Abstract
The mono-filament of synthetic fiber was fed as the core filament under the suitable tension to the have end feeder of reeling machine. In the formation of the compound filament, the cocoon fibers surround the core filament and adhere to it by their sericin. Our purpose is to obtain a filament which has characteristics of both the cocoon fiber and synthetic one.
1) The feed tension of the mono-filament of synthetic fiber may be expressed by the following equation:
where ps: the feed tension of the mono-filament of synthetic fiber pc′: the total unwinding tension on all baves ks: the modulus of elasticity of synthetic fiber kc′: the modulus of elasticity of cooked cocoon fiber a: the denier of synthetic fiber b: the total denier of all cocoon fibers
2) Using 15 denier TETRON as the core, 45 denier compound filament was monufactured. Under the same elongation, its tenacity lies between the tenacity of synthetic fiber and that of raw silk. The compound filament has the same elongation as the synthetic fiber which has smaller one than that of raw silk.
