KR-20260067122-A - System And Method for Waterless Dyeing of Yarn Using Vacuum Sublimation Transfer

Abstract

The present invention relates to an apparatus and method for anhydrous dyeing of yarn using vacuum transfer, wherein a vacuum barrier sheet having micropores formed on the outer surface of a porous drum-shaped jig is wound, yarn to be dyed is wound on the outer surface of the vacuum barrier sheet, a transfer sheet coated with dye ink is placed on the outer surface, and then a vacuum pressure is generated through the internal space of the dyeing jig in a high-temperature environment to transfer the dye ink to the yarn.

Inventors

• 장지상
• 이재정
• 김경규
• 박치균
• 최경석

Assignees

• (주)아셈스

Dates

Publication Date

20260512

Application Date

20241105

Claims (7)

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 vacuum barrier sheet made of a material having a plurality of micro-holes through which air passes, installed to surround the outer surface of the porous drum, and on which yarn to be dyed is wound; A transfer sheet that surrounds a yarn wound on the outer surface of the above vacuum barrier sheet, and has dye ink applied to the 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; 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; An anhydrous dyeing device for yarn using vacuum transition including
2. An anhydrous dyeing device for yarn using vacuum transfer, wherein, in claim 1, a dye ink for dyeing yarn is applied to the outer surface of the vacuum barrier sheet.
3. In paragraph 2, an anhydrous dyeing device for yarn using vacuum transfer, wherein the dye ink applied to the vacuum barrier sheet is applied in a pattern reversed from the pattern of the dye ink applied to the transfer sheet.
4. In claim 1, the vacuum barrier sheet is an anhydrous dyeing device for yarn using vacuum transfer, made of any one of breathable pulp, fabric, woven fabric, nonwoven fabric, and resin film.
5. In claim 4, an anhydrous dyeing device for yarn using vacuum transition, wherein the thickness of the vacuum barrier sheet is 0.15 mm or less.
6. A method for anhydrous dyeing of yarn using an anhydrous dyeing device for yarn according to any one of paragraphs 1 to 5, wherein (S1) A step of winding a vacuum barrier sheet around the outer surface of a porous drum; (S2) A step of winding yarn to be dyed onto the outer surface of the vacuum barrier sheet; (S3) A step of winding a transfer sheet having dye ink applied to the outer surface of the above yarn; (S4) A step of inserting the dyeing jig, on which the vacuum barrier sheet, yarn, and transfer sheet are wound, into the process chamber and connecting the dyeing jig to a vacuum generating means; (S5) A step of applying heat to the dyeing jig; and, (S6) 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 dyeing anhydrous yarn using vacuum transition including
7. A method for dyeing anhydrous yarn using vacuum transfer, wherein, in claim 6, dye ink is applied to the outer surface of the vacuum barrier sheet and, when step (S6) is performed, the dye ink of the vacuum barrier sheet is also transferred to the yarn and dyed.

Description

System and Method for Waterless Dyeing of Yarn Using Vacuum Sublimation Transfer The present invention relates to an apparatus and method for dyeing yarn using vacuum transfer, and more specifically, to an apparatus and method for anhydrous dyeing of yarn using vacuum transfer, wherein a vacuum barrier sheet having micropores formed on the outer surface of a porous drum-shaped jig is wound, yarn to be dyed is wound on the outer surface of the vacuum barrier sheet, a transfer sheet coated with dye ink is placed on the outer surface of the yarn, and then a vacuum pressure is generated through the internal space of the dyeing jig in a high-temperature environment to transfer the dye ink of the transfer sheet to 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. However, there is a problem in that during the vacuum transfer process of the dye ink from the transfer sheet to the yarn, uneven vacuum pressure occurs between the holes (vacuum holes) of the jig and the outer part of the holes, which may result in marks on the yarn corresponding to the holes of the jig. FIG. 1 is a cross-sectional view showing an anhydrous dyeing apparatus for yarn using vacuum transition 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 drawing showing another embodiment of a porous drum constituting an anhydrous dyeing device according to one embodiment of the present invention. FIG. 6 is an exploded perspective view of an anhydrous dyeing device according to another embodiment of the present invention. Figure 7 is a cross-sectional view of the main part of the anhydrous dyeing device illustrated in Figure 6. FIG. 8 is a flowchart illustrating an embodiment of an anhydrous dyeing method using an anhydrous dyeing device according to the present invention. An anhydrous dyeing apparatus and method for yarns using vacuum transition 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 the drawings and described in detail in the text. However, this is not intended to limit the present invention to specific disclosed forms, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention. Similar referenc