Title:
METHOD FOR CONTINUOUSLY PRODUCING BIODEGRADABLE FIBER MATERIAL CONTAINING INORGANIC FILLER PARTICLES USING WET SPINNING, AND COTTON-LIKE BONE REGENERATION MATERIAL PRODUCED WITH SAID METHOD
Document Type and Number:
WIPO Patent Application WO/2023/228905
Kind Code:
A1
Abstract:
Provided is a method for producing biodegradable fibers that contain inorganic filler particles using wet spinning, wherein a spinning solution, which is produced by dissolving into a good solvent a mixture of inorganic filler particles and a biodegradable resin mixed at a weight ratio of 50-80:50-20 and then performing mixing, is filled into a syringe of a wet spinning device and then injected into a collector container by being pushed out downward from a discharge opening of an injection needle. A first poor solvent which has a dissolution parameter value having a small degree of separation with respect to the good solvent, and a second poor solvent which has a greater specific weight than the first poor solvent and which has a dissolution parameter value having a large degree of separation with respect to the good solvent fill the collector container in two layers vertically. The spinning solution pushed out from the discharge opening of the injection needle enters into the first poor solvent in the collector container in the form of a fiber by the weight of the spinning solution itself, and then continuously enters the second poor solvent filled beneath the first poor solvent. The spinning solution in fiber form which has entered the second poor solvent becomes a continuous long fiber and is suspended and accumulated in a cotton-like form at the bottom of the collector container.
Inventors:
KASUGA TOSHIHIRO (JP)
MATSUBARA TAKASHI (JP)
KUMANO MASAHIRO (JP)
MATSUBARA TAKASHI (JP)
KUMANO MASAHIRO (JP)
Application Number:
PCT/JP2023/018963
Publication Date:
November 30, 2023
Filing Date:
May 22, 2023
Export Citation:
Assignee:
NAGOYA INST TECH (JP)
ORTHOREBIRTH CO LTD (JP)
ORTHOREBIRTH CO LTD (JP)
International Classes:
D01D5/06; A61L27/18; A61L27/46; D01F6/62; D01F6/92
Domestic Patent References:
| WO2019054970A2 | 2019-03-21 |
Foreign References:
| JP2018019944A | 2018-02-08 | |||
| JP2016509028A | 2016-03-24 |
Attorney, Agent or Firm:
NINOMIYA Katsuyuki (JP)
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