CUSHION BODY OF SEAT CUSHION AND METHOD OF MANUFACTURING THE CUSHION BODY

An object of the invention is to provide a cushion body of a seat cushion that can be easily reinforced in low cost, to provide a method for manufacturing such a cushion body and to provide an apparatus for manufacturing such a cushion body. A cushion body 10 of a seat cushion has a main part and a side part generally corresponding to a main part and a side part of the seat cushion. The cushion body 10 comprises a foamed body 11 formed in a shape generally corresponding to an outline of the cushion body 10, an air-permeable material 12 fixed to the cushion body 10 and an impregnation layer 13 that serves to reinforce a portion of the cushion body 10 where the air-permeable material 12 is fixed to the foamed body 11. The foamed body 11is made of cold urethane foam. The thickness of the impregnation layer 13 has a thickness that can provide a predetermined strength to reinforce a portion of the cushion body 10 where the air-permeable material 12 is fixed to the foamed body 11.