| 摘要 |
PROBLEM TO BE SOLVED: To provide a moving member for writing instruments, the moving member that is formed of a polycarbonate composition obtained by blending 1-20 pts.wt. of a sliding agent (B) and 0.1-0.8 pts.wt. of sliding auxiliaries (C) to 100 pts.wt. of a polycarbonate resin (A), in which the light transmittance of a forming piece with a thickness of 3 mm injection-molded from the composition and based on JIS K7361 is 80% or more.SOLUTION: A moving member for writing instruments of the present invention has superior transparency and also superior sliding properties. The moving member is superior in the transparency, so that the visibility is never inhibited and user's visual confirmation is not inhibited, even if provided in a barrel requiring the visibility such as ink. Also, the moving member is superior in the sliding properties, and therefore, the moving member is prevented from deteriorating early to cause failure in the moving operation to the utmost, even if the movement operation such as severe knocking operation is repeated, and thereby a uniform operation can be performed highly accurately for a long time. |
