Sheet for vehicle and method for manufacture thereof

Abstract

The vehicle seat S has at least the sitting area 11 and the seat cushion 10 for supporting the sitting area 11 . The seat cushion 10 is formed by using foam as an exterior material in a given form. The backrest 20 for supporting the back area 21 may be molded in the seat cushion at the same time. In addition, the foam may be one selected from the group consisting of PP (polypropylene) bead foam, PE (polyethylene) bead foam, PP foam, PE foam, AS resin(acrylonitrile-styrene resin) foam, EVA (ethylene-vinyl acetate copolymer resin) foam and a urethane foam.

What is claimed is:  
     
         1 . A vehicle seat comprising at least a sitting area and a seat cushion for supporting the sitting area, characterized in that the seat cushion is formed from foam as an exterior material in a given form.  
     
     
         2 . A vehicle seat as claimed in  claim 1  characterized in that said sitting area comprises a pad disposed thereto.  
     
     
         3 . A vehicle seat as claimed in  claim 1  characterized in that said sitting area comprises a concave portion to which the pad is disposed.  
     
     
         4 . A vehicle seat as claimed in  claim 1  characterized in that said foam forming the seat cushion is one selected from the group consisting of PP (polypropylene) bead foam, PE (polyethylene) bead foam, PP foam, PE foam, AS resin(acrylonitrile-styrene resin) foam, EVA (ethylene-vinyl acetate copolymer resin) foam and urethane foam.  
     
     
         5 . A vehicle seat comprising at least a sitting area, a seat cushion for supporting the sitting area, a back area, and a backrest for supporting the back area, characterized in that the seat cushion and the backrest is formed from foam as an exterior material in a given form.  
     
     
         6 . A vehicle seat as claimed in  claim 5  characterized in that said sitting area and said back area comprise pads disposed thereto.  
     
     
         7 . A vehicle seat as claimed in  claim 5  characterized in that said sitting area of the seat cushion and said back area of the backrest comprise concave portion to which the pads are disposed.  
     
     
         8 . A vehicle seat as claimed in  claim 5  characterized in that said foam forming the seat cushion and the backrest is one selected from the group consisting of PP (polypropylene) bead foam, PE (polyethylene) bead foam, PP foam, PE foam, AS resin(acrylonitrile-styrene resin) foam, EVA (ethylene-vinyl acetate copolymer resin) foam or a urethane foam.  
     
     
         9 . A vehicle seat as claimed in  claim 1  or  5  characterized in that said seat cushion and said backrest are formed by integrally foaming with inserting a frame thereinto.  
     
     
         10 . A vehicle seat as claimed in  claim 4  or  8  characterized in that a surface of the foam is treated.  
     
     
         11 . A vehicle seat as claimed in  claim 10  characterized in that said surface treatment is a grain-pattern treatment.  
     
     
         12 . A vehicle seat as claimed in  claim 5  characterized in that a reclining device for reclining the backrest is covered with said foam as an exterior material.  
     
     
         13 . A vehicle seat as claimed in  claim 5  characterized in that a boundary of the side faces of said seat cushion and said backrest is a flat surface as an identical face.  
     
     
         14 . A method of manufacturing a vehicle seat characterized in that foam resin is integrally molded on a frame to form an exterior material of a seat cushion including a sitting area, and then, another pad is disposed to said sitting area.  
     
     
         15 . A method of manufacturing a vehicle seat as claimed in  claim 14  characterized in that another pad is disposed to said sitting area and said back area.  
     
     
         16 . A method of manufacturing a vehicle seat as claimed in  claim 14  characterized in that concave portions are formed in the sitting area and back area, and pads which fit the concave portion are disposed thereto.  
     
     
         17 . A method of manufacturing a vehicle seat as claimed in  claim 14  characterized in that the integral mold of foam resin on said frame is performed by filling the foam resin into the mold, in which the frame is inserted beforehand, and a cavity side of the mold is a side to create grain pattern on exposed part of the seat cushion and the backrest.