| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an open valve for a container for packaging, which capable of preventing any white turbid phenomenon or cracks, and preventing generation of any residues in the container. <P>SOLUTION: The open valve 20 formed in a container 10 for packaging includes a substantially U-shaped valve part, a connection part to connect the valve part to the container 10 for packaging side, and small arc-shaped parts 23 which are located on both sides of the connection part and have the radius smaller than that of a fore end arc part of the valve part. <P>COPYRIGHT: (C)2008,JPO&INPIT |
