染色に於ける呉汁の研究（第一報）

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タイトル別名
  • 染色に於ける呉汁の研究-1-
  • センショク ニ オケル ゴジル ノ ケンキュウ 1
  • A Study of Soybean Juice in Dyeing (I)

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抄録

For the purpose of studying soybean juice in dyeing, I tried to find the relation between the passage of time and the degree of permeation of the dyestuff by comparing it with the frequency of application of the dyestuff and obtained the following results. (1) Whether the cloth was washed or not washed, the best result was obtained through twice-dyeing in any density of juice. (2) With the lapse of time a greater change of permeation was seen on the washed cloth than on the unwashed one. (3) As a result of these experiments it was found that in the case of painting-brush-tracing-dyeing and brush-sweeping-dyeing on the broad cloth woven of No.60 cotton yarn it was not necessary to take off starch and that it was better to dye twice in 10% to 15% density of soybean juice. (4) Judging from the fact that the passage of time does not affect the permeation into the cloth, we can say that twice-dyeing on the unwashed cloth, coated in 20% density of soybean juice, may be recommended, but this method is not so satisfactory when viewed from the points of permeation into the back side of the cloth, the stiffening of the cloth and the poor mixture of a yellowish color called "gojiruyake" with other colors of dyestuff.

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