| 摘要 |
PROBLEM TO BE SOLVED: To provide a bobbin capable of readily producing at a low cost and uniformly pressing in the direction of diameter by shrinkage force of yarn when yarn is dyed, without enlarging in the direction of diameter by centrifugal force when yarn is wound. SOLUTION: This bobbin 1 is obtained by integrally forming many elements 2 in the direction of height, extending in the direction of the bobbin height and mutually arranged at intervals in the circumferential direction of the bobbin so as to form cylindrical shape as the whole and many binding elements 5 arranged at intervals in the direction of bobbin height and binding elements 2 in height direction by a resin. In the bobbin, many through holes 6 are formed between elements 2 and binding elements 5 and each of these binding elements 5 is formed in small cross section and flat shape so that the binding elements 5 can be buckled by shrinkage force.
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