Studies on the Ability of Wads (Part 10)

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  • 各種綿の性能に関する研究 (第10報)
  • カクシュ メン ノ セイノウ ニカンスルケンキュウ 10 カケフトンヨウ ナカ
  • Permeabilities of Air and Water Vapor through Wad for Quilts
  • 掛けふとん用中入綿の透湿性と通気性

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This paper describes the relation between the moisture affinity of fibers and the porosity of wads by testing the permeabilities of air and water vapor through wads with synthetic fiber and cotton wads which are sold in the market. From the experiments with specimens of 5 cm in thickness having a porosity of 91-99%, the following results are obtained. (1) The correlation coefficient between the permeabilities of air and water vapor through specimens is more than 0.9. (2) When both the thickness and the porosity of cotton wads are equal to those of wads with synthetic fiber, the permeability of air of the former is remarkably smaller than that of the latter. Accordingly, the permeability of water vapor of the former is smaller than that of the latter.

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