摘要 |
PROBLEM TO BE SOLVED: To surely fit foot fins to the feet and to enhance propulsion efficiency by forming the fins to a bag shape to cover only the parts forward of the arch and instep portions of the feet of a wearing person and molding the inner side thereof as a female mold shape so as to meet the footprint of the wearing person and forming the outer side to the shape meeting the foot insertion part. SOLUTION: The foot fin 4 utilized in water, etc., has a fin part 1, the foot insertion part 2 and a fixing belt 3. The foot fin is provided with a sock body 6 for fixing to such a bag shape as to cover only the portions forward of the arch and instep 8 portions of the wearing person's foot. The inner side thereof is formed to the female mold shape so as to meet the footprint of the wearing person. On the occasion of molding the inner shape of the body 6, a low temperature thermosetting synthetic resin material 9 having a shape memory function is packed between the wearing person's foot and the foot insertion part 2 and the footprint is taken and thereafter, the footprint is put as it is into a low- temperature oven and is thermally cured by heating. As a result, the foot is made to surely fit to the foot fin 4 and the rapid dealing of the foot fin 4 with the movement of the foot is made possible.
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