KR-20260062338-A - Functional fabric for shoe manufacturing using bio-antimicrobial agents and phase transition materials

Abstract

The present invention relates to a functional fabric for manufacturing shoes using a bio-antimicrobial agent and a phase transition material, characterized by comprising 100 parts by weight of a water-based polyurethane resin, 5 to 10 parts by weight of a chitosan antimicrobial agent, and 5 to 10 parts by weight of a phase transition material.

Inventors

• 오진현

Assignees

• ㈜핀프로젝트코리아

Dates

Publication Date

20260507

Application Date

20241029

Claims (1)

1. 100 parts by weight of water-based polyurethane resin; A functional fabric for footwear manufacturing using a bio-antimicrobial agent and a phase transition material, characterized by comprising 5 to 10 parts by weight of a chitosan antimicrobial agent; and 5 to 10 parts by weight of a phase transition material.

Description

Functional fabric for shoe manufacturing using bio-antimicrobial agents and phase transition materials The present invention relates to a functional fabric for manufacturing shoes having excellent antibacterial effect and breathability, manufactured using chitosan powder, a bio-antimicrobial agent, and a phase transition material. Conventional shoe cup insoles lack ventilation holes, resulting in poor airflow. Consequently, prolonged wear hinders the efficient release of sweat from the feet, leading to severe foot odor. Furthermore, this sweat poses a risk of bacterial growth inside the shoe. In other words, the poor circulation of air within the shoe causes sweat and moisture to remain trapped, leading to severe hygiene issues such as the development of skin conditions like athlete's foot. To address these problems, Korean Registered Patent No. 10-1807844 was disclosed. However, the aforementioned document relates to a shoe with improved breathability and a method for manufacturing the same; while it discloses a method of manufacturing a shoe using a breathable waterproof fabric after manufacturing it, one cannot expect antibacterial effects or comfort derived from the fabric itself. FIG. 1 is a test report showing the tensile strength, tensile elongation, and wash fastness of a functional fabric for manufacturing shoes using a bio-antimicrobial agent and a phase transition material according to the present invention. FIG. 2 is a test report on the antibacterial properties of a functional fabric for manufacturing shoes using a bio-antibacterial agent and a phase transition material according to the present invention. FIG. 3 is a test report on the yellowing of a functional fabric for shoe manufacturing using a bio-antimicrobial agent and a phase transition material according to the present invention. Hereinafter, the technical concept of the present invention will be explained in more detail using the attached drawings. The attached drawings are merely examples illustrated to further explain the technical concept of the present invention, and therefore the technical concept of the present invention is not limited to the form of the attached drawings. The functional fabric for manufacturing shoes using a bio-antimicrobial agent and a phase transition material according to the present invention comprises a water-based polyurethane, a chitosan antimicrobial agent, and a phase transition material. It is preferable to add 100 parts by weight of water-based polyurethane resin, 5 to 10 parts by weight of chitosan antimicrobial agent, and 5 to 10 parts by weight of phase transition material. At this time, a dispersant and an antifoaming agent are additionally added, and it is preferable to add a modified polyacrylate as the dispersant and an organometallic polymer and an organometallic compound as the antifoaming agent. Water-based polyurethane resin is a water-dispersible polyurethane resin prepared by mixing polycarbonate diol, 2,2-hydroxymethylpropionic acid (2,2-Bis(hydroxymethyl)propionic acid), isophorone diisocyanate, trimethylamine, ethylenediamine, methyl ethyl ketone (MEK), and water. At this time, it is preferable that polycarbonate diol, 2,2-hydroxymethylpropionic acid, isophorone diisocyanate, trimethylamine, and ethylenediamine be added in a molar ratio of 1:1:3:1:1, respectively. This mixing ratio is intended to obtain physical properties suitable for fabrics for shoe manufacturing, and it is preferable that the water-based polyurethane prepared in this way has a viscosity of less than 100 cps. In addition, a chitosan antimicrobial agent is added in an amount of 5 to 10 parts by weight. Chitosan is a natural antimicrobial agent added to provide an antimicrobial effect to the functional fabric. At this time, the chitosan antimicrobial agent is added in powder form; if the chitosan antimicrobial agent is added in an amount of less than 5 parts by weight, it is difficult to obtain an antimicrobial effect, and if it is added in an amount exceeding 10 parts by weight, it is difficult to disperse; therefore, it is preferable to add only 5 to 10 parts by weight of the chitosan antimicrobial agent. This will be explained in detail in Experimental Examples 1 and 2 below. In addition, it is preferable that the water-based polyurethane resin containing a chitosan antimicrobial agent be dispersed in a stirrer or processed through a 3-roll mill for dispersion. When dispersing the chitosan antimicrobial agent using a stirrer, it is preferable to add only 5 to 7 parts by weight of the chitosan antimicrobial agent. This is because when dispersing the chitosan antimicrobial agent using a stirrer, it is difficult to exhibit antimicrobial properties if the content of the chitosan antimicrobial agent is less than 5 parts by weight, and separation occurs if it exceeds 7 parts by weight without dispersion. When dispersing the chitosan antimicrobial agent using a 3-roll mill, it is preferable to add only 10 parts by weigh