| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for melt spinning hardly causing an increase in filtration pressure due to the production of a copper compound or metallic copper insoluble in a molten polyamide and deteriorating the yarn manufacturing properties by stably and electrochemically inactivating the surface of a pack member at a low cost. SOLUTION: This apparatus for melt spinning in which a coating film comprising an oxide, a nitride or a carbide of any metal of Si, Ti, Zr, Al, W, B, Ta and Ge and/or a heat-resistant resin is formed in a part thereof to be brought into contact with a molten polyamide is used when carrying out the melt spinning of a polyamide containing a copper salt. The coating film is composed of, e.g. at least one compound selected from the group consisting of SiO2 , TiO2 , ZrO2 , Al2 O3 , SiC, TiN, TiCN and TiC, a polyorganosiloxane or a polyimide. |
