| 摘要 |
In a process for the production of mats made of organic or inorganic fibres, comprising dispersing fibers in a flowing gas so as to issue together from a channel, depositing the fibers on a perforated conveyor belt for the formation of the mat, and removing the gas by suction below the conveyor belt, the improvement which comprises (a) disposing the conveyor belt so as to form an angle of about 90 DEG to 150 DEG with the direction of gas flow at the outlet of the channel; (b) deflecting the gas flow on one side of the channel in the direction of the conveyor belt such that the gas flow is deflected in the direction of the conveyor belt by the Coanda-effect after issuing from the channel; (c) the deflected gas flow entraining ambient air or recirculated gas from the surroundings in the direction of the conveyor belt downstream of the deflection; (d) on the opposite side of the channel ambient air flowing into the region of the fiber deposit between the conveyor belt and the lower edge of the channel in the direction of movement of the conveyor belt, at an angle of about 45 DEG to 90 DEG to the direction of gas flow at the channel outlet; and (e) removing the total flow by suction on the conveyor belt such that the gas carrying the fibers takes an S-shaped path to the conveyor belt with a double deflection, whereby the direction of flow is at an angle of from 0 DEG to about 30 DEG with the conveyor belt at the turning point. |
