Abstract: Polyamide fiber has been widely used in many kinds of apparel fabrics benefiting from its excellent characteristics. With the popularity of fashion, leisure and sports, polyamide fiber has seen good market opportunity and big technical progress in its dyeing and finishing. With the constant improvement of consumption level, the rising of enterprise cost and the increasing environmental pressure, there are additional requirements for polyamide dyeing, such as high color fastness, energy conservation, emissions reduction and cost control. These new requirements have become important considerations in polyamide dyeing, and are pushing forward the development of related dyeing technology.

Key words: polyamide dyeing; one bath dyeing of polyamide/cotton; shortened process; high color fastness