Molded body with projected part, dry mold for manufacturing the molded body, and method and device for manufacturing the molded body

A method of producing a molded article which comprises a papermaking step in which a slurry containing fibers dispersed in a liquid is made into a wet fiber preform by use of a papermaking mold, a dewatering step in which said wet fiber preform is dewatered using at least one fluid passageway, and a drying step in which said dewatered undried fiber preform is dried by use of a drying mold, wherein said drying mold has a drying part the shape of which fits said undried fiber preform and which has a plurality of narrow fluid passageways of slit form which are formed directly in said drying part and interconnect said drying part and the outside of said mold, and said dewatered fiber preform is put into said drying mold, and pressed and dried to obtain a molded article having narrow ridges on the outer surface thereof at positions corresponding to said passageways.