Device for spraying powdery chemical agent and process for spraying powdery chemical agent

A device for spraying powdery chemical agent, the device comprising:

• a container body having an upper end opening;
• a cylindrical body installed in a lid body covering the upper end opening, both ends of the cylindrical body facing an interior and an exterior of the container body;
• a powdery chemical agent that is a chemical agent itself, or in which a chemical agent is impregnated or mixed with a powder, the powdery chemical agent being contained in the cylindrical body;
• and
• sealing films that seal the both ends of the cylindrical body in which the powdery chemical agent is contained, respectively,
• wherein the sealing film for sealing the other end part of the exterior side of the container body in the both ends of the cylindrical body is made to have a film strength equal to the sealing film for sealing one end part of the interior side of the container body or such that the sealing film for sealing the other end part is easily broken a little bit rather than the sealing film for sealing the one end part;
• and
• wherein a reactive gas is generated within the container body to break the sealing films.

A method for splaying powdery chemical agent, the method comprising the steps of:

• generating a reactive gas within a container body having an upper end opening;
• mounting a lid body, in which a cylindrical body is installed, to the upper end opening of the container body such that both ends of the cylindrical body face an interior and an exterior of the container body, a powdery chemical agent that is a chemical agent itself, or in which a chemical agent is impregnated or mixed with a powder, being contained in the cylindrical body, and at least end part at an interior side of the container body in both ends of the cylindrical body being sealed by a sealing film;
• and
• breaking the sealing film by a gas pressure of the reactive gas reaching a prescribed value or more, thereby spraying and diffusing the powdery chemical agent contained in the cylindrical body.