| 摘要 |
<p>The present invention discloses a combined and spun string which expands the contact space between the string and a pulling finger by forming a three-dimensional curve on the surface to provide an increased traction force and a manufacturing method thereof. The combined and spun string includes: a core thread formed to be extended; a first sheath thread wound spirally on the outer periphery of the core thread; and a curved thread wound spirally on the outer periphery of the core thread with the first sheath thread while being intertwined and coupled to multiple second sheath threads. The combined and spun string can implement a pleasing exterior with the curves formed on the surface and expands the contact area with the finger to improve the usability.</p> |
