ABSTRACT

The range of single fiber length in both white and brick red eri cocoons is very high due to inactivity of Filipi’s gland of silkworm along with open structure of cocoons’ shells. This wide range can be reduced by staple cutting process after cocoons’ opening. The average fiber length is improved with more value of staple cut length. Due to staple cutting, short fiber generation occurred and descending trend was noticed with increase of staple cut length. Hauteur value is enhanced with increase of staple cut length and significant difference exists between 100 mm and 200 mm staple. Similarly, higher proportion of longer fiber percentage was revealed with increase of staple length. Since there is restriction of long fiber up to 200 mm for setting of rollers in drafting zone of speed frame and ring frame in case of long staple spinning, length can be set between 100 mm and 150 mm. Due to difference in measurement principle, the average fiber length assessed by BISFA oil plate method and Hauteur and Barbe evaluated by Almeter is not similar. So, expressions have been derived for prediction of Hauteur as well as Barbe from fiber length measured by BISFA oil plate method.

摘要

由于蚕的Filipi腺不活动以及茧壳的开放结构，白色和砖红色eri茧的单纤维长度范围非常高。这个范围很广，可以通过开茧后的切钉工艺来减少。平均纤维长度随着短切长度值的增加而提高。由于短纤维切断，短纤维产生，随着短纤维切断长度的增加，出现下降趋势。Hauteur 值随着主食切割长度的增加而增强，100 mm 和 200 mm 主食之间存在显着差异。类似地，随着短纤维长度的增加，较长纤维百分比的比例更高。由于在长纤维纺纱情况下，在提速机和环锭机的牵伸区设置罗拉的长纤维限制在 200 毫米以下，长度可以设置在 100 毫米和 150 毫米之间。由于测量原理不同，BISFA油板法评估的平均纤维长度与Almeter评估的Hauteur and Barbe评估的平均纤维长度并不相似。因此，根据 BISFA 油板法测量的纤维长度，推导出了预测 Hauteur 和 Barbe 的表达式。