BIODEGRADABLE NONWOVEN FABRIC

• Main Authors: MATSUMOTO, TAKUYA, YAMADA, YUSUKE, OBI, RUMINA, OKAMURA, CHIE, KATO, KAZUFUMI
• Format: Patent
• Language: English; French
• Published: 19.04.2018
• Subjects: BRAIDING; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; NON-WOVEN FABRICS; TEXTILES; TRIMMINGS; WADDING

The purpose of the present invention is to provide a nonwoven fabric which is biodegradable, and also has high elongation, high heat stability, and excellent formability. The present invention provides: a biodegradable nonwoven fabric for thermoforming, the biodegradable nonwoven fabric being composed of a fiber of a polylactic acid-based polymer, and having a basis weight of 20-300 g/m2, preferably, a biodegradable nonwoven fabric characterized by being composed of a long fiber of a polylactic acid polymer, having an MD-direction elongation of 50% or more at 120°C, and having an MD-direction dimensional change rate of ±4% or less at 80-140°C as determined by thermomechanical analysis; a method for producing a molded body by using said biodegradable nonwoven fabric; and a method for molding a biodegradable beverage extraction container, the method being characterized in that the molded body has an MD-direction elongation change rate of 4% or less, as determined by thermomechanical analysis (TMA) under a load of 0.05 N/2 mm at 30-100°C.