Applicability of forcibly spinning technology to produce a finer silk filament

ABSTRACT

Forcibly spinning method has once shown a potential to enhance tensile strength of Bombyx mori silkworm silk fibers to the level of spider dragline silk. Thus, the tensile data for the forcibly spun silk fibers reported so far were compared with the tensile data for the industrially used hybridized F₁ Bombyx mori silkworms. The forcibly spinning method may be convenient to produce a finer filament, but it was found to be difficult to produce a long and strong filament comparable to the commercial silk fibers. On the contrary, the breeding technology which can reduce the number of molts from four to three by feeding an imidazole compound appears to be the most practical strategy to obtain a finer and stronger silk filament with a length more than 500 m.

摘要

强力纺丝法曾表现出增强家蚕蚕丝纤维抗拉强度的潜力。因此，将迄今报道的强纺丝纤维的拉伸数据与工业上使用的杂交F1ByByxMuli蚕的拉伸数据进行比较。强制纺丝方法可以方便地生产出细丝，但发现很难生产出与商业丝纤维相当的长而强的丝。相反，通过喂咪唑化合物可以减少从四到三的蜕皮数的育种技术似乎是获得长度超过500米的细长的长丝的最实用的策略。

KEYWORDS:

• Forcibly spinning
• three-molt silkworm
• Bombyx mori silkworm
• textile property

关键词:

• 强力旋压
• 三蜕皮桑蚕
• 家蚕
• 纺织性能

Acknowledgments

We thank Dr. Hiroshi Shinbo and Dr. Shigeto Shimizu of the Dainippon Raw Silk Foundation for giving permission to use the line-breeding data.