| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a packaging container with a simple and costless releasing valve, which prevents water vapor generating from contents by heating from wetting a part of the contents near underneath of the releasing valve after the water vapor is cooled down into water drop near a throughhole. <P>SOLUTION: The packaging container has the releasing valve comprising the throughhole and an adhesive label for covering and sealing the throughhole. The adhesive label is peeled off by the increasing inner pressure of the container upon heating the container, and can be used again to seal the throughhole after releasing the inner pressure. <P>COPYRIGHT: (C)2004,JPO |
