| 摘要 |
To reduce manufacturing cost of an extruding container, a female thread member ( 5 ) integrally has an outer tube ( 5 a) and an inner tube ( 5 b) with an annular space ( 5 s) between them being open to one side in an axial direction, and the inner tube ( 5 b) has a female thread ( 5 e) formed on an inner peripheral surface from one side and to extend in the axial direction and slits ( 5 n) extending in the axial direction and being open to one side, while a core pin including a male thread corresponding to the female thread ( 5 e) and a protruding portion corresponding to the slits ( 5 n), is drawn out from an outer mold after a middle mold having a convex portion corresponding to the space ( 5 s), whereby the core pin can be drawn out without breaking the female thread ( 5 e) as the inner tube ( 5 b) is expanded by the slit ( 5 n).
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