| 摘要 |
PROBLEM TO BE SOLVED: To shorten a reaction time, and obtain a molded body, the inner surface of which has a favorable flatness and, in addition, has a high quality, by a method wherein a reaction raw liquid layer stuck onto the inner peripheral surface of a die is heated. SOLUTION: Onto a lid member 11b, which fits to through hole 5b, a pipe member 13b, which passes in and out, is integrally mounted. A sluice valve 15b is mounted to the pipe member 13b. The nozzle 17a of a hot air feeding device 17 for feeding hot air is connected to the outside end part of the pipe member 13b so as to feed the hot air for the predetermined period of time by opening the sluice valve 15b in order to heat the reaction raw liquid layer formed on the inner peripheral surface of a die 2 from its inner surface. At the feeding of the hot air, a sluice valve 15a on the opposite side of the sluice valve 15b may well be opened or closed. By closing the sluice valve 15a for enclosing, a hot air may well be fed with an ambient pressure higher than the atmospheric pressure.
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