撚糸について-6-
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概要
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The twist shrinkage of single and ply yarns is represented theoretically as a function of yarn twist, neutral radius, and diameter of ply yarns (cord gauge in tire cords). The theoretical results are compared with experimental. The theoretical results obtained are : <BR>1) Twist shrinkage X of single yarns is represented approximately by the following equation as a function of single yarn twist n<SUB>1</SUB> and neutral radius r<SUB>n</SUB>, if 4π<SUP>2</SUP> n<SUP>2</SUP><SUB>1</SUB>r<SUP>2</SUP><SUB>n</SUB><<1<BR>X=200π<SUP>2</SUP>r<SUP>2</SUP><SUB>n</SUB>n<SUP>2</SUP><SUB>1</SUB>+…<BR>2) Twist shrinkage Y of ply yarns is represented approximately by the following equations as a function of ply yarn twist N, single yarn twist n and diameter d of the ply yarns, if 4N<SUP>2</SUP>d<SUP>2</SUP><<1<BR>Y=12.5π<SUB>2</SUB>d<SUB>2</SUB>[N<SUB>2</SUB>+(N-n)<SUB>2</SUB>]+…(2-ply yarn) Y=14.36 π<SUP>2</SUP>d<SUP>2</SUP>[N<SUB>3</SUB>+0.75(N-n)<SUB>2</SUB>]+…(3-ply yarn)
- 社団法人 日本繊維機械学会の論文
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