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AssigneeAsahi Kasei Kabushiki Kaisha
InventorsYusuke Yamada, Chie Okamura, Takuya Matsumoto, Rumina Obi, Kazufumi Kato
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The present disclosure 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.
A method for producing the biodegradable nonwoven fabric for thermoforming comprising fibers of a polylactic acid-based polymer, wherein the basis weight of the biodegradable nonwoven fabric is 20 g/m2 to 350 g/m2, the method comprising a step of performing a constant-length heat setting over the range of 50° C. to 160° C., wherein before the constant-length heat setting, a storage or aging step is carried out at 30° C. to 50° C. for 72 hours to 720 hours.
A method for producing the biodegradable nonwoven fabric for thermoforming comprising fibers of a polylactic acid-based polymer, wherein the basis weight of the biodegradable nonwoven fabric is 20 g/m2 to 350 g/m2, the method comprising the following steps:
Dependencies are inferred from the claim text.