The Journal of Silk Science and Technology of Japan
Online ISSN : 1881-1698
Print ISSN : 1880-8204
ISSN-L : 1880-8204
Effects of reeling conditions on physical properties of silk reeled by the “cocoon filament entangled” method
Masaaki OkajimaHideaki MorikawaMikihiko MiuraShigeto Shimizu
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2011 Volume 19 Pages 31-36


The aim of this study was to analyze the relation between reeling conditions and the physical properties of raw silk yarns reeled by the “cocoon filament entangled” method. Tension tests showed that certain properties of the raw silk yarns were not affected by interactions among several reeling factors. But properties were affected by individual factors of cocoon cooking time, rotor rotation speed, and reeling speed, which influence the interlacing of yarns. These factors and cocoon numbers greatly affected the fineness of reeled raw silk yarns. A significant difference is observed when the fineness of the raw silk yarn is correlated with the various cocoon-cooking time. The fineness depended on the ratio of sinking cocoons to floating cocoons. Raw silk yarns reeled by this method gave silk threads with a very soft, rich feel. (E-mail:

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© 2011 by The Japanese Society of Silk Science and Technology
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