| 摘要 |
PROBLEM TO BE SOLVED: To provide a plate material assembling duct with ease of connection, by restraining the quantity of material used, while securing sealability. SOLUTION: This duct is assembled by joining a soft plate-like base material having the thickness. A joining part of the base material is formed as a structure of meshing a projection part 6 and a recessed part 7 by alternately repeatedly forming the projection part 6 and the recessed part 7 on the joining edge. A width of the projection part 6 of the joining edge is formed larger than a width of the recessed part 7, and the projection part 6 is pressed in the recessed part 7. The base material is formed by laminating a corrugated board 2 being a core material by aluminum foil 3, and sealing the joining part with an aluminum tape 9. The duct is formed by bending the base material in a square cylindrical shape along a ruled line, and a plurality of base materials are joined, and are assembled as a joint of a bending shape of a flow passage, a branching shape or a changing shape of a cross section. COPYRIGHT: (C)2009,JPO&INPIT
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