摘要 |
<P>PROBLEM TO BE SOLVED: To provide a firework shell safely manufactured at a low cost while reducing the waste of a shell skin after shooting and to make blooming of fireworks on the water more beautiful. Ž<P>SOLUTION: The firework shell is composed of a bursting charge 3, stars 4 and shell skins 5-7. The shell skins 5-7 are water soluble paper. Powder is enclosed in the water soluble shell skins 5, 6 to form one firework shell, and then hemispherical shell skins 7 smaller in radius than the shell skins are adjusted to hold the firework shell from the upper and lower sides to prepare the firework shell. Spaces are thereby formed inside the respective shell skins, and air gets into the spaces. When the firework shell is allowed to float on the water, buoyancy occurs, and the firework shell can bloom into a more beautiful semicircle. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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