KR-20260067593-A - MANUFACTURING METHOD OF ECO-FRIENDLY INK FOR DIGITAL TEXTILE PRINTING USING MARINE WASTE

Abstract

The present invention relates to a method for manufacturing eco-friendly DTP ink utilizing marine waste, comprising: an oyster shell milling process (S10) in which oyster shells, which are marine waste, are collected and first crushed into powder, which is then fed into a dynomill to finely refine the particles; an ink intermediate manufacturing process (S20) in which water, a surfactant, an acidity regulator, and an additive are mixed and stirred to produce an ink intermediate; a first filtering process (S30) in which the ink intermediate obtained from the ink intermediate manufacturing process (S20) is filtered to a particle size of 500 to 1000 nm using a first filter; a centrifugation process (S40) in which the ink intermediate obtained from the first filtering process (S30) is separated into layers by centrifugation to obtain a fraction; and a pigment in which the finely refined oyster shell powder obtained from the oyster shell milling process (S10) is mixed with the fraction obtained from the centrifugation process (S40). The method is characterized by being configured to include an oyster shell pigment mixing process (S50) and a secondary filtering process (S60) that filters the oyster shell pigment mixture obtained from the oyster shell pigment mixing process (S50) to a particle size of 800 to 1000 nm using a secondary filter, thereby enabling the production of high-quality, eco-friendly DTP ink that can be used in various industrial fields such as automobiles and recycles resources.

Inventors

• 윤광호

Assignees

• 주식회사 디티아이

Dates

Publication Date

20260513

Application Date

20241106

Claims (2)

1. An oyster shell milling process (S10) in which oyster shells, which are marine waste, are collected and the powder obtained from primary crushing is fed into a dyno mill to finely refine the particles, and An ink intermediate manufacturing process (S20) for manufacturing an ink intermediate by mixing and stirring water, a surfactant, an acidity regulator, and an additive, and A primary filtering process (S30) for filtering the ink intermediate obtained in the above ink intermediate manufacturing process (S20) to a particle size of 500 to 1000 nm using a primary filter, and A centrifugation process (S40) for obtaining fractions by separating the ink intermediate that has undergone the above primary filtering process (S30) into layers by centrifugation, and An oyster shell pigment mixing process (S50) in which a pigment is mixed with the finely ground oyster shell powder obtained in the oyster shell milling process (S10) to the fraction obtained in the centrifugal separation process (S40), and A secondary filtering process (S60) for filtering the oyster shell pigment mixture obtained in the above oyster shell pigment mixing process (S50) to a particle size of 800 to 1000 nm using a secondary filter; A method for manufacturing eco-friendly DTP ink utilizing marine waste, characterized by including at least one step.
2. In Article 1, The above ink intermediate manufacturing process (S20) is; A process step of manufacturing by combining 20 to 30 weight% of water, 4 to 10 weight% of a surfactant, 2 to 5 weight% of an acidity regulator, and as additives, 1 to 4 weight% of an antifoaming agent, 2 to 7 weight% of an emulsifier, 3 to 7 weight% of a humectant, 4 to 11 weight% of a thickening agent, 3 to 12 weight% of a binder, and 2 to 5 weight% of a preservative. The above oyster shell pigment mixing process (S50) is; A process step of manufacturing by mixing the pigment at 10 to 30 weight percent relative to the total weight of the ink intermediate, wherein the finely ground oyster shell powder in the pigment is blended at 10 to 30 weight percent relative to the total weight of the pigment; A method for manufacturing eco-friendly DTP ink using marine waste, characterized by the following:

Description

Manufacturing Method of Eco-Friendly Ink for Digital Textile Printing Using Marine Waste The present invention relates to a method for manufacturing eco-friendly DTP (Digitia Textile Printing) ink utilizing marine waste. More specifically, it relates to a technology for manufacturing high-quality eco-friendly DTP ink that can be used in various industrial fields, such as automobiles, by providing a method for manufacturing eco-friendly ink with nano-fine physical properties suitable for digital printing using a large amount of discarded seashells as a raw material, thereby recycling resources. Generally, various types of marine shellfish, represented by oysters, are harvested or farmed after separating the shells, and only the contents are collected and utilized as agricultural fertilizers, food processing byproducts, etc. According to the Ministry of Oceans and Fisheries, approximately 300,000 to 350,000 tons of shells are generated annually. While some of this is recycled into shell fossil fertilizer, animal feed, raw materials for construction materials, and fill material for reclaimed land in public waters, the rest is being left neglected due to a lack of utilization plans. In particular, oyster shells, which account for the largest share of the single species in the domestic aquaculture industry, are designated as industrial waste. Due to the complicated disposal procedures and the high costs of collection and processing, they have been left abandoned in fishing villages for years, causing wastewater, dust, and odors, which is a major cause of environmental pollution. Meanwhile, the use of recycled materials is accelerating across all industries, and the automotive industry is also actively engaging in the development of eco-friendly products utilizing recycled materials. For example, they are pursuing a premiumization strategy by replacing PVC materials used in the interior and exterior of automobiles with textile materials and printing brand logos on fabrics using eco-friendly materials and manufacturing methods to differentiate the materials. Digital textile printing (DTP) is a convergence technology that combines digital printing technology with textile printing technology. It is a method of producing printed fabric with desired designs and colors by placing the fabric into a printing machine and using a computer and software to print ink. Compared to conventional analog printing processes, this DTP method offers advantages such as reduced processing time and labor, the ability to mass-produce a wide variety of products through automation, ease of applying various patterns and colors, and the minimization of environmental pollution issues through wastewater reduction; consequently, its scope of application has recently expanded significantly. Digital printing is largely carried out by pre-processing, printing, and post-processing processes. If we look at the general composition by referring to previously known technologies, In particular, Korean registered patent No. 10-1502730 comprises a digital printing method comprising a pretreatment process of applying a pretreatment coating agent to the surface of a printing fabric to coat it, a printing process of injecting the pretreated fabric into a digital printing machine and spraying dye to print an image, and a posttreatment process of processing the fabric with the printed image to fix the dye, washing away unfixed dye and residual foreign substances, and then drying it, which is merely an improvement on a generally proposed printing method. FIG. 1 is a process flow diagram of a method for manufacturing eco-friendly DTP ink using marine waste according to the present invention. Figure 2 is a graph showing the results of a particle size measurement test analysis of ink produced by the method for producing eco-friendly DTP ink using marine waste according to the present invention. Hereinafter, the structure and operation according to a preferred embodiment of the method for manufacturing eco-friendly DTP ink using marine waste according to the present invention will be described in detail with reference to the attached drawings. In the following description, specific descriptions of parts that can be easily implemented by a person skilled in the art may be omitted. Furthermore, the following description describes preferred embodiments of the present invention; therefore, the present invention is not limited by the following embodiments, and it is obvious that various modifications may be provided within the scope of the present invention. FIG. 1 is a process flow diagram of a method for manufacturing eco-friendly DTP ink using marine waste according to the present invention, and FIG. 2 is a graph showing the results of a particle size measurement test analysis of ink manufactured by the method for manufacturing eco-friendly DTP ink using marine waste according to the present invention, which will be explained together. The method for manufacturing ec