only one of the thermoplastic materials is exceeded the fiber 4 enters a nozzle 7 which is preferably a laval nozzle the fluid stream 5 accelerates the fiber 4 and stretches it at the same time simultaneously due to the acceleration in the nozzle 7 the pressure is reduced as the fiber 4 exits and or while it is inside the nozzle 7 the fiber 4 bursts multiple filaments 8 being formed from the single fiber 4 the filaments 8 are deposited on a movable conveyor belt 9 and form a still unbonded spunbonded nonwoven 10 a suction device 11 is preferably positioned below the conveyor belt 9 the suction device 11 continues the fluid stream 5 so that the filaments 8 may be deposited on the conveyor belt 9 with as little interference as possible the conveyor belt is preferably positioned at a distance of less than 50 cm to the spinning nozzle 2 this distance may particularly be varied in order to be able to adjust different product properties in particular the distance of the nozzle 7 to the spinning nozzle 2 may also be varied a prebonded nonwoven a film a net or another material is supplied to the conveyor belt 9 via a first feed 12 for thermoplastic material this material may be used for example as a support structure a molten thermoplastic material for example is applied to the filaments 8 via a second feed 13 the thermoplastic material forming a film a device 14 for bonding the.