| 摘要 |
PROBLEM TO BE SOLVED: To satisfactorily keep the thickness balance and facilitate the mounting by integrally die molding a plurality of duct bodies by one parison in a position separated from an intended positional relation in the state where the duct bodies are connected in connecting parts, and regulating the duct bodies so as to have the intended positional relation in the connecting parts. SOLUTION: A plurality of duct bodies 111, 112... are die molded by one parison in a position separated from an intended positional relation in the state where the individual duct bodies are connected in connecting parts 12... in order to keep the integral property. Accordingly, the thickness balance of the whole body can be satisfactorily kept. In order to determine the positional relation of the duct bodies, position regulating means are provided on the connecting parts 12..., so that the respective duct bodies 111, 112... can be arranged in the intended positional relation. Further, when the preciseness of the positional relation is necessary, positioning means 17 are provided on the connecting parts 12..., and the molded duct bodies 111, 112... are assembled. According to this, the precision of the duct assembly can be kept high.
|
