It consists of the production manner of the poly lactic acid type long fiber nonwoven fabrics and the long fiber of the haploid profile which consists of

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