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Title:
BIODEGRADABLE NONWOVEN FABRIC
Document Type and Number:
WIPO Patent Application WO/2018/070490
Kind Code:
A1
Abstract:
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.

Inventors:
YAMADA, Yusuke (1-105, Kanda Jinbocho Chiyoda-k, Tokyo 01, 〒1018101, JP)
OKAMURA, Chie (1-105, Kanda Jinbocho Chiyoda-k, Tokyo 01, 〒1018101, JP)
MATSUMOTO, Takuya (1-105, Kanda Jinbocho Chiyoda-k, Tokyo 01, 〒1018101, JP)
OBI, Rumina (1-105, Kanda Jinbocho Chiyoda-k, Tokyo 01, 〒1018101, JP)
KATO, Kazufumi (1-105, Kanda Jinbocho Chiyoda-k, Tokyo 01, 〒1018101, JP)
Application Number:
JP2017/037058
Publication Date:
April 19, 2018
Filing Date:
October 12, 2017
Export Citation:
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Assignee:
ASAHI KASEI KABUSHIKI KAISHA (1-105, Kanda Jinbocho Chiyoda-k, Tokyo 01, 〒1018101, JP)
International Classes:
D04H3/011; D04H3/14
Foreign References:
JP2011157660A2011-08-18
JP2004263344A2004-09-24
JPH0995848A1997-04-08
JP2000136479A2000-05-16
JP2002177148A2002-06-25
JP5486331B22014-05-07
JP3432340B22003-08-04
JP2000136479A2000-05-16
JPH11131355A1999-05-18
JPH0147581B21989-10-16
JP2015085086A2015-05-07
Attorney, Agent or Firm:
AOKI, Atsushi et al. (SEIWA PATENT & LAW, Toranomon 37 Mori Bldg. 5-1, Toranomon 3-chome, Minato-k, Tokyo 23, 〒1058423, JP)
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