| 摘要 |
PROBLEM TO BE SOLVED: To provide a tire condition monitor enhanced in a gas barrier property and moisture-proof, compared with those of conventional one, and a manufacturing method therefor. SOLUTION: A circuit board 22 is sealed with an urethane resin in this tire condition monitor 20 of the present invention. The urethane resin has a fine resin cross-link network, compared with a silicone resin used as a board protection resin in the prior art, allowing little passing-through of sulfur gas and moisture to enhance the gas barrier property and moisture-proof, compared with those of conventional one. In this manufacturing method for the tire condition monitor 20 of the present invention, a prebaking process is carried out before executing a board protection process coating the circuit board 22 with the urethane resin, and the moisture contained in the circuit board 22 is thereby evaporated to protect surely the circuit board 22 coated with the urethane resin from moisture. COPYRIGHT: (C)2008,JPO&INPIT
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