| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot-air balloon preventing contamination of the natural environment and not required to be collected after being flied.SOLUTION: A hot-air balloon has the following structure: an opening 2 of a bag-like balloon body 1 made of paper faces downward; a ring-like frame body 4 is set up to an opening end part 3 to be maintained in an open state; a heating portion 6 is mounted on the frame body via an attachment member 5 while locating at the center of the opening 2; the bag-like balloon body 1 is made of water-disintegrable or water-soluble paper; the frame body 4 is formed of a paper core 7 made of water-disintegrable or water-soluble paper; and the attachment member 5 is formed of incombustible yarn or incombustible twisted paper. |
