Can container

Abstract

A can container, wherein an easily breakable part broken when an internal pressure in the can container abnormally rises and the can container is deformed so that a dome part is projected to the outside of the can container is formed on the outer surface side of the dome part positioned just near the outer peripheral edge part of the dome part continued to caulking parts. For example, when the internal pressure in the can container is abnormally raised by heating, and the dome part is inverted from the outer peripheral edge part of the dome part of a bottom cover and deformed so as to be projected to the outside of the can container, the easily breakable part is broken, and the contents in the can container is released from the can container. Thus, even if the internal pressure abnormally rises, degassing can be performed without allowing a part of the can container to be blown off.

Description

technical field [0001] The present invention relates to a can container such as an aerosol can filled with contents. Background technique [0002] Conventionally, an aerosol can filled with a propellant which is a high-pressure gas has been used. When the aerosol can is thrown into a fire or left at a high temperature for a long time, the pressure inside the can container (container) increases abnormally due to the thermal expansion of the propellant. In this case, the seam between the can body and the bottom cap of the tank container, or the mounting portion between the can body and a mountain cap may be damaged, and the bottom cap or the top cap of the tank container may be knocked off. In order to prevent the explosion of the tank container due to such a pressure rise, a weakened portion is formed, and when the internal pressure of the tank container exceeds a certain value, cracks are generated by deformation to release the internal pressure. An example of such a tank ...

AI Technical Summary

Problems solved by technology

[0005] However, in the invention described in JP-A-47-7686, the seam sealability is not stable because the seam of the metal can container is provided with scored lines.

Therefore, although it is a tank with normal internal pressure, the content or propellant may leak from the seam, or the score line may be broken due to the score line damage during the formation of the seam part, vibration shock during distribution, etc. Then leak the contents or propellant from the disconnected part

In addition, when the tank container is accidentally dropped, the seam may come into direct contact with the floor, and in this case, the scored lines formed on the seam are likely to be broken due to the impact of the drop.

As a result, there is a possibility that the contents may be released at times other than the high internal pressure when the engraved line should be broken.

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