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Volume 24, Issue 11
Displaying 1-7 of 7 articles from this issue
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[in Japanese]1983 Volume 24 Issue 11 Pages 469-471
Published: November 25, 1983
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (362K) -
[in Japanese]1983 Volume 24 Issue 11 Pages 472-480
Published: November 25, 1983
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (1086K) -
Takeshi Yasuda, Kotaro Yokoyama, Tokiko Ijiri1983 Volume 24 Issue 11 Pages 486-491
Published: November 25, 1983
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSA non-sweaty waterproof cloth using the microporous membrane is a new type of clothing material Its waterproofness is due to that water can not penetrate into the small pores of the membrane because the contact angle of water drop against the material is more than 90°. The relation between the water resistance (P) and the pore size (d) can be expressed by P=C/d, where C is a constant. While the moisture permeability is due to that the size of the pore is larger than that of the water vapour molecule. The results of the experiment using the cup method showed that water vapour transferred through the membrane from the side of the higher vapour pressure to that of the lower vapour pressure. The relation between the moisture transmission per area per time (q) and the difference of vapor presure (ΔE) can be expressed by q= KΔE, where K is a constant. This result indicates that the water vapour transfers from the environment to the inside of clothing under certain condition.View full abstractDownload PDF (2513K) -
Naoko Kawai, Yukie Kato, Fujiko Sugiyama1983 Volume 24 Issue 11 Pages 492-496
Published: November 25, 1983
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSAn aesthetic principle in the patterns of clothings was discussed from the view point of impression obtained from the various geometric color designs.
Six kinds of patterns repeating a geometric unit design have been painted in two-, three- and fivetint of color. The painted patterns projected on a video monitor display were evaluated by fifteen terms and analyzed by the semantic differential method. The factor analysis has been made to obtain the impression of geometric patterns. The geometric patterns have been classified by the cluster analysis. Results obtained were as follows:
The visual impressions of geometric color designs are composed of five factors; evaluation, conspicuousness, lightness, modernism and warmth. The color scheme has considrable influence on these factors in comparison with the shape and the number of colors on the pattern.View full abstractDownload PDF (2584K) -
Part 1: Thermal Sensation of Hand in the LiquidSetsuko Ushiwaka, Kazuo Mihira1983 Volume 24 Issue 11 Pages 497-501
Published: November 25, 1983
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe thermal sensation of hands in the water was studied psychologically and following conclusions were obtained:
1) Under the atmospheric temperature of 20°C and 30°C and the water temperature of 4°-30°C, the relationship between thermal sensation value of hands and temperature of the water was obtained. The neutral point of the thermal sensation existed between 28°-29°C. The thermal sensation value was not affected by the atmospheric temperature and a linear relation was observed between the thermal sensation and the water temperature.
2) A difference of the thermal sensation value of hands with a thin plastic gloves of 0.02mm in thickness and bare hands were analyzed by comparing threshold value and just noticeable difference (JND) curve. Two JND curves showed slight difference at the water temperature below 20°C.View full abstractDownload PDF (522K) -
Part 2: Evaluation of the Thermal Insulation of GlovesSetsuko Ushiwaka, Kazuo Mihira1983 Volume 24 Issue 11 Pages 502-505
Published: November 25, 1983
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe thermal insulation of seven kinds of rubber gloves for home-use was compared in the water by means of the human thermal sensation. The human thermal sensation were evaluated by:
1) By determining the point of subjective equivalent (PSE) of the human thermal sensation for hands with and without gloves in the water.
2) By comparing the thermal sensation of two kinds of gloves and scaling it by the Scheffé's paired comparison method.
3) By analyzing the confusion of the thermal sensation for two kinds of gloves using Kruscal's nonmetric multi-dimensional scaling (NMDSCAL) method.
The results obtained showed that PSE method and NMDSCAL method could explain sufficiently the characteristics of the thermal insulation of seven kinds of gloves.View full abstractDownload PDF (2228K) -
Part 1: Thermosetting Behavior of Resins Observed Through Dynamic ViscoelasticityShigeko Nakanishi, Yaomi Kumagaya1983 Volume 24 Issue 11 Pages 506-512
Published: November 25, 1983
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSAs the first step of a wide range of investigations to establish the most adequate curing condition for the most favorable resin finished fabrics, an investigation was carried out to observe the hardening behavior of resins in the thermosetting process.
Torsional Braid Analysis method was applied to observe the viscoelastic behavior to know how the thermosetting proceeded with time at curing temperatures.
Torsionsl rigidity was obtained every 1-2 minutes until it reached the maximum value, from which the time required for sufficient hardening, thermosetting rate constant and apparent activation energy were calculated for resins of melamine, urea and glyoxal types to compare each other. The main results are as follows
1. Among resins of three types, a resin of melamine type showed the lowest thermosetting rate constant and the highest apparent activation energy, while that of glyoxal type showed the highest thermosetting rate constant and the lowest apparent activation energy.
2. It was found that the resins might be only 30-50 % cured under the conventional curing condition for the practical resin finishing process, e.g., curing for 5 minutes at 150°or for 1-2 minutes at 180°C.View full abstractDownload PDF (923K)
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