Container

Abstract

The present invention has an object to provide, in a container having packing to be used in an environment which produces the difference in the air pressure inside and outside the container due to air transportation and the like, with a configuration that prevents the containment of a negative pressure inside the container. By means of using packing with superior adhesion provided with minute uneven shapes at one or more places of the packing, a container can be obtained which exhibits airtightness in an environment not having a difference in the air pressure inside and outside the container, and which will not cause containment of a negative pressure inside the container at the time of the ambient air pressure fluctuations, for example during the above-mentioned air transportation and the like. Furthermore, the same effect can be obtained even if a minute uneven part is provided at one or more places on the surface of the container main body or the cover that makes contact with the packing.

What is claimed is:  
     
         1 . A container having a container constitution in which packing is interposed between the container main body and a cover so as to establish a seal therebetween; wherein a minute uneven part is provided at one or more parts on the surface of the container main body or of the cover with which the packing comes into contact, or wherein a minute uneven part is provided at one or more parts on the surface of the packing which comes into conntact with the container main body or the cover.  
     
     
         2 . The container according to  claim 1 , wherein the minute uneven part is either a narrow groove, a protruding rib or a protuberance.