Air passage wall material, and the air passage plate for a closure panel and a server rack server rack using the same

A air passage wall member for blocking the server rack exhaust heat, can be easily adjusted in length, low thermal conductivity, is unlikely to adhere dust and lightweight while having sufficient strength to build in a certain material. And A polyester fiber 11, the multiple fibers 12 were mixed, polyester fiber preform 5 which is formed in the heated compressed to plate in the thickness direction having an outer peripheral member 16 and the inner core member 15 Yes and, a polyester film, aluminum foil, and the surface layer 2 consisting of either a nonwoven fabric having on both surfaces, the outer peripheral member 16 has a melting point comprised 110 ° C. or higher 0.99 ° C. or less of the thermoplastic resin, the time of the heat compression , using air passage wall material which fibers are thermally bonded by the peripheral material is melted at crossing points of the multiple fibers. .FIELD 1