| abstract |
(57) [Summary] [PROBLEMS] To appropriately inject a predetermined amount of a urethane stock solution into an outer region of a cavity corresponding to an outer support portion of a side support portion. SOLUTION: A second region 17, 1 on the bottom surface of a cavity 14 is provided. 7 are the outer regions 17A, 17A in the longitudinal direction and the inner region 17 B, 17B, the partitioning portions 25, 25 are projected so as to partition the side support portion of the seat pad into an outer support portion facing the pad side end portion and an inner support portion adjacent to the center support portion. Make it possible. The partition walls 25, 25 have upper openings 11a as they go upward. Is formed in the opening defined between the inclined wall 25a and the opening edge of the upper opening 11a, so that the injection is wider than the spout of the injection nozzle 31. The points 30, 30 are defined and the outer area 17 A, 17A so that a suitable injection of the urethane stock solution can be achieved. |