In the process of reeling the silk filament from the cocoon, the outer and inner layers are discarded as waste. The sound parts of the cocoon are wound on to reels as single filament and then assembled into multiple - filament yarns of various types.

• 在从蚕茧上将蚕丝卷绕下来的过程中,蚕茧的内外层会被作为废物丢掉,蚕茧的主体部分则以单丝方式卷绕到线轴上,然后并合成不同规格的复丝纱线。