Melt spinneret and a method of manufacturing the same, as well as melt spinning method using the same

摘要

PROBLEM TO BE SOLVED: To provide a melt-spinning nozzle capable of carrying out spinning, without using a melt-spinning nozzle modifying agent consisting mainly of polyorganosiloxane, and having a melt-spinning nozzle surface and spinning holes excellent in release properties, heat resistance, and corrosion resistance, to provide a method for producing the same, and to provide a melt-spinning method.;SOLUTION: This melt-spinning nozzle is used in melt-spinning a thermoplastic polymer, wherein at least a part of the nozzle surface including the spinning holes of the melt-spinning nozzle is formed out of a vapor deposition film, a contact angle of the vapor deposition film to water is 65-115, and a hardness (Vickers hardness at ordinary temperature) of the vapor deposition film is 1,500-6,000.;COPYRIGHT: (C)2005,JPO&NCIPI