公开(公告)号：JPH05132824A

公开(公告)日：1993-05-28

申请号：JP29896491

申请日：1991-11-14

Applicant: TORAY INDUSTRIES

Inventor： ENDO MAKOTO ,  NARITA ISAO ,  TSUNODA ATSUSHI

IPC: D01F9/22 ,  D01F9/32

Abstract: PURPOSE:To obtain the subject uniform yarn through mass baking by making precursor fibers travel through a relevant oven by a specific conveying means. CONSTITUTION:A set of conveyors 2 (2-1 to 2-3) to allow precursor fibers 4 travel in a hot air-circulating oven 3 for making the fibers resistant to flame is made up from conveyor belts bridged over rollers 7-1, 7-2. The inside of the conveyor belts is connected to a suction means for gas and the belts are made passable to air, and a high-temperature oxidative gas is ensured to pass from the outside to inside of the belts by the suction means.

公开(公告)号：JPH04300328A

公开(公告)日：1992-10-23

申请号：JP6475891

申请日：1991-03-28

Applicant: TORAY INDUSTRIES

Inventor： ENDO MAKOTO ,  TSUNODA ATSUSHI

IPC: D01F9/22 ,  D01F9/32 ,  D02J13/00

Abstract: PURPOSE:To carry out flameproofing treatment of thick yarn, etc., in a short time by sucking a highly oxidative gas from the surface of flameproofing rollers while keeping the ratio of the pressure loss coefficient of the flameproofing rollers to that of precursor fiber yarn constant. CONSTITUTION:Precursor fiber yarn is brought into contact with plural flameproofing rollers and flameproofed. In the process, a high-temperature oxidizing gas is sucked from the surfaces of the flameproofing rollers to the inside of the rollers while keeping the ratio of the pressure loss coefficient of the flameproofing rollers to that of the precursor fiber yarn at 0.3-3.0 and the precursor fiber yarn (part thereof) is brought into contact with the surfaces of the flameproofing rollers and flameproofed. The resultant flameproofed yarn is then carbonized to afford the objective carbon fiber.