituting a yarn dyeing device 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 part of a yarn dyed using a yarn dyeing device according to one embodiment of the present invention. FIG. 8 is an exploded perspective view of a yarn dyeing device according to another embodiment of the present invention. A vacuum-transfer yarn dyeing apparatus and method according to embodiments of the present invention will be described in detail w