| 摘要 |
PROBLEM TO BE SOLVED: To provide a fiber including lava powder and/or volcanic ash, and having excellent ability for radiating far infrared rays. SOLUTION: The fiber including the lava powder and/or the volcanic ash is obtained by attaching a large number of the lave powder obtained by pulverizing lava, and/or the volcanic ash to a parent body of a natural fiber or a chemical fiber. COPYRIGHT: (C)2007,JPO&INPIT
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