| 摘要 |
PROBLEM TO BE SOLVED: To provide an indoor rocket firework suitable for indoor use. SOLUTION: In the indoor rocket firework, powder 5 for ignition and development and stars 7 are packed in a shell 3 in a container form and a fuse 9 is provided with one end 9a set into the shell and the other end 9b exposed outside of the shell and the whole rocket firework is made small to suit for indoor use. For the powder for ignition and development, powder composition having strong explosive power consisting of oxidizer and combustible materials is prepared and metal powder is mixed with the powder composition so that the explosive power is suppressed and combustion temperature is raised. Powder 11 for coating the star similar to the powder for ignition and development is coated on a surface of the star. The star may include rubber polymer which is made by reaction of liquified polybutadiene or liquified polypropylene with di-isocyanate compound as curing agent. The star may be a decorative material such as a piece of paper. COPYRIGHT: (C)2007,JPO&INPIT
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