METHOD FOR PRODUCTION OF PITCH-BASED EXTRA FINE CARBON FIBER FELT

• Main Authors: MITSUTA SUSUMU, MACHINO FUMIKAZU
• Format: Patent
• Language: English
• Published: 03.10.2002
• Edition: 7
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; BRAIDING; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; KNITTING; LACE-MAKING; LAUNDERING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; NATURAL OR ARTIFICIAL THREADS OR FIBRES; NON-WOVEN FABRICS; SPINNING; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; TRIMMINGS; WADDING

PROBLEM TO BE SOLVED: To provide a method for pitch-based extra fine carbon fiber felt, with which a carbon fiber felt is simply and continuously produced even in an extra fine carbon fiber. SOLUTION: A mat-form extra fine carbon fiber obtained continuously through a spinning process, an infusibilizing process and a carbonizing process is successively sent to a felting process while being opened without staying or storing the opened extra fine carbon fiber to produce the pitch-based extra fine carbon fiber felt. In the method, the mat-form extra fine carbon fiber may be opened by an opening machine 7 equipped with a rotary drum. In the felting process, the carbon fiber may be piled in a cottony state while supplying the opened extra fine carbon fiber to a fiber collection part 8 and spraying a solution of a binder resin on the fiber collection part 8. The solution of the binder resin may be sprayed in 1-30 μm average droplet diameter on the extra fine carbon fiber having 0.3-10 μm average fiber diameter.