MAKING CARBON FIBER INTO ULTRASHORT FIBER

PURPOSE:To obtain ultrashort carbon fibers having small carbon fiber length, by solidifying carbon fibers by the use of freezing of a binder, further cutting the fibers into a block state, compressing through a mold and grinding. CONSTITUTION:A carbon yarn bundled material such as tow or strand arra...

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Bibliographische Detailangaben
Hauptverfasser:	SAGA MITSUO, KANESHIRO TSUNEO
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING SPINNING TEXTILES
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain ultrashort carbon fibers having small carbon fiber length, by solidifying carbon fibers by the use of freezing of a binder, further cutting the fibers into a block state, compressing through a mold and grinding. CONSTITUTION:A carbon yarn bundled material such as tow or strand arranged in one direction is laminated while sprinkling preferably water as a binder, the binder is frozen with liquid nitrogen and the bundled material is temporarily solidified. Then the bundled material is cut into a proper length by a guillotine cutter, made into a block state and packed into a mold for pressing machine. Further the blocked bundled material packed in the mold is compressed at given load and ground. Then the binder of ground fibers is removed by a dryer, etc., so that carbon yarn is made into ultrashort carbon fibers having