In general, single spun yarns must be slashed for all the above reasons. Continuous filament usually need adhesive to protect the filaments from breaking. Ply yarns are usually slashed for lubrication and or smoothness.

• 一般说来,由于上述种种原因,短纤维单纱必须上浆。连续长丝纱通常需要粘合剂来保护以防止断头。股线通过上浆,其润滑性能和(或)表面的光滑性能可以得到改善。