There are spinning frames in existence which package filling yarn directly on quills rather than ring tubes.The productivity of this ring frame is limited and hence economics must be considered.
英
美
- 但在卷纬过程中,在一段时间内,纱层只包覆纬管的一部分,一段管纱卷绕完成后,往复导纱运动进入到纬管的下一区段。