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Volume 38, Issue 3
Displaying 1-7 of 7 articles from this issue
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[in Japanese]1997 Volume 38 Issue 3 Pages 122-127
Published: March 25, 1997
Released on J-STAGE: December 10, 2010
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[in Japanese]1997 Volume 38 Issue 3 Pages 128-135
Published: March 25, 1997
Released on J-STAGE: September 30, 2010
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[in Japanese]1997 Volume 38 Issue 3 Pages 136-141
Published: March 25, 1997
Released on J-STAGE: September 30, 2010
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[in Japanese]1997 Volume 38 Issue 3 Pages 142-145
Published: March 25, 1997
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (438K) -
[in Japanese]1997 Volume 38 Issue 3 Pages 146-149
Published: March 25, 1997
Released on J-STAGE: September 30, 2010
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Masao Enomoto, Yoichiro Muraoka, Kazuaki Suehiro1997 Volume 38 Issue 3 Pages 157-166
Published: March 25, 1997
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSWaterproofed moisture-permeable nylon fabrics were prepared by wet-coagulation process using blend of polyester type polyurethane (PU) /polyvinyl chloride (PVC) resins, and their wearing comfort as well as end-use properties were investigated.
Wearing comfort consists of three factors : (1) wetting sensibility, (2) tightness feeling, and (3) contact feeling. The wetting sensibility was measured by moisture permeability, waterproofing, dew drop coagulation, and water absorption. The tightness feeling was measured by the coefficients of friction. The contact feeling was measured by the coefficient of friction on artificial skin and KES system.
The end-use properties were measured by the abrasion resistance, the crumple resistance, and the peeling strength of the coated fabrics.
Waterproofing, water absorption, and the coefficient of friction of the coated fabrics were decreased with increasing the blend ratio of PVC/PU, and the feeling was improved in slipping touch, where as moisture permeability was almost constant. The dew drop coagulation value showed minimum at PU/PVC=80/20 (weight) . While the abrasion resistance was improved, the crumple resistance and the peeling strength were deteriorated. The coated fabrics left the problem for the end-use properties as the quality maintenance. However, it has become obvious that the possibility to obtain excellent wearing comfort of the coated fabrics can be attained by the minute adjustment of the coating polymer composition. (Received May 31, 1996)View full abstractDownload PDF (4331K) -
-Evaluation for F.R.L. Draped Figures-Noriko Suda, Katsuhiko Inagaki, Akira Nakayama1997 Volume 38 Issue 3 Pages 167-172
Published: March 25, 1997
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSIn this paper, samples of 15 different materials such as fabrics, paper and films, and four rubber sheets in different thickness were used.
For each sample, a hanging length L, which demonstrated that the Hamburger's drape coefficient was constant, was sought by maintaining the ratio between the hanging length and the disc radius at 1 : 1.
We examined whether the similarity rule of :
L/L'=3√EI/W/3√EI'/W'
L : bending length (cm)
EI : bending rigidity (g. cm)
W : weight (g /cm2)
might be applied when Hamburger's drape coefficients of those samples were constant. The results of the test were as follows ;
1. The similarity rule was not established for the 15 samples of different materials.
2. The similarity rule was established for the four types of rubber sheets. It was also found that the number of nodes on the rubber sheets became equal.
3. From those tests it was concluded that the similarity rule can be established for the same marterial and that the presence of an equal number of nodes was related to the establishment of the similarity rule.View full abstractDownload PDF (3195K)
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