| 摘要 |
<p>In a bobbin of synthetic material for winding up textile yarn or other filamentary material, consisting of acylindrical tubular core and two separately pre-fabricated flanges each having an axially extending tubulure which is introduced into the corresponding opening of core tube and maintained there by a mortice fitting, the tubulares each have guide zones extending along their axial length tightly engaged by friction in the tubular core, as well as flexible axially directed zones provided with locking catches facing apertures provided in the tubular core.</p> |
