Title:
GELATIN HOLLOW FIBERS AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP2020204120
Kind Code:
A
Abstract:
To provide: gelatin hollow fibers which are hardly soluble in water and are suitable for medical use; and a method for producing the same.SOLUTION: Provided is hollow fibers 1 comprising gelatin as a main component, wherein the fibers do not contain a water-soluble polymer or contain more than 0% by mass and 10 mass% or less thereof, do not contain a chemical cross-linking agent, and, even when immersed in cold water of 5°C for 60 minutes, maintain the shape and do not dissolve. The method for producing the gelatin hollow fibers of the present invention comprises: mixing more than 50 mass% and 70 mass% or less of gelatin, 0-10 mass% of a water-soluble polymer, 30 mass% or more and less than 50 mass% of water to obtain an air-liquid mixture of a gelatin-containing aqueous solution; vacuum-defoaming the air-liquid mixture to obtain a spinning solution; and dry spinning by extruding the spinning solution and letting the same pass through a spinning cylinder arranged in a vertical direction; and cutting the fibers at the bottom part where the fibers come out of the heated spinning cylinder. Thereafter, the fibers may be thermally cross-linked.SELECTED DRAWING: Figure 1
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Inventors:
MIYAMOTO KOKI
ISE TOMOKAZU
ISE TOMOKAZU
Application Number:
JP2019113009A
Publication Date:
December 24, 2020
Filing Date:
June 18, 2019
Export Citation:
Assignee:
NIPPON KEORI KK
International Classes:
D01F4/00; D01D5/04
Domestic Patent References:
| JP2012167397A | 2012-09-06 | |||
| JP2012237083A | 2012-12-06 | |||
| JP2020204119A | 2020-12-24 |
Foreign References:
| US20160130729A1 | 2016-05-12 |
Attorney, Agent or Firm:
Patent business corporation Ikeuchi and Partners