| 摘要 |
PROBLEM TO BE SOLVED: To provide a polylactic acid-based filament nonwoven fabric that has all of superior strength, elongation and heat resistance even though using a polylactic acid-based copolymer therein.SOLUTION: The polylactic acid-based filament nonwoven fabric uses a core-sheath type conjugate fiber as a constituent fiber, in which a polylactic acid-based polymer A is arranged in a core part and a polylactic acid-based polymer B is arranged in a sheath part respectively, and melting points of both of the polylactic acid-based polymer A and the polylactic acid-based polymer B are 160°C or higher, and is formed by partially thermocompression-bonding the core-sheath type conjugate fibers. The polylactic acid-based polymer A and the polylactic acid-based polymer B in the core-sheath type conjugate fiber satisfy specific physical properties. |
