POLYLACTIC ACID-BASED FILAMENT NONWOVEN FABRIC AND POLYLACTIC ACID-BASED FILAMENT

摘要

PROBLEM TO BE SOLVED: To provide a polylactic acid-based filament nonwoven fabric which can well be subjected to a partial thermocompression treatment, even when a polylactic acid-based polymer is used, and is hardly peeled in the thickness direction, and to provide polylactic acid-based filaments.;SOLUTION: This nonwoven fabric comprises filaments which comprise a polylactic acid-based polymer, have single phase cross sections, respectively, and are partially thermocompression-bonded to each other. The filaments forming the nonwoven fabric have a temperature-falling crystallization temperature Tcc, when melted at a temperature-up speed of 10°C/min and then measured with a differential thermal analyzer at a temperature-falling speed of 10°C/min, have the temperature-falling crystallization temperature Tcc of 90 to 110°C, and have a crystallization calorie ΔHexo of ≥10 mJ/mg.;COPYRIGHT: (C)2003,JPO