| 摘要 |
PROBLEM TO BE SOLVED: To reduce the manufacturing cost of a connecting duct having a main body section and a frame section (clamping case). SOLUTION: The main body section of this connecting duct is formed by heating a foamed PP sheet W. While the main body section is formed, the preformed frame section 132 is bonded to the main body section with an adhesive (primer) applied to the frame section 132 by utilizing the heating heat. Consequently, the frame section 132 can be bonded simultaneously to the main body section at the time of forming the main body section. Therefore, the manufacturing cost of the connecting duct can be reduced, because the manufacturing man-hour of the duct can be reduced.
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