This report is related to the development of the novel thermal functional fibers that generates the heat by moisture adsorption.Novel fibers were prepared by introducing amino group into acrylic and modacrylic fibers available in the market. The results are as follows.
(1) Modified acrylic and modacrylic fibers, especially Acrylic-D, Acrylic-B and Modacrylic-X retained more or less good fibrous form.And showed 2 to 3 times exothermic value as large as wool fibers .
(2) Although these modified acrylic and modacrylic fibers showed comparable amount of exothermic value by moisture adsorption each other, the extent of coloration of the fibers remarkably differed depending on copolymer component of their molecule and reactivity to amino group.
(3) Modacrylic-X which contains halogenated compound as copolymer components reacted well with triethtylenetetramine, and the modified fiber showed the largest exothermic value of moisture adsorption .

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To evaluate dynamic drape behavior of fabrics, a testing device to measure dynamic drapability was designed and new adequate parameters which can represent dynamic drapability were defined and the stability of those parameters were discussed. Following conclusions were obtained.As the revolution of fabric increases, fabric overhangs and the projected area changes in three stages.Dynamic drape increase coefficient ; D_d, which shows the degree of fabric overhanging with revolution speed, is defined as a parameter of dynamic drapability . The parameter is a slope at the 2^nd stage.As the effect of airflow is larger for rotating fabrics at higher revolution speed, dynamic drape coefficent at 200 rpm;D₂₀₀, is defined also as a parameter of dynamic drapability .Both the dynamic drape increase coefficient and the dynamic drape coefficient at 200 rpm showed high accuracy and reproducibility.

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The authors have already conducted a research work on a rapier loom servo control weft inserting mechanism.Based on the results of the research work, we have reported that the mechanism is effective in reducing the weft tension and stabilizing the weft insertion.In terms of its control performance, however, this mechanism failed to perform satisfactorily due to the limited control capability of the PI control method used in it.
Accordingly, the authors conducted a further research work on a similar weft inserting mechanism to improve its control performance by incorporating a “Modified Repetitive Control with Corrected Dead Time”, which the authors have already proposed as an improved control method, into it as its control system.In the research process, the authors studied the specific method for incorporating the “modified repetitive control with corrected dead time”into the weft inserting mechanism, and investigated its control performance both through simulation and experimentation.
The results of the simulation were in good agreement with those of the experimentation, proving that the control method incorporated into the weft inserting mechanism, although not effective in improving its control performance in its transient-state period immediately after its startup, is highly effective in providing it with excellent control performance during its subsequent steady-state period.With regard to improvements in the control performance of the weft inserting mechanism during its transient-state period, we presented specific measures for such improvements that are considered to be feasible and confirmed their effects through simulation.

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To obtain fundamental knowledge for improving the beauty of tights of flesh color types, we conductedmeasurements of SD method for visual impression and of optical properties including color, transparency, and distribution of step-luminance using three kinds of pantyhose, sheer, kohhen, and zokki, which differ in yarn structure, and three kinds of tights which differ in yarn thickness as samples.Two experiments were conducted, the one is individual wearing experiments that a subject wear only a pantyhose or a tights individually, and the other is superimposed wearing experiments that a subject superimpose a pantyhose on a tights.The obtained results are as follows : In the individual wearing experiments, pantyhose was beautiful but tights used in this experiments was not beautiful, especially sheer pantyhose was most beautiful among the three kinds of pantyhose.In the superimposed wearing experiments, when a zokki pantyhose superimposed on a tights, they obtained good glossy feeling.There were no difference between pantyhose and tights in color value and transparency.There were difference between the individual wearing and the superimposed wearing in the photographs and graphs of the distribution of step-luminance.

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