摘要:
To be provided are a heat treatment apparatus having blocking members which block gaps between the side walls of nozzle boxes provided with slit nozzles, whose size in the lengthwise direction is greater than the width of a sheet, and the side walls of a heat treatment chamber, and gas having a uniform velocity fluctuating no more than ±25% in the lengthwise direction of the slit nozzles is blown out of the slit nozzles to subject the sheet to heat treatment, resulting in little unevenness of temperature in the widthwise direction and reduced energy loss, and a heat treatment method using this heat treatment apparatus.
摘要:
To be provided are a heat treatment apparatus having blocking members which block gaps between the side walls of nozzle boxes provided with slit nozzles, whose size in the lengthwise direction is greater than the width of a sheet, and the side walls of a heat treatment chamber, and gas having a uniform velocity fluctuating no more than ±25% in the lengthwise direction of the slit nozzles is blown out of the slit nozzles to subject the sheet to heat treatment, resulting in little unevenness of temperature in the widthwise direction and reduced energy loss, and a heat treatment method using this heat treatment apparatus.
摘要:
Disclosed are a belt type continuous plate manufacturing apparatus including two endless belts 11, 11′ with their facing belt surfaces running toward the same direction at the same speed, and a gasket 7 sandwiched by belt surfaces at their both side edge portions, in which a polymerizable raw material is fed into a space surrounded by the facing belt surfaces and the gasket from its one end, and solidified together with running of the belts in a heating zone, and a plate polymer is taken out from the other end, wherein a plurality of upper and lower roll pairs 4, 4′ each composed of an upper roll 4 and a lower roll 4′ and having axes orthogonally grossing the belt running direction are placed along the belt running direction as a mechanism of holding the belt surfaces of the endless belts 1, 1′ in the heating zone, and the outer diameter D of the roll body portion of the upper and lower roll pair is in the range of 100 mm to 500 mm; and a method of producing a plate polymer using this apparatus.
摘要:
A furnace to flame-resistantly treat a precursor fiber strand by sending hot air to a heat treatment chamber through a hot air blowing nozzle in a direction parallel to a running direction of the strand is provided. The hot air passes through a porous plate and a rectifying member satisfying the following conditions: (1) A/B≧4.0; (2) 0.15≦α≦0.35; (3) 0≦B−d≦20; and (4) 80% or more of the area of one opening of the porous plate when facing surfaces of the porous plate and the rectifying member overlap is included in one opening of the rectifying member, where A is the rectifying member hot air passage distance (mm), B is a horizontal maximum distance (mm) of one opening of the rectifying member, α is a rate of hole area of the porous plate, and d is the porous plate equivalent diameter (mm).
摘要:
A furnace to flame-resistantly treat a precursor fiber strand by sending hot air to a heat treatment chamber through a hot air blowing nozzle in a direction parallel to a running direction of the strand is provided. The hot air passes through a porous plate and a rectifying member satisfying the following conditions: (1) AB≧4.0; (2) 0.15≦α≦0.35; (3) 0≦B−d≦20; and (4) 80% or more of the area of one opening of the porous plate when facing surfaces of the porous plate and the rectifying member overlap is included in one opening of the rectifying member, where A is the rectifying member hot air passage distance (mm), B is a horizontal maximum distance (mm) of one opening of the rectifying member, α is a rate of hole area of the porous plate, and d is the porous plate equivalent diameter (mm).