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Volume 33, Issue 1
Displaying 1-7 of 7 articles from this issue
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[in Japanese]1992 Volume 33 Issue 1 Pages 4-8
Published: January 25, 1992
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (678K) -
[in Japanese]1992 Volume 33 Issue 1 Pages 9-16
Published: January 25, 1992
Released on J-STAGE: September 30, 2010
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[in Japanese]1992 Volume 33 Issue 1 Pages 17-23
Published: January 25, 1992
Released on J-STAGE: September 30, 2010
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[in Japanese]1992 Volume 33 Issue 1 Pages 24-29
Published: January 25, 1992
Released on J-STAGE: September 30, 2010
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[in Japanese], [in Japanese]1992 Volume 33 Issue 1 Pages 41-46
Published: January 25, 1992
Released on J-STAGE: September 30, 2010
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Kuniko Aya, Kozo Shimazaki, Atsuko Shimada1992 Volume 33 Issue 1 Pages 47-55
Published: January 25, 1992
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDynamic thread tensions during overlock machine sewing were measured and the influence on the stitch configurations and the seam characteristics such as stretchability and loose stitch was discussed. The results obtained were as follows;
(1) Some peaks were observed on needle, right-hand looper and left-hand looper tensions during sewing (see Fig.2) . By changing the tension disc settings, some typical stitch configurations were obtained. The stitch forms were classified into two and four groups using explanatory variables such as the thread tension peaks and stitch length. It was possible to use the static thread tensions instead of the dynamic ones in classifying the stitch configurations.
(2) Three thread length in seams were calculated by the multiple regression analysis using explanatory variables as mentioned above. The static thread tensions were also useful in predicting the thread length in seams.
(3) Of all the three sewing thread consumption in seams, the shortest one is related to the breaking elongation of seams. The seam elongation can be predicted by using a linear relationship between the seam elongation and the shortest thread length.
(4) The amount of seam grin was mainly determined by the needle thread consumption.View full abstractDownload PDF (1028K) -
—Color of Shadow Parts on Textiles—Takashi Hiramatsu, Akiko Kotani1992 Volume 33 Issue 1 Pages 56-61
Published: January 25, 1992
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe color of textiles on CRT when they are in the shadow is studied by using the luminance of phosphors, and the following results are obtained.
(1) Concerning the mean luminance of colored fabrics, the luminance of the typical color in the shadow part is much smaller than that in the bright part, and their ratio is smaller than the ratios with other color components.
(2) Not only the specific brightness defined as L/256 but also the specific saturation defined as (L-Lo) /L in the shadow part are smaller than those with a typical color in the bright part, regardless of fabric colors, where L is the luminance of the typical color phosphors, 256 is the maximum of L, and Lo is the mean luminance of the other color phosphors.View full abstractDownload PDF (609K)
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