| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a check valve capable of sufficiently suppressing mixing of air in a container even when an impact is applied to the container, and capable of stably maintaining the superior discharging property of the content. <P>SOLUTION: The check valve 10 is integrally formed of a rubber material, and includes a cylindrical body 1 having openings 1a and 1b at both ends, a lid 3 arranged to close one opening 1a of the body 1, and a hinge 5 for connecting the body 1 and the lid 3 to each other, wherein the lid 3 has a projection 3a on its side face 3b, the projection abutting on the peripheral edge portion of the opening 1a of the body 1. <P>COPYRIGHT: (C)2012,JPO&INPIT |
