POLYAMID HOLLOW FIBER HAVING AN SUPERIOR COLORING PROPERTY AND METHOD FOR MANUFACTURING THE SAME

摘要

A polyamide system hollow fiber is provided to have a superior color rendering property and a good spinning work ability and a uniform property and not to block an adsorbing hole by regularly maintaining a temperature and intake pressure in a hood. A polyamide system hollow fiber is made of the basic dye salting type copolyamide including a sulfonic acid group. The polyamide system hollow fiber comprises a hollow in a section and is manufactured by using the basic dye salting type copolyamide including a sulfonic acid group.