| 摘要 |
PROBLEM TO BE SOLVED: To provide a light weight duct for an automobile capable of controlling quantity of air flow by increasing rigidity and making breakage during manufacturing not easily occur without increasing the unit weight and thickness of a porous body. SOLUTION: This duct for the automobile is formed out of a laminated body having the porous body 31 laminated and integrated on one surface of a synthetic resin sheet 21 having a large number of through holes 22. The porous body 31 has a coarse structure at a position of the through holes 22 of the synthetic resin sheet 21 then other positions, and is thicker with entering the through holes 22 than other positions. The synthetic resin sheet 21 is put at an inner side of the duct for the automobile and the porous body 31 is put at an outer side of the duct for the automobile to inhibit increase of resistance of a pipe wall when air passes through the inside of the duct for the automobile. COPYRIGHT: (C)2009,JPO&INPIT
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