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OwnerNaohiko Shindo, Hajime Shibaike +2inventors
InventorsNaohiko Shindo, Hajime Shibaike, Takuro Yoneda, Yasushi Kitagishi
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It is an object to provide a process and an apparatus which allow stable production of ultrashort-cut fibers having fiber lengths of no greater than 0.1 mm while minimizing miscutting, the object being achieved by a process and apparatus whereby numerous individual filament groups are bound to form a fiber bundle, an embedding material which is solidified by cooling and gasified or liquefied by heating is gasified or liquefied, the fiber bundle is embedded with the gasified or liquefied embedding material, and the edge of the embedded fiber bundle is thinly shaved at a temperature at which the embedding material does not gasify or liquefy, to obtain ultrashort-cut fibers having cut fiber lengths of no greater than 1.0 mm.
A process for production of ultrashort-cut fibers, characterized in that a fiber bundle is formed by binding numerous individual filament groups mutually parallel in the direction of the fiber lengths, said fiber bundle is embedded with an embedding agent which is gasified or liquefied by heating, said embedding agent is solidified to create a shaving material having the fiber bundle embedded in the embedding material, and the shaving edge of the embedded fiber bundle is thinly shaved at a temperature at which said embedding material does not gasify or liquefy, to obtain ultrashort-cut fibers having cut fiber lengths of no greater than 1.0 mm.
An apparatus for production of ultrashort-cut fibers, which is provided at least with a shaving blade which shaves a shaving material, comprising a fiber bundle formed of individual filament groups paralleled in one direction and embedded in an embedding material, a blade stand anchoring said shaving blade, holding means which holds said shaving material in such a manner that the direction of alignment of the fibers is orthogonal to the shaving direction of said shaving blade, and driving means which moves said holding means and/or said shaving stand relative to the direction of shaving of said shaving material, wherein said shaving material is thinly shaved by said shaving blade to produce fibers having shaved fiber lengths of 0.005-1.0 mm.
Dependencies are inferred from the claim text.