Patent ID: 8137088

Claim:
A device for depositing synthetic fibers to form a non-woven web comprising a take-off nozzle through which the fibers are downwardly conveyed by means of an air stream, a depositing belt moveable in a conveying direction and underlying the take-off nozzle so as to receive the downwardly conveyed fibers and form a non-woven web thereupon, a guide duct comprising a pair of parallel duct walls extending between the take-off nozzle and the depositing belt and extending transverse to the conveying direction of the depositing belt, with at least one of the duct walls comprising a displaceable retaining flap which includes a support and an elastic sealing lip which is held in frictional contact with the depositing belt, and an exhaust duct disposed adjacent the underside of the depositing belt so as to be aligned below the guide duct.