BIODEGRADABLE NONWOVEN FABRIC

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 compos...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MATSUMOTO, TAKUYA, YAMADA, YUSUKE, OBI, RUMINA, OKAMURA, CHIE, KATO, KAZUFUMI
Format: Patent
Sprache:eng ; pol
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Beschreibung
Zusammenfassung: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/m, 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.