| 摘要 |
PROBLEM TO BE SOLVED: To provide a slit valve in which a valve head is not counterrotated inwardly at the time of restoring a container in the case the volume reduction amount by pressing the container is increased. SOLUTION: A slit valve D is held on the given position by an inner cap C and a cap B and installed on a container cap section 1, and the slit valve D is formed of a valve base and a valve head 51, and the valve base 50 is provided with a cylindrical wall 53 formed standing upright so that the valve base can be stood up from an annular base plate 52 and its inner peripheral edge. The valve head 51 is provided with an orifice forming wall 56 from a slit 62, a holding cylindrical wall 57 having an inclined wall 56 and a vertical wall 66 continued to a peripheral edge 64 of the orifice forming wall 56 and a thin-wall connecting wall 58 inclined upward obliquely from the lower end of the vertical wall 66 of the holding cylindrical wall 57 and connected with the peripheral wall of the valve base. |
