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KR-102959308-B1 - Method for manufacturing high-density polyethylene yarn containing boron nitride for cooling and Fabrics thereby

KR102959308B1KR 102959308 B1KR102959308 B1KR 102959308B1KR-102959308-B1

Abstract

The present invention relates to a method for manufacturing a high-density polyethylene yarn containing boron nitride for cooling, which produces a yarn with excellent cooling properties by extruding a high-density polyethylene polymer containing boron nitride particles with high thermal conductivity at a temperature above its melting point. The yarn exhibits superior thermal conductivity compared to commonly used polyester (PET), polypropylene, and polyethylene yarns, rapidly releasing thermal energy transferred from the human body to the outside to dissipate thermal energy accumulated in the fabric. Furthermore, due to the characteristics of the boron nitride material, it exhibits excellent flexibility and rigidity, thereby providing superior performance in terms of soft touch and high anti-pilling properties. The invention also relates to a method for manufacturing a fabric using the high-density polyethylene yarn containing boron nitride for cooling, which enables the production of fabrics requiring a cooling effect, such as bed sheets, sportswear, and masks, using the high-density polyethylene yarn containing boron nitride.

Inventors

  • 김대식

Assignees

  • 코티마주식회사

Dates

Publication Date
20260507
Application Date
20251022

Claims (10)

  1. A method for manufacturing a high-density polyethylene yarn for cooling containing boron nitride, characterized by being produced by mixing and dispersing hexagonal boron nitride with excellent thermal conductivity into a high-density polyethylene raw material and then melting, extruding, cooling, and stretching, wherein the spinning spin draft is 50 to 200, the temperature of the cooling air is 16 to 30℃, and the cooling air speed is 0.3 to 0.5 m/sec, and the yarn is manufactured using a spindraw method having a crystallinity of 60% to 70% as measured by X-ray diffraction, and having mechanical properties such as a strength of 5 to 10 g/den and an elongation in the range of 17 to 60%.
  2. In paragraph 1, A method for manufacturing a high-density polyethylene yarn for cooling containing boron nitride, characterized in that the boron nitride is 0.1 to 10 wt% of the total raw material.
  3. In paragraph 1, A method for manufacturing a high-density polyethylene yarn for cooling containing boron nitride, characterized in that the above yarn has a thermal conductivity of 0,003 w/cm².℃ or higher.
  4. delete
  5. In paragraph 1, A method for manufacturing a high-density polyethylene yarn for cooling containing boron nitride, characterized in that the boron nitride is introduced using compounding and a side feeder.
  6. delete
  7. A high-density polyethylene yarn containing boron nitride, produced by the yarn manufacturing method of any one of paragraphs 1, 2, 3, and 5.
  8. A fabric made of high-density polyethylene yarn containing boron nitride, produced by the yarn manufacturing method of any one of paragraphs 1, 2, 3, and 5.
  9. In paragraph 8, The above fabric is a fabric made of high-density polyethylene yarn containing boron nitride for cooling, characterized by being made by interlacing the yarns.
  10. In Paragraph 9, A fabric made of high-density polyethylene yarn containing boron nitride for cooling, characterized by having an interlace count of 20 to 60 ea/m.

Description

Method for manufacturing high-density polyethylene yarn containing boron nitride for cooling and fabrics thereby Method for manufacturing high-density polyethylene yarn containing boron nitride for cooling and Fabrics thereby The present invention relates to a method for manufacturing a high-density polyethylene yarn with maximized cooling properties and a fabric using the same. More specifically, it relates to a method for manufacturing a high-density polyethylene yarn containing boron nitride for cooling purposes, wherein the yarn with excellent cooling properties is produced by extruding a high-density polyethylene polymer containing boron nitride particles with high thermal conductivity at a temperature above the melting point. In particular, the present invention relates to a method for manufacturing a high-density polyethylene yarn containing boron nitride for cooling, which exhibits excellent thermal conductivity compared to commonly used polyester (PET), polypropylene, and polyethylene yarns, rapidly releasing thermal energy transferred from the human body to the outside to dissipate thermal energy accumulated in the fabric, and also has excellent flexibility and rigidity according to the characteristics of the boron nitride material, thereby having excellent performance in terms of soft touch and high anti-pilling properties. In addition, the present invention relates to a method for manufacturing a fabric using a high-density polyethylene yarn containing boron nitride for cooling, which can be used to manufacture fabrics requiring a cooling sensation, including bed sheets, sportswear, and masks. Yarn is a thread that serves as a material for making textile products such as woven fabrics, knitted fabrics, lace, and mesh, and various types with diverse functionalities are being developed to provide various functionalities to woven fabrics. In particular, as global temperatures rise due to the impact of global warming, which is rapidly progressing due to environmental pollution, and sweltering summer heat is becoming commonplace, the need for cooling fabrics to overcome this is increasing even further. Accordingly, there is a lot of development going on for cooling fabrics to provide a cooler touch, and the main materials of cooling fabrics currently in use are generally made by adding inorganic fillers or thermoplastic elastomers to polyester (PET) yarns to improve contact cooling, or by maximizing the thermal conductivity of the polymer itself. There are various technologies related to methods for manufacturing such cooling fabrics, and examples include Patent Documents 1 to 6. Patent Document 1 is a cooling fiber having acrylic beads attached to the surface of the fiber, characterized by having a qmax value of 0.17 J/sec/ cm² or higher, and Patent Document 2 is a polyamide fiber comprising 3 to 6.5% titanium oxide and 0.01 to 1% magnesium compound, having an amino terminal group content of 4×10-5 to 8×10-5 mol/g, wherein titanium oxide is uniformly dispersed within and on the surface of the polyamide fiber, and the polyamide fiber has a single filament fineness of 0.5 to 3 dtex, a Young's modulus of 20 to 40 cN/dtex, and a filament-to-filament kinetic friction coefficient (μ) of 0.15 to 0.5. Patent Document 3 describes a method for making a cooling fabric by scattering or reflecting sunlight by dispersing 5-sodium sulfoisophthalic acid and adipic acid components inside and outside the fibers with cellulose acetate multifilament yarn. However, conventional yarns not only lack cooling properties but also cause problems such as static electricity due to the nonconductivity of the synthetic fibers themselves. Furthermore, these conventional technologies focus on blocking external thermal energy, which has the disadvantage of being ineffective for indoor spaces or for users who are already feeling the heat. In addition, yarns produced by conventional cooling yarn manufacturing technology utilize evaporative heat by absorbing sweat, which has limitations as it only works in environmental conditions where humidity is relatively high and the user sweats, and the method of improving cooling properties by dispersing inorganic fillers has a problem in that the fabric's texture becomes rough due to the influence of inorganic fillers, thereby degrading the fabric's inherent sensibility. Therefore, a method is required that can improve the thermal conductivity of the fabric itself to quickly dissipate transferred energy, and a method that can always perform regardless of environmental factors. The present invention can be implemented with various modifications, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. In describing each drawing, simil