Patent attributes
A seat pad and a method for manufacturing the same are provided, wherein molding failure is prevented at the periphery of a horizontal groove. In the seat pad, a groove structure 7 for containing a part of a seat cover material is provided on a seat surface for seating. At least a part of the groove structure is formed as a horizontal groove which extends in a horizontal direction. The seat pad is manufactured by foam molding in a mold with the seat surface maintained to face in a downward direction, and a first end of the seat surface, in terms of a longitudinal direction of the seat pad which crosses the horizontal direction thereof at right angle, positioned lower than a second end thereof. The seat pad has at least one concavity 10 positioned between the first end and the horizontal groove, so as to face the horizontal groove.