MANUFACTURING METHOD OF SOLUBLE CONJUGATED HOLLOW YARN

摘要

The present invention relates to a manufacturing method of soluble conjugated hollow yarn, in which a sheath unit is formed of a polyester synthetic resin or a polyamide synthetic resin and a core unit is formed of extractable polymers. The manufacturing method includes a melting step for melting the polyester synthetic resin or the polyamide synthetic resin and melting the extractable polyester synthetic resin and a complex spinning step for spinning the molten polyester synthetic resin or the polyamide synthetic resin to the sheath unit and spinning the extractable polyester synthetic resin to the core unit, wherein the core unit is partially exposed to the outside and hollow yarn with a C-shape cross section is formed. [Reference numerals] (AA) Step of melting;(BB) Step of complex spinning;(CC) Step of producing POY yarn;(DD) Step of producing SDY yarn