| 摘要 |
PROBLEM TO BE SOLVED: To produce a material for a box of an electric or electronic equipment or the like by opening a fiber bundle in the radial direction with a weak tensile strength into a thin homogenous state by hitting gas, which has been suctioned from a gas flow suctioning part, on the fiber bundle in the direction crossing the running direction and suctioning the opposite side of the gas flow suctioning part. SOLUTION: Laminar gas which has been suctioned from a gas flow suctioning part is hit on a continuously fed fiber bundle 30 of carbon fiber, aramid fiber or the like in the direction crossing the running direction V of the fiber bundle, and the opposite side of the gas flow suctioning part is suctioned. Thus, the fiber bundle 30 is opened in the lateral direction. Further, it is preferred that the fiber bundle 30 is heated or preliminarily opened before it is introduced into the cylindrical part of an air duct 2. |
