The pupa protein fiber, a blended spun fiber with viscose and pupa protein, is dyed with double- group reactive dyes, and the dyeing conditions are tested emphatically.
由粘胶和蚕蛹蛋白混纺而成的蚕蛹蛋白纤维，采用双活性基活性染料染色，对染色工艺条件作了重点试验。
3
Scouring cannot be carried out to the spun-dyed cotton flannel fabric before dyeing. The problems were lower washing fastness and staining.