To provide a composite which solve problems that since a nonwoven fabric sheet consisting of a fibrous material of heating melting properties and a plastic film are piled up and made to pass between a pair of heating rolls, and the fusion of the nonwoven fabric sheet and the plastic film is carried out, a part of the nonwoven fabric sheet and the plastic film which has been melted adheres to the surface of the heating rolls, causes fuming and malodor, moreover, in the case of ultrasonic sealing, an area which can be welded with one vibrator is restricted, if an ultrasonic device is enlarged, working hours may be long and productive efficiency may be lowered.

The composite comprises so that an adherend 2 is superposed on immediately after a large number of molten resin filaments 7 which have been extruded from two or more nozzles of an extruder are put down on a three dimensional net like structure 1 which is transferred, and pressed, and the three dimensional net like structure and the adherend are welded and unified by the molten resin filaments.