| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plastic-made cap which, even when used for a vial having a large dimensional error like a glass-made vial, to say nothing of a plastic-made vial, can absorb the dimensional error of the glass-made vial to tightly hold a plug. <P>SOLUTION: This cap C for a vial is used for preventing the plug body B sealing an opening A1 of the vial A from slipping out. The cap C is composed of a top surface portion C2 having an opening C1 at the center, and a cylindrical skirt portion C3 extending downwardly from an outer circumference of the top wall portion C2 and is open at a lower end thereof. The inner diameter (a) of a skirt portion C3 is set greater than the outer diameter b of the lip A2 of the vial A. On an inner wall of the skirt portion C3, plural ribs C4 are formed in a direction perpendicular to the top surface portion (C2). <P>COPYRIGHT: (C)2009,JPO&INPIT |
