| 摘要 |
PURPOSE:To easily produce fine inorganic fiber extremely little in shot content by allowing melted or softened inorganic fiber composition to flow out on a heated rotor and flying out the melt of the inorganic fiber composition by means of centrifugal force. CONSTITUTION:Inorganic fiber composition 7 melted or softened in a heating oven 6 is allowed to flow out on a rotor 1 which is rotated at 0.5-400m/sec circumferential velocity and heated at softening temp. or more of the above- mentioned composition 7 through a narrow pore nozzle 5 provided to the lower part of the oven 6 and uniformly fluidized by centrifugal force till the peripheral edge end part of the rotor 1 while keeping the composition 7 in such a state that it is made to a thin film at the uniform temp. melting or softening it, and the composition is sprung out with an end part 8 as a fulcrum and fiberized. By this method, fine fiber having <=7mu fiber diameter is stably obtained and fiber which contains a little shot and is made little in the length of fiber and the unevenness of diameter thereof is obtained. |
