THE DRAWING OF TEXTILE FILAMENT

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  • 繊維の延伸挙動
  • センイ ノ エンシン キョドウ

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Abstract

In this report, it is attempted to present a general method for analyzing the drawing phenomena of textile filament at drawing process and to apply this method to the analysis of drawing behaviors of polyester and polypropylene fibers.<br>In industrial plant, the drawing of filament is usually done by two rollers whose surface speeds are different from each other. It must be very convenient, if there exists a systematic method by which one oan derive the information of the drawing behavior by industrial machine, from the data of laboratorical measurement. For this purpose the most useful property of filament which can be measured by laboratorical nathod may be the time-elongation curves under constant load. The time-elongation curves of polyester and polypropylene (smectic) undrawn filaments at various temperature were measured.<br>The most ideal drawing system equipped with two rollers may be such a system that the filament is drawn at the constant tension and constant filament temperature. The relationship between the time and space coordinate of material by this drawing system was discussed. Thus the timeelongation curve may be connected to that of the distance-elongation.<br>A real drawing apparatus which consists of this ideal drawing system was designed. From the time-elongation curves under constant load, the drawing behavior of polyester and polypropylene filaments by this drawing apparatus is explained.<br>Finally this report deals with more complicated drawing system where filament is drawn on a hot pin. The calculated draw points favorably agrees with the experimental results obtained.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 24 (8), 366-377, 1968

    The Society of Fiber Science and Technology, Japan

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