| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a well-sealed storage container which does not deteriorate sealability even when frozen at about minus 20°C and does not practically generate dust, etc. compared with conventional well-sealed storage containers. <P>SOLUTION: There are includes: a container body and a synthetic-resin cap externally fit with the container body. The container body has a narrow long tubular bottle opening part, a screw part formed on the outer periphery of the bottle opening part, and a press-fit part above the screw part, wherein the press-fit part is tapered toward the upper side. The inner periphery of the cap has: a screw part fitted together with the screw part of the bottle opening part; a sealing press-fit part on which a taper to be in close contact with the press-fit part is formed; and an O-ring fit with a tapered ring-like recessed groove. The material of the container body and the material of the cap are the materials having the same contraction percentage at low temperature or have a large contraction percentage of the cap so that sealability is not deteriorated even when frozen. <P>COPYRIGHT: (C)2013,JPO&INPIT |
