如何提高自动缫生丝断裂伸长率

How to Improve Breaking Elongation Rate of Raw Silk in Automatic Reeling

结合重庆地区自Ｄ３０１Ａ自动缫丝机投产以来，生丝质量总体水平提高，但断裂伸长率却有所下降的现状，通过对影响生丝断裂伸长率的三大主要因素：生丝的含胶量、缫丝张力、生丝回潮率分别作了较为详尽的分析。提出：改善蚕品种；加强复摇现场湿度管理，保证丝片回潮率达到一定范围；改进缫丝工艺条件；规定并减小缫丝张力；适当使用复摇助剂，增加丝条柔软性等措施，生丝的断裂伸长得到有效提高。

Targeting the widespread decline in raw silk breaking elongation rate though an improvement in its overall quality in Chongqing area since it used automatic reeling machine D301A,detailed analyses are made on such major factors as sericin content in raw silk,reeling tension and raw silk regain affecting the breaking elongation rate,and some measures to improve the elongation rate are proposed,e g improving silkworm races,intensifying humidity control in rewinding workshop to ensure a certain regain for skein silk,improving silk reeling conditions,lowering reeling tension,using appropriate rewinding agent to soften strand silk.