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Behavior of Thermal Insulation Ratio and clo due to Changes in Weight and Thickness of High Thermal Insulation Padding

고보온성 패딩의 중량과 두께 변화에 따른 보온율과 clo의 거동

  • Received : 2016.05.10
  • Accepted : 2016.06.14
  • Published : 2016.06.30

Abstract

In the previous study of constant packing density when padding low thermal insulation, heat resistance and thermal insulation ratio (%) was determined to increase proportionally with the thickness. This study investigates the change in the thermal insulation ratio and clo with increase in weight and thickness of the padding, which has high thermal insulation performance, and the result is as follows. When the weight or thickness of the padding is small, the initial thermal insulation ratio (%) increases proportionally with the weight or thickness. Unlike in previous studies, in this study, the growth rate of thermal insulation ratio decreases from a certain point, and the proportional relationship does not appear. Thereafter, the growth rate of thermal insulation ratio is convergent near zero. Moreover, thermal insulation ratios do not increase even though the weight or thickness increases. If the padding has high thermal insulation performance, the clo increases proportionally with the weight or thickness of the padding. Furthermore, with the aforementioned behavioral characteristics of high thermal insulation padding, high insulation products can be used to improve vitality and survival rate of the wearer because high insulation padding with less weight and thickness than low insulation padding can achieve the same thermal insulation ratio.

Keywords

References

  1. KATS, "Measuring Method for Warmth Keeping Property of Cloth", KS K 0560, 2011.
  2. H. S. Shin, "Studies on the Warmth Keeping Properties of Non-woven Fabrics", J. Incheon Univ., 1983, 5, 153-158.
  3. H. S. Shin, "Studies on the Thermal Characteristics and the Warmth Retaining Properties of Non-woven Fabric-on the Change of Thickness and Air Layer", J. Dankook Univ., 1988, 22, 343-356.
  4. J. M. Lee, "Nonwoven Fabric Having Good Retaining Warming and Preparation Method Thereof", Korea Patent, 10-1276671 (2013).
  5. KATS, "Test Method for Thermal Transmittance of Textile Fabrics", KS K 0466, 2012.
  6. ASTM, "Standard Test Method for Thermal Resistance of Batting Systems Using a Hot Plate", D 1518, 2014.
  7. ASTM, "Standard Test Method for Measuring the Thermal Insulation of Clothing Using a Heated Manikin", F 1291, 2015.
  8. ASTM, "Standard Test Method for Measuring Thermal Insulation of Sleeping Bags Using a Heated Manikin", F 1720, 2014.
  9. E. Tadakazu, S. Hirotsugu, and T. Masonori, "Thermally Insulating Bulky Product and Method for Its Manufacture", European Patent, EP-0038887(1981).
  10. M. Shigemitsu, K. Eiichi, N. Koichi, and M. Yoshiki, "Nonwoven Fabric Made of Fine Denier Filaments and a Production Method Thereof", US Patent, US-5178972(1998).
  11. J. Y. Chun, Y. C. Chun, S. J. Kim, Y. M. Lee, S. W. Seo, S. J. Kang, and J. I. Kim, "Melt-blown Nonwoven Materials with Highsound-absorption and High Thermal Insulation Properties", Korea Patent, 10-0574764(2006).
  12. S. K. Obendorf and J. P. Smith, "Heat Transfer Characteristics of Nonwoven insulating Materials", Text. Res. J., 1986, 56, 691-696. https://doi.org/10.1177/004051758605601107
  13. O. Jirsak, T. G. Sadikoglu, B. Ozipek, and N. Pan, "Thermo-Insulating Properties of Perpendicular-Laid Versus Cross-Laid Lofty Nonwoven Fabrics", Text. Res. J., 2000, 70, 121-128. https://doi.org/10.1177/004051750007000206
  14. M. Mohammadi, P. Banks-Lee, and P. Ghadimi, "Determining Effective Thermal Conductivity of Multilayered Nonwoven Fabrics", Text. Res. J., 2003, 73, 802-808. https://doi.org/10.1177/004051750307300909
  15. M. K. Song, "Now We Feel as Emotion", Tech Times, 2002, 166, 59-61.
  16. H. S. Shin and Y. S. Kim, "Studies on the Thermal Characteristics and the Warmth Retaining Properties of Nonwoven Fabric(I)-On the Change of Packing Density", J. Korean Fiber Soc., 1987, 24, 42-48.
  17. D. S. Kim, M. S. Park, H. S. Shin, and K. Joo, "Studies on the Thermal Characteristics and the Warmth Retaining Properties of Non-woven Fabric(II)-On the Change of Fabric Packing Density According to the Air Velocity", J. Korean Fiber Soc., 1989, 26, 70-77.
  18. K. W. Lee, M. S. Park, H. S. Shin, and K. Joo, "Studies on the Thermal Characteristics and the Warmth Retaining Properties of Non-woven Fabric(III)-On the Change of Fabric Thickness and Air Velocity", J. Korean Fiber Soc., 1990, 27, 46-53.
  19. M. S. Park, H. S. Shin, and K. Joo, "Studies on the Thermal Characteristics and the Warmth Retaining Properties of Nonwoven Fabric(IV)-On the Change of Fabric Thickness, Density and Air Velocity", J. Korean Fiber Soc., 1991, 28, 46-53.
  20. J. M. Lee and S. H. Lee, "A Model to Convert Thermal Insulation Ratio(%) into clo - Thermal Insulation Ratio(%) Range from 44.9 to 95.5-", Text. Sci. Eng., 2010, 47, 61-70.